Patent Grant
7891017
This nonprovisional application is based on Japanese Patent Applications Nos. 2005-025156 and 2006-008992 filed with the Japan Patent Office on Feb. 1, 2005 and Jan. 17, 2006, respectively, the entire contents of which are hereby incorporated by reference.
1. Field of the Invention
The present invention relates to a baseball or softball catching tool (hereinafter simply referred to as a “ball catching tool”) and, more specifically, to a catching tool having a protruded portion on a surface thereof, to prevent unexpected slipping of the ball.
2. Description of the Background Art
Baseball or softball gloves as examples of conventional ball catching tool are described in Japanese Utility Model Laying-Open Nos. 57-29274, 57-29275, 56-90274 and 56-171079.
Japanese Utility Model Laying-Open No. 57-29274 describes a glove with a plurality of slip preventing means in the form of protrusions surrounding the central portion of a ball catching surface of the glove. The surface skin of the glove is mold-pressed to form bumps, and inclusions are inserted in the bumps, whereby the slip preventing means is formed. As the slip preventing means is formed by mold pressing of the surface skin, the height of the slip preventing means is limited. Further, as the surface of the slip preventing means is the surface skin, degree of freedom in selecting the height of the slip preventing means is small.
Japanese Utility Model Laying-Open No. 57-29275 describes a glove with slip preventing means in the form of a plurality of projections surrounding the central portion of the ball catching surface of the glove. The projections are provided by cutting the surface skin in meandering manner and pulling the cut end portions outward. Therefore, the height of the projection is defined by the thickness of the surface skin.
Japanese Utility Model Laying-Open No. 56-90274 describes a glove having multiple pores opened in the surface skin at the ball catching portion, a thin padding inserted between the surface and back skins, with the padding having small projections formed on the front side at portions corresponding to the pores formed in the surface skin, so that each small projection is fit in each pore and slightly protrudes from the surface. Japanese Utility Model Laying-Open No. 56-171079 describes a glove having an embossed pattern of small dots formed by hot-mold pressing at the surface skin of leather at a palm portion and finger portions of the ball catching tool. The embossed pattern of small dots is formed by mold pressing, and therefore, its height is limited.
Among ball catching failures, a so-called fumble occurs due to insufficient closing of the ball catching tool by the player, after the ball touches the ball catching tool and before the ball bounces off from the ball catching tool. Therefore, the protruded portions formed on the surface skin that are not very high, such as those of the conventional ball catching tools described above, have only an insufficient function of supplementing the distance necessary for closing the ball catching tool for the player to catch the ball, and the function of assisting ball catching have not been successfully exploited.
The present invention was made to solve the above-described problem, and its object is to provide a ball catching tool that can reduce ball catching failures generally referred to as fumbles, by providing protruded portions of a prescribed height on a surface of the surface skin.
According to an aspect, the present invention provides a ball catching tool, including a surface skin formed by sewing together a ball catching surface skin and a dorsal skin; a pocket portion at a central portion of the ball receiving surface skin; a thumb-stall receiving the thumb of a user; a finger-stall receiving fingers of the user other than the thumb; an edge portion positioned on a side of an opening for the user to insert his/her hand; and a ball catching assisting portion arranged on at least one of the thumb-stall or its root portion and the finger-stall or its root portion; wherein the ball catching assisting portion includes a first ridge portion extending along a width direction of the thumb-stall or the finger-stall on which the ball catching assisting portion is provided, and a second ridge portion extending in a direction crossing the direction of extension of the first ridge portion.
Preferably, the second ridge portion extends from a side of the pocket portion to a tip end side of the thumb-stall or the finger-stall on which the ball catching assisting portion is provided, and the ball catching assisting portion has an inclined surface on a side of the edge portion inclined such that height at the side of the edge portion is lower than at a side of the pocket portion.
Preferably, the ball catching assisting portion includes an upper surface and a peripheral surface connected to the upper surface; and the upper surface and the peripheral surface are arranged protruded from the ball catching surface skin, and a lower surface connected to the peripheral surface is fixed on the ball catching surface skin.
Preferably, the ball catching tool further includes a bulged portion formed on the surface skin, wherein the bulged portion is formed on at least one root portion of the thumb-stall and the finger-stall except for the thumb-stall and the finger-stall on which the ball catching assisting portion is arranged, of the thumb-stall and the finger-stall.
Preferably, the ball catching assisting portion is arranged on the thumb-stall or on its root portion; and the bulged portion is formed at least on one of a middle-finger-stall receiving the middle finger of the user or its root portion, a ring-finger-stall receiving the ring finger of the user or its root portion, and a little-finger-stall receiving the little finger of the user or its root portion.
According to another aspect, the present invention provides a ball catching tool including: a thumb-stall receiving the thumb of a user; an index-finger-stall receiving the index finger of the user; a middle-finger-stall receiving the middle finger of the user; a ring-finger-stall receiving the ring finger of the user; and a little-finger-stall receiving the little finger of the user; wherein a ball catching assisting portion of at least 6.15 mm and at most 26.6 mm in height is formed on a ball catching side surface of the thumb-stall or at its root portion.
According to a further aspect, the present invention provides a ball catching tool including: a thumb-stall receiving the thumb of a user; an index-finger-stall receiving the index finger of the user; a middle-finger-stall receiving the middle finger of the user; a ring-finger-stall receiving the ring finger of the user; and a little-finger-stall receiving the little finger of the user; wherein a ball catching assisting portion of at least 6.15 mm and at most 26.6 mm in height is formed on a ball catching side surface of at least one of the middle-finger-stall or at its root portion, the ring-finger-stall or at its root portion, and the little-finger-stall or its root portion.
According to a still further aspect, the present invention provides a ball catching tool including: a thumb-stall receiving the thumb of a user; an index-finger-stall receiving the index finger of the user; a middle-finger-stall receiving the middle finger of the user; a ring-finger-stall receiving the ring finger of the user; and a little-finger-stall receiving the little finger of the user; wherein a first ball catching assisting portion is provided on a ball catching side surface of the thumb-stall or its root portion, a second ball catching assisting portion is provided on a ball catching side surface of at least one of the middle-finger-stall or at its root portion, the ring-finger-stall or at its root portion, and the little-finger-stall or its root portion; and sum of heights of the first ball catching assisting portion and the second ball catching assisting portion is at least 6.15 mm and at most 26.6 mm.
Preferably, the ball catching tool further includes a pocket portion at a central portion of a ball catching surface skin, and an edge portion positioned on a side of an opening for the user to insert his/her hand; wherein a ball catching assisting portion has an inclined surface formed with its height increasing from the side of the edge portion to the side of the pocket portion.
Preferably, a ball catching assisting portion includes a first ridge portion extending along the pocket portion at the central portion of the ball catching surface skin, and a second ridge portion extending in a direction crossing the direction of extension of the first ridge portion.
Preferably, the second ridge portion extends from a side of the pocket portion to a side of a tip end of the thumb-stall or the finger-stalls on which the ball catching assisting portion is provided.
Preferably, the ball catching assisting portion includes an upper surface and a peripheral surface connected to the upper surface; and the upper surface and the peripheral surface are arranged protruded from the ball catching surface skin, and a lower surface of the ball catching assisting portion is fixed on the ball catching surface skin.
Preferably, the ball catching assisting portion is formed of a material having friction coefficient higher than a material forming a ball receiving surface of the ball catching tool for baseball or softball.
Preferably, the ball catching assisting portion is divided into a plurality of divided ball catching assisting portions.
Preferably, a tip end assisting portion protruded from a surface of a ball receiving surface is provided at a tip end portion of at least one of the thumb-stall, the index-finger-stall, the middle-finger-stall, the ring-finger-stall and the little-finger-stall.
Preferably, the ball catching tool includes a surface skin formed by sewing together a ball catching surface skin and a dorsal skin, and a pocket portion at a central portion of the ball receiving surface skin, wherein a flat surface is formed on an upper surface of the ball catching assisting portion on the side of the pocket portion.
Preferably, the present invention provides a ball catching tool for baseball or softball, including: a surface skin formed by sewing together a ball catching surface skin and a dorsal skin; a pocket portion at a central portion of the ball receiving surface skin; a thumb-stall receiving the thumb of a user; a finger-stall receiving fingers of the user other than the thumb; and a ball catching assisting portion arranged on at least one of the thumb-stall or its root portion and the finger-stall or its root portion; wherein a part of a peripheral portion of the ball catching tool for baseball or softball is formed of an outer edge portion of the thumb-stall and an outer edge of the finger-stall; and the ball catching assisting portion includes an inclined surface formed with its height increasing from the outer edge portion of at least one of the thumb-stall and the finger-stall, on which the ball catching assisting portion is provided, to a side of the pocket portion, and a ridge portion along the pocket portion.
According to a still further aspect, the present invention provides a ball catching tool, including: a thumb-stall receiving the thumb of a user; a finger-stall receiving the index finger, middle finger, ring finger and little finger of the user; a ball catching assisting portion for the thumb arranged on a ball receiving side surface of the thumb-stall or its root portion; and a ball catching assisting portion for the finger-stall arranged on a ball receiving side surface of the finger-stall or its root portion; wherein sum of heights of the ball catching assisting portion for the thumb and the ball catching assisting portion for the finger-stall is at least 6.15 mm and at most 26.6 mm.
According to a yet another aspect, the present invention provides a ball catching tool, including: a thumb-stall receiving the thumb of a user; a finger-stall receiving the index finger, middle finger, ring finger and little finger of the user; and a ball catching assisting portion arranged on a ball catching side surface of the thumb-stall or its root portion; wherein height of the ball catching assisting portion is at least 6.15 mm and at most 26.6 mm.
According to a still further aspect, the present invention provides a ball catching tool, including: a thumb-stall receiving the thumb of a user; a finger-stall receiving the index finger, middle finger, ring finger and little finger of the user; and a ball catching assisting portion arranged on a ball catching side surface of the finger-stall or its root portion; wherein height of the ball catching assisting portion is at least 6.15 mm and at most 26.6 mm.
According to a still further aspect, the present invention provides a ball catching tool, including: a surface skin formed by sewing together a ball catching surface skin and a dorsal skin; a pocket portion at a central portion of the ball receiving surface skin; a thumb-stall receiving the thumb of a user; a finger-stall receiving fingers of the user other than the thumb; an edge portion positioned on a side of an opening for the user to insert his/her hand; a first ball catching assisting portion provided on the thumb-stall or its root portion; and a second ball catching assisting portion provided on at least one of the middle-finger-stall or at its root portion and the ring-finger-stall or at its root portion; wherein the first ball catching assisting portion is larger in width in widthwise direction of the thumb-stall than in longitudinal direction of the thumb-stall, and the second ball catching assisting portion is larger in width in longitudinal direction of the middle-finger-stall or the ring-finger-stall than in widthwise direction of the middle-finger-stall or the ring-finger-stall on which the second ball catching assisting portion is provided.
According to a still further aspect, the present invention provides a ball catching tool, including: a surface skin formed by sewing together a ball catching surface skin and a dorsal skin; a pocket portion at a central portion of the ball receiving surface skin; a thumb-stall receiving the thumb of a user; a middle-finger-stall receiving the middle finger of the user; a ring-finger-stall receiving the ring finger of the user; and a little-finger-stall receiving the little finger of the user; and a ball catching assisting portion arranged on at least one of the thumb-stall or its root portion, the middle-finger-stall or its root portion, the ring-finger-stall or its root portion, and the little-finger-stall or its root portion; wherein at least one the ball catching assisting portion is larger in width in widthwise direction than in longitudinal direction of the thumb-stall, the middle-finger-stall, the ring-finger-stall or the little-finger-stall on which the ball catching assisting portion is provided.
According to a still further aspect, the present invention provides a ball catching tool, including: a surface skin formed by sewing together a ball catching surface skin and a dorsal skin; a pocket portion at a central portion of the ball receiving surface skin; a thumb-stall receiving the thumb of a user; a middle-finger-stall receiving the middle finger of the user; a ring-finger-stall receiving the ring finger of the user; a little-finger-stall receiving the little finger of the user; and a ball catching assisting portion arranged on at least one of the thumb-stall or its root portion, the middle-finger-stall or its root portion, the ring-finger-stall or its root portion, and the little-finger-stall or its root portion; wherein the ball catching assisting portion has at least one of a ridge portion extending along longitudinal direction and a ridge portion extending along widthwise direction, of the thumb-stall, the middle-finger-stall, the ring-finger-stall or the little-finger-stall on which the ball catching assisting portion is provided.
As the protruded portions of a prescribed height are formed on a surface of the surface skin, ball catching failures generally referred to as fumbles can be reduced by the present invention.
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
Embodiment of the present invention will be described with reference to
Generally, a hardball refers to a ball including a small core of cork, rubber or similar material, strings wound therearound and two pieces of enclosing white horse leather or cowhide sewn firmly together. A hardball generally has the weight of 5 to 5 and ¼ ounces (141.7 g to 148.8 g), and the circumferential length of 9 to 9 and ¼ inches (22.9 cm to 23.5 cm). A rubber ball generally has an outer circumferential surface formed of rubber, and includes a hollow ball or a ball filled with cork or the like. Further, the rubber ball generally includes a general-use rubber ball (diameter (unit: millimeter): 71.5˜72.5, weight (unit: gram) 134.2˜137.8), restitution (unit: centimeter) 85.0˜105.0), a rubber ball for junior-high school students (diameter: 69.5˜70.5, weight: 133.2˜136.8, restitution: 80.0˜100.0), a rubber ball for school children (diameter 67.5˜68.5, weight 126.2˜129.8, restitution 65.0˜85.0), a rubber ball for school children in the lower grades (diameter: 64.0˜65.0, weight: 105.0˜10.0, restitution: 65.0˜85.0), and a semi-hardball with a filler filled therein (diameter: 71.5˜72.5, weight: 141.2˜144.8, restitution 50.0˜70.0). The coefficient of restitution is calculated from the distance of rebound when a ball free-fallen from the height of 15 cm to marble bounces back. A softball generally has the weight of 177.5 g˜198.8 g (6.5 ounces to 7 ounces) and the circumferential length of about 30.2 cm ˜30.8 cm (12 inches).
Web portion 3 is provided between thumb-stall 2 and index-finger-stall 4, and surface layer portions of thumb-stall 2, web portion 3, index-finger-stall 4, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7 are formed of surface skin 16. Further, ball catching tool 1 includes an opening portion 81 to which the user's hand is inserted. At an opening side of opening portion 81 of ball catching tool 1, an edge portion 80 is formed. Edge portion 80 is composed of a rim of opening portion 81, a side surface 2a of thumb-stall 2 and a side surface 7a of little-finger stall 7. A peripheral portion of thumb-stall 2 includes a tip end portion, a side surface 2a exposed outward, and a side surface adjacent to web portion 3. A peripheral portion of little-finger stall 7 includes the side surface 7a exposed outward, and a side surface adjacent to ring-finger-stall 6.
Surface skin 16 includes a dorsal skin 9 and a ball catching surface skin 10. Dorsal skin 9 is fabricated by sewing together a plurality of leather parts to form five stalls, and ball catching surface skin 10 has a rough shape of five fingers. Dorsal skin 9 and ball catching surface skin 10 are formed of a material such as natural leather, artificial leather or similar material. Peripheries of ball catching surface skin 10 and dorsal skin 9 are sewn together each with the grain side facing inward, except for the hand-inserting portion, and then, the sewn body is turned over so that the grain side comes out. This provides surface skin 16. Inside the surface skin 16, a lining is provided, which includes a backside skin and a palmar skin. The backside skin is formed by sewing together a plurality of leather parts to form five stalls, and the palmar skin is cut to have a rough shape of five fingers smaller than that of ball catching surface skin 10. Both the backside and palmar skins are formed of natural leather, artificial leather or a similar material.
Ball catching assisting portion 20 includes a ball catching assisting portion 21 for the thumb (first ball catching assisting portion) provided at a root portion of thumb-stall 2, a ball catching assisting portion 22 for the middle finger (second ball catching assisting portion) provided at a root portion of middle-finger-stall 5, a ball catching assisting portion 23 for the ring finger (second ball catching assisting portion) provided at a root portion of ring-finger-stall 6, and a ball catching assisting portion 24 (second ball catching assisting portion) provided at a root portion of little-finger-stall 7. Ball catching assisting portions 20 are all provided on a surface of the ball catching side that touches the ball, of ball catching surface skin 10.
The sum of the height of ball catching assisting portion 21 for the thumb and the height of ball catching assisting portion 22 for the middle finger is determined to be at least 6.15 mm and at most 26.6 mm; the sum of the height of ball catching assisting portion 21 for the thumb and the height of ball catching assisting portion 23 for the ring finger is also determined to be at least 6.15 mm and at most 26.6 mm; and the sum of the height of ball catching assisting portion 21 for the thumb and the height of ball catching assisting portion 24 for the little finger is also determined to be at least 6.15 mm and at most 26.6 mm. Further, ball catching assisting portion 21 for the thumb, ball catching assisting portion 22 for the middle finger, ball catching assisting portion 23 for the ring finger and ball catching assisting portion 24 for the little finger are each formed to be higher than 0 mm and lower that 26.6 mm.
Though ball catching assisting portion 21 for the thumb, ball catching assisting portion 22 for the middle finger, ball catching assisting portion 23 for the ring finger and ball catching assisting portion 24 are arranged on the surface on the ball catching side at the root portions of thumb-stall 2, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7, respectively, positions are not limited, and these may be provided at the surfaces on the belly portions of thumb-stall 2, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7. Preferably, ball catching assisting portion 22 for the middle finger, ball catching assisting portion 23 for the ring finger and ball catching assisting portion 24 for the little finger are arranged near the fingertips of the wearer, specifically, at positions up to about 20 mm from the top joint toward the tip of respective fingers. Further, preferably, ball catching assisting portion 21 for the thumb is arranged at a position near the fingertip of the wearer, specifically, at a position 5 mm to about 20 mm to the tip from the second joint.
Though ball catching assisting portion 20 includes ball catching assisting portion 21 for the thumb, ball catching assisting portion 22 for the middle finger, ball catching assisting portion 23 for the ring finger and ball catching assisting portion 24 for the little finger in the present embodiment, this is not limiting. Specifically, ball catching assisting portion 20 may include ball catching assisting portion 22 for the middle finger, ball catching assisting portion 23 for the ring finger and ball catching assisting portion 24 for the little finger, as shown in
Tables 1 to 8 below show signs used in the present specification and their definitions.
Further, as shown in
Referring to
As can be seen from
The maximum value Hmax of the sum of heights of ball catching assisting portions 22, 23 and 24 for the middle, ring and little fingers is set to be 26.6 mm when ball catching assisting portion 20 is adapted to include ball catching assisting portions 22, 23 and 24 for the middle, ring and little fingers, in order that ball catching assisting portion 20 does not hinder entrance of the ball. Similarly, the maximum value Hmax of the sum of heights of ball catching assisting portions 22 and 23 for the middle and ring fingers is set to be 26.6 mm when ball catching assisting portion 20 is adapted to include ball catching assisting portions 22 and 23 for the middle and ring fingers. Further, the maximum value Hmax of the sum of heights of ball catching assisting portion 21 and 22 for the thumb and the middle finger, and the maximum value Hmax of the sum of heights of ball catching assisting portion 21 and 23 for the thumb and the ring finger are each set to 26.6 mm, when ball catching assisting portion 20 is adapted to include ball catching assisting portions 21, 22 and 23 for the thumb and middle and ring fingers. Further, maximum height Hmax of ball catching assisting portion 21 for the thumb is set to 26.6 mm, when ball catching assisting portion 20 is adapted to include ball catching assisting portion 21 for the thumb only. Similarly, the maximum value Hmax of the heights of ball catching assisting portions 21 and 22 for the thumb and the middle finger is set to 26.6 mm, when ball catching assisting portion 20 is adapted to include ball catching assisting portions 21 and 22 for the thumb and the middle finger. With the height of ball catching assisting portion 20 set in such a manner, it is possible for the user to grip a hardball using the thumb and the ring finger. At this time, referring to
When the maximum value Hmax is set to 20.5 mm, the hardball may be gripped not only by the pattern using the thumb and the ring finger but also by the thumb and middle finger, when catching the ball, and therefore, the number of ball catching patterns can be increased. When the maximum value Hmax is set to 19.7 mm, a further pattern of gripping the hardball by the thumb and the little finger also becomes possible. Thus, it becomes possible to successfully grip the hardball, and the ball catching failure, that is, a so-called fumble, can be reduced.
For each of the sum of heights of ball catching assisting portions 21 and 22 for the thumb and the middle finger, the sum of heights of ball catching assisting portions 21 and 23 for the thumb and the ring finger and the sum of heights of ball catching assisting portions 21 and 24 for the thumb and the little finger, the minimum value Hmin is set to 6.15 mm. The minimum value Hmin is calculated, assuming that an experienced baseball player catches a hardball at a prescribed position where the caught hardball can be shifted to the other hand smooth, based on a difference in distance of finger movement Xs when the experienced baseball player catches the ball and the distance of finger movement D necessary for catching the ball in a time period t from when the hardball touches the ball catching tool until the ball reaches the prescribed position.
The prescribed position mentioned above is within reach of the finger of the user wearing ball catching tool 1, and assumed to be apart by a prescribed distance dmin, for example, 30 mm, from the surface of surface skin 16 at which a pocket portion 90 is positioned.
The time period t is calculated from the velocity Vb of hardball bouncing back from ball catching tool 1 and the prescribed distance dmin mentioned above. As the method of calculating the velocity Vb, the velocity Vb may be calculated based on the fact that even a beginner of baseball can catch the ball. In this case, the velocity Vb is calculated based on the time of ball catching T2e for the beginner to close ball catching tool 1, and the distance d of movement of the hardball within the time of ball catching T2e. Further, it is likely that a beginner may catch the hardball that bounces within ball catching tool 1 with tip portions of respective finger-stalls. Therefore, as the time of ball catching T2e, the longest time of ball catching (the longest among the times of ball catching by a beginner of baseball) is used. Among the time periods of ball catching by a beginner, the longest time of ball catching may come from catching with the tip portions of ball catching tool 1. Therefore, as the time Temax of closing ball catching tool 1 when a beginner catches ball with the tip portion of ball catching tool 1, the longest time of ball catching for a hardball of 40 km/h is used. Further, as the distance d of movement of the hardball, the maximum distance of movement dmax of the hardball from pocket portion 90 of ball catching tool 1 to immediately before slipping out from ball catching tool 1 is used. As the distance D of finger movement mentioned above, the distance Dm between the thumb and the middle finger is used. The reason for this is that at the time of catching a hardball, the hardball is substantially pinched between the thumb and the middle finger or between the thumb and the ring finger, while the distance Dm of finger movement between the thumb and the middle finger is smaller than the distance Dr between the thumb and the ring finger.
The distance Xs of finger movement when an experienced baseball player catches a ball is calculated from the time t mentioned above and the velocity Vfs of finger movement of the experienced player. In the present specification, the velocity Vfs is calculated from the minimum time of ball catching Tsmin of the experienced baseball player and the distance Dm of finger movement between the thumb and the middle finger.
Table 10 below shows time of ball catching T2, when serious level players, that is, experienced baseball players and entry level players, that is, beginners, caught hardball of 40 km/h (in the unit of seconds).
Tmin represents the shortest time of ball catching among (actual values of) the time of ball catching T2 when serious level players (15 players) and entry level players (10 players) caught hardball of 40 km/h. Tmax represents the longest time of ball catching among (actual values of) the time of ball catching T2 when catching the hardball of 40 km/h, and Tave represents the average time of ball catching T2 when catching the hardball of 40 km/h. Of the longest time of ball catching Tmax, the time of entry level players is represented as Temax, and the time of serious level players is represented as Tsmax.
Of the shortest time of ball catching Tmin, the time of entry level players is represented as Temin, and the time of serious level players is represented as Tsmin. Of the average time of ball catching Tave, the time of entry level players is represented as Teave, and the time of serious level players is represented as Tsave.
As shown in Table 10, the longest time of ball catching Temax of beginners, that is, entry level players is 0.14 seconds. The maximum distance of movement dmax represents the distance until the hardball slips out from ball catching tool 1, which is an actually measured value of 120 mm. Therefore, as the maximum distance of movement dmax, 120 mm is used. Accordingly, the velocity Vb mentioned above can be calculated from dmax/Temax. The time for a bounced hardball to reach the prescribed position described above can be calculated as dmin/Vb, assuming that dmin=30 (mm).
The time Tsmin is, as shown in Table 10, 0.05 seconds and the distance of finger movement Dm is 20.5 mm. Therefore, the velocity Vfs for an experienced baseball player to close ball catching tool 1 can be calculated from Dm/Tsmin. Therefore, the distance Xs for the experienced player to close ball catching tool 1 within the time period t mentioned above can be calculated by t×Dm/Tsmin. The minimum value Hmin of the sum of height of ball catching assisting portion 21 for the thumb and the height of any of ball catching assisting portions 22, 23 and 24 for the middle, ring and little fingers is calculated as Dm−Xs. Here, there is the following relation: Hmin=Dm−Xs=Dm−t×Dm/Tsmin=Dm−(dmin/Vb)×Dm/Tsmin=Dm−(dmin/(dmax/Temax))×Dm/Tsmin=Dm−Dm/Tsmin×dmin/dmax×Temax=20.5−20.5/0.05×30/120×0.14=6.15 (mm). Therefore, by making the sum of height of ball catching assisting portion 21 for the thumb and the height of any of ball catching assisting portions 22, 23 and 24 for the middle, ring and little fingers to be 6.15 mm, it becomes possible for an experienced player to pinch the hardball using the thumb and the middle finger at a position that allows easy shifting of the hardball. When the hardball is pinched by ball catching assisting portions 21 and 22 for the thumb and the middle finger, the hardball is pinched between upper surface 32 of ball catching assisting portion 21 for the thumb and upper surface 42 of ball catching assisting portion 22 for the middle finger.
For calculating the minimum value Hmin mentioned above, in the process of calculating the velocity of an experienced player for closing the fingers, the shortest time. Tsmin of the ball catching time of experienced players and the distance of finger movement Dm between the thumb and the middle finger are used. The combination, however, is not limited thereto. Specifically, any of the values Dm, Dr, Dl may be used as the distance of finger movement, and any of the values Tsmin, Tsave and Tsmax may be used as the time of ball catching by experienced baseball players. Therefore, there are nine possible minimum values Hmin.
By way of example, in calculating the minimum value Hmin described above, the distance Dm of the thumb and the middle finger is used as the distance D of finger movement necessary for catching the ball. This is, however, not limiting and the value may be calculated based on the distance Dr of movement of the thumb and the ring finger. In that case, the value will be Hmin=Dr−Xs=Dr−Dr/Tsmin×dmin/dmax×Temax=26.6−26.6/0.05×30/120×0.14=7.98 (mm). Therefore, by setting the value Hmin to 7.98 (mm), it becomes possible for an experienced player to catch the hardball using ball catching assisting portions 21 and 22 for the thumb and the middle finger or using ball catching assisting portions 21 and 23 for the thumb and the ring finger, at a position that allows easy shifting of the hardball.
Further, the minimum value Hmin mentioned above is calculated based on the shortest time of ball catching Tsmin among the time of ball catching T, by experienced baseball players. The value, however, may be calculated based on the longest time Tsmax. In this case, the value will be Hmin=Dm−Xs=Dm−Dm/Tsmax×dmin/dmax×Temax=20.5−20.5/0.09×30/120×0.14=12.5 (mm). Here, by setting the value Hmin to 12.5 (mm), it becomes possible even for an experienced player slow in ball catching operation to catch the hardball at a position that allows easy shifting of the hardball.
The minimum value Hmin described above is calculated based on the shortest Tsmin of the time T of ball catching by experienced baseball players. It may, however, be calculated based on the average Tsave among the ball catching time T of experienced baseball players. In that case, Hmin will be 10.3 (mm). Here, it becomes possible for an experienced baseball player with average ball catching time to catch the hardball at a position that allows easy shifting of the hardball.
Alternatively, the value Hmin described above may be calculated using the distance of movement Dr of the thumb and the ring finger as the necessary distance D of finger movement for ball catching and using Tsave in place of Tsmin. In that case, the value will be Hmin=Dr−Xs=Dr−Dr/Tsave×dmin/dmax×Temax=26.6−26.6/0.07×30/120×0.14=13.3 (mm). Here, it becomes possible for an experienced baseball player with average ball catching time to catch the hardball by ball catching assisting portions 21 and 22 for the thumb and the middle finger, or by ball catching assisting portions 21 and 23 for the thumb and the ring finger, at a position that allows easy shifting of the hardball.
The minimum value Hmin described above is calculated based on the shortest Tsmin of the time T of ball catching by experienced baseball players. It may, however, be calculated based on the average Teave among the ball catching time T by beginners of baseball. In that case, the value will be Hmin=Dm−Xs=Dm−Dm/Teave×dmin/dmax×Temax=20.5−20.5/0.08×30/120×0.14=11.5 (mm). Here, it becomes possible even for a beginner to catch the hardball at a position that allows easy shifting of the hardball, if he/she is quick in ball catching.
Specifically, by setting the maximum value Hmax and minimum value Hmin in the above-described manner, it becomes possible to grip the hardball at a position that allows easy shifting of the hardball, between the upper surfaces of ball catching assisting portion 20 or between the upper surface of ball catching assisting portion 20 and the surface of ball catching surface skin 10, with the ball catching assisting portion 20 not hindering the ball catching operation.
On the other hand, for a beginner of baseball to catch a ball in the same manner as an experienced player, the height of ball catching assisting portion 20 is set to a distance calculated from the difference between the distance α for the beginner to close the ball catching tool 1 within the ball catching time T2s of an experienced player and the distance D of finger movement necessary for catching the ball. The distance α is calculated from the velocity Vfe for the beginner to close ball catching tool 1 and the ball catching time T2s of an experienced player, and the velocity Vfe can be calculated from the distance D of finger movement necessary for catching the ball and the ball catching time T2e of the beginner of baseball.
Table 11 below shows time T1 of entire ball catching operation for entry level players, that is, beginners of baseball from when the force begins to act on each finger until the ball is fully caught, and time T2 of ball catching from when a hardball hits ball catching tool 1 until ball catching is complete. Values T1 and T2 are average values of measurements of serious level players (15 players) and entry level players (10 players), represented in the unit of the seconds.
Here, T1s represents the time for the entire ball catching operation of serious level players, that is, experienced baseball players, from when the force begins to act on the fingers until the ball is fully caught. The value T1e represents the time for the entire ball catching operation of entry level players, that is, beginners of baseball, from when the force begins to act on the fingers until the ball is fully caught. The value T2s represents time from when the hardball hits ball catching tool 1 until the experienced players finish ball catching, and T2e represents time from when the hardball hits ball catching tool 1 until the beginners finish ball catching.
As shown in Table 11, the time T2s of ball catching by experienced baseball players is 0.07 seconds, while the time T2e of ball catching by beginners of baseball is 0.11 seconds. It is noted that the time T2s of ball catching is the average of ball catching time by experienced baseball players, and hence it is the same as the average ball catching time Tsave of Table 10 above, and the time T2e of ball catching is the same as the average ball catching time Teave of Table 10 above.
The distance D of finger movement corresponds to Dm for the thumb and the middle finger, Dr for the thumb and the ring finger, and Dl for the thumb and the little finger. Therefore, the distance α mentioned above can be calculated by α=(D (any of Dm, Dr and Dl)/T2e (closing time of entry level players))×T2s (closing time of serious level players). Therefore, the sum Hm of the heights of ball catching assisting portions 21 and 22 for the thumb and the middle finger becomes Hm=Dm−Dm/0.11×0.07=7.45 (mm). The sum Hr of the heights of ball catching assisting portions 21 and 23 for the thumb and the ring finger becomes Hr=Dr−Dr/0.11×0.07=9.67 (mm). Further, the sum Hl of the heights of ball catching assisting portions 21 and 24 for the thumb and the little finger becomes Hl=Dl−Dl/0.11×0.07=7.16 (mm). Exemplary values of Hr, Hm and Hl satisfying the above-described relation are as follows: the height of ball catching assisting portion 21 for the thumb is 4 mm, the height of ball catching assisting portion 22 for the middle finger is 3.45 mm, the height of ball catching assisting portion 23 for the ring finger is 5.67 mm, and the height of ball catching assisting portion 24 for the little finger is 3.16 mm.
Among the values Hm, Hr and Hl, Hr is the maximum, and therefore, it is preferred to set the sum of height of ball catching assisting portion 21 for the thumb and the height of any of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger to at least 9.67 (mm). In this case, it is possible for a beginner of baseball to catch a hardball in the similar manner as an experienced baseball player, no matter in any pattern he/she catches the ball, that is, using the thumb and the middle finger, the thumb and the ring finger or the thumb and the little finger.
A hardball and a rubber ball have different coefficients of restitution, and therefore, it is necessary to set the height H of ball catching assisting portion 20 taking into consideration the ratio E (=Er/Eh) between the coefficient of restitution Er of a rubber ball and the coefficient of restitution Eh of a hard ball, for catching a rubber ball. Specifically, the velocity Vh of a hardball that touches and bounces back from ball catching tool 1 and the velocity Vr of a rubber ball bouncing back satisfy the relation of Vr=Vh×E. Therefore, the time Tr of ball catching necessary for catching a rubber ball and the time Th of ball catching necessary for catching a hardball has the relation of Tr=Th/E.
Therefore, the distance Dtr of finger movement within ball catching time Tr is calculated as Dtr=D (distance of finger movement necessary for catching a ball)/E. Therefore, in order that an experienced baseball player catches a rubber ball with the same feeling as the experienced baseball player to catch a hardball, the height of ball catching assisting portion 20 must be set to a prescribed height Htr. The prescribed height Htr is defined as Htr=D (distance of finger movement necessary for catching a ball)−Dtr=D−D/E.
Table 12 below shows coefficients of restitution measured by hitting an iron plate, on which sorbothane having shock absorption ratio close to that of a human body and two sheets of leather are adhered, with hardballs and rubber balls with various velocities pitched by a pitching machine. As the hardballs, 2OH-110 (for collage baseball) manufactured by Mizuno Corporation, and as the rubber balls, KENKO-ball A manufactured by Nagase Kenko corporation were used for the measurement.
As the actual velocity of ball hitting is about 40 km/h, the value calculated by using the velocity of entrance Vn of 40 km/h is used as the ratio E of coefficients of restitution Er and Eh of a rubber ball and a hardball, that is, E=1.45. The prescribed height Htr mentioned above is calculated as Htr=D−D/E, and therefore, the sum Htrm of heights of ball catching assisting portions 21 and 22 for the thumb and the middle finger is Htrm=20.5−20.5/1.45=6.36 (mm). The sum Htrr of heights of ball catching assisting portions 21 and 23 for the thumb and the ring finger is Htrr=26.6−26.6/1.45=8.26 (mm). Further, the sum Htrl of heights of ball catching assisting portions 21 and 24 for the thumb and the little finger is Htrl=19.7−19.7/1.45=6.11 (mm). When the values Htrm, Htrr and Htrl satisfy the relation above, it becomes possible for an experienced baseball player to catch a rubber ball with the same feeling as catching a hardball. Ball catching tool 1 in which, by way of example, ball catching assisting portions 21, 22, 23 and 24 have the height of 3 mm, 3.36 mm, 5.26 mm and 3.11 mm, respectively, satisfies the relation of Htrm, Htrr and Htrl above.
Among the values Htrm, Htrr and Htrl, Htrr is the maximum, and therefore, it is preferred to set the sum of height of ball catching assisting portion 21 for the thumb and the height of any of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger to at least 8.26 (mm). In that case, it is possible for an experienced baseball player to catch a rubber ball with the same feeling as catching a hardball.
In order that a beginner of baseball catches a rubber ball with the same feeling as an experienced baseball player catching a hardball, the height of ball catching assisting portion 20 must be set to a prescribed height Htr′.
In order to calculate the prescribed height Htr′, first, the height Hltr′ of ball catching assisting portion 20 for “a beginner of baseball to catch a hardball” with “the same feeling as an experienced baseball player catching a hardball” is calculated. Then, using the ratio between the coefficients of restitution of the rubber ball and the hardball, the height Hltr′ of ball catching assisting portion 20 for “a beginner of baseball to catch a hardball with the same feeling as an experienced baseball player catching a hardball” is converted to the height Htr′ of ball catching assisting portion 20 for “a beginner of baseball to catch a rubber ball with the same feeling as an experienced baseball player catching a hardball.”
Here, the height Hltr′ of ball catching assisting portion 20 can be calculated from D (distance of finger movement for catching a hardball)−Dltr′ (distance of finger movement of a beginner of baseball in ball catching time T2 of experienced baseball player for catching a hardball).
When the calculated height Hltr′ of ball catching assisting portion 20 is converted to Htr′, it is necessary to take into consideration that the time for the beginner to be able to move his/her finger becomes shorter, as a rubber ball tends to bounce stronger than a hardball. Thus, the height Htr′ of ball catching assisting portion 20 is calculated as Htr′=D−Dltr′/E.
The value Hltr′ above is calculated as Hltr′=D−D/T2e×T2s. Therefore, Htr′=D−Dltr′/E=D−D/T2e×T2s/E.
Consequently, the sum Htrm′ of heights of ball catching assisting portions 21 and 22 for the thumb and the middle finger becomes Htrm′=20.5−20.5/0.11×0.07/1.45=11.5 (mm). The sum Htrr′ of heights of ball catching assisting portions 21 and 23 for the thumb and the ring finger becomes Htrr′=26.6−26.6/0.11×0.07/1.45=14.9 (mm). Further, the sum Html′ of heights of ball catching assisting portions 21 and 24 for the thumb and the little finger becomes Htrl′=19.7−19.7/0.11×0.07/1.45=11.1 (mm). By way of example, ball catching assisting portions 21, 22, 23 and 24 for the thumb, middle finger, ring finger and little finger having the heights of 6 mm, 5.50 mm, 8.93 mm and 5.05 mm, respectively, satisfy the relation of Htrm′, Htrr′ and Htrl′ described above. Among the values Htrm′, Htrr′ and Htrl′ above, Htrr′ is the maximum, and therefore, the sum of height of ball catching assisting portion 21 for the thumb and the height of any of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger should preferably be set to at least 14.9 (mm). In that case, it becomes possible for a beginner of baseball to catch a rubber ball with the same feeling as an experienced baseball player catching a hardball.
Referring to
At the boundary between peripheral surface 33b and upper surface 32, a ridge portion 34b is formed, and at the boundary between peripheral surface 33c and upper surface 32, a ridge portion 34c is formed. Ridge portion 34b extends in a direction crossing ridge portion 34c. In the present embodiment, upper surface 32 of ball catching assisting portion 21 for the thumb is formed approximately as an isosceles triangle with a right angle, and ridge portion 34c is approximately orthogonal to ridge portion 34b. Here, the ridge portion is formed by intersection of two flat or curved surfaces having normals of different directions, that is, formed by intersecting points between the two surfaces extending as a straight or curved line, at the boundary between the two surfaces.
Here, the meaning of “ridge” includes not only the intersecting line of two surfaces but also a curved surface positioned at the boundary region of the two surfaces and providing smooth connection of the two surfaces. The surface means both flat surface and curved surface.
Referring to
Here, referring to
The width Wa of ball catching assisting portion 21 in the direction along the root portion of thumb-stall 2 (width in the width direction of thumb-stall 2) is larger than the width La in the direction from the root portion to the tip end of thumb-stall 2 (width in the longitudinal direction of thumb-stall 2). Therefore, it is likely that the ball entering pocket portion 90 is caught by ridge portion 34b. Here, the width direction of index-finger-stall 4 refers to the direction along the root portion of index-finger-stall 4, that is, the direction of an arrow W in
Though the width Wa of ball catching assisting portion 21 for the thumb is made larger than the width La, it is not limiting. By way of example, the width Wa of ball catching assisting portion 21 for the thumb may be the same as the width La, or the width La may be made larger than Wa. By making the width La of ball catching assisting portion 21 for the thumb larger than the width Wa, it becomes possible to firmly catch the ball at ridge portion 34c when catching the ball at web portion 3.
Ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and the little finger are formed in the similar manner as ball catching assisting portion 21 for the thumb.
At the boundary between peripheral surfaces 43b, 53b and 63b and upper surfaces 42, 52 and 62, ridge portions 44b, 54b and 64b are formed, and at the boundary between peripheral surfaces 43c, 53c and 63c and upper surfaces 42, 52 and 62, ridge portions 44c, 54c and 64c are formed. Ridge portions 44c, 54c and 64c are arranged to extend from the tip end side of middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7 to the side of pocket portion 90.
Ridge portions 44b, 54b and 64b extend in a direction crossing ridge portions 44c, 54c and 64c. In the present embodiment, upper surfaces 42, 52 and 62 of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger are each formed approximately as an isosceles triangles with a right angle, and ridge portions 44b, 54b and 64b extend in a direction approximately orthogonal to the ridge portions 44c, 54c and 64c.
Inclined surfaces 41, 51 and 61 are formed to incline gradually upward from bottom side toward vertex portions 45, 55 and 65. Further, inclined surfaces 41, 51 and 61 are curved surfaces sinking toward the vertex portions 45, 55 and 65, conforming to the ball surface.
Inclined surfaces 41, 51 and 61 are formed toward a side surface 7a of little-finger-stall 7, on edge portion 80. Specifically, inclined surfaces 31, 41, 51 and 61 formed at respective ball catching assisting portions 20 are arranged such that their height increases gradually from the side of edge portion 80 to the side of pocket portion 90 of ball catching tool 1. The ball enters from the side of edge portion 80 of ball catching tool 1 and proceeds from edge portion 80 to pocket portion 90, and therefore, inclined surfaces 31, 41, 51 and 61 are arranged to be gradually higher from the entrance side along the traveling direction of the ball.
Further, inclined surfaces 41, 51 and 61 are formed such that the width in the direction crossing the bottom side increases gradually from the end portion to the central portion of the bottom side. Therefore, the thickness in the height direction at the boundary between inclined surfaces 41, 51 and 61 and peripheral surfaces 43a, 53a and 63a becomes gradually thinner from the end portion to the central portion of the bottom side. Of the boundary between inclined surfaces 41, 51 and 61 and peripheral surfaces 43a, 53a and 63a, the central portion is formed to be the thinnest.
Preferably, there is no step between ball catching surface skin 10 and the central portion of the boundary between inclined surfaces 41, 51 and 61 and peripheral surfaces 43a, 53a and 63a, so that the central portion of inclined surfaces 41, 51 and 61 and ball catching surface skin 10 are continued smooth.
Further, on a lower surface of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger, outlet seams 47, 57 and 67 are formed along an outer peripheral portion of peripheral surfaces 43, 53 and 63 and protruded outward.
As shown in
Here, referring to
As described above, ball catching tool 1 includes ball catching assisting portions 20 of which height from the highest position of the upper surface to ball catching surface skin 10 set in the above-described manner, and therefore, it assists the player in catching the ball, by supplementing the distance of finger movement.
On the other hand, by making the width La, Lc or Wd larger than the width Wa, Wc or Ld along the width direction for at least one of the ball catching assisting portions 20, the distance allowing gripping of the ball entering pocket portion 90 can be made longer, and even if ball catching operation started late, the ball would be successfully caught, without setting the height of each of the ball catching assisting portion 20 in the above-described manner.
Preferably, the width Wa is made larger than the width La of ball catching assisting portion 21 for the thumb. Further, at least one of ball catching assisting portions 22 and 23 for the middle finger and ring finger is provided, and the width Lc is set larger than the width Wc of the provided ball catching assisting portion 22 or 23 for the middle finger or the ring finger. By such setting, it becomes possible to catch the ball in pocket portion 90 by ridge portion 34b of ball catching assisting portion 21 for the thumb and, even when the ball catching operation delays, it is possible to catch the ball by ball catching assisting portion 22 or 23 for the middle finger or the ring finger.
Ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger are arranged such that ridge portions 44b, 54b and 64b face pocket portion 90. Therefore, it follows that pocket portion 90 is surrounded by ridge portion 34b of ball catching assisting portion 21 for the thumb, and ridge portions 44b, 54b and 64c of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger.
Therefore, in catching a ball with pocket portion 90, the ball is gripped by ridge portion 34b of ball catching assisting portion 21 for the thumb, and ridge portions 44b, 54b and 64c of ball catching assisting portions 20 other than ball catching assisting portion 21 for the thumb. Further, at this time, the ball is also pinched by upper surface 32 of ball catching assisting portion 21 for the thumb and upper surfaces 42, 52 and 62 of ball catching assisting portions 20 other than ball catching assisting portion 21 for the thumb. Specifically, when the ball is gripped, the stress generated between the ball and ball catching assisting portions 20 other than ball catching assisting portion 21 for the thumb is supported by the ridge 34b of ball catching assisting portion 21 for the thumb. Therefore, by making longer the ridge portion 34b of ball catching assisting portion 21 for the thumb than ridge portions 44b, 54b and 64c of ball catching assisting portions 20 other than ball catching assisting portion 21 for the thumb, it becomes possible to successfully support at ridge portion 34b the force applied by ridge portions 44b, 54b and 64c to the ball, and slipping of the ball can be suppressed.
Here, each of the ball catching assisting portions 20 has a prescribed height, and therefore, ridge portions 34b, 44b, 54b and 64c of respective ball catching assisting portions 20 arranged along pocket portion 90 are also formed at desired positions from the surface of ball catching surface skin 10. Thus, when ball catching assisting portion 20 is provided one at each of thumb-stall 2, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7, it is possible to hold the ball successfully by ridges 34b, 44b, 54b and 64c provided at respective ball catching assisting portions 20.
Though ball catching assisting portion 20 is formed to have a triangular shape as viewed from above in Embodiment 1, the shape is not limited. By way of example,
Further, the vertex portion of each ball catching assisting portion 20 may be rounded.
In
Further, vertex portion 35b positioned at the boundary between ridge portions 34c and 34a may also have a curved shape that smoothly connects ridge portions 34c and 34a to each other. By rounding vertex portion 35b as well, even when the ball collides against vertex portion 35b as the ball enters, the velocity of the ball going out from ball catching tool 1 can be reduced. Ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger may also be formed in the similar manner.
The upper surface of ball catching assisting portion 20 provided on ball catching tool 1 in accordance with Embodiment 1 is adapted to have a flat surface. It is, however, not limiting. By way of example, the upper surfaces of ball catching assisting portions 20 may be entirely inclined.
Further, the upper surface of ball catching assisting portion 24 for the little finger is also inclined with its height gradually decreasing from the vertex portion 65 closest to pocket portion 90 to the side of side surface 7a of little-finger-stall 7, to the tip end side of little-finger-stall 7 and toward the edge portion 80 positioned on the side of opening 81. Further, upper surfaces 42 and 52 of ball catching assisting portions 22 and 23 for the middle finger and ring finger are also inclined with their height gradually decreasing from the vertex portions 45, 55 furthest from the side surface 7a of little-finger-stall 7 to the side of side surface 7a of little-finger-stall 7, tip end portions of finger-stalls and toward the edge portion 80 positioned on the side of opening 81. Therefore, when the ball enters from the side of side surface 7a of little-finger-stall 7 or when the ball enters from the tip end side of little-finger-stall 7, ring-finger-stall 6 or middle-finger-stall 5, entrance of the ball is not hindered by ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and the little finger.
As shown in
Therefore, upper surface 32 of ball catching assisting portion 21 for the thumb is inclined with its height increasing from the tip end portion of thumb-stall 2 to the side of pocket portion 90, and curved with its height increasing from the side of side surface 2a of thumb-stall 2 and the side of edge portion 80 of opening 81 to the inner side of ball catching tool 1.
Therefore, even when the ball enters from the tip end side or from the side of side surface 2a of thumb-stall 2, or from the side of edge portion 80 positioned on the side of opening 80, into ball catching tool 1, ball catching assisting portion 21 for the thumb does not hinder entrance of the ball. Specifically, entrance of the ball is not hindered by ball catching assisting portion 21 for the thumb no matter from which direction the ball comes into ball catching tool 1. Further, ball catching assisting portion 21 for the thumb has an approximately semi-circular peripheral surface 34 that stands straight from ball catching surface skin 10, on the side of the pocket portion 90. Ball catching assisting portions 24, 23 and 22 for the little finger, ring finger and middle finger are also adapted not to hinder the traveling of the ball even when the ball enters form the side of side surface 7a of little-finger-stall 7 or from the side of tip end portion of each finger stall.
Ball catching assisting portions 20 have ridge portions 34, 44, 54 and 64 as intersecting lines between upper surfaces 32, 42, 52 and 62 and peripheral surfaces 33, 43, 53 and 63, at the boundaries between upper surfaces 32, 42, 52 and 62 of curved shape and peripheral surfaces 33, 43, 53 and 63 arranged along pocket portion 90, so as to catch the ball that fits in pocket portion 90. Ridge portions 34, 44, 54 and 64 may be formed as curved surfaces that smoothly connect upper surfaces 32, 42, 52 and 62 to peripheral surfaces 33, 43, 53 and 63.
By forming upper surfaces of other ball catching assisting portions 20 in the similar manner, ridge portions 49 may be formed on upper surfaces of respective ball catching assisting portions 20.
As the ridge portion 49 is formed at the upper surface of each ball catching assisting portion 20, when the ball is pinched between ball catching assisting portions 20, the force on the fingers of the user is concentrated on the ridge portion 49 of each ball catching assisting portion 20, and hence, a large force could be exerted on the ball. Thus, it is possible to grip the ball successfully.
Ball catching assisting portion 20 may be adapted to have a circular or polygonal shape when viewed from above.
Ball catching assisting portion 21 for the thumb includes upper surface 32 formed to have opposite end portions protruded semi-circularly outward along the width direction of thumb-stall 2, and peripheral surface 33 positioned around the upper surface. The ridge portion, which is the intersecting line between upper surface 32 and peripheral surface 33 and positioned at the boundary between upper surface 32 and peripheral surface 33 includes ridge portion 34b arranged along pocket portion 90, ridge portion 34a arranged opposite to opposite end portion 34b, and ridge portion 34c smoothly connecting ridge portions 34a and 34b to each other and having a semi-circular shape with the radius of curvature larger than 3 mm. Specifically, upper surface 32 and peripheral surface 33 do not have any vertex portion of which radius of curvature is, for example, not larger than 3 mm. Therefore, even when the ball collides against ball catching assisting portion 21 for the thumb, the stress generated between the ball and ball catching assisting portion 21 for the thumb can be reduced, and hence, large bound of the ball can be suppressed. Ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger are also formed in the similar manner.
Ball catching assisting portion 21 for the thumb is inserted to hole 10a from the back side of ball catching surface skin 10. Base 21B is sewn to ball catching surface skin 10. Specifically, outlet seam 37 shown in
Further, ball catching assisting portion 21 for the thumb is sewn to ball catching surface skin 10 at base 21B. Therefore, when the ball is held, positional deviation or uplifting of ball catching assisting portion 21 for the thumb from ball catching surface skin 10 is suppressed. Thus, it is possible by ball catching assisting portion 21 for the thumb to firmly hold the ball in ball catching tool 1.
Ball catching assisting portion 21 for the thumb is inserted to hole 10a from the back side of ball catching surface skin 10. Base 21B is sewn to ball catching surface skin 10. Specifically, outlet seam 37 shown in
Leather 21D is arranged to cover upper surface 32 and peripheral surface 33 of protruded portion 21A, and formed to extend outward at the lower surface side of protruded portion 21A. On the lower surface side of leather 21D, base 21B is arranged. At the side of outer peripheral edge of leather 21D and base 21B, ball catching surface skin 10, leather 21D and base 21B are sewn together. Specifically, at this ball catching assisting portion 21 for the thumb, outlet seam 37 shown in
Protruded portion 21A extends outward. The portion extending outward formed at the lower surface of protruded portion 21A and base 21B arranged at the lower surface of protruded portion 21A are sewn to ball catching surface skin 10. Specifically, in ball catching assisting portion 21 for the thumb shown in
Therefore, at ball catching assisting portion 21 for the thumb shown in
Ball catching assisting portion 21 for the thumb shown in
Therefore, by selecting any of the ball catching assisting portions 21 for the thumb shown in
When protruded portions 21A of ball catching assisting portion 21 for the thumb shown in
Therefore, when ball catching assisting portions 21 for the thumb are formed of the same material, ball catching assisting portion 21 for the thumb shown in
When ball catching assisting portion 21 for the thumb is formed as shown in
Ball catching assisting portion 21 for the thumb shown in
Further, ball catching assisting portions 21 for the thumb shown in
Further, ball catching assisting portion 21 for the thumb shown in
Ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger are structured similar to ball catching assisting portion 21 for the thumb. Specifically, ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger each include a base and a protruded portion provided on the base, and the protruded portion is inserted to the hole formed in ball catching surface skin 10. Ball catching assisting portions 21, 22, 23 and 24 for the thumb, middle finger, ring finger and little finger may have mutually different type structures.
As to the height of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger, the height is defined as the distance from the surface of ball catching surface skin 10 to the upper surface 42, 52 and 62 of ball catching assisting portions 22, 23 and 24 for the middle finger, ring finger and little finger, as in ball catching assisting portion 21 for the thumb.
In Embodiment 1, ball catching assisting portion 20 is sewn to ball catching surface skin 10 and inseparable from ball catching tool 1. The ball catching assisting portion 20 of the present invention, however, may be provided separate from ball catching tool 1. Specifically, ball catching assisting portion 20 may be provided as a structure separate and independent from ball catching tool 1, and it may be attached to the surface of ball catching surface skin 10 of ball catching tool 1 by adhering means such as a two-sided tape. Particularly, when the ball catching surface skin is formed of artificial leather, ball catching assisting portion 20 formed of resin or the like can satisfactorily adhered on ball catching surface skin 10.
Further, as shown in
Further, tip end assisting portions 71, 72 and 73 may be provided at tip end portions of index-finger-stall 4, middle-finger-stall 5 and ring-finger-stall 6, as shown in
In the present embodiment, ball catching assisting portions 21, 22, 23 and 24 for the thumb, middle finger, ring finger and little finger respectively have inclined surfaces 31, 41, 51 and 61. However, these are not limiting. Specifically, ball catching assisting portions 21A, 22A, 23A and 24A for the thumb, middle finger, ring finger and little finger having peripheral surfaces 33A, 43A, 53A and 63A formed approximately vertical to ball catching surface skin 10 as shown in
As described above, ball catching assisting portion 22 for the middle finger shown in
When catching a hardball, rubber ball or softball using the ball catching tool 1 structured as described above, the hardball, rubber ball or softball can be held firmly even if there is a difference between the distance of finger movement by the wearer and the distance of finger movement necessary for catching the ball, as the difference can be compensated for by the height of ball catching assisting portions 20.
Particularly, a softball has larger diameter than a hardball or rubber ball, and therefore, the distance of finger movement necessary for catching a softball is smaller than the necessary distance for catching a hardball or rubber ball. Therefore, when catching a softball by ball catching tool 1 described above, the user can catch the ball almost solely by simply turning the ball catching surface of ball catching tool 1 to face the softball, hardly moving his/her fingers.
Further, as ridge portions 34b, 44b, 54b and 64c are formed at ball catching assisting portions 20 arranged along pocket portion 90, it is possible to successfully fix the held ball within ball catching tool 1 by the ridge portions 34b, 44b, 54b and 64c.
Further, as inclined surfaces 31, 41, 51 and 61 are formed at ball catching assisting portions 20, travel of the ball is not hindered by ball catching assisting portions 20 when the ball enters ball catching tool 1.
Specifically, inclined surfaces 31, 41, 51 and 61 formed at ball catching assisting portions 20 are formed inclined upward gradually from the side of edge portion 80 to the pocket portion 90, that is, inclined gradually from the direction of entrance of the ball along the course of the ball.
Therefore, when the ball enters ball catching tool 1, ball catching assisting portion 20 is low in height and hence ball catching assisting portion 20 does not hinder entrance of the ball, and as the ball proceeds in ball catching tool and reaches pocket portion 90, ball catching assisting portion 20 is higher and hence, the ball that has been fit in the pocket portion 90 does not easily go out from ball catching tool 1.
Particularly, ridge portions 34b, 44b, 54b and 64c of ball catching assisting portions 20 are arranged around pocket portion 90, and hence, the ball fitted in pocket portion 90 is caught by ridge portions 34b, 44b, 54b and 64c on the side of pocket portion 90, and hence, slipping of the ball out from pocket portion 90 is suppressed.
A ball that touches near opening portion 81 is pinched by ridge portions 34b and 64b, and held in ball catching tool 1. A ball that touches near web portion 3 is pinched by ridge portion 34c and 44c, and held in ball catching tool 1.
Further, ball catching assisting portion 20 is formed to have an approximately triangular shape when viewed from above, and therefore, when the ball hits a portion closer to the tip end portion than ball catching assisting portion 20 and rolls down into pocket portion 90, ball catching assisting portion 20 hardly hinders rolling of the ball. Further, as ridge portions 34c, 44c, 54c and 64c are formed from the tip end side of thumb-stall 2, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7 to the side of pocket portion 90, even when a ball touches the tip end side of ball catching tool 1, the ball is guided by ridge portions 34c, 44c, 54c and 64c from the tip end side of ball catching tool 1 to the pocket portion 90.
When ball catching assisting portions 20 are divided to provide divided ball catching assisting portions 21a, 21b, 22a, 22b, 23a, 23b and 24a, 24b, the ball comes to be pressed by a plurality of portions, and hence, the ball can be gripped firmly.
Further, ball catching assisting portions 21, 22, 23 and 24 for the thumb, middle finger, ring finger and little finger have upper surfaces 32, 42, 52 and 62 provided with flat surfaces 32a, 42a, 52a and 62a, and hence, it is easy to grip the ball at flat surfaces 32a, 42a, 52a and 62a, and the ball can be kept in ball catching tool 1.
When the ball catching surface skin is formed of artificial leather and ball catching assisting portion 20 is formed separate and independent from ball catching tool 1, it is possible to the user to set the height of ball catching assisting portion 20, and further, to set the position of arranging ball catching assisting portion 20, in consideration of his/her ability. It is noted that ball catching assisting portion 20 may be easily mounted on an existing ball catching tool, if the tool is formed of artificial leather. Ball catching tool 1 is not limited to a glove such as shown in Embodiment 1, and includes a first-baseman's glove and a catcher's mitt.
In ball catching tool 1 of Embodiment 1, ball catching assisting portions 20 of similar shapes are provided at thumb-stall 2 and other finger-stalls. It is not limiting, and ball catching assisting portions 20 of different shapes may be provided on the thumb- and other finger-stalls.
Table 13 below represents results of sensory test on 15 trial subjects, using ball catching tool 1 with ball catching assisting portions 20 with different heights and hardness. Evaluation was given by each of the 15 subjects on 5 point scale, that is, one subject evaluates with 5 being the highest, and the total is given as “score (in 75 points)”, and “Evaluation” is a 100-point equivalent of the 75-point-scale score.
From Table 13, it can be understood that preferable height of ball catching assisting portion 20 is 5.0 (mm) and 7.5 (mm). Further, preferable hardness of ball catching assisting portion 20 is 10 (c) and 20 (c). The height of ball catching assisting portion 20 of Table 13 represents the height of one ball catching assisting portion.
Embodiment 2 of the present invention will be described with reference to
Bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger are all formed such that the front surface of ball catching surface skin 10 bulges outward. Further, sponge or the like is filled in each of bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger.
Bulged portion 122 for the middle finger includes an extending portion 122a formed extending from the root portion to the tip end portion of middle-finger-stall 5, and a bent portion 122b arranged at an end portion on the root side of extending portion 122a and bent toward adjacent ring-finger-stall 6. Bulged portion 123 for the ring finger includes an extending portion 123a formed extending from the root portion to the tip end portion of ring-finger-stall 6, and a bent portion 123b arranged at an end portion on the root side of extending portion 123a and bent toward adjacent little-finger-stall 7. Further, bulged portion 124 for the little finger includes an extending portion 124a formed extending from the root portion to the tip end portion of little-finger-stall 7, and a bent portion 124b arranged at an end portion on the root side of extending portion 124a and bent toward side surface 7a of little-finger-stall 7 of edge portion 80. These bent portions 122b, 123b and extending portion 124a are arranged around pocket portion 90.
In the present embodiment, bulged portions 120 are arranged at the root portions of middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7. The arrangement, however, is not limited thereto. Specifically, bulged portion 120 may be formed on at least one portion of thumb-stall 2 or a finger-stall 11 or on a root portion thereof, except for thumb-stall 2 or finger-stall 11 that have ball catching assisting portion 20 formed thereon, among thumb-stall 2, middle-finger-stall 5, ring-finger-stall 6 and little-finger-stall 7. Preferably, ball catching assisting portion 21 for the thumb as ball catching assisting portion 20 may be provided on thumb-stall 2 or at the root portion thereof, and bulged portion 120 is formed at any of middle-finger-stall or its root portion, ring-finger-stall 6 or its root portion, or little-finger stall 7 or its root portion. In the present embodiment also, ball catching assisting portion 21 may be formed as a structure separate and independent from ball catching tool 1.
In Embodiment 2, the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 122 for the middle finger is set to at least 6.15 mm and at most 26.6 mm. The sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 123 for the ring finger is set to at least 6.15 mm and at most 26.6 mm. Further, the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 124 for the little finger is set to at least 6.15 mm and at most 26.6 mm. Here, the height of bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger is defined as the distance from the surface of ball catching surface skin 10 to the upper surface of bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger. When a bulged portion for the thumb is formed, the height of bulged portion for the thumb is also defined as the height from the surface of ball catching surface skin 10 to the upper surface of bulged portion for the thumb.
When bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger are formed, first, metal mold having a recessed portion modeling the shape of bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger is prepared.
Then, leather is pressed along the inner wall surface of the recessed portion. Sponge or the like is inserted to the recess formed in the leather. Then, a base material is arranged on the leather and on the upper surface of sponge. Thereafter, bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger are formed by hot press, on ball catching surface skin 10.
In ball catching tool 100 of Embodiment 2, as ridge portion 34b formed on ball catching assisting portion 21 for the thumb, bent portions 122b and 123b and extending portion 124a are arranged around pocket portion 90, the ball, once fit in pocket portion 90, is caught by ridge portion 34b, bent portions 122b and 123b and the extending portion 124a, and prevented from slipping out from pocket portion 90. Thus, satisfactory ball catching is possible.
A ball that touches web portion 3 is pinched between ridge portion 34c of ball catching assisting portion 21 for the thumb and extending portion 122a of bulged portion 122 for the middle finger, and held in ball catching tool 100. A ball that touches near opening portion 81 is pinched between ridge portion 34c of ball catching assisting portion 21 for the thumb and bent portion 124b of bulged portion 124 for the little finger, and held in ball catching tool 100. In this manner, in Embodiment 2 also, even when the ball touches at a position slightly off from the pocket portion 90, the ball can be held in ball catching tool 100.
Further, bulged portions 122, 123 and 124 for the middle finger, ring finger and little finger are all formed by embossing, and sponge is arranged therein. Therefore, these portions easily deform by the force of fingers of the user, to conform to the circumferential surface of the ball in pocket portion 90. Therefore, the force of fingers of the user is well transmitted to the ball in pocket portion 90, and the ball can be held firmly. Further, in Embodiment 2 also, the height of ball catching assisting portions are set in the similar manner as in Embodiment 1, and hence, function and effects similar to Embodiment 1 above can be attained.
Referring to
Bulged portion 223 for the little finger includes an extending portion 223a arranged to extend from the root portion to the tip end portion of little-finger-stall 7 and a bent portion 223b arranged at the root portion of extending portion 223a. Bent portion 223b is arranged to extend from the root portion of little-finger-stall 7 to the side of side surface 7a of little-finger-stall 7 of edge portion 80. The sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 222 for the middle and ring fingers is set to be at least 6.15 mm and at most 26.6 mm, and the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 223 for the little finger is set to be at least 6.15 mm and at most 26.6 mm.
In ball catching tool 200 of Embodiment 3, as bent portion 222b and extending portion 223a are arranged around pocket portion 90, the ball that touches pocket portion 90 is caught by bent portion 222b and extending portion 223a and kept in pocket portion 90, so that satisfactory ball catching is possible. Particularly when bulged portion 222 for the middle and ring fingers is coupled to bulged portion 223 for the little finger, the ball that has entered the pocket portion 90 is firmly fixed by bent portion 225b and downward portion 225c. Specifically, long bent portion 225b and downward portion 225c deform along the circumferential surface of the ball that has entered pocket portion 90, and fix the ball in pocket portion 90. Thus, the ball is kept in pocket portion 90.
Further, when a ball touches near web portion 3, it can be pinched between ridge portion 34c of ball catching assisting portion 21 for the thumb and extending portion 222a of bulged portion 222 for the middle and ring fingers, and held in ball catching tool 200. When a ball touches near opening portion 81, the ball is pinched between ridge portion 34b of ball catching assisting portion 21 for the thumb and bent portion 223b of bulged portion 223 for the little finger, and held in ball catching tool 200.
When bulged portion 225 is provided, a ball that touches web portion 3 is pinched by extending portion 225a of bulged portion 225 and ridge portion 34c of ball catching assisting portion 21 for the thumb, and held in ball catching tool 200. Further, a ball that touches near opening portion 81 is pinched by ridge portion 34b of ball catching assisting portion 21 for the thumb and bent portion 225d of bulged portion 225. In this manner, in Embodiment 3 also, even when the ball touches at a position slightly off from the pocket portion 90, the ball can be held in ball catching tool 200.
As in Embodiment 1 described above, in ball catching tool 200 in accordance with Embodiment 3, the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 222 for the middle and ring fingers is set to be at least 6.15 mm and at most 26.6 mm, and the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 223 for the little finger is set to be at least 6.15 mm and at most 26.6 mm. Further, the sum of heights of ball catching assisting portion 21 for the thumb and bulged portion 225 is also set to be at least 6.15 mm and at most 26.6 mm. Therefore, function and effects similar to those of Embodiment 1 above can be attained.
Further, as the bulged portion is provided as in Embodiment 2, function and effects similar to those of Embodiment 2 above can be attained.
Referring to
Within surface skin 316, a lining, not shown, is provided. The lining includes an inner-thumb-stall, an inner-index-finger-stall, an inner-middle-finger-stall, an inner-ring-finger-stall and an inner-little-finger-stall, not shown, to which the thumb, index finger, middle finger, ring finger and little finger are inserted.
The peripheral portion of thumb-stall 302 includes an outer edge portion 302a and an inner edge portion 302b. Outer edge portion 302a of thumb-stall 302 consists of a tip end portion of thumb-stall 302 and a side surface that is exposed outward, of the side surfaces of thumb-stall 302. Further, inner edge portion 302b of thumb-stall 302 consists of the side surface adjacent to web portion 303, of the side surfaces of thumb-stall 302.
The peripheral portion of finger-stall 304 includes an outer edge portion 304a and an inner edge portion 304b. Outer edge portion 304a of finger-stall 304 is formed of a side surface that is exposed outward, of the side surfaces of finger-stall 304 and the tip end portion of finger-stall 304. Inner edge portion 304b of finger-stall 304 is formed of the side surface adjacent to web portion 303, of the side surfaces of finger-stall 304.
The peripheral portion of opening portion 381 consists of an edge portion 381a on the side of ball catching surface skin 310 and an edge portion, not shown, on the side of dorsal skin 309. The peripheral portion of the opening of mitt 300 arranged to face the ball includes outer edge portion 302a of thumb-stall 302, edge portion 381a on the side of ball catching surface skin 310 of opening portion 381, outer edge portion 304a of finger-stall 304, and the tip end of web portion 303. A ball enters mitt 300 from the peripheral portion of mitt 300.
Mitt 300 includes a ball catching assisting portion 320, and ball catching assisting portion 320 includes ball catching assisting portion 321 for the thumb provided at the root portion of thumb-stall 302, and a ball catching assisting portion 322 for the finger-stall arranged at the root portion of finger-stall 304. Ball catching assisting portion 321 may be arranged at the belly portion of thumb-stall 302, and ball catching assisting portion 322 for the finger-stall may be arranged at the belly of finger-stall 304.
Ball catching assisting portion 321 for the thumb includes an upper surface 332 formed to have an approximately triangular shape when viewed from above, and a peripheral surface 333 arranged on an outer peripheral portion of upper surface 332. Of upper surface 332, the side of outer edge portion 302a of thumb-stall 302 has an inclined surface 331. Further, on the side of pocket portion 390 of upper surface 332, a flat surface 332a is formed. Inclined surface 331 has its height increased from the side of outer edge portion 302a to the side of pocket portion 390.
Peripheral surface 333 includes a peripheral surface 333a arranged on the side of outer edge portion 302a of outer peripheral portion of upper surface 332, a peripheral surface 333b adjacent to one side of upper surface 332, and a peripheral surface 333c adjacent to the other side of upper surface 332. At the boundary between peripheral surface 333b and upper surface 332, a ridge portion 334b is formed, and at the boundary between peripheral surface 333c and upper surface 332, ridge portion 334c is formed.
Ridge portion 334b of ball catching assisting portion 321 for the thumb is arranged along pocket portion 390. Further, ridge portion 334c is arranged along inner edge portion 302b of thumb-stall 302.
Ball catching assisting portion 322 for the finger-stall is structured in the similar manner as ball catching assisting portion 321 for the thumb described above. Ball catching assisting portion 322 for the finger-stall includes an upper surface 342 formed to have an approximately triangular shape when viewed from above, and a peripheral surface 343 arranged at the outer peripheral portion of upper surface 342. Of upper surface 342, on the side of outer edge portion 304a of finger-stall 304, an inclined surface 341 is formed, and on the side of pocket portion 390 of upper surface 342, a flat surface 342a is formed. Inclined surface 341 has its height increased from the side of outer edge portion 304a to the side of pocket portion 390.
Peripheral surface 343 includes a peripheral surface 343a arranged on the side of outer edge portion 304a of outer peripheral portion of upper surface 342, a peripheral surface 343b adjacent to one side of upper surface 342, and a peripheral surface 343c adjacent to the other side of upper surface 342. At the boundary between peripheral surface 343b and upper surface 342, a ridge portion 344b is formed, and at the boundary between peripheral surface 343c and upper surface 342, ridge portion 344c is formed.
Ridge portion 322 of ball catching assisting portion 322 for the finger-stall is arranged along pocket portion 390. Further, ridge portion 344c is arranged along inner edge portion 304b of finger-stall 304.
Here, the height of ball catching assisting portion 321 for the thumb is defined as a distance from the surface of ball catching surface skin 310 to the upper surface 332 of ball catching assisting portion 321 for the thumb, and the height of ball catching assisting portion 322 for the finger-stall is defined as the distance from the surface of ball catching surface skin 310 to the upper surface 342 of ball catching assisting portion 322 for the finger-stall. The sum of heights of ball catching assisting portion 321 for the thumb and ball catching assisting portion 322 for the finger-stall is at least 6.15 mm and at most 26.6 mm. Though ball catching assisting portion 320 includes ball catching assisting portion 321 for the thumb and ball catching assisting portion 322 for the finger-stall in Embodiment 4, it is not limiting.
In this case, the height of ball catching assisting portion 321 for the thumb is set to at least 6.15 mm and at most 26.6 mm.
Though ball catching assisting portion 322 for the finger-stall is arranged at a portion on the ball catching side surface of finger-stall 304 where the inner-index-finger-stall or the inner-middle-finger-stall, not shown, is arranged inside, the position is not limited thereto. Specifically, ball catching assisting portion 322 for the finger-stall may be arranged on at least one of the portion where the inner-index-finger-stall is arranged inside, the portion where the inner-middle-finger-stall is arranged inside, the portion where the inner-ring-finger-stall is arranged inside, and the portion where the inner-little-finger-stall is arranged inside, on the ball catching side surface of finger-stall 304.
Preferably, ball catching assisting portion 322 for the finger-stall is arranged at a portion on the ball catching side surface of finger-stall 304 where the inner-index-finger-stall or the inner-middle-finger-stall is arranged inside, as shown in
Specifically, when ball catching assisting portion 322 for the finger-stall is arranged at a portion of the surface of finger-stall 304 where the inner-index-finger-stall or the inner-middle-finger-stall is arranged, the ball can instantaneously be pinched when it enters web portion 303, as ridge portions 344c and 334c are adjacent to each other.
Divided ball catching assisting portion 321a1 for the thumb has a ridge portion 334b1 extending along the peripheral portion of pocket portion 390, and divided ball catching assisting portion 321a2 for the thumb also has a ridge portion 334b2 extending along the peripheral portion of pocket portion 390. Further, divided ball catching assisting portion 322a1 for the finger-stall has a ridge portion 344b1 extending along the peripheral portion of pocket portion 390, and divided ball catching assisting portion 322a2 for the finger-stall also has a ridge portion 344b2 extending along the peripheral portion of pocket portion 390. Therefore, when a ball fits in pocket portion 390, the ball is kept in pocket portion 390 as ridge portions 334b1, 334b2, 344b1 and 344b2 are arranged along the circumferential surface of the ball.
Further, the ball that has entered pocket portion 390 comes to be in contact at a larger number of points with divided ball catching assisting portions 321a1, 321a2 for the thumb and divided ball catching assisting portions 322a1 and 322a2 for the finger-stall, so that the ball can be kept firmly in pocket portion 390.
In mitt 300 in accordance with Embodiment 4 in
Particularly, for a first-baseman's mitt that catches the ball mostly at the web portion 303, it is preferred to arrange ball catching assisting portion 322 for the finger-stall at a portion on the ball catching surface skin of ball catching assisting portion 322 for the finger-stall where the inner-index-finger-stall or the inner-middle-finger-stall is arranged inside.
In mitt 300 structured as described above, when the ball is caught by web portion 303, the ball tends to be caught by ridge portions 344c and 334c, and hence, the ball can be kept firmly in mitt 300. When ball catching assisting portion 321 for the thumb or ball catching assisting portion 322 for the finger-stall is adapted to include divided ball catching assisting portions 321a1 and 321a2 for the thumb or ball catching assisting portions 322a1 and 322a2 for the finger-stall, the ball comes to be in contact at a larger number of points with divided ball catching assisting portions 321a1, 321a2 for the thumb and divided ball catching assisting portions 322a1 and 322a2 for the finger-stall, so that the ball can be kept firmly in pocket portion 390. Further, as ridge portions 334b1, 334b2, 344b1 and 344b2 are arranged along the circumferential surface of the ball that fits in pocket portion 390, the ball can be firmly kept in pocket portion 390.
Mitt 300 in accordance with Embodiment 4 has the similar structure as Embodiment 1 described above, and therefore, function and effects similar to those of ball catching tool 1 in accordance with Embodiment 1 can be attained.
Referring to
Thumb-stall 402 and finger-stall 404 are formed elongate along the peripheral portion of mitt 400. The rim of thumb-stall 402 includes an outer edge portion 402a consisting of a side surface exposed outward and a tip end portion, and an inner edge portion 402b, which is a side surface adjacent to web portion 403.
The rim of finger-stall 404 includes an outer edge portion 404a consisting of a side surface exposed outward and a tip end portion, and an inner edge portion 404b, which is a side surface adjacent to web portion 403. The peripheral portion of mitt 400 includes tip end portion of web portion 403, outer edge portion 402a of thumb-stall 402, and outer edge portion 404a of finger-stall 404.
Ball catching assisting portion 422 for the finger-stall extends from that one of the side surfaces of finger-stall 404 which is adjacent to web portion 403, to the other side surface. Further, ball catching assisting portion 422 for the finger-stall includes an upper portion 442 and a peripheral surface 443 arranged around the upper surface 442.
Upper surface 442 includes a flat surface 442a arranged on the side of pocket portion 490 and an inclined surface 441 arranged on the side of outer edge portion 414a. Inclined surface 441 has its height increased from the side of outer edge portion 404a to the side of pocket portion 490. Peripheral surface 443 includes a peripheral surface 443a adjacent to inclined surface 441 and facing the peripheral portion of mitt 400, and a peripheral surface 443b vertical to ball catching surface skin 410. At the boundary between upper surface 442 and peripheral surface 443, a ridge portion 444b is formed.
Peripheral surface 443a and inclined surface 441 are arranged facing the peripheral portion of mitt 400. Flat surface 442a is arranged along pocket portion 490.
At the boundary between peripheral surfaces 443a and 443b, ridge portions 444c and 444d are arranged. Ridge portion 444d is arranged on the side of web portion 403, and ridge portions 444c and 444d are arranged opposite to each other. The height of ball catching assisting portion 422 for the finger-stall is the distance from the surface of finger-stall 404 to the upper surface 442. The height of ball catching assisting portion 422 is at least 6.15 mm and at most 26.6 mm. Except for the points described above, the structure is the same as Embodiment 4.
When catching a ball with mitt 400 in accordance with Embodiment 5, even when the user closes thumb-stall 402 and finger-stall 404 by only a small distance from when the ball touches the surface of pocket portion 490 until it goes out, the ball can be pinched between the surfaces of ball catching assisting portion 422 and thumb-stall 402. Specifically, the necessary distance of movement of thumb-stall 402 and finger-stall 404 from when the ball touches the surface of pocket portion 490 until it goes out is sometimes different from the distance of movement of thumb-stall 402 and finger-stall 404 moved by the user. Even in that case, in mitt 400 in accordance with Embodiment 5, the height of ball catching assisting portion 422 for the finger-stall compensates for the distance of closing thumb-stall 402 and finger-stall 404, and therefore, the ball is held within mitt 400. Here, the ball is caught by the ridge portion of ball catching assisting portion 422 for the finger-stall, and kept in pocket portion 490. Further, as flat surface 442a is formed at the upper surface 442 of ball catching assisting portion 422 for the finger-stall, the ball can be pinched between flat portion 442a of ball catching assisting portion 422 for the finger-stall and the surface of thumb-stall 402.
Mitt 400 structured as described above can easily grip the ball, as ball catching assisting portion 422 for the finger-stall compensates for the distance of closing thumb-stall 402 and finger-stall 404. Further, when a ball fits in pocket portion 490, the ball is caught by ridge portion 444b, and thus, the ball is kept in pocket portion 490.
Further, flat surface 442a is formed on ball catching assisting portion 422 for the finger-stall, and the ball is pinched between the flat surface 442a and the ball catching side surface of thumb-stall 402, whereby the ball can firmly be gripped.
Upper surface 432 includes an inclined surface 431 arranged on the side of outer edge portion 402a and a flat surface 432a connected to inclined surface 431 and arranged on the side of pocket portion 490.
Inclined surface 431 is arranged facing outer edge portion 402a of thumb-stall 402, and has its height increased from outer edge portion 402a toward pocket portion 490.
Further, at the boundary between upper surface 432 and peripheral surface 433b of ball catching assisting portion 432 for the thumb, a ridge portion 434b is formed. Ridge portion 434b extends along the peripheral portion of pocket portion 490.
At the boundary between peripheral surfaces 433a and 433b, ridge portions 434c and 434d are arranged. Ridge portions 434c and 434d are arranged opposite to each other, and ridge portion 434d is arranged on the side of web portion 403. Further, the height of ball catching assisting portion 432 for the thumb is set to at least 6.15 mm and at most 26.6 mm.
As inclined surface 431 is formed at ball catching assisting portion 421 for the thumb in mitt 400 shown in
Further, ball catching assisting portion 421 for the thumb is formed to have the prescribed height as described above, and therefore, when the user catches a ball, it compensates for the distance of closing thumb-stall 402 and finger-stall 404. Therefore, similar to mitt 400 shown in
The sum of heights of ball catching assisting portion 421 for the thumb and ball catching assisting portion 422 for the finger-stall is set to be at least 6.15 mm and at most 26.6 mm.
Ball catching assisting portion 421 for the thumb includes an upper surface 432 and a peripheral surface 433 arranged on the peripheral portion of upper surface 432. Peripheral surface 433 includes a peripheral surface 433a arranged facing outer edge portion 402a of thumb-stall 402 and a peripheral surface 433b arranged on the side of pocket portion 490 and vertical to ball catching surface skin 410. At the boundary between peripheral surface 433b and upper surface 432, a ridge portion 434b is formed. Ridge portion 434b is arranged along the peripheral portion of pocket portion 490.
Further, at the boundary between peripheral surfaces 433a and 433b, ridge portions 434c and 434d are formed. Ridge portions 434c and 434d are arranged approximately vertical to the ball receiving surface skin 410. Further, ridge portion 434d is arranged on the side of web portion 403.
Ball catching assisting portion 422 for the finger-stall includes an upper surface 442 and a peripheral surface 443 formed at the peripheral portion of upper surface 442. Peripheral surface 443 includes a peripheral surface 443a arranged facing outer edge portion 404a of finger-stall 404, and a peripheral surface 443b arranged on the side of pocket portion 490 and vertical to ball catching surface skin 410. At the boundary between upper surface 442 and peripheral surface 443b, a ridge portion 444b is formed. Ridge portion 444b extends along the peripheral portion of pocket portion 490. At the boundary between peripheral surfaces 443a and 443b, ridge portions 444c and 444d are formed, and ridge portions 444c and 444d are arranged approximately vertical to the surface of ball catching surface skin 410. Ridge portion 444d is arranged on the side of web portion 403.
As mitt 400 is structured as described above, when a ball fits in pocket portion 490, the ball is caught by ridge portion 434b of ball catching assisting portion 421 for the thumb and ridge portion 444b of ball catching assisting portion 422 for the finger-stall, and the ball is kept in pocket portion 490. Further, in mitt 400 shown in
Divided ball catching assisting portions 422a1 and 422a2 for the finger-stall are arranged along the peripheral portion of pocket portion 490. Further, divided ball catching assisting portion 422a1 for the finger-stall includes a ridge portion 444b1 extending along the peripheral portion of pocket portion 490, and divided ball catching assisting portion 422a2 for the finger-stall includes a ridge portion 444b2 extending along the peripheral portion of pocket portion 490. The sum of heights of divided ball catching assisting portions 421a1 and 421a2 for the thumb and divided ball catching assisting portions 422a1 and 422a2 for the finger-stall is set to at least 6.15 mm and at most 26.6 mm.
In mitt 400 shown in
Though embodiments applied to baseball catching tools for catching a baseball, specifically, baseball catching tool for catching a hardball and baseball catching tool for catching rubber ball have been described above, the ball catching assisting portions may be provided in the similar manner as the embodiments above, on softball catching tools for catching a softball, to attain similar effects.
Though the present invention has been described above, it is originally contemplated that structures of various embodiments are appropriately combined with each other. The scope of the present invention is not limited to the embodiments described above. The scope of the present invention is determined by each of the claims and embraces modifications within the meaning of, and equivalent to, the languages in the claims.
Although the present invention has been described and illustrated in detail, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of the present invention being limited only by the terms of the appended claims.
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| 2005-025156 | Feb 2005 | JP | national |
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| 20060200886 A1 | Sep 2006 | US |
