Patent Application
20240139597
The present disclosure relates to a weight that is securable to a baseball bat or softball bat.
Baseball and softball are popular team sports that are played throughout many countries of the world. The various positions on a baseball or softball team each require specialized skills and talents. However, batting is a skill that is needed by every player of the team. When a particular player is batting (“at bat”), that player stands in a batter's box while a pitcher from the other team throws (“pitches”) the ball across a plate next to the batter's box. To hit the ball, the player must swing their bat quickly, accurately and with good technique as the ball passes across the plate at a high rate of speed. Furthermore, the player's chances of hitting the ball out of the infield are increased if the player swings their bat with strength through their arms, torso, and legs so that the ball may be driven off the bat at a high rate of speed.
A player that is soon to have their turn at bat may spend a few minutes taking practice swings with their bat to warm up their muscles and get focused on their batting technique or mechanics. Some players may even temporarily attach a weight to their bat during this warmup to activate their muscles more thoroughly. One such batting weight is a heavy ring or “doughnut” (alternatively “donut”) that is positioned near the handle or taper of the bat.
Doughnut-style batting weights are available in a variety of weights, such as 8, 10, 16, and 20 ounces. At these weights, a player swinging their bat with a doughnut may experience an amount of resistance that is enough to compromise their batting technique, especially in kids up to high school age. These weights also limit the amount of time a player can swing their bat before their muscles become fatigued and their mechanics breakdown.
An alternative to the doughnut is a weight that sits on the barrel of the bat to deliver a similar amount of weight to the bat. The drawback to this barrel style of weight is that the bat cannot be used for any hitting drill with the weight attached. Attempts to use a barrel weight on a bat during a hitting drill will lead to a baseball contacting the barrel weight, damaging the barrel weight, reducing or eliminating feedback to the player through the handle of the bat as a result of contact between the baseball and the bat, and preventing nearly all hitting drills. Although a barrel weight may be suitable for use by a player warming up in an on-deck circle, the barrel weight is wholly unworkable for a hitting drill because it obstructs the hitting area of the bat.
Some embodiments provide an apparatus comprising a first elastic ring that is manually stretchable to be received about a barrel portion of a bat and to impart an elastic force against the barrel portion of the bat and a second elastic ring that is manually stretchable to be received about a taper portion of the bat and to impart an elastic force against the taper portion of the bat. The apparatus further comprises a first fabric casing enclosing the first elastic ring and a second fabric casing enclosing the second elastic ring, wherein the second elastic ring is positionable in the taper portion of the bat with the first elastic ring positioned adjacent the distal end of the bat. The apparatus also comprises a tubular fabric sleeve having a first sleeve portion coupled to the first fabric casing and extending over the first elastic ring, a second sleeve portion covering a hitting surface of the bat, and a third sleeve portion coupled to the second fabric casing and extending over the second elastic ring. The first sleeve portion forms a distal open end of the tubular fabric sleeve and the third sleeve portion forms a proximal open end of the tubular fabric sleeve. Furthermore, the second sleeve portion has an axial length to extend over a hitting area of the bat and into a taper portion of the bat, wherein the second sleeve portion is made with a stretchable fabric and has circumferential dimensions that enable the second sleeve portion to stretch over a surface of the bat and fit snug against the surface of the bat, and wherein the second sleeve portion does not include an elastic ring.
Some embodiments provide an apparatus comprising an elastic ring manually stretchable to be received about a barrel portion of a bat and to impart an elastic force against the barrel portion of the bat, a tubular fabric sleeve extending over an outer circumferential surface of the elastic ring, and a fabric casing coupled to the tubular fabric sleeve and enclosing the elastic ring. The apparatus may be referred to as a ‘weighted batting sleeve” or similar term. The apparatus may be slid over a knob of a baseball or softball bat and slid up the bat into a position with the elastic ring near the end of the bat.
In some embodiments, the tubular fabric sleeve may extend a minimal distance in either axial direction of the elastic ring, such that the tubular fabric sleeve primarily covers the elastic ring. For example, the tubular fabric sleeve may extend between about 0.5 inches and about 1.5 inches in either axial direction of the elastic ring. Accordingly, the tubular fabric sleeve may protect the elastic ring that is positionable adjacent a distal end of the bat without extending into a hitting area of the bat. In one option, the tubular fabric sleeve that extends over the elastic ring may have an axial length from about 2 inches to about 3 inches. Other than the axial length, embodiments with a (short) tubular fabric sleeve may be constructed in the same manner as described below for longer tubular fabric sleeves.
In some embodiments, the tubular fabric sleeve includes a first sleeve portion extending over the outer circumferential surface of the elastic ring and a second sleeve portion extending from the first sleeve portion for covering a hitting area of the bat. The first and second sleeve portions are preferably formed from a single piece of fabric that is sized and shaped to form both the first and second sleeve portions. The second sleeve portion may have an axial length to extend over a hitting area of the bat and into a taper portion of the bat with the first sleeve portion positioned within an inch of a distal end of the bat, wherein the second sleeve portion has a diameter that causes the second sleeve portion to be stretched around a circumference of the bat and to impart an elastic force against the bat. The second sleeve portion forms a durable and responsive hitting surface while serving to secure the elastic ring to the bat. The fabric used to form the tubular fabric sleeve is stretchable and elastic to apply an elastic force against the surface of the bat. Accordingly, a total amount of static friction between the second sleeve portion and the bat is generally proportional to the total contact area between the second sleeve portion and the surface of the bat.
In some embodiments, the second sleeve portion may have a circumference that tapers toward a proximal end of the second sleeve portion. For example, the second sleeve portion may taper in proportion to an amount of taper (i.e., a gradual reduction in diameter) of a taper portion of a particular bat or the second sleeve portion may taper in a manner that will universally fit the barrel and taper portions of all bats within a particular barrel classification or standard for bat dimensions. The fabric used to form the second sleeve portion may be stretchable to fit a range of bat dimensions, including a range of lengths, a range of diameters, and/or a range of tapers. Although not a requirement, the second sleeve portion preferably has circumferential dimensions that enable the second sleeve portion to be stretched over a surface of the bat and fit snug against the surface of the bat.
Embodiments of the apparatus may be configured for use with any current or future barrel classification. There are currently three main barrel classifications, where each barrel classification specifies a maximum barrel diameter of 2.25 inches, 2.625 inches, and 2.75 inches. For example, softball uses a consistent 2.25-inch maximum diameter for all players from youth play to Olympic competition. Baseball uses all three main barrel classifications for metal bat competition, including a 2.625-inch maximum diameter for high school and National Collegiate Athletic Association (NCAA) competition, and a 2.75-inch maximum diameter for various age groups and organizations for players between the ages of 5 and 14. Most wooden baseball bat models have a diameter between 2.40 inches and 2.61 inches. The maximum diameter for a bat used in Major League Baseball (MLB) play is 2.61 inches. However, embodiments may be made with various diameters, lengths and weights of the elastic rings for use with a bat having any known diameter.
In some embodiments, the tubular fabric sleeve is made with a plated fabric having a plated side that forms an outer surface of the tubular fabric sleeve and an unplated side that forms an inner surface of the tubular fabric sleeve. The plated side of the fabric is both durable against wear that may occur due to hitting baseballs or softballs and the plates reduce the extent to which the fabric stretches. For example, the plated fabric may optionally include a fabric layer that is polyester, nylon and/or spandex, such as a blend of nylon and spandex. The plated fabric may further have discrete plates formed on the fabric layer. For example, the discrete plates may be formed with ceramic or a polymer, such as an epoxy. Furthermore, the discrete plates may be arranged in a repeating pattern, such as a hexagonal pattern, on the outer surface of the fabric layer. The fabric layer has elasticity and is stretchable, but embodiments use the discrete plates to limit an amount of stretch in the fabric for the purpose of hitting a baseball or softball with a fabric-covered hitting area of a bat. A high degree of elasticity may significantly reduce an amount of friction between the bat and the ball since the fabric may stretch and/or slide rather than cause friction. The discrete plates are formed into the fibers on one side of the fabric and are rigid. The arrangement or pattern of the discrete plates and the size of the individual plates on the fabric may determine the effect on the stretchability of the fabric in one or more dimensions since the fabric directly under the plates has very limited stretchability and substantially all of the stretchability of the fabric comes from the areas of fabric between the plates. A repeating hexagonal pattern is believed to limit stretchability substantially evenly in all directions within a plane of the fabric. The tubular fabric sleeve is preferably thin to maintain natural feedback from a batted ball. For example, the tubular fabric sleeve may have a thickness of about 0.5 millimeters to about 1.5 millimeters, or more particularly a thickness of about 0.8 millimeters to about 1.1 millimeters. It is believed that the plated fabric will easily withstand over 100,000 hits.
Some embodiments of a plated fabric may be obtained from Higher Dimension Materials of St. Paul, Minnesota, that sells SuperFabric® brand materials. SuperFabric® materials come in a variety of plate patterns or arrangements. By changing the plate pattern, including the size of gap between plates and the shape of the individual plates, certain performance criteria can be enhanced or decreased such as cut or abrasion resistance and stretchability (effective elasticity) in addition to a unique look and design. The guard plates may, for example, be made of ceramic or a polymer, such as an epoxy. One particularly preferred plated fabric is SuperFabric® 600120-900, made of a nylon/spandex blend, and having a plate pattern identified as 80/40-300. The plate pattern may include plates that are equidistant from each other and allow for equal stretching around the barrel of a bat (a circumferential direction) as well as lengthwise down the barrel of the bat (an axial direction). The stretchability of the plated fabric allows a single size of tubular fabric sleeve to fit bats having different lengths and tapers. A hexagonal plate pattern may be formed with rows of evenly spaced plates, wherein adjacent rows are staggered by half of the spacing between plates in a row.
In some embodiments, the tubular sleeve may be cut using a pattern and sewn to have a resting diameter that is about the same as the barrel diameter of the bat or perhaps only slightly less than the barrel diameter. In one option, the tubular sleeve may have a resting circumference measurement that is between about 0 inch to about ½ inch less, most preferably about ⅛ inch less, than the circumference of the barrel portion of the bat. In a specific example, if the intended bat has a barrel diameter of 2.75 inches (a 220 mm circumference), the elastic ring may have a resting length of 180 mm such that the elastic ring must stretch 40 mm (about 22%) to be positioned around the barrel of the bat. For the same bat, the preferred plated fabric (SuperFabric® 600120-900, made of a nylon/spandex blend, and having a plate pattern identified as 80/40-300) may have a resting diameter just under the barrel diameter, such as ⅛ inch (about 3 mm) less than the 220 mm circumference of the barrel, so that the tubular fabric sleeve may lightly squeeze the hitting area of the bat, keeping the sleeve taut and not baggy. However, the tubular fabric sleeve will be significantly stretched where it extends over the elastic ring(s) and will apply an elastic force over the elastic ring(s) and against the barrel portion of the bat, in addition to the elastic force (squeeze) applied by the elastic bands themselves. An unplated fabric would need to be significantly smaller in circumference relative to the bat barrel circumference in order to fit snug on the bat and/or to apply a similar elastic force about the elastic ring(s).
In some embodiments, the fabric casing is formed with a second flexible fabric that is not a plated fabric. Optionally, the fabric casing may use a fabric made of polyester, nylon, and/or spandex, such as a blend of nylon and spandex. Spandex is believed to be a polyether-polyurea copolymer. The fabric used to make the fabric casing is preferably thin enough, such as a thickness of about 0.8 millimeters to about 1.3 millimeters, and most preferably about 1 millimeter, to precisely conform to the shape of the elastic ring and to stretch with the elastic ring as it expands over the barrel of a bat. The fabric of the fabric casing should also be durable to withstand the repeated actions of putting the device on a bat and taking it off of a bat. The casing fabric may also be thin and lightweight so that the elastic ring is the primary source of weight for the apparatus. Accordingly, the weight of the apparatus can be focused near the end of the bat where the elastic ring is positioned without having any significant amount of weight distributed along the length of the apparatus. The tubular fabric sleeve and the casing fabric are both very lightweight such that the elastic ring is the primary source of weight provided by the weighted batting sleeve.
In some embodiments, the elastic ring may be the primary source of weight for the apparatus. The fabric sleeve and casing portions are relatively lightweight in comparison to the elastic ring. The elastic ring is stretched over the barrel of the bat to apply an elastic force that is the primary manner for keeping the elastic ring in a desired position on the bat. The elastic ring preferably has an elasticity that enables the fabric encased elastic ring to be easily slid along the taper and barrel portions of the bat yet applies a sufficient elastic force against the surface of the bat to keep the elastic ring from moving because of a practice swing or hitting drill.
The elastic ring may be made with any material that has sufficient elasticity to be stretched and released to impart an elastic force against a relevant portion of the bat. The elastic force in combination with an amount of contact area will preferably form enough static friction between the fabric casing and the surface of the bat to keep the elastic ring on the bat as the batter swings the bat at a high rate of speed. In one example, the elastic ring may be made with silicone rubber, which is also known as polysiloxane. The silicone rubber may be the same material used to make inexpensive novelty bracelets or wristbands or it may be a food grade silicone rubber. The silicone rubber bands may be formed by injection molding. Optionally, the silicone rubber may be used alone or may contain additives that modify one or more physical property of the silicone rubber. Since silicone rubber weathers well and has a suitable density, additives are generally unnecessary. Furthermore, the casing fabric protects the surface of the silicone rubber from abrasion and the tubular fabric sleeve protects the casing fabric from being torn or worn.
The elastic ring may have overall dimensions, such as a length (i.e., along an inner circumference), thickness and width, that establish the weight of the elastic ring for any given elastic material. The thickness of the band is the distance from the inner surface to the outer surface, and the width of the band is the distance from one side edge to the other side edge. A preferred elastic ring may have a width between 0.5 and 2 inches, a thickness of height no greater than 0.5 inches, and a resulting weight that is between 1 and 4 ounces. In one option, the elastic ring weighs about 2 and about 3 ounces.
The one or more elastic ring(s), the elastic bands forming one or more elastic ring(s), the tubular fabric sleeve and the casing fabric each preferably have elasticity or stretchability to allow them to fit snug or even tight over the relevant parts of a bat. In fact, it is this elasticity or stretchability that imparts elastic forces against the surface of the bat to keep the weighted batting sleeve in place on the bat during practice swings and/or hitting drills. Accordingly, the stretched dimensions of each component of the weighted batting sleeve will change when stretched to be installed on a bat in accordance with the exact dimensions of the bat, such as the diameter of the barrel portion, the diameter of the taper portion, and the length of the taper portion. It should be recognized that, unless clearly stated otherwise herein, the dimensions described for embodiments of the one or more elastic ring(s), the elastic bands forming one or more elastic ring(s), the tubular fabric sleeve and the casing fabric are “resting” dimensions, meaning the dimensions in a relaxed or unstretched (no tension) condition.
The elastic ring may be positioned within about one inch from the end of the bat. Most preferably the elastic ring and/or the distal end of the sleeve may be positioned within about 0.5 inches from the distal end of the bat. Independently, the elastic ring has a total thickness that is preferably no more than about 0.5 inches. For example, if each band has a thickness of 2 millimeters, then a weighted ring could have up to six bands having a total thickness of 12 millimeters (about 0.47 inches) without exceeding the preferred limit of 0.5 inches.
In some embodiments, the elastic ring may include a plurality of concentrically nested elastic bands. For example, the plurality of concentrically nested elastic band may include from 2 to 6 elastic bands. Optionally, each of the plurality of concentrically nested elastic bands may be made with silicone rubber. Although a single thick elastic band may be used, it has been found that multiple thinner elastic bands may require less force and effort to stretch (lengthen) to fit over the barrel of the bat than for a single thick elastic band. Furthermore, making the elastic ring from a plurality of concentrically nested elastic bands facilitates preparation of weighted batting sleeves with stepwise differences in weight simply by changing the number of elastic bands that are used to form the elastic ring. It should be recognized that the definitions of length, thickness and width set out herein in reference to an elastic ring may also be used to describe the dimensions of individual elastic bands and/or the elastic ring in embodiments that form the elastic ring with a plurality of concentric nested elastic bands.
In a further option, each of the concentrically nested elastic bands may have a length that is different from the length of the each other concentrically nested elastic bands, wherein the length of the each concentrically nested elastic band increases from an inner-most one of the concentrically nested elastic bands to an outer-most one of the concentrically nested elastic bands, and wherein each of the concentrically nested elastic bands contacts each immediately adjacent one of the concentrically nested elastic bands. Optionally, each of the elastic bands may have a thickness between about 2 millimeters and about 4 millimeters, such as about 2 millimeters. The length of an elastic band is, as described herein, measured along the inner circumference of the elastic band.
In some embodiments, the plurality of concentrically nested elastic bands may have at least one pair of directly adjacent elastic bands including a first elastic band with an outer diameter and a second elastic band with an inner diameter, wherein the second elastic band has an inner diameter that is less than the outer diameter of the first elastic band and imparts an elastic force on the first elastic band. For example, a first (inner) elastic band having a length of 180 mm and a thickness of 2 mm would have an outer surface that would be flush with an inner surface of a second (outward adjacent) elastic band having a length of 192 mm. However, if the second elastic band instead has a length of 190 mm, then the second elastic band will be stretched over the first elastic band and apply an elastic (inwardly directed) force on the first elastic band.
The elastic bands have a preferred width of between about 20 mm and about 30 mm A silicone ring made with silicone bands having a width of about 25 mm and a height of no more than 0.5 inches will have a weight between about 1.25 ounces and about 4 ounces. Optionally, the silicone ring or the silicone bands may have a width of 30 mm, 35 mm or 37 mm (1.5″) wide if it is desired to make a weighted batting sleeve having additional weight. With the bands being 2 mm thick, each outward adjacent band needs to be a about 12.5 mm longer on the inner circumference than the immediately inward adjacent band in order for the surfaces of the two bands to be perfectly flush.
In some embodiments having an elastic ring formed with a plurality of concentric bands, the inner concentric bands may have a length relative to the diameter or circumference of the bat that will cause them to apply a greater elastic force against the surface of the bat than the outer concentric bands. An outer-most one of the concentric bands may also have a length relative to the inner concentric bands that will apply an elastic force on the inner concentric bands to help keep the concentric bands together in the shape of a single ring.
In one specific and non-limiting embodiment, the first two (inner-most) bands for a 2.75-inch diameter bat have lengths (i.e., 180 mm and 190 mm lengths, respectively) that are a couple of millimeters of length short of being flush when the shorter band is placed inside the longer band. Accordingly, there is a tight fit between the two bands. The next two (intermediate) bands (i.e., 202 mm and 215 mm lengths, respectively) may be flush with each other and fit exactly without stretching. The last (outer-most) band (i.e., 225 mm length) is a little shorter and tighter against the intermediate bands and hold the whole assembly of five concentric bands together in a stacked alignment.
Some embodiments of the elastic ring that include a plurality of concentric bands may further include an adhesive between any two adjacent bands. Using an adhesive may help keep the bands aligned or nested one band over the other band. One example of such an adhesive is available in spray form as E6000 from Eclectic Products Inc. of Eugene, Oregon.
Some embodiments of the plurality of concentric bands may include embossed features and debossed features that interlock with the embossed features. For example, a pair of adjacent bands may have an interlocking relationship that prevents the bands from becoming misaligned while allowing each band to stretch. In one option, a first band may have an outer surface with an embossed feature or protrusion and a second band may have an inner surface with a debossed feature or indentation that interlocks with the embossed feature or protrusion of the first band. Each band may have any number, size or arrangement of the embossed and/or debossed features for the purpose of interlocking the band with an adjacent concentric band. One non-limiting example may have three outwardly directed circular embossed (raised) features at about 120 degrees about the axis of a first band and three similar inwardly directed circular debossed (recessed or sunken) features at about 120 degrees about the axis of a second band that is directly adjacent and outward of the first band. Alternatively, the embossed feature could be a raised circumferential ridge on a first band and the debossed feature could be a recessed circumferential groove on a second that receives the circumferential ridge. The height of an embossed feature and the depth of a debossed features is preferably less than 1 millimeter.
Some embodiments provide an apparatus comprising a first elastic ring that is manually stretchable to be received about a barrel portion of a bat and to impart an elastic force against the barrel portion of the bat, and a second elastic ring that is manually stretchable to be received about a taper portion of the bat and to impart an elastic force against the taper portion of the bat. The apparatus further comprises a tubular fabric sleeve having a first sleeve portion extending over the first elastic ring, a second sleeve portion covering a hitting surface of the bat, and a third sleeve portion extending over the second elastic ring. Still further, the apparatus may comprise a first fabric casing enclosing the first elastic ring and secured to the first sleeve portion and a second fabric casing enclosing the second elastic ring and secured to the third sleeve portion, wherein the second elastic ring is positionable in the taper portion of the bat with the first elastic ring positioned adjacent the distal end of the bat. Accordingly, two separate elastic rings may be secured to a bat by a single sleeve. The elastic ring or bands near the handle or taper of the bat have a much smaller circumference, such as 120-140 millimeters, than the circumference of the elastic ring or bands positionable over the barrel of the bat, such as 180-225 millimeters. These embodiments enable a greater amount of weight to be added to the bat without either elastic ring or other obstruction being positioned in the hitting area of the bat. Optionally, the tubular fabric sleeve may include a second sleeve portion having a circumference that tapers toward the third sleeve portion.
It should be recognized that embodiments having first and second elastic rings and a tubular fabric sleeve having first, second and third sleeve portions may be constructed using the same techniques, materials, and concepts described for any of the embodiments described as having a single elastic ring. Specifically, each elastic ring may be made in the same manner, enclosed in encasing fabric in the same manner, and secured to the tubular fabric sleeve in the same manner, albeit at opposite ends of the tubular sleeve and with dimensions suited to the diameter of the relevant portions of the bat.
Embodiments of the weighted batting sleeve are preferably easy for players of all ages to secure and remove from a bat. The weighted batting sleeve is received over the knob of the bat and slid along the length of the bat until the elastic ring is positioned adjacent the end of the bat. There are no fasteners, such as Velcro straps, or retainer bands of metal, or any other material, necessary to secure the weighted batting sleeve to a bat. Furthermore, the weighted batting sleeve is slid onto the bat along the taper portion of the bat, which means that the player does not have to stretch the device to fit directly over the distal end portion of the bat.
Embodiments of the weighted batting sleeve position the elastic ring or rings outside of the hitting area of the bat. In fact, the embodiments have no obstructions in the hitting area of the bat, which allows the weighted batting sleeve to be used in various (all) hitting drills. Only the sleeve may be positioned over the hitting area of the bat, but the sleeve fabric is durable and does not interfere with hitting or tactile feedback to the hands of the batter. Furthermore, positioning the weight near the distal end of the bat for hitting drills fosters proper hitting mechanics, such as hand and bat path, and strengthens the most important portion of the swing for maximum bat speed and power. For example, positioning the weight near the end of the bat forces the batter's hands inside the baseball, a term used to describe the most efficient and powerful way to deliver force to a baseball from a bat. Keeping one's “hands inside the ball” allows the bat to stay in the hitting area for a longer time, increasing the likelihood of contact. This contact also has an increased likelihood of greater bat speed and power being delivered to the pitched baseball. In the event that the weights come into contact with a thrown ball, the fact that the weights are elastic rings, such as silicon rings or bands, means that there will be little or no damage to the ball or to the weighted batting sleeve. An optional adhesive between adjacent elastic bands helps to keep the individual elastic bands from moving or spreading out.
The tubular fabric sleeve 50 includes a first sleeve portion 52 extending over the outer circumferential surface of the elastic ring 40 and a second sleeve portion 54 extending from the first sleeve portion 52 for covering a hitting area 17 of the bat 10. The first and second sleeve portions 52, 54 are preferably formed from a single piece of fabric that is sized and shaped to form both the first and second sleeve portions. The second sleeve portion 54 may have an axial length to extend over the hitting area 17 of the bat 10 and into a taper portion 16 of the bat 10 with the first sleeve portion 52 positioned within about an inch of the distal end 20 of the bat 10. The second sleeve portion 54 has a diameter that causes the second sleeve portion 54 to be stretched around a circumference of the bat 10 and to impart an elastic force against the surface of the bat 10. Specifically, a total amount of static friction between the second sleeve portion 54 and the bat 10 is generally proportional to the total contact area between the second sleeve portion 54 and the surface of the bat 10. The second sleeve portion 54 forms a durable and responsive hitting surface that spans the hitting area 17 while serving to provide an additional or redundant manner to secure the elastic ring 40 to the bat 10. The weighted batting sleeve 30 and/or the tubular fabric sleeve 50 may be referred to as having a shape that is similar to a “truncated cone” or having a portion that is similar to a “truncated cone”, although this language should not be considered to limit the scope of the embodiments.
It should be recognized that embodiments having first and second elastic rings 40A, 40B and a tubular fabric sleeve 112 having first, second and third sleeve portions 114, 116, 118 may be constructed using the same techniques, materials, and concepts described for any of the embodiments described as having a single elastic ring. Specifically, each elastic ring may be made in the same manner, enclosed in encasing fabric in the same manner, and secured to the tubular fabric sleeve in the same manner, albeit at opposite ends of the tubular sleeve and with dimensions suited to the diameter of the relevant portions of the bat. In some embodiments, the axial length of the tubular fabric sleeve 112 may be slightly longer than the tubular fabric sleeve 60 of
As illustrated, the second elastic band 120B has an inner diameter that is less than the outer diameter of the first elastic band 120A, such that the second elastic band 120B fits “tight” about, and imparts an elastic force on, the first elastic band 120A. For example, the first (inner) elastic band 120A may have a length of 180 mm and a thickness of 2 mm to give an outer surface measuring about 192 mm. However, if the second elastic band 120B has a length of 190 mm, then the second elastic band 120B will be stretched over the first elastic band 120A and apply an elastic (inwardly directed) force on the first elastic band 120A.
The second, third and fourth elastic bands 120B, 120C, 120D are illustrated as fitting “flush”, one over the other without stretching. “Flush” means that the inner circumference of the outer band rests perfectly against the outer circumference of the inner band without any significant forces between the inner and outer bands. The last (outer-most) band 120E is a little shorter and tighter against the fourth band 120D and may hold the whole assembly of concentric bands together in a stacked alignment as shown in
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the claims. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components and/or groups, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms “preferably,” “preferred,” “prefer,” “optionally,” “may,” and similar terms are used to indicate that an item, condition, or step being referred to is an optional (not required) feature of the embodiment.
The corresponding structures, materials, acts, and equivalents of all means or steps plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. Embodiments have been presented for purposes of illustration and description, but it is not intended to be exhaustive or limited to the embodiments in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art after reading this disclosure. The disclosed embodiments were chosen and described as non-limiting examples to enable others of ordinary skill in the art to understand these embodiments and other embodiments involving modifications suited to a particular implementation.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17579123 | Jan 2022 | US |
| Child | 18405503 | US |
