Competition racket

Abstract

The utility model generally comprises a competition racket, such as a Pick ball racket. For example, game rackets disclosed herein may include a first surface, a second surface, and a core disposed between the first surface and the second surface, where the core defines a plurality of gaps that may contain one or more fillers, for example, to provide vibration damping and / or otherwise affect performance, comfort, and pleasure. In an exemplary aspect, a gap is provided on each side of the racket near its throat, the first filler being inserted into the gap. The first filler is visible within such a gap, for example, in the case that the safe edge includes a window for viewing the first filler. A racket according to the present teachings may have a frame (e.g., a frame that accommodates one or more gaps) or may be frameless. In some aspects, the frame may also or alternatively include a filler disposed therein and / or adjacent thereto.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 535,565, filed on August 30, 2023, and U.S. Provisional Patent Application No. 63 / 543,865, filed on October 12, 2023. This application also claims priority to U.S. Patent Application No. 18 / 389,174, filed on November 13, 2023, which itself claims priority to U.S. Provisional Patent Application No. 63 / 535,565, filed on August 30, 2023, and U.S. Provisional Patent Application No. 63 / 543,865, filed on October 12, 2023. Each of the foregoing applications is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to game racquets and the like, such as pickleball racquets, and methods of making and using the same. Background Art

[0004] Rackets for racket sports have been used for a long time. A racket is generally a racket without strings (e.g. a tennis racket). Rackets are used to play games such as pickleball, paddleball, etc. In particular, pickleball is a racket sport that roughly combines elements of tennis, badminton, and table tennis. It is played on a court similar to a badminton court, with a net separating the two teams. The game uses a plastic ball with holes and a solid racket made of, for example, wood, graphite, and / or a composite material. Generally, players use the racket to hit the ball over the net, with the goal of landing the ball within the boundaries of the opponent's court.

[0005] Traditionally, rackets consist of a solid core of material, such as wood, foam, or composite, sandwiched between two outer surfaces. While these designs have proven effective, there is a constant demand for improvements in racket performance, durability, and ergonomics. For example, racket design focuses on weight distribution and balance. The distribution of weight within a racket affects its maneuverability, power transfer, and overall feel in the player's hand. Another consideration in racket design is vibration reduction. The impact of a ball or other object on the racket's surface generates vibrations that can be transmitted to the player's hand and arm. Excessive vibration can cause discomfort, loss of control, and potentially lead to conditions such as tennis elbow. Durability is also a key factor in racket design. Racks are subjected to repeated impacts and changing environmental conditions, which can cause wear and tear over time. Improving the lifespan of a racket while maintaining its performance characteristics is an ongoing challenge.

[0006] As the popularity of racquet sports such as pickleball continues to grow, there remains a need for improvements that enhance player performance, comfort, and enjoyment. Utility Model Content

[0007] The present teachings generally include a game racket, such as a pickleball racket. For example, a pickleball racket disclosed herein may include a first surface, a second surface, and a core disposed between the first surface and the second surface, wherein the core defines a plurality of gaps that can accommodate one or more fillers, for example, to provide vibration damping and / or otherwise affect performance, comfort, and enjoyment. In an exemplary aspect, a gap is provided on each side of the racket near its throat, into which a first filler is inserted. The first filler is visible within such a gap, for example, where the side guard includes a window for viewing the first filler. A racket according to the present teachings may have a frame (e.g., a frame that accommodates one or more gaps) or may be frameless. In some aspects, the frame may also or alternatively include a filler disposed therein and / or adjacent thereto.

[0008] In one aspect, the pickleball racket disclosed herein may include: a front surface; a back surface opposite the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of the core; a first filler disposed within at least a portion of the gap; a frame disposed around at least the head of the pickleball racket along an edge portion of the pickleball racket, the frame being at least partially disposed along the edge portion between the front surface and the back surface, the frame defining a hollow interior portion; and a second filler disposed within at least a portion of the hollow interior portion of the frame.

[0009] Some embodiments may include one or more of the following features. One or more of the first filler and the second filler may include a foam material. One or more of the first filler and the second filler may include at least one of the following materials: a polymer, a thermoplastic, a thermoset material, a thermoplastic elastomer, an elastomer, a rubber, and an expandable material. One or more of the first filler and the second filler may include pressurized air. The second filler and the first filler may be the same material. The second filler and the first filler may be different materials. A gap may be at least partially disposed between the frame and the core. The gap may be adjacent to the frame. The frame may surround the entire pickleball racket. The frame may include carbon fiber. The frame may be a hollow cubic structure. The hollow cubic structure may be formed from a single piece of material. The core may at least partially include a honeycomb structure. The pickleball racket may include a rim guard that covers at least a portion of the frame along at least a portion of the head of the pickleball racket.

[0010] In one aspect, the pickleball racket disclosed herein may include: a front surface; a back surface opposite the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of the core along a throat of the pickleball racket; and a first filler disposed within at least a portion of the gap.

[0011] Some embodiments may include one or more of the following features. The first filler may include a material structurally configured to absorb vibrations caused by impacting a ball with one or more of the front and back surfaces of the pickleball racket. The pickleball racket may include a frame disposed along an edge portion of the pickleball racket around at least the head of the pickleball racket, the frame at least partially disposed along the edge portion between the front and back surfaces, the frame defining a hollow interior portion that may be filled with the second filler.

[0012] In one aspect, a method of making a pickleball racket is disclosed herein, which may include: forming a core of a pickleball racket, the core having a head and a handle; forming one or more gaps in the core of the pickleball racket; inserting a first filler into at least a portion of the one or more gaps; wrapping a frame around an outer edge of the core; and attaching a front surface and a back surface to the core wrapped by the frame. The frame may define a hollow interior portion. The method may also include inserting a second filler into at least a portion of the hollow interior portion of the frame.

[0013] In one aspect, the pickleball racket disclosed herein may include: a first surface; a second surface; a core disposed between the first surface and the second surface, the core comprising a first material; at least two gaps in the core defined by an absence of the first material in the core, a first gap of the at least two gaps disposed on a first side of the racket, generally adjacent to a throat of the racket, and a second gap of the at least two gaps disposed on a second side of the racket, generally adjacent to the throat of the racket; and a first filler disposed within one or more of the first gap and the second gap.

[0014] Some embodiments may include one or more of the following features. A pickleball racket may include a rim material disposed along an outer edge of the racket head. The rim may define a void adjacent to each of the first and second voids. The first filling may be visible through the void. The void may include at least a translucent material through which the first filling is visible. The first filling may include one or more markings. The one or more markings may indicate a property of one or more of the racket, the first filling, and the core. The one or more markings may include the color of the first filling. The one or more markings may include one or more of a texture and a pattern of the first filling. The void may be formed by a cutout in the rim material. The first filling may be exposed to the external environment through the cutout. The pickleball racket may include a frame disposed between the first and second surfaces. The frame may be disposed generally along or adjacent to the outer edge of the racket head. The frame may accommodate the first and second voids. The frame may include one or more recessed portions that accommodate the first and second voids. The frame may be absent along the first and second voids. The frame may be formed along an interior portion of the racket to define the boundaries of each of the first and second voids. A pickleball racket may include a gap formed in the core adjacent to the frame along an interior portion of the racket. The pickleball racket may include a second filler disposed within the gap. The second filler may be the same as the first filler. The second filler may be different from the first filler. One or more of the first filler and the second filler may include at least one of foam, ethylene vinyl acetate (EVA) foam, a polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, an expandable material, and a fluid. The frame may define an interior that may include a third filler. The third filler may be the same as the first filler. The third filler and the second filler may be different. The third filler may include compressed air. The first filler may be disposed within each of the first gap and the second gap. The first filler within each of the first gap and the second gap may be substantially the same. The first filler may penetrate one or more of the first gap and the second gap by at least 5 mm. The first filler may include one or more of foam, ethylene vinyl acetate (EVA) foam, a polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, an expandable material, and compressed air.

[0015] These and other features, aspects, and advantages of the present teachings will become better understood with reference to the following description, examples, and appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The foregoing and other objects, features, and advantages of the apparatus, systems, and methods described herein will become readily apparent from the following description of specific embodiments thereof, as illustrated in the accompanying drawings. The drawings are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the apparatus, systems, and methods described herein. In the drawings, like reference numerals generally indicate corresponding elements.

[0017] Figure 1A A front view of a racket according to a representative example is shown.

[0018] Figure 1B A top perspective view of a racquet according to a representative example is shown.

[0019] Figure 1C A rear perspective view of a racquet according to a representative example is shown.

[0020] Figure 2 A diagonal view of a hollowed-out racket is shown according to a representative example.

[0021] Figure 3 yes Figure 2 cross section.

[0022] Figure 4 A diagonal view of a racquet with added foam is shown according to a representative example.

[0023] Figure 5 yes Figure 4 cross section.

[0024] Figure 6A A diagonal view of a racket with a frame added is shown according to a representative example.

[0025] Figure 6B yes Figure 6A cross section.

[0026] Figure 7A A front perspective view of a racquet according to a representative example is shown.

[0027] Figure 7B A rear perspective view of a racquet according to a representative example is shown.

[0028] Figure 7C A side view of a racquet according to a representative example is shown.

[0029] Figure 7D A cross section of a racquet according to a representative example is shown.

[0030] Figure 7E A front view of a racket according to a representative example is shown.

[0031] Figure 7F Shown Figure 7E The cross section of section 7F-7F is shown in FIG.

[0032] Figure 7G Shown Figure 7E The cross section of section 7G-7G is shown in FIG.

[0033] Figure 7H Shown Figure 7F Detailed view of the circled area.

[0034] Figure 7I Shown Figure 7G Detailed view of the circled area.

[0035] Figure 8 A front view of a racket according to a representative example is shown.

[0036] Figure 9 A front view of a racket according to a representative example is shown.

[0037] Figure 10 A front view of a racket according to a representative example is shown.

[0038] Figure 11 A front view of a racket according to a representative example is shown.

[0039] Figure 12 A front view of a racket according to a representative example is shown.

[0040] Figure 13 A front view of a racket according to a representative example is shown.

[0041] Figure 14 A front view of a racket according to a representative example is shown.

[0042] Figure 15 A perspective view of a racket with a gap is shown according to a representative example.

[0043] Figure 16 A perspective view of a racket having a gap filled with a first filler is shown according to a representative example.

[0044] Figure 17 A perspective view of a racquet is shown with a frame added to the edge of the racquet, according to a representative example.

[0045] Figure 18 Based on a representative example Figure 17 A cross section showing the core, the first filling and the frame.

[0046] Figure 19 A perspective view of a padded racket according to a representative example is shown.

[0047] Figure 20 A perspective view of a padded racket according to a representative example is shown.

[0048] Figure 21 A perspective view of a padded racket according to a representative example is shown.

[0049] Figure 22 A perspective view of a padded racket according to a representative example is shown.

[0050] Figure 23 A perspective view of a racquet having a gap in the throat is shown, according to a representative example.

[0051] Figure 24 A perspective view of a racquet with padding in the throat is shown, according to a representative example.

[0052] Figure 25 A left side view of a racquet according to a representative example is shown.

[0053] Figure 26 A right side view of a racquet is shown according to a representative example.

[0054] Figure 27 A top view of a racket according to a representative example is shown.

[0055] Figure 28 A bottom view of a racket according to a representative example is shown.

[0056] Figure 29 A perspective view of a frame for a tennis racket is shown, according to a representative example.

[0057] Figure 30 A racket according to a representative example is shown.

[0058] Figure 31 is a flow chart of a method for manufacturing a tennis racket according to a representative example.

[0059] Figure 32 A racket with visible padding is shown according to a representative example.

[0060] Figure 33 A racket with visible padding is shown according to a representative example.

[0061] Figure 34 A side view and a cross-sectional view of a racket according to a representative example are shown.

[0062] Figure 35 A cross-section of a racket head according to a representative example is shown.

[0063] Figure 36 A cross-section of a racket head according to a representative example is shown.

[0064] Figure 37 A cross-section of a racket head according to a representative example is shown.

[0065] Figure 38A A first view is shown during formation of a racquet according to a representative example.

[0066] Figure 38B A second view is shown during formation of a racquet according to a representative example.

[0067] Figure 39 Several rackets are shown according to several representative examples. DETAILED DESCRIPTION

[0068] Embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown. However, the foregoing may be implemented in many different forms and should not be construed as limited to the illustrated embodiments set forth herein. Rather, these illustrated embodiments are provided so that the scope of this disclosure will be conveyed to those skilled in the art.

[0069] All documents mentioned herein are incorporated by reference in their entirety. References to singular items should be understood to include the plural items, and vice versa, unless expressly stated otherwise or the context clearly indicates otherwise. Grammatical conjunctions are intended to express any and all disjunctive conjunctions and conjunction combinations of connected clauses, sentences, words, etc., unless otherwise stated or clear from the context. Thus, the term "or" should generally be understood to mean "and / or," etc.

[0070] Unless otherwise specified herein, the enumeration of numerical ranges herein is not intended to be limiting, but rather to refer individually to any and all values ​​falling within the range, and each individual numerical value within the range is incorporated into the specification as if it were individually listed herein. As understood by those of ordinary skill in the art, when accompanied by numerical values, words such as "approximately," "approximately," etc. should be interpreted as indicating deviations to be satisfactorily used for the intended purpose. Similarly, when used with reference to physical properties, approximate words such as "approximately," "approximately," or "substantially" should be interpreted as intended deviation ranges, which those of ordinary skill in the art will understand to be satisfactorily used for corresponding uses, functions, purposes, etc. The ranges of values ​​and / or numerical values ​​are provided herein only as examples and do not constitute limitations on the scope of the described embodiments. Where numerical ranges are provided, they are also intended to include each numerical value within the range, as if individually set forth, unless explicitly stated otherwise. The use of any and all examples or exemplary language ("for example," "such as," etc.) provided herein is intended solely to better illustrate the embodiments, rather than to limit the scope of the embodiments. Any language in the specification should not be interpreted as indicating any unclaimed element as the essence of the embodiments.

[0071] In the following description, it should be understood that terms such as "first," "second," "top," "bottom," "upper," "lower," etc. are words of convenience and should not be construed as limiting unless specifically stated to the contrary. For example, the following description identifies a "first filler," "second filler," "third filler," etc., where "first," "second," "third," etc. are to be understood. The names are used for ease of identification and potential distinction from one another (e.g., when provided in the same racket), and—unless expressly stated to the contrary or clear from the context—these terms are not limiting and do not have other meanings, such as order of addition or the like. Furthermore, any filler described herein may be replaced with another filler unless expressly stated to the contrary or clear from the context.

[0072] In general, the devices, systems, kits, and methods disclosed herein relate to a racket, such as a pickleball racket, having one or more gaps formed in its core portion that can accommodate one or more fillers, for example, to provide vibration damping and / or otherwise affect performance, comfort, and enjoyment. It should be understood that while the present disclosure may emphasize the teachings of pickleball in the context, the present teachings can be applied and practiced in other sports and activities, including but not limited to one or more of tennis, badminton, squash, racquetball, table tennis, etc. Therefore, it should be understood that unless expressly stated to the contrary or otherwise clear from the context, the teachings of the present invention are intended to include similar implements in other sports / activities in addition to or in place of pickleball.

[0073] Rackets can be used to play games such as pickleball, racquetball, and handball. Rackets can be solid, meaning they are not made of strings with holes between them (like a tennis racket). Rackets can also have some foam (or other padding) and other materials on the inside, such as the core; the padding can add strength, soften the feel, and reduce vibration.

[0074] In one exemplary embodiment, a racquet can be made using the following manufacturing process. This process can begin with a raw racquet. The racquet has a front and back face, with a core inside, forming a "sandwich structure." The front and back surfaces can be made of any material, such as one, two, three, four, or more layers of unidirectional material or fabrics composed of carbon fiber, fiberglass, and / or any natural or synthetic fibers, as well as prepregs impregnated with any type of resin. The core can be composed of any open-cell structure and / or mesh (e.g., honeycomb), such as polypropylene, aluminum, NOMEX, KEVLAR, or another aramid, and / or any other synthetic or natural material.

[0075] The process can then hollow out (remove) a portion of the core. The portion of the core that is removed (the gap) can depend on the embodiment. For example, in different embodiments, different portions of the core can be hollowed out. The gap depth can range from 0.1 mm to 100 mm (from the edge to the center of the racket). The process can then fill the hollowed-out portion (gap) of the core with a first filler (e.g., foam). In one example, the hollowed-out portion (gap) can be hollow instead of the first filler.

[0076] The process may then insert a first filler (e.g., foam) into the gap. Note that the first filler may be a single material or a combination of at least two different materials. The process may then wrap a frame (e.g., a carbon frame) around the entire perimeter of the racket. In one example, the frame may be an airtight hollow cubic structure with a second filler (e.g., foam) inside the frame. Note that in one example, the frame may not be airtight. The second filler may be made of a single material or a combination of at least two different materials. In another example, the frame may simply be a solid material wrapped around the perimeter. The second filler may be the same material as the first filler, or a different material. In one example, the frame may be hollow. Note that the frame aspect ratio may be defined as the height of the frame divided by the width of the frame, and in one example, the frame aspect ratio will be less than a predefined number (e.g., 4).

[0077] Figure 1A 1 is a front view illustrating a racket 100 according to an example. The front view and the rear view may be the same. Figure 1Bis a top perspective view showing a racket according to an example. Figure 1C 1 is a perspective view of the back of a racket according to an example. Racket 100 can be used to make an improved racket as described herein. Note that any racket described herein is not limited to any particular shape and any shape and / or thickness can be used. The front surface 101 and the back surface 102 can be made of any material, such as one, two, three, four or more layers of unidirectional material or a fabric composed of carbon fiber, glass fiber and / or any natural or synthetic fiber, as well as prepregs impregnated with any type of resin. Typically, the front surface 101 and the back surface 102 are made of the same material, however this is not required. The handle 105 is located at the bottom of the racket 100, and the head 110 is located above the handle 105. Example dimensions of such a racket are as follows: 15-17 inches (38.10-43.18 cm) long, 7-9 inches (17.78-22.86 cm) wide, or 16.5 inches (41.91 cm) x 7.5 inches (19.05 cm) or 16 inches (40.64 cm) x 8 inches (20.32 cm). The grip length can be: 4-6 inches (10.16-15.24 cm), or 4.75-5.75 inches (12.065-14.605 cm). The grip circumference can be: 4-4.5 inches (10.16-11.43 cm), or 4-4.3 inches (10.160-10.922 cm). It will be understood that the aforementioned dimensions are merely examples, and any other dimensions may be used.

[0078] Note that the handle 105 can be defined as the bottom of the racket up to the point where the curvature of the outer edge of the racket (without grip glue) begins to change (e.g., a straight line begins to bend). This point is Figure 1A The face of the racket can be considered to be the rest of the racket, that is, from the handle to the top of the racket. The face can be divided into two parts, the head 110 and the throat 103. The head 110 can be seen from the top of the racket down to where the outer edge begins to curve (from a straight edge), which is in the Figure 1A The throat 103 may be the area between the head and the handle. Thus, the face of the racket may include only the head 110 and the throat 103, without including the handle 105. The height of the face is represented by Figure 1A The dotted line "F" in the figure indicates that Figure 1A In FIG, all parts (e.g., head, throat, handle) are depicted with horizontal lines. These parts can be considered to extend throughout the entire thickness of the racket.

[0079] Another method of determining the cross-section of the head and throat is as follows. The height of the face can be determined by measuring the distance from the top of the racket to the beginning of the handle (this can be determined based on when the curvature straightens, or by using different handle materials, etc.). The bottom third of this height (e.g., the bottom third of the face) can be the throat, and the top two-thirds of this height (e.g., the top two-thirds of the face) can be the head. As an example of this method, suppose that at Figure 1A The height of the mid-face (represented by the vertical line F) from the top of the racquet to the top of the handle is 10 inches (25.4 cm). The aforementioned 10 inches does not include the handle. The throat cutoff (represented by the horizontal line T) is then exactly in the lower third of the face height, that is, 3.33 inches (8.4582 cm) above the top of the handle is the throat (or 6.66 inches (16.9164 cm) below the top of the racquet). The area below the throat cutoff and above the handle can be the throat area. Although Figure 1A Drawn in two dimensions, but the areas depicted here may extend into the thickness of the racket.

[0080] Figure 2 A diagonal view of a racket according to an example is shown after it has been hollowed out. A core 200 may reside between the front face 101 and the back face 102. The core 200 may be comprised of any open-cell structure (or a plastic sheet that closes these cells), a mesh (e.g., honeycomb), and / or any other such structure, including polypropylene, aluminum, NOMEX, KEVLAR, or any other synthetic or natural material. "Hollowing out" may include removing portions of the core 200 from the racket 100. This may be accomplished by using a drill or other tool that creates a gap 202 where the core 200 previously existed. See operation 3102 and its accompanying description for more information regarding an exemplary core hollowing operation.

[0081] Figure 3 Based on an example Figure 2 A cross-section of the top surface 101 and the bottom surface 102 is formed by a gap 202. The depth of the gap 202 can range from 0.1 to 100 mm (from the edge to the center of the racket). It can be continuous around the entire racket or divided into two, three, four, or more sections of varying lengths, depths, and shapes. The height of the gap can vary from 0.1 to 25 mm, or up to the maximum thickness of the core. The gap can be any shape, concave, convex, U-shaped, or otherwise.

[0082] Figure 431 is a diagonal view of a racket with foam added according to an example. A first filler 400 can be added to gap 202, however, it may not completely fill gap 202 because it may leave room for a frame (e.g., a carbon frame). First filler 400 can be a mixture of ethylene vinyl acetate (EVA) foam, a polymer, a thermoplastic, a thermosetting plastic, a thermoplastic elastomer, an elastomer, a rubber, a foam, an expandable material, or any combination of these materials. First filler 400 can have any density, viscosity, and hardness. See operation 3103 and its accompanying description for more information on how to apply the filler.

[0083] The first filler 400 (and the gap 202 it fills) can be of any cross-sectional shape; the height can vary from 0.1 to 25 mm, or up to the maximum thickness of the core; and the width (the distance from the frame wall to the core) can vary from 0.1 to 50 mm. The first filler 400 can be continuous around the entire core, or divided into two, three, or more sections having the same or different geometries, sizes, and materials. The first filler 400 can surround the entire racket, only the head, or only specific areas.

[0084] Figure 5 Based on an example Figure 4 A first filler 400 is shown within the gap 202 .

[0085] Figure 6A 31 is a diagonal view of a racket with a frame (e.g., a carbon frame) added according to one example. A frame 600 can be added around the edges of racket 100. Frame 600 can be made of carbon, glass, and / or any synthetic or natural fiber in combination with resin, plastic, rubber, metal, and / or any material that provides a rigid structure. Frame 600 can be of any cross-sectional shape, height, width, and length. It can be a single piece or divided into two, three, or more parts having the same or different geometric shapes and dimensions. Frame 600 can surround the entire racket, just the head, just the handle, or just specific areas. For more information on how to apply a frame, see operation 3104 and its accompanying description. Optionally, edge guards (not shown) can be used (or not) to cover the frame and small areas of the two side surfaces.

[0086] Figure 6B Based on an example Figure 6Across-section. The frame 600 can be a hollow cubic (or other) structure that accommodates the second filler 605. The second filler 605 can be a mixture of a polymer, a thermoplastic, a thermosetting plastic, a thermoplastic elastomer, an elastomer, a rubber, a foam, an expandable material, or any combination of these materials. The second filler 605 can have any density, viscosity, and hardness, and can be a single material or a combination of different materials. The second filler 605 can be the same material as the first filler 400, or a different material. In some embodiments, the second filler 605 can also be pressurized air (high pressure) because the frame 600 can be airtight or can be hollow. The core 200 is also shown. When the frame is a shell structure as shown, the frame wall can range from 0.01-10 mm, 0.1-10 mm, 0.1-4 mm, or other ranges. The frame height can be 1-20 mm or the maximum thickness of the racket. The frame width can be 1-30 mm or 5-15 mm, and the frame can also be a solid structure (not a shell structure); in this case, the size examples may be the same, but there is no wall thickness in this case.

[0087] Figure 7A A front view of a racket with a frame installed is shown according to an example. Figure 7B A rear view of a racket with a frame installed is shown according to one example. Figure 7A and 7B The racket shown may be the final racket after the manufacturing process is complete. The first filler 400 and the second filler 605 may not be visible to the user because they are inside the racket. Therefore, the final racket may look like Figure 7A and Figure 7B , because the internal structures (e.g., the core, the first filling, the second filling, etc.) may not be visible. However, in other exemplary embodiments, one or more of these internal structures may be visible.

[0088] Figure 7C A side view of a racquet according to an example is shown. Figure 7D According to an example Figure 7C The cross section shown shows a frame 600 with a second filler 605 located within the frame 600. The first filler 400 may be present within the core 200, filling the gap 202 previously formed in the core 200.

[0089] Figure 7EA front view of a racket according to an example is shown. The final rear view of the racket may be the same as the front view. Note that the frame may surround the entire racket. In an example, the frame does not surround the entire racket, but only a portion of the racket; for example, the frame may surround only a portion of the racket head, or only a portion of the handle, etc. According to an example, Figure 7F Shown Figure 7E According to one example, Figure 7G Shown Figure 7E The cross section of section 7G-7G is shown in FIG. Note that Figure 7G There may be no first filler 400 (eg Figure 7F shown), because Figure 7G The racket portion shown in may not be hollowed out, so no first filler 400 is applied to this area. According to one example, Figure 7H Shown Figure 7F Detailed view of the area circled in . Note that Figure 7H The height and width of the frame are shown. The frame aspect ratio is height / width. In one example, the frame aspect ratio can be less than 4 (or less than or equal to 4). In another example, the frame aspect ratio can be less than 6, or less than 4, or less than 2, or other numbers. According to one example, Figure 7I Shown Figure 7G Detailed view of the circled area.

[0090] Figure 8-13 , are front views of rackets according to various examples. Note that the rear view of each racket may be the same as the respective front view. All other structures not shown may be the same or similar to those described herein. In each of these figures, a first filler is shown, which may be internal to the corresponding racket and may not be visible to the user. As described herein, the portion showing the first filler may have been hollowed out (a gap) before the first filler is added. All of these examples may also have a frame applied around the entire edge (e.g., with a second filler within the frame). Thus, Figure 8-13 The embodiments shown in can be constructed using the processes described herein and can have Figure 2-7I The same general structure as shown in , but with a different location and shape of the gap, which is hollowed out from the original racket and filled with the first filler. Note that other configurations of the core and first filler can also be used and these are just examples. Note that in Figure 8-13 In the embodiment of the present invention, the first filler and the second filler may not be visible to the user because they may be embedded inside the racket (for example, the first filler is inside the gap and the second filler is inside the frame). Figure 8-13 The racket shown can be Figure 7Aand Figure 7B As shown, any internal structure (eg, first filling 400 , second filling 605 , core 200 , etc.) may not be visible as it will be covered by the front and back faces and possibly the frame 600 .

[0091] exist Figure 7D and Figure 8-13 In the example shown, the gap and the filler for filling it can be located near the outer edge of the racket head (the head is opposite the handle). In another example, the gap and the filler for filling it can be located elsewhere in the racket (not just near the outer edge), but generally closer to the handle than the head. Figure 14-18 A number of examples of rackets are shown in which gaps and fillers for filling the gaps are present at different locations within the racket. Note that the construction process can be the same as that shown in Figures 1-13.

[0092] Figure 14 is a front view showing a racket before being hollowed out according to an example. Figure 15-19 The process of how a vibration damper is applied to a racket is shown. Note that the core can be present throughout the racket (as shown in the other figures) and can be surrounded by a front surface and a back surface. The outer surface can be composed of one, two, three, four or more layers of unidirectional or woven carbon, glass and / or any natural or synthetic fiber and prepreg impregnated with any kind of resin. The core 200 can be composed of a honeycomb structure of polypropylene, aluminum, Nomex, Kevlar and / or any other synthetic or natural material. The core is not limited to a honeycomb structure. The core can form the entire racket (racket head and racket handle) or only the racket head. The core can be surrounded by edge guards or any type of frame, or it can be edgeless.

[0093] Figure 15 is a perspective view according to an example, showing Figure 14 Note that the gap 1500 in the core 1400 may be where the core 1400 is drilled (or otherwise processed) to form the gap 1500. Note that the gap 1500 may be near the handle 1501. According to one example, Figure 16 A perspective view of a first filler filling a gap (as described herein) is shown. Gap 1500 (and the first filler) can extend through the entire racquet. Note that gap 1500 can extend through the racquet and outward through opposite sides of the racquet. Although gap 1500 extends through the racquet, the racquet does not break in two because the front and back surfaces hold the racquet together until the first filler is inserted to fill gap 1500. Because the gap is typically smaller than the total thickness of the racquet, some portion of the original core remains, which also helps prevent the racquet from breaking. Figure 19A first filler 1600 is shown extending throughout the racket.

[0094] The gap 1500 can be used to place a vibration damper (e.g., a first filler), but can also be hollow, partially or completely filled. The gap can be of any size, cross-section, shape and in any location, it can be continuous across the racket, or divided into two, three, four or more parts of different lengths, widths and shapes. It can be straight or curved, in the center of the racket and / or along the edges. The gap can be inside the sandwich structure and / or reach / through the front and back. It can be on the head (edge, center, top, bottom), neck and / or handle of the racket. Multiple gaps can be used simultaneously in the same or different parts of the racket. If the gap is located at the edge of the racket, it can be exposed to the outside (at both edges of the racket) or can be covered with a frame, edge guard or any other material or structure.

[0095] The gap 1500 can be filled with a first filler 1600. The first filler can be a foam, a polymer foam, a solid, a liquid, a gel of any type of polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, an expandable material, and any other material or mixtures thereof. The first filler can completely or partially fill the gap 1500. The first filler can directly contact the core structure, or it can be covered / encapsulated by other materials, such as, but not limited to, thermoplastic film or carbon fiber. If the gap 1500 reaches the surface, the first filler 1600 can be exposed on the surface, or it can be covered with fiberglass, carbon fiber, adhesive, or any other material.

[0096] Figure 17 is a perspective view according to an example showing a frame being added to Figure 16 After the gap 1500 is filled with the first filler 1600, a frame 1700 may be added to the edge (outer edge) as described herein. Note that in some examples, a frame may not be added if there is no gap at the edge of the racket. The frame 1700 may have a second filler as described herein. Note that the final racket may be as Figure 7A and 7B shown.

[0097] According to an example, Figure 18 yes Figure 17 1700, showing a cross section of the core, foam and carbon frame. The frame 1700 may include a second filler 1800. According to an example. Figure 19is a perspective view of the front of the racket, showing the first filling inside. First filling 1600 may be within gap 1500, which is cut out inside core 1400. First filling 1600 may not be visible to the user, as it may be completely inside the racket; in other examples, first filling 1600 may be visible to the user.

[0098] Figure 19-22 1 is a diagram showing a diagonal front view of a racket according to various examples. Note that the rear view of each racket may be the same as the respective front view. All other structures not shown may be the same or similar to those described herein. Figure 19-22 The racket shown may be constructed as described herein.

[0099] Figure 19 is an example of a racket showing a horizontal gap (and first filler) across the racket, and this may represent Figure 15-18 The construction shown in . Figure 20 is an example of a racquet showing the horizontal gap (and first filler) on the side of the racquet. Figure 21 is an example of a racket showing a horizontal gap (and first filler) in the center of the racket. The gap (and first filler) is not limited to these examples or horizontal gaps, and other shapes, sizes, and configurations may be used or substituted. Note that in Figure 19-21 In the embodiment of the present invention, the first filler may or may not be completely inside the racket, and thus may or may not be visible to the user. The second filler may also or alternatively be completely inside the racket (inside the frame) and may or may not be visible to the user, or may be visible in some way.

[0100] Note that when the gap and first filler are completely between the head and handle (throat), it can be called a vibration dampener (e.g. Figure 19-21 In other words, the vibration dampener can have no filler portion outside of the throat of the racket (e.g., above the throat line or below the top of the handle). Note that when the gap and first filler are near the outer edge / edge of the racket (e.g., Figure 7D and Figure 8-13 ), then it can affect the properties of the racket, such as increasing the spin and acceleration of the ball when it hits the racket. This may be because, in one example, when the racket hits the ball, the first filling (e.g., foam) within the racket can vibrate slightly, which enhances the participant's feeling when hitting the ball. The vibration dampener can reduce vibrations on the handle. Note that in one example, the vibration dampener can be considered to be a piece of foam located completely inside the throat of the racket. Note that in one example, the use of the frame can be optional. In one example, if the racket includes a vibration dampener, the frame will not be used.

[0101] Note that the ratio of the volume of the first filler to the volume of the core can be relatively large (meaning a relatively large amount of first filler is used in the racket). For example, in a particular racket, the ratio r is equal to the volume of all first fillers divided by the volume of all cores. In one example, the ratio r can be 5%. In another example, r can be from 5% to 75%. In another example, r can be from 25% to 50%. In another example, r can be from 10% to 20%. In one example, an acceptable range for r is from 1% to 30%.

[0102] Note that vibration dampeners (e.g., a padded gap between the head and handle) and padded gaps near the edges can be combined into the same racket, see Figure 8 、 Figure 9 and Figure 22 According to one example, Figure 22 is a perspective view showing the front of another alternative racquet, illustrating the first filler around the outer edge and through the portion between the head and the handle.

[0103] Figure 23 is a perspective view of a racket having a gap cut through the front and back surfaces according to an example. Note that in this embodiment, gap 2300 can be cut through the core, front and back surfaces of the racket.

[0104] According to an example, Figure 24 2 is a perspective view of a racket having a gap cut through the front and back surfaces, the gap having a filler. A first filler 2400 may be inserted into gap 2300. The front and back surfaces may then be coated with an outer coating (although alternatively, they may be visible without any coating / covering), such as a carbon fiber layer, to cover the entire front and back surfaces including the first filler 2400. Thus, after the outer coating is applied, the first filler 2400 may be visible or invisible to the user. Figure 17 、 Figure 19-22 and Figure 24 Can be visually presented as Figure 7A and 7B , for example, with all internal structures (eg core 200 , first filling 400 , second filling 605 , etc.) being covered by the front and back sides and possibly the frame 600 .

[0105] Figure 25 is a left side view of a racket according to an example. Figure 26 is a right side view of a racket according to an example. Figure 27 is a top view of a racket according to an example. Figure 28is a bottom view of a racket according to an example. Note that the complete (finished) racket can appear externally, such as Figure 7A and Figure 7B as well as Figures 25-28 As shown. Note that Figures 25-28 The surface shown may be all of the frame 600, however to show the outline the shading does not match the shading used in the other figures regarding the frame 600.

[0106] According to an example, Figure 29 A perspective view of the frame is shown. The frame shown may be made of carbon or other materials. The frame (before curing / heating) is malleable so it can be bent around the outer edge of the racket. It can be attached to the edge of the racket with glue or other adhesive. Although in Figure 29 An open face is shown in FIG, but the face may be closed (sealed) at both ends, thereby forming an airtight frame into which pressurized air or other materials may be sealed.

[0107] Figure 30 is a diagram of a racket according to an example. The racket can have optional grip glue 3000, optional end caps 3001, and optional edge guards 3002. The edge guards may or may not be used to cover the frame and a small area of ​​the two side surfaces. The edge guards may be made of polyvinyl chloride (PVC), any type of polymer, thermoplastic, thermoset, elastomer, rubber, foam, expandable material, or a mixture of these materials. Example dimensions of such a racket can be any of the dimensions described herein, although these are merely examples and any other dimensions may be used. When determining the location / dimensions of the head, throat, handle, face, etc., the edge guards, end caps, and grip glue may not be used.

[0108] Figure 31 is a flow chart illustrating a method 3100 for constructing a racquet according to an example. The method 3100 (and its individual operations) can be used to construct any of the racquets described or illustrated herein.

[0109] In operation 3101, a racquet can be constructed or equipped. The racquet can be constructed starting with a core, which can be constructed of any open cell structure or mesh of polypropylene, aluminum, Nomex, Kevlar, or any other synthetic or natural material. The outer surfaces (e.g., the front and back surfaces) can be constructed of any material, such as one, two, three, four, or more layers of unidirectional or woven carbon, glass, or any natural or synthetic fiber, and prepreg impregnated with any type of resin typically used for outer surfaces. The front and back surfaces can be bonded to the core, forming a "sandwich" consisting of the core between the front and back surfaces. See Figure 1A, 1B, 1C of the original racket. Note that in one example, the front and back surfaces can be glued to the core after it is hollowed out, allowing for easier access to the core.

[0110] From operation 3101, the method may proceed to operation 3102, in which portions of the core are hollowed out (removed) to create a gap. This may be accomplished using a tool such as a router, bow drill, press, saw, or any other mechanical tool. Coring may be performed by the edge of the racket (see Figure 2 ). In embodiments where the gap is not intended to contact the edge of the core, the hollowing out of the core can be performed before assembling the sandwich structure (e.g., before attaching the front and back surfaces to the core). This method of hollowing out can be performed even if the gap does touch the edge of the core. The depth of the gap can be 0.1 to 100 mm (from the edge to the center of the racket), and it can be continuous around the entire racket, or divided into two, three, four or more parts of different lengths, depths and shapes. The height of the gap can vary from 0.1 to 25 mm, or to the maximum thickness of the core. The gap can be any shape, concave, convex, U-shaped or other. Shapes can also be formed into the core when the core is attached to the edge.

[0111] The method proceeds from operation 3102 to operation 3103, where a filler (first filler) is placed (inserted) into the gap. The filler can be pressurized (e.g., in a can) and sprayed, or can be spread within the gap using a tool (e.g., a coating gun such as a foam dispensing gun). The gap can be completely filled with the first filler, or some gap can still remain. In one example, the first filler can be cut into the precise shape of the gap and added by hand. The first filler can be empty space (or compressed air, and the frame can be airtight), or filled with any type of polymer, thermoplastic, thermosetting plastic, thermoplastic elastomer, elastomer, rubber, foam, polymer foam, expandable material, or a mixture thereof. The first filler material can be expandable, for example, if the first filler material is foam, it can be expandable foam. The first filler can be of any cross-sectional shape, with a height varying from 1 to 25 mm, or to the maximum thickness of the core, and a width (the distance from the frame wall to the core) varying from 0.1 to 50 mm. Depending on the geometry and shape of the gap, the first filling can be continuous around the entire core, or can be divided into two, three or more parts with the same or different geometry, size and material. The first filling can surround the entire racket, only around the head, or only around specific areas.

[0112] The method proceeds from operation 3103 to operation 3104, where a frame is added to the rim of the racket. The frame can be a hollow rectangular parallelepiped structure (or other structure that does not necessarily need to be hollow) that wraps around the entire rim of the racket. The frame can be flexible so that it can be molded to the shape of the racket's rim. An adhesive (e.g., glue, adhesive) can be used to adhere the frame to the racket. The frame (e.g., a carbon frame) can be flexible before the heating operation, but after heating, the resin solidifies and the frame becomes rigid. The frame can be attached to the racket via the resin in the carbon fiber, which may not change its shape due to the rigidity. The frame can be made of carbon, glass, fiberglass, thermoplastic, or any synthetic or natural fiber combined with resin, plastic, rubber, metal, or any material that provides structural rigidity. To create the carbon frame, a sheet of carbon fiber prepreg (impregnated with a thermosetting resin) can be rolled to form a tubular structure. Within the tube can be a piece (e.g., continuous and long, approximately the same length as the tube) of a second filler (e.g., expandable foam). The frame can be of any cross-sectional shape, height, width, and length. It can be a single piece or divided into two, three, or more parts with the same or different geometric shapes and dimensions. The frame can surround the entire racket, just the head, just the handle, or just specific areas.

[0113] The frame can be hollow or filled with a filler (e.g., a second filler). The second filler can be any polymer, thermoplastic, thermosetting plastic, thermoplastic elastomer, elastomer, rubber, foam, polymer foam, expandable material, or a mixture thereof. The second filler can have any density, viscosity, and hardness. A variety of alternative methods (except those described herein) can be used to insert the second filler into the frame, such as blowing the second filler into the interior, injecting it into the interior, pressurizing the second filler, and then injecting it into the interior of the frame, etc. The second filler (e.g., expandable foam) can be inserted into the carbon frame by hand, and it is a solid block before the hot molding process. The second filler can be air, and the frame can be airtight.

[0114] The method proceeds from operation 3104 to operation 3105, where the racket is heated. Once the first filler has been added to the racket (within the gaps in the core), the frame has been added to surround the racket, and the second filler has been added to the interior of the frame, with the front and back surfaces attached (e.g., glued) to the core, the racket can be placed inside a mold. The frame can be bent around the edges (outer rims) of the racket. The racket can then be heated in a mold that matches the shape of the racket. The mold is closed with high pressure inside, and the temperature inside the mold is raised to approximately 100 degrees Celsius or higher for 2-20 minutes or longer. Under the high temperature, the second filler within the frame may expand, thereby shaping the frame. The first filler within the gaps may also expand therein. If expandable foam (e.g., a polymer with a blowing agent) is used for the first and / or second filler, the expandable foam will expand and harden when heated. Furthermore, under the high temperature, the resin impregnated in the frame may solidify (harden), resulting in a solid piece after the mold is opened.

[0115] Note that all features, embodiments, methods, steps, etc., can be applied to any other embodiment described herein. Furthermore, all features, embodiments, methods, steps, etc., can be combined with any other embodiment without restriction. Furthermore, all rackets described herein can be symmetrical (unless otherwise noted), meaning that the back / back surface can be identical to the front / front surface. For any side or portion of any racket not shown or described in the drawings / description, that side or portion can be identical (symmetrical) to the corresponding side or portion that is shown (or identical / symmetrical to other rackets shown herein). For example, if the left side of a racket is shown, and the right side of the racket is not shown or described, it can be assumed that the appearance and structure of the right side are the same as the left side. If the bottom of a racket is not shown, it can be assumed that the bottom of that racket is the same as the bottom of another racket shown herein. Thus, the components and structures described herein can be combined and intermixed without restriction. This also applies to the front and back surfaces, etc. Any part mentioned or shown can be made of any suitable material, including any material mentioned herein.

[0116] In certain aspects of the present teachings, a pickleball racket may include: a front surface; a back surface opposite the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of the core; a first filler disposed within at least a portion of the gap; a frame disposed around at least the head of the pickleball racket along an edge portion of the pickleball racket, the frame being at least partially disposed along the edge portion between the front surface and the back surface, the frame defining a hollow interior portion; and a second filler disposed within at least a portion of the hollow interior portion of the frame.

[0117] Embodiments may include one or more of the following. One or more of the first filler and the second filler may include a foam material. One or more of the first filler and the second filler may include at least one of a polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, and an expandable material. One or more of the first filler and the second filler may include pressurized air. The second filler and the first filler may be the same material. The second filler and the first filler may be different materials. A gap may be at least partially disposed between the frame and the core. The gap may be adjacent to the frame. The frame may surround the entire pickleball racket. The frame may include carbon fiber. The frame may be a hollow cubic structure. The hollow cubic structure may be formed from a single piece of material. The core may at least partially include a honeycomb structure. The racket may also include a rim guard that covers at least a portion of the frame along at least a portion of the head of the racket.

[0118] In certain aspects of the present teachings, a pickleball racket may include: a front surface; a back surface opposite the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of the core along a throat of the pickleball racket; and a first filler disposed within at least a portion of the gap. The first filler may include a material structurally configured to absorb vibrations caused by striking a ball with one or more of the front and back surfaces of the pickleball racket. The pickleball racket may also include a frame disposed around at least the head of the pickleball racket along an edge portion of the pickleball racket, the frame being at least partially disposed along the edge portion between the front and back surfaces, the frame defining a hollow interior portion that may be filled with a second filler.

[0119] In certain aspects of the present teachings, a method of making a pickleball racket may include: forming a core of a pickleball racket having a head and a handle; forming one or more gaps in the core of the pickleball racket; inserting a first filler into at least a portion of the one or more gaps; wrapping a frame around an outer edge of the core; and attaching a front surface and a back surface to the core wrapped by the frame. The frame may define a hollow interior portion. The method may also include inserting a second filler into at least a portion of the hollow interior portion of the frame.

[0120] The present invention may include pickleball rackets and the like having gaps provided on each side of the racket near its throat into which filler is inserted. Such filler may be visible within such gaps, for example, where the edge guard includes voids and / or windows for viewing the filler and / or associated features, markings, colors, or the like. These markings may, for example, provide information about various properties of the racket, filler material, and / or core. A racket according to the present teachings may have a frame (e.g., a frame that accommodates one or more gaps) or may be frameless. In some aspects, as described herein, the frame may also or alternatively include filler disposed therein and / or adjacent thereto.

[0121] The racket designs described herein can allow for customization of various racket characteristics, potentially leading to improved performance and user experience. For example, the use of filler material within the gaps in the core (or the presence of gaps with or without filler material) can allow for adjustment of weight distribution, vibration damping, and / or other performance characteristics. Additionally, potential inclusions in the frame and edge guards can contribute to the racket's structural integrity and durability.

[0122] It should be understood that one or more fillers described herein, for example with reference to any of the figures described herein, may include any features, characteristics, materials, material properties, etc., of any one or more other fillers described herein. For example, any one of the one or more fillers (e.g., the first filler, the second filler, the third filler, and the fourth filler) may include any one or more of the following, or any combination thereof: a foam, a polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, an expandable material, a gas (e.g., pressurized air), a fluid, etc. Furthermore, one or more fillers may be the same as another filler in the same racket (e.g., the first filler and the second filler may be the same). Alternatively, one or more fillers may be different from another filler in the same racket (e.g., the first filler and the second filler may be different).

[0123] Figure 32 and 33 A representative example of a racket with visible padding is shown. Each racket 3200, 3300 may include a ball striking surface 3201, 3301 (one of the first and second surfaces described herein), a core disposed between the two ball striking surfaces, a gap within the core adjacent to a throat 3204, 3304 of the racket 3200, 3300, and a first padding 3210, 3310 disposed within the gap. Each racket 3200, 3300 may also include a side guard 3220, 3320.

[0124] The ball striking surfaces 3201, 3301 of the rackets 3200, 3300 (or any other rackets described herein) can be textured or otherwise structurally configured to enhance control and / or strike during play. For example, the textured surface can increase friction between the racket 3200, 3300 and the ball, potentially allowing for more precise strikes or improved spin and / or control.

[0125] exist Figure 32 and 33 The gaps shown filled with the first filler 3210, 3310 can be formed at or near the throat of the racket 3200, 3300, for example, where the head transitions into the handle. Other gaps are possible or alternative, such as any of the gaps described herein or shown in the accompanying figures. In some aspects, the gaps and / or fillers provided therein are visible to the user in the finished racket. Visible gaps and / or fillers can serve functional and / or aesthetic purposes. In some aspects, the filler material can be colored or otherwise marked, for example, to provide a contrast with other components of the racket 3200, 3300. The color and / or marking of the filler material can be selected based on aesthetic considerations. Additionally or alternatively, the color and / or marking of the filler material can be used to indicate certain attributes of the racket 3200, 3300, such as the intended user, weight and / or weight distribution, flexibility or other similar attributes, material properties (of one or more components or features of the racket, including internal and / or external components or features), performance characteristics, construction, model, and / or brand.

[0126] In this manner, the padding and / or other internal structures, materials, etc., contained within the racket 3200, 3300 may include one or more indicia therein or thereon. For example, the first padding 3210, 3310 may include one or more indicia. In some embodiments, the indicia indicates a property of one or more of the racket 3200, 3300, the padding, the core, etc. In some embodiments, the indicia includes the color of the internal component, such as the color of the first padding 3210, 3310. Additionally or alternatively, the one or more indicia may include textures, alphanumeric characters, symbols, trademarks and / or logos, scannable codes (e.g., QR codes) or the like, identifying markings (e.g., model numbers), color codes, artistic markings, engravings or inscriptions, patterns, labels and / or signs, combinations thereof, and the like.

[0127] The edge guards 3220, 3320 can be similar to any edge guards described herein or known in the art. Furthermore, the edge guards 3220, 3320 can include voids 3222, 3322 (and / or windows) to provide visibility and / or visual indication of the internal structure of the racket 3200, 3300. This visibility can be achieved by forming voids 3222, 3322 and / or windows in the edge guards 3220, 3320, for example, aligned with gaps in the core. That is, in some aspects, the rackets 3200, 3300 described herein include edge guards 3220, 3320 disposed along the outer edge of the head of the racket 3200, 3300. The edge guards 3220, 3320 may define voids 3222, 3322 that are adjacent to one or more gaps in the racket 3200, 3300, such as each of a first gap and a second gap disposed at or near the throat 3204, 3304 of the racket 3200, 3300. For example, Figure 32 As shown, the gap 3222 can be formed by a cut in the material of the edge guard 3220. Also, in some aspects, such as Figure 32 As shown, the first filler 3210 can be displayed to the outside environment through the cutout in the edge guard 3220. Alternatively, as shown Figure 33 As shown, void 3322 may include at least a translucent material (e.g., completely transparent, dyed, painted, etc.) through which first filler 3310 is visible. That is, a window may be formed in void 3322 using a transparent material or the like, such that first filler 3310 is visible through the window and / or void 3322. The window may be formed by one or both of the following means: a cover covering void 3322 (e.g., at the top of void 3322) and / or by inserting at least a translucent material into void 3322.

[0128] Figure 34 A side view 3400a and a cross-sectional view 3400b of a racket 3400 according to a representative example are shown. The racket 3400 may include a first surface 3401 and a second surface 3402 opposite the first surface 3401. A core 3406 may be disposed between the first surface 3401 and the second surface 3402. The core 3406 may be made of a first material, such as polypropylene, aluminum, NOMEX, KEVLAR or another aromatic polyamide, and / or any other synthetic and / or natural material. In general, the core 3406 may be any core described herein, such as a solid core and / or a core including a honeycomb structure and / or an open cell structure and / or a mesh structure. It should be understood that Figure 34 The racket 3400 shown in FIG can include any one or more of the features described above, for example, with reference to FIGs. 1-33.

[0129] The racket 3400 can include at least two gaps in the core 3406, such as a first gap 3408a and a second gap 3408b. These gaps can be defined by the absence of material from the core 3406. In some aspects, the first gap 3408a can be located on a first side of the racket 3400, generally adjacent to its throat 3404, while the second gap 3408b can be located on a second side of the racket 3400, generally adjacent to the throat 3404. The first gap 3408a and the second gap 3408b can have similar sizes and / or shapes, or they can be different.

[0130] The first filler 3410 may be disposed within one or more of the first gap 3408a and the second gap 3408b (e.g., the first filler 3410 may be disposed within each of the first gap 3408a and the second gap 3408b). In some aspects, the first filler 3410 within each of the first gap 3408a and the second gap 3408b is substantially identical. The first filler 3410 may penetrate at least 5 mm of one or more of the first gap 3408a and the second gap 3408b. For example, the first gap 3408a and the second gap 3408b may extend inward from the outer edge of the racket 3400 by at least 5 mm. The first filler 3410 may fill the entire extent of one or more of the first gap 3408a and the second gap 3408b, or the first filler 3410 may penetrate at least 5 mm of one or more of the first gap 3408a and the second gap 3408b, leaving the remaining portion of the corresponding gap empty. In still other aspects, the filler within each of the first gap 3408a and the second gap 3408b is different, eg, having different material properties and / or aesthetic appearance.

[0131] In some embodiments, one or more other fillers may be present in other gaps within core 3406, which may be the same as or different from first filler 3410. For example, second filler 3412 and / or third filler 3432 may also be present or may replace first filler 3410. The filler may be any filler described herein, including, but not limited to, one or more foams (e.g., ethylene vinyl acetate (EVA) foam), polymers, thermoplastics, thermosets, thermoplastic elastomers, elastomers, rubbers, expandable materials, fluids (e.g., compressed air and / or another gas such as an inert gas), and the like. In some aspects, second filler 3412 is the same as first filler 3410; in other aspects, second filler 3412 is different from first filler 3410. Similarly, in some aspects, third filler 3432 is the same as first filler 3410; in other aspects, third filler 3432 is different from first filler 3410.

[0132] Racket 3400 may also include a frame 3430 disposed between first surface 3401 and second surface 3402. In some aspects, frame 3430 may be disposed generally along or adjacent to an outer edge of the head of racket 3400. In some aspects, frame 3430 is solid; in other aspects, frame 3430 is hollow and / or includes one or more hollow portions. Frame 3430 may define an interior including third padding 3432, which may be any of the padding described herein, including foam, compressed air, or another inert gas. In some cases, third padding 3432 may surround the core 3406 of racket 3400, and a portion of frame 3430 and / or second padding 3412 may be located between third padding 3432 and core 3406.

[0133] As described herein and shown in the figures, the frame 3430 can accommodate one or more gaps in the racket 3400, such as the first gap 3408a and the second gap 3408b. For example, in some embodiments, the frame 3430 can include one or more recessed portions 3434 that accommodate the first gap 3408a and the second gap 3408b, and / or other gaps provided within the racket 3400. For example, the frame 3430 can include one or more recessed portions 3434 in the throat region of the racket 3400, wherein the frame can extend continuously around the outer edge of the head region of the racket and can be offset inwardly from the outer edge of the racket in the recessed portions. Alternatively, there can be no frame 3430 along the first gap 3408a and the second gap 3408b (see, e.g., FIG. 2 ). Figure 37 ), or it can be formed as a boundary of each of the first gap 3408a and the second gap 3408b along an interior portion of the racket 3400.

[0134] The racket 3400 may include a gap formed in the core 3406 adjacent the frame 3430 along an interior portion of the racket 3400. The gap may extend, for example, along a majority of a first side of the head, along a top of the head, and along a majority of a second side of the head. Figure 34 As shown, second filler 3412 (or another filler) can be present in all or a portion of the gap. In some aspects, filler can be used to bond or otherwise attach different interior portions of racket 3400. For example, second filler 3412 can be used to form a bond between core 3406 and frame 3430.

[0135] The edge guard can be provided along the outer edge of the head of the racket 3400. The edge guard can define a void 3422 adjacent to each of the first gap 3408a and the second gap 3408b through which the first filler 3410 can be seen.

[0136] It should be understood that a variety of gaps of different shapes and sizes may be present within the racquets described herein, wherein one or more fillers (the same or different fillers) may be present within all or a portion of these gaps. Figure 34 An exemplary cross section of a racket according to the present invention is shown, and the following Figures 35-37 Another exemplary cross-section of a racket according to the present invention is shown, wherein it should be understood that different examples are possible or alternative without departing from the scope of the present disclosure.

[0137] Figure 35 A cross-sectional view of a racket head according to a representative example is shown. Racket 3500 may include a core 3506 disposed between a first surface and a second surface. In some aspects, core 3506 may define a plurality of gaps, including a first gap 3508a, a second gap 3508b, a third gap 3508c, and a fourth gap 3508d. One or more of these gaps may (completely or partially) contain one or more fillers, such as any filler described herein, wherein different gaps may contain the same filler as one another, or different fillers.

[0138] For example, first gap 3508a and second gap 3508b may contain first filler 3510; third gap 3508c may contain second filler 3512 (or in some aspects, it may not contain any filler); and fourth gap 3508d may contain fourth filler 3514. In one aspect, one or more gaps (e.g., third gap 3508c and fourth gap 3508d) may occupy a shared area from which material has been removed from core 3506. In other words, a gap may not be adjacent to core 3506, or may be only partially adjacent to core 3506. One gap may be fully or partially adjacent to another gap. More or fewer gaps with more or less filler may also or alternatively be included in racquet 3500.

[0139] The racket 3500 can also include a frame 3530 disposed along an outer edge of the racket. In some aspects, the frame 3530 can define an interior that includes a third filler 3532. The frame 3530 can be shaped or configured to accommodate one or more of the various gaps and fillers within the racket 3500.

[0140] In this racket 3500 and / or other rackets described herein, the arrangement and construction of the core 3506, gaps, filling, and frame 3530 can allow customization and / or optimization of the racket's performance characteristics, such as weight distribution, vibration dampening, and overall feel during play.

[0141] Figure 36 A cross-sectional view of a racket head according to a representative example is shown. The racket 3600 shown in this figure can be similar to the racket 3500 described above and can include one or more features of the racket 3500 described above, but wherein Figure 36 The racket 3600 does not include the third or fourth gaps as described above. That is, the racket 3600 may include a core 3606 disposed between a first surface and a second surface, a first filler 3610 disposed within at least a portion of one or more gaps in the core 3606, and a frame 3630 disposed along an outer edge of the racket. In some aspects, the frame 3630 may define an interior that includes the third filler 3632.

[0142] Figure 37 A cross-sectional view of a racket head according to a representative example is shown. The racket 3700 shown in this figure can be similar to the rackets described above and can include one or more features of the rackets described above, but wherein Figure 37 The racket 3700 includes a frame 3730 having multiple parts, such as a first part 3736 and a second part 3738.

[0143] In this manner, in some aspects, the frame 3730 can include a missing region 3734, wherein the frame 3730 is missing along portions of the outer edge of the racket. This configuration can allow the core 3706 and / or filler (e.g., the first filler 3710) to be directly exposed to the outer edge of the racket 3700 and / or the external environment.

[0144] Thus, the core 3706 can define one or more gaps, and the first filler 3710 can be disposed within at least a portion of the one or more gaps in the core 3706. The first filler 3710 can extend along portions of the racket's internal structure and / or outer edge, potentially providing targeted vibration damping, weight distribution characteristics, and the like. In some embodiments, a second filler 3712 can also be present within the racket 3700, which can be the same as or different from the first filler 3710. The second filler 3712 can be located at various locations within the core 3706, potentially allowing for further customization of the racket's performance characteristics. Other gaps and fillers may also or alternatively be present.

[0145] Figure 38A shows a first view during formation of a racket 3800 according to a representative example, Figure 38BA second view of the racket 3800 during formation is shown. For example, the racket 3800 can be a frameless racket. The racket 3800 can include a core 3806 disposed between a first surface and a second surface, wherein Figure 38A A cutout 3822 is shown in the core 3806 to form a gap as described herein, wherein the gap may be filled with a first filler 3810, as described herein. Figure 38B In some aspects, cutouts 3822 are formed in the core 3806 of the racket 3800, and then the first and second surfaces are applied before the gaps formed by the cutouts 3822 are filled with a filler. Other manufacturing techniques are also possible or alternative.

[0146] Figure 39 A plurality of rackets according to a representative example are shown. As shown, the racket can include a side guard 3920 disposed along an outer edge of its head. The side guard 3920 can define a void 3922 adjacent to a gap filled with a filler (e.g., a first filler 3910). The void 3922 can allow the first filler 3910 to be directly exposed to the external environment, thereby providing a visual indication of the internal structure or performance characteristics of the racket. The void 3922 can also or alternatively include at least a translucent material (e.g., a transparent filler) and / or a window and / or a covering, allowing for a visual indication of the internal structure or performance characteristics of the racket.

[0147] Figure 39 The racquets shown illustrate how the filling (and / or gaps and / or voids) in different racquets may differ, e.g., in visual appearance, size, shape, material properties, etc. As described herein, different visual appearances may indicate different models, brands, attributes, etc. of different racquets.

[0148] For the purpose of explanation, the foregoing description has been described with reference to specific embodiments. However, the above illustrative discussions are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings.

[0149] Throughout this description, unless the context clearly requires otherwise, the words "comprises," "including," "having," "with," etc. should be construed in an inclusive sense, rather than an exclusive or exhaustive sense; that is, in a sense "including, but not limited to." Additionally, the words "herein," "hereinafter," "above," "below," and words of similar import refer to this application as a whole and not to any particular portions of this application.

[0150] It should be understood that the above-described devices, systems, and methods are set forth by way of example and not limitation. For example, with respect to the methods provided above, in the absence of explicit indications to the contrary, the disclosed steps may be modified, supplemented, omitted, and / or reordered without departing from the scope of the present disclosure. Many variations, additions, omissions, and other modifications will be apparent to those of ordinary skill in the art. Furthermore, the order or presentation of the method steps in the above description and accompanying drawings is not intended to require that such order be performed, unless a particular order is explicitly required or clear from the context.

[0151] The method steps of the embodiments described herein are intended to include any suitable method for causing such method steps to be performed, consistent with the patentability of the claims below, unless a different meaning is expressly provided or clearly indicated from the context. Thus, for example, performing step X includes any suitable method for causing another party, such as a remote user, a remote processing resource (e.g., a server or cloud computer), or a machine, to perform step X. Similarly, performing steps X, Y, and Z may include any method for directing or controlling any combination of such other individuals or resources to perform steps X, Y, and Z to obtain the benefits of such steps. Thus, the method steps of the embodiments described herein are intended to include any suitable method for causing one or more other parties or entities to perform such steps, consistent with the patentability of the appended claims, unless a different meaning is expressly provided or clearly indicated from the context. These parties or entities need not be directed or controlled by any other party or entity, nor need they be located in a particular jurisdiction.

[0152] While particular embodiments have been shown and described, it will be apparent to those skilled in the art that various changes and modifications in form and details may be made without departing from the spirit and scope of the disclosure, and such changes and modifications are intended to form a part of the invention as defined by the appended claims, which are to be interpreted in the broadest sense allowed by law.

Claims

1. A competition racket, characterized in that: The game racket comprises: frontal surface; a back surface, opposite to the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of the core; a first filler disposed in at least a portion of the gap; a frame disposed about at least the head of the game racquet along an edge portion of the game racquet, the frame being disposed at least partially between the front surface and the back surface along the edge portion, the frame defining a hollow interior portion; as well as A second filler is disposed within at least a portion of the hollow interior portion of the frame.

2. The competition racket according to claim 1, characterized in that One or more of the first filler and the second filler includes a foam material.

3. The competition racket according to claim 1, characterized in that One or more of the first filler and the second filler include at least one of the following: a polymer, a thermoplastic, a thermoset material, a thermoplastic elastomer, an elastomer, a rubber, and an expandable material.

4. The competition racket according to claim 1, characterized in that One or more of the first filler and the second filler includes pressurized air.

5. The competition racket according to claim 1, characterized in that The second filler and the first filler are made of the same material.

6. The competition racket according to claim 1, characterized in that The second filler and the first filler are different materials.

7. The competition racket according to claim 1, characterized in that The gap is at least partially provided between the frame and the core.

8. The competition racket according to claim 7, characterized in that The gap is adjacent to the frame.

9. The competition racket according to claim 1, characterized in that The frame surrounds the entire playing racket.

10. The competition racket according to claim 1, characterized in that The frame comprises carbon fiber.

11. The game racket according to claim 1, characterized in that The frame is a hollow cubic structure.

12. A competition racket according to claim 11, characterized in that The hollow cubic structure is formed from a single piece of material.

13. The game racket according to claim 1, characterized in that The core at least partially comprises a honeycomb structure.

14. The game racket according to claim 1, characterized in that The game racquet further includes a rim covering at least a portion of the frame along at least a portion of the head of the game racquet.

15. A competition racket, characterized in that: The game racket comprises: frontal surface; a back surface, opposite to the front surface; a core disposed between the front surface and the back surface; a gap formed in at least a portion of said core along a throat of said game racquet; and A first filler is disposed in at least a portion of the gap.

16. A competition racket according to claim 15, characterized in that The first filler includes a material structurally configured to absorb vibrations caused by striking a ball with one or more of the front surface and the back surface of the game racket.

17. A competition racket according to any one of claims 15 to 16, characterized in that The game racket further comprises a frame arranged along an edge portion of the game racket around at least the head portion of the game racket, the frame being arranged at least partially along the edge portion between the front surface and the back surface, the frame defining a hollow interior portion that can be filled with a second filler.

18. A competition racket, characterized in that: The game racket comprises: a first surface; a second surface; a core disposed between the first surface and the second surface, the core comprising a first material; at least two gaps in the core are defined by an absence of the first material of the core, a first gap of the at least two gaps being disposed on a first side of the racquet generally adjacent a throat of the racquet, and a second gap of the at least two gaps being disposed on a second side of the racquet generally adjacent the throat of the racquet; as well as A first filler is disposed in one or more of the first gap and the second gap.

19. A competition racket according to claim 18, characterized in that The game racket also includes a guard edge disposed along an outer edge of the racket head.

20. A competition racket according to claim 19, characterized in that The edge guard defines a void adjacent to each of the first gap and the second gap.

21. A competition racket according to claim 20, characterized in that The first filler is visible through the gap.

22. A competition racket according to claim 21, characterized in that The void comprises an at least translucent material through which the first filler is visible.

23. A game racket according to claim 21, characterized in that The first filler includes one or more markings.

24. A competition racket according to claim 23, characterized in that The one or more markings are indicative of properties of one or more of the game racquet, the first fill and the core.

25. A game racket according to claim 23, characterized in that The one or more markings include a color of the first filler.

26. A game racket according to claim 23, characterized in that The one or more markings include one or more of a texture and a pattern of the first filler.

27. A game racket according to claim 23, characterized in that The recess is formed by a cutout in the material of the edge guard.

28. A competition racket according to claim 27, characterized in that The first filling is displayed to the external environment through the incision.

29. The game racket according to claim 18, characterized in that The game racket also includes a frame disposed between the first surface and the second surface.

30. A game racket according to claim 29, characterized in that The frame is generally disposed along or adjacent an outer edge of the head of the racket.

31. A game racket according to claim 29, characterized in that The frame accommodates the first gap and the second gap.

32. A competition racket according to claim 31, characterized in that The frame includes one or more recessed portions that accommodate the first gap and the second gap.

33. A game racket according to claim 31, characterized in that The frame is missing along the first gap and the second gap.

34. A game racket according to claim 31, characterized in that The frame is shaped along an interior portion of the racket to bound each of the first gap and the second gap.

35. A game racket according to claim 29, characterized in that The game racquet also includes a gap formed in the core adjacent the frame along an interior portion of the racquet.

36. A game racket according to claim 35, characterized in that The game racket further includes a second filler disposed within the gap.

37. A game racket according to claim 36, characterized in that The second filler is the same as the first filler.

38. A game racket according to claim 36, characterized in that The second filler is different from the first filler.

39. A game racket according to claim 36, characterized in that One or more of the first filler and the second filler include at least one of foam, ethylene vinyl acetate (EVA) foam, a polymer, a thermoplastic, a thermoset, a thermoplastic elastomer, an elastomer, a rubber, an expandable material, and a fluid.

40. A game racket according to claim 29, characterized in that The frame defines an interior that includes a third filler.

41. A game racket according to claim 40, characterized in that The third filler is the same as the first filler.

42. A game racket according to claim 40, characterized in that The game racquet further includes a gap formed in the core adjacent the frame along an interior portion of the racquet, wherein the game racquet further includes a second filler disposed within the gap, and wherein the third filler is different from the second filler.

43. A game racket according to claim 40, characterized in that The third filler includes compressed air.

44. A game racket according to claim 18, characterized in that The first filler is disposed in each of the first gap and the second gap.

45. A game racket according to claim 44, characterized in that The first filler is substantially the same in each of the first gap and the second gap.

46. ​​A game racket according to claim 18, characterized in that The first filler penetrates into one or more of the first gap and the second gap by at least 5 mm.

47. A game racket according to claim 18, characterized in that The first filler includes one or more of foam, ethylene vinyl acetate (EVA) foam, polymer, thermoplastic, thermosetting plastic, thermoplastic elastomer, elastomer, rubber, expandable material and compressed air.

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