TECHNICAL FIELD
This disclosure relates to an adjustable archery training bow that includes a single resistance element and an adjustment mechanism that can be actuated by a user to selectively vary the tension level in the resistance element for training purposes.
BACKGROUND
Archery is a sport that dates back centuries and archery practice, hunting and competitions can be found world-wide. An archer's technique, in terms of the archer's balance, stability, composure and strength, is critical for ensuring accuracy, range and consistency in delivering an arrow to the target. These skills can be acquired or improved through continual practice at different draw weights for the bow. However, such practice may be difficult considering time, financial or equipment constraints. Regarding this last constraint, there is no conventional training bow that provides an adequate platform for easily varying the draw weight without the use of extraneous tools and/or equipment. The ability to practice using multiple draw weights is also limited by the fact an archer would need access to a range of bows with correspondingly different draw weight ranges, as most conventional bows have a draw weight range of only 30 pounds, at the most. Further, conventionally practicing the release of a bow is a crucial aspect of ensuring accuracy, range and consistency in delivering an arrow to the target. However, practicing the release of a conventional bow can only be achieved by releasing a live arrow, which requires an adequate facility, along with multiple arrows. Dry-firing, or firing a conventional bow without an arrow may damage a conventional bow. With a training bow that does not fire live arrows, users are limited to interacting with the bow and aiming in similar fashion as they would a conventional bow. Another shortcoming of existing training bows is that many, if not all, lack a sense of realism in bow size, shape and weight.
Accordingly, there is an unmet need for an adjustable archery training bow able to provide an archer with variable draw weights via a single resistance band, while being operable in nearly any environment, including indoors, and allowing the archer to repeatedly practice releasing an arrow by dry-firing the training bow with the use of a sighting device to increase the archer's accuracy.
SUMMARY
The present disclosure provides an adjustable archery training bow that includes a single resistance element and a tension adjustment mechanism that can be actuated by a user to selectively vary the tension level in the resistance element for training purposes. Because the single resistance element can be selectively varied by the user, multiple resistance elements or bands are not necessary which significantly improves the functionality and versatility of the disclosed adjustable training bow.
An adjustable archery training bow assembly may include a main body, and a resistance member disposed between a first end of the main body and a second end of the main body, wherein a first end of the resistance member is fixedly attached to the first end of the main body and a second end of the resistance member is attached to the second end of the main body by an adjustable tension mechanism that permits a user to vary the tension of the resistance member.
Other features and advantages of the disclosure will be apparent from the following specification taken in conjunction with the following drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawing figures depict one or more implementations in accord with the present teachings, by way of example only, not by way of limitation. In the figures, like reference numerals refer to the same or similar elements.
FIG. 1 illustrates an adjustable archery training bow according to an embodiment of the present disclosure, showing a resistance element of the training bow being drawn by a user from an initial position.
FIG. 2 is a perspective view of the training bow of FIG. 1, showing the user drawing the resistance element to a drawn position and a laser pointed on a wall-mounted target.
FIG. 3 is a right perspective view of the training bow.
FIG. 4 is a left perspective view of the training bow.
FIG. 5 illustrates a level mounted to a portion of the training bow.
FIG. 6 illustrates a first housing of the training bow, showing a first end of a resistance element secured within the first housing.
FIG. 7 is an exploded view of a second housing and a tension adjustment mechanism of the training bow.
FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 3, showing the tension adjustment mechanism of the training bow.
FIG. 9 is a perspective view of the tension adjustment mechanism and the resistance element in a first state.
FIG. 10 is a perspective view of the tension adjustment mechanism and the resistance element in a second state.
FIG. 11 is a perspective view of the tension adjustment mechanism and the resistance element in a third state.
FIG. 12 is a cross sectional view of the tension adjustment mechanism and a release mechanism in a released position.
FIG. 13 is a cross sectional view of the tension adjustment mechanism and a release mechanism in an engaged position.
DETAILED DESCRIPTION
While this disclosure includes a number of details and embodiments in many different forms, there is shown in the drawings and will herein be described in detail particular embodiments with the understanding that the present disclosure is to be considered as an exemplification of the principles of the disclosed methods and systems, and is not intended to limit the broad aspects of the disclosed concepts to the embodiments illustrated.
This disclosure relates to an adjustable archery training bow 10 including a single resistance element 18 and an adjustment mechanism 170 that can be actuated by a user 14 to vary the tension level in the resistance element 18 for training purposes. The adjustable archery training bow 10 is used to enhance the user's skills, such as his/her strength, stability and accuracy in delivering an arrow fired from a real, non-training bow to the target. The tension level in the resistance element 18 determines the draw weight of the element 18 at a particular setting. By using the adjustment mechanism 170 to vary the tension level of the element 18, the user 14 can selectively vary the draw weight of the training bow 10 which improves the user's strength while training with the bow 10.
As shown in FIGS. 1 and 2, the training bow 10 includes the resistance element 18 and a main body 30 including a first limb 34 and a second limb 38. In the embodiment shown in the Figures, the element 18 is configured as a flexible band or rubber tube that extends between a first end 42 of the first limb 34 and a second end 46 of the second limb 38. The main body 30 also includes an integral grip 50 formed in the second limb 38, where the user 14 places his hand to grasp the training bow 10. The main body 30 includes one or more apertures 54 formed adjacent to horns 56. In FIG. 1, the user 14 has begun to draw the resistance element 18 from an initial or first position 22. FIG. 2 shows the user 14 further drawing the resistance element 18 to a second or drawn position 26, where due to the change in its geometry, the resistance element 18 has increased tension compared to that of the first position.
The training bow 10 also includes a vibration damper 58 that extends laterally and rearward from the main body 30, preferably from a location above the grip 50. The vibration damper 58 terminates in a damper end 62, a rearward-facing surface of which may be concave in shape. When the user 14 draws and releases the resistance element 18, the released resistance element 18 contacts the damper end 62, and vibrations and energy from the released resistance element 18 are reduced through contact with the damper end 62.
The main body 30 may also include a level 66, as best shown in FIGS. 2 and 5. The level 66 indicates the orientation of the bow 10 to the user 14, about an axis or a surface (e.g., the ground). Thus, the user 14 can quickly and easily determine an orientation of the bow 10 about the axis, which may be an axis coincident with, or substantially parallel to, a laser beam 86, described below. The level 66 can be a mechanical level that includes a gas bubble 70 within a fluid 74 in a marked tube. An instant location of the gas bubble 70 within the fluid 74 provides the user 14 with a simple and reliable orientation indicator for bow 10.
The main body 30 of the training bow 10 also includes a laser sight 78. The laser sight 78 mounts to the main body 30 via a laser port 82. As shown in FIG. 2, the laser sight 78 produces the laser beam 86 originating from the laser sight 78 and travelling to a target 90. Upon reaching the target 90, the laser beam 86 produces a visible laser point 94 on the target 90. By watching the laser beam 86 and/or the laser point 94, the user 14 can monitor stability and consistency when using the training bow 10, namely drawing and releasing the resistance element 18. The main body 30 may also include one or more attachment ports 95. One or more of the attachment ports 95 may be a stabilizer port 98, and may be used to mount a stabilizer (not shown). The stabilizer port 98 allows users 14 to attach a conventional bow stabilizer to adjust the weight and forward balance of the adjustable archery training bow 10 based on user 14 preference, such that the user 14 can simulate the feel of a conventional bow that they use to fire live arrows.
The first end 42 of the main body 30 includes a first housing 100 that receives and secures a first end 104 of the resistance element 18, as shown in FIG. 6. The first housing 100 includes a side wall 103 that extends along a substantial extent of the periphery of the housing 100 while exposing a gap that allows for reception of the resistance element 18, as discussed below. A first housing cover 112 is removably attached to the first housing 100 to define a first housing cavity 108. A first housing fastener 116, such as a pin or threaded screw, extends from an inner surface of the first housing cover 112 and is received by a receptacle 120 formed in a first internal retaining body 105 of the first housing 100, wherein the cover 112 is removably connected to the housing 100. The first housing 100 also includes a second internal retaining body 107 that is cooperatively positioned with the first internal retaining body 105 to define a retaining channel 128 that extends inward from a periphery of the first housing 100. The removable connection between the first housing cover 112 and the first housing 100 allows the user 14 to access to the first housing cavity 108 for maintenance or replacement of the resistance element 18 and/or the first end 104 of the element 18.
The resistance element first end 104 may include a first securing element 124, such as a bead, ball-bearing, rod and pin that is located within the first end 104. Alternatively, the first end 104 could be tied in a knot to define the securing element 124. By various mechanical means, including crimping, adhesives or other techniques, the first securing element 124 is securely attached to the resistance element first end 104. A portion of the resistance element first end 104 extends through the retaining channel 128 and reaches a first receptacle 132 which securely retains the first securing element 124 and an adjacent extent of the resistance element first end 104, thus securing the first end 104 of the resistance element 18 to the first end 42. The second end 46 of the main body 30 includes a second housing 136 that adjustably secures a second end 152 of the resistance element 18, as shown in FIGS. 7-13. The second housing 136 includes a circular side wall 138 that mates with a second housing cover 140 to cooperatively form a second housing cavity 144. By various mechanical arrangements and as discussed below, the second housing cover 140 is rotatably connected to the second housing 136. Similar to the first securing element 124, a second securing element 148 is securely attached to the resistance element second end 152. The second securing element 148 may a bead or ball-bearing that is enclosed within or retained by a resistance element second end 152 by various mechanical means, including crimping, adhesives or other attachment techniques. The second end of the resistance element 152 extends through a second channel 156 formed in a boss 158 extending from an inner surface of the second cover 140 and reaches a second receptacle 160 in the boss 158. The second receptacle 160 securely retains the second securing element 148 and an adjacent extent of the resistance element second end 152, thus securing the second end of the resistance element 152 to the second housing cover 140. Accordingly, as the second housing cover 140 is rotatably connected to the second housing 136, the second end of the resistance element 152 is also rotatably connected to the second housing 136. Further, the second end of the resistance element 152 is also rotatably connected to the second end 46 of the bow 10.
As best shown in FIGS. 7 and 8, the second end 46 includes the tension adjustment mechanism 170 that is configured to vary the tension of the resistance element 18 between its first end 104 and second end 152. In an embodiment, the user 14 can vary the tension of the resistance element 18 by manipulating the adjustable tension mechanism 170. In particular, the user 14 can vary the tension of the resistance element 18 by grasping a handle 164 formed on the external surface of the second housing cover 140 and rotating the second housing cover 140 relative to the second housing 136.
Referring to FIGS. 7-13, the adjustment mechanism 170 includes a cover piece 174, a bolt 178, a washer 182, a ratchet wheel 186 and means for restricting undesired rotation 200. The rotation restricting means 200 is configured as a ring 202, washer or spacer. The bolt 178 extends through the washer 182 and a second housing aperture 184 and threadably connects to a ratchet wheel 186 positioned within the second housing 136. Referring to FIG. 8, the bolt 178 threadably attaches to a nut 185 embedded in the ratchet wheel 186. The ratchet wheel 186 includes a plurality of teeth 190 arranged along the outer periphery of the ratchet wheel 186. Fasteners 194, such as screws or pins, extend through wheel apertures 196 and attach to the second housing cover 140 via the boss 158, such that the ratchet wheel 186 rotates with the second housing cover 140 when it is actuated by the user 14. Further, the securing of the ratchet wheel 186 with the boss 158 assists in securing the second securing element 148 and the resistance element second end 152 within the second receptacle 160. The ring 202 is disposed within a circumferential track 204 formed in an internal wall of the second housing 136. The ring 202 is relatively thin metal object with a wavy, non-planar configuration. The ring 202 is further disposed between the second housing 136 and the ratchet wheel 186, whereby the ring 202 serves to frictionally limit rotation between the second housing 136 and the second housing cover 140 by imparting a frictional force on the ratchet wheel 186 and/or the second housing 136.
The adjustment mechanism 170 further includes a release mechanism 208 positioned adjacent the second housing 136 in a neck region 47 of the second end 46 of the main body 30. The adjustment mechanism 170 comprises an actuator 212, a pawl 216, a coil spring 220 that receives an extent of the actuator 212 and a coil spring 224 that resides substantially within pawl 216. The pawl 216 is moveable between an engaged positions P1 (see FIG. 12) and a released position P2 (see FIG. 13), the latter causing a tip 218 of the pawl 216 to be engaged with the teeth 190 of the ratchet wheel 186. When the pawl 216 is in the engaged position P1, as illustrated in FIG. 12, the ratchet wheel 186 is rotatable in one direction (e.g., counter-clockwise) but not in another direction (e.g., clockwise). This rotational aspect corresponds to the ratchet wheel 186 being rotatable in a direction that increases the tension in the resistance element 18 while not being rotatable in a direction that decreases the tension in the resistance element 18. When the pawl 216 is in the released position P2, as illustrated in FIG. 13, the ratchet wheel 186 is rotatable in both directions (e.g., counter-clockwise and clockwise). The actuator 212, configured as a depressible button, is biased away from the pawl 216 by the spring 220, while the pawl 216 is biased towards the ratchet wheel 186 and the engaged position P1 by the pawl spring 224, which resides within a cavity 226 formed in the neck region 47 of the second end 46. In operation, the user 14 depresses the actuator 212 inward and toward the pawl 216 in the direction shown by the arrow in FIG. 13. The actuator 212 acts on an inclined surface 228 of the pawl 216 and thereby moves the pawl 216 into the released position. The release mechanism 208, and components thereof, are secured and contained in the second end 46 by a release cover 232. When the user 14 removes pressure from the actuator 212, the actuator 212 moves away from the pawl 216 and the pawl 216 moves towards and into contact with the ratchet wheel 186 and the adjustment mechanism 170 returns to the engaged position P1 of FIG. 12.
FIGS. 9-11 illustrate embodiments of first, second and third states, respectively, of the tension adjustment mechanism 170 and the resistance element 18, focusing on the second end 152 of the resistance element 18. The various states impact the draw weight of the element 18, which is a measure of the force needed to pull the element 18 from the initial position (see FIG. 1) to the drawn position P2 (see FIG. 2). FIG. 9 shows the adjustment mechanism 170 and the resistance element 18 in a first state of tension S1. FIG. 10 shows the adjustment mechanism 170 and the resistance element 18 in a second state of tension S2 which places the element 18 in greater tension than that of the first tension state S1. Additionally, the draw weight of the resistance element 18 in the second state S2 is greater than the draw weight of the resistance element 18 in the first state S1. Further, a cross-sectional area A2 and a cross-sectional diameter D2 of the resistance element 18 in the second state S2 is less than a cross-sectional area A1 and a cross-sectional diameter D1 of the resistance element 18 in the first state S1. The user 14 can grasp and actuate the handle 164 to rotate the second housing cover 140 relative to the second housing 136, which selectively increases the tension and draw weight of the resistance element 18. Actuating the handle 164 in the clockwise direction causes the second end of the resistance element 152 to progressively wrap around the second bead receptacle 160 and the boss 158 of the second housing cover 140 and within the second housing cavity 144, thereby increasing the tension between the opposed ends of the element 18 and its draw weight. The user 14 rotates the handle 164 in a clockwise direction shown by the arrow in FIG. 10 to increase the tension of the resistance element 18 and move from the first state S1 to the second state S2.
FIG. 10 shows the resistance element 18 and the adjustment mechanism 170 in a third state of tension S3 which the user 14 has selectively arrived at by further actuating the handle 164. In the third state S3, the element 18 is in greater tension than that of the first or second states S1, S2. Also, the draw weight of the resistance element 18 in the third state S3 is greater than the draw weight in either the first or second states S1, S2. Further, a cross-sectional area A3 and a cross-sectional diameter D3 of the resistance element 18 in the third state is less than cross-sectional areas Al and A2, as well as cross-sectional diameter D1 and D2 of the resistance element 18. Thus, the cross-sectional area A of and cross-sectional diameter D of the resistance element 18 vary inversely with the tension of the resistance element 18. As the tension of the resistance element 18 increases, the cross-sectional areas and diameters decrease, and as the tension of the resistance element 18 decrease, the cross-sectional areas and diameters increase.
The user 14 can grasp and actuate the handle 164 to rotate the second housing cover 140 relative to the second housing 136 in the manner described above. Further actuating the handle 164 in the clockwise direction causes a greater extent of the second end of the resistance element 152 to progressively wrap around the second bead receptacle 160 and the boss 158 of the second housing cover 140 and within the second housing cavity 144, thereby further increasing the tension between the opposed ends of the element 18 and its draw weight. The user 14 rotates the handle 164 in a clockwise direction shown by the arrow in FIG. 11 to increase the tension of the resistance element 18 and move the second state S2 to the third state S3.
As explained above, the user 14 can actuate the handle 164 of the adjustment mechanism 170 to move the resistance element 18 from the first state S1 to the second state S2 to the third states S3 regardless of the relative position of the pawl 216 and the ratchet wheel 186. However, the engagement between the pawl 216 and the teeth 190 of the ratchet wheel 186 precludes decreasing the tension in the resistance element 18 and moving from the third state S3 to either the second state S2 or the first state S1. To decrease the tension in the resistance element 18 and move from the third state S3 to either the second state S2 or the first state S1, the user 14 depresses the actuator 212 to move the pawl 216 to the released position P2 (see FIG. 13) and turns the handle 164 in the counter-clockwise direction which rotates the second housing cover 140 relative to the second housing 136. This rotation causes an extent of the second end of the resistance element 152 to progressively un-wrap, or unwind, from the second bead receptacle 160 and the boss 158 of the second housing cover 140, whereby the tension in the resistance element 18 is decreased.
When the user 14 wants to decrease the tension in the resistance element 18 and depresses the actuator 212 to move the pawl 216 to the released position P2 as part of the process of reducing the tension, the ring 202 prevents rapid unwinding of the second end of the resistance element 152 from the boss 158 by exerting an internal retaining force on the ratchet wheel 186 that is only overcome by the user 14 physically actuating the handle 164. In this manner, the rotation restricting means 200, for instance the ring 202, frictionally reduces a relative rotation rate of the ratchet wheel 186. Therefore, until the user 14 depresses the actuator 212 and physically actuates the handle 164, the ring 202 prevents unwanted rotation of the ratchet wheel 186 that would lead to a rapid unwinding of the second end 152 and a reduction in the tension of the resistance element 18. Alternatively, the rotation restricting means 200, including the ring 202, can be configured to apply a lesser internal retaining force on the ratchet wheel 186 when the user 14 depresses the actuator 212 whereby the wheel 186 rotates slowly and the second end 152 unwinds slowly from the boss 158 in a steady, controlled manner that does not require physical actuation of the handle 164. In this configuration, actuation of the handle 164 by the user 14 could increase the speed at which the second end 152 unwinds and the reduction in the tension of the resistance element 18.
It is further contemplated that the resistance element 18 is replaceable by removing elements of the adjustable tension mechanism 170 and the first housing cover 112 for maintenance or for installing resistance elements 18 with different mechanical properties or dimensions (e.g., replacing a first element 18 with a thicker, second element 18 to provide even greater draw weight). Additionally, in a non-limiting embodiment, the tension or resistance of the resistance element 18 is adjustable between 10 and 70 pounds by the user 14 via the adjustable tension mechanism 170. Elements and components of the adjustable archery training bow 10, as described above, can be formed from any number of materials, including metals, alloys, polymers, ceramics and composite materials, including plastics and carbon fiber-reinforced polymers.
While the foregoing has described what are considered to be the best mode and/or other examples, it is understood that various modifications may be made therein and that the subject matter disclosed herein may be implemented in various forms and examples, and that the teachings may be applied in numerous applications, only some of which have been described herein. It is intended by the following claims to claim any and all applications, modifications and variations that fall within the true scope of the present teachings. Other implementations are also contemplated.
Patent Application
20170023327
