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WO/1980/000217A1 |
A tennis racquet or other athletic instrument configured for striking a movable ball or other playing element includes electronic sensors (90, 92, 96, 98) for providing an audible indication of the location on the racquet or instrument a...
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JP7463754B2 |
A tennis racket includes a frame 4 and a grommet 10. The frame 4 includes a grommet groove 22, a small groove 38, and a hole 24. The small groove 38 is recessed from the grommet groove 22. The grommet 10 includes a base 26 and a pipe 28....
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JP7459551B2 |
A badminton racket 2 includes a shaft 4, a frame 6, a grip 8, and a string bed 10. A flexural rigidity value EI(2) of the shaft 4 at a second measurement point located at a distance of 95 mm from the grip 8 is greater than a flexural rig...
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JP2024030936A |
[Problem] To provide a racket frame for soft tennis that has high resilience without increasing the manufacturing effort. A racket frame 1 for soft tennis includes an annular face portion 2, a grip portion 4, and a shaft portion 3. A cro...
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JP2024030937A |
[Problem] To provide a racket frame for badminton that has high resilience without increasing manufacturing effort. A racket frame 1 for badminton includes an annular face portion 2, a grip portion 4, and a shaft portion 3. A cross-secti...
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JP7427339B2 |
The present invention provides a racket and a surface treatment method for a racket that can reduce the air resistance that acts when swinging. The racket (10) includes a racket frame (12) formed by tensioning a string (16) to form a bal...
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JP7424096B2 |
A badminton racket 2 includes a shaft 4, a frame 6, a grip 8, and a string 10. A flexural rigidity value EI(2) of the shaft 4 at a second measurement point located at a distance of 75 mm from the grip 8 is smaller than a flexural rigidit...
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JP7424095B2 |
A badminton racket 2 includes a shaft 4, a frame 6, a grip 8, and a string 10. A flexural rigidity value EI(2) of the shaft 4 at a second measurement point located at a distance of 75 mm from the grip 8 is greater than a flexural rigidit...
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JP7404920B2 |
A badminton racket 2 includes a shaft 4, a frame 6, a grip 8, and a string 10. A flexural rigidity value EI(2) of the shaft 4 at a second measurement point located at a distance of 95 mm from the grip 8 is smaller than a flexural rigidit...
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JP3244863U |
[Problem] It is possible to absorb external force from the shaft when hitting a ball, suppress and reduce the transmitted vibration, and achieve complete release of force when hitting a ball and better control of the rotational direction...
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JP3244780U |
The present invention provides a racket that can reduce air resistance and maintain a high level of mechanical strength. [Solution] A racket includes a shaft 2 and a head 3 connected to one end of the shaft 2, the head 3 having a plurali...
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JP7383091B1 |
The present invention provides a racket frame and a racket in which the repulsion performance of the racket frame can be appropriately designed while having sufficient strength. A racket frame 101 includes a face portion that is annular ...
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JP2023151954A |
To excellently exhibit both control performance and flicking performance so as to soften an impact feeling.A racket (10) includes a frame (15) forming a ball hitting surface due to a stretched string, and a shaft (13) formed between the ...
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JP7353169B2 |
To provide a racket that can be aimed at reducing a load of reading work in identification information and that can maintain a state of integrated identification information.The racket (10) is composed of an annular frame (13), a shaft (...
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JP7326978B2 |
In the determination method according to the present invention, the flexing of a shaft is photographed in a shot made using a standard racket (STEP1). The manner of flexure of the shaft is analyzed on the basis of the photographed image ...
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JP7317095B2 |
A grommet (20) includes a tubular portion (21). The tubular portion extends along a first direction (DR1) and has a distal end (21a) and a proximal end (21b) opposite to the distal end in the first direction. A through hole (21c) that ex...
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JP7286351B2 |
Repulsive-performance upon ball hitting with a racket is enhanced, and good feeling of ball hitting is ensured. A grommet (25-28) includes a cylindrical part (32) which is mounted pierced through a through hole (23) formed in a frame (20...
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JP7286350B2 |
Structures with racket performance varied according to the configurations of cylindrical parts can be easily used. A grommet (25-28) includes a cylindrical part (32) which is mounted pierced through a through hole (23) formed in a frame ...
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JP2023069924A |
To provide a racket which can achieve a high projectile line, even when a ball is hit at a position deviated from a center of a face.A grommet 8 of a racket has a cylindrical part 100a. The cylindrical part 100a has an open hole 24a for ...
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JP2023044826A |
To provide a badminton racket 2 which can suppress variation of a projectile path of a shuttle in both a shot a hit point of which is closer to a bottom and a shot a hit point of which is closer to a top.A badminton racket 2 has a shaft ...
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JP2023044829A |
To provide a badminton racket 2 which can suppress variation of a projectile path of a shuttle in a shot a hit point of which is closer to a bottom.A badminton racket 2 has a shaft 4, a frame 6, and a grip 12. In the racket 2, a ratio (Ï...
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JP2023044828A |
To provide a badminton racket 2 which can suppress variation of a projectile path of a shuttle in a shot a hit point of which is closer to a top.A badminton racket 2 has a shaft 4, a frame 6, and a grip 12. In the racket 2, a ratio (ωo2...
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JP2023044830A |
To provide a specification determination method which can provide a badminton racket suitable for a specific shot.In this method, a specification of a badminton racket having a shaft and a frame is determined. The method includes the ste...
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JP2023044827A |
To provide a badminton racket 2 which can suppress variation of a projectile path of a shuttle in both a shot a hit point of which is closer to a top and a shot a hit point of which is closer to a bottom.A badminton racket 2 has a shaft ...
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JP7247066B2 |
Provided is a badminton racket wherein, when a shaft thereof breaks, separation at the position of the break can be avoided. A racket (10) according to the present invention comprises: a frame (13) that extends in a ring shape; a grip (1...
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JP2023020549A |
To provide a racket 2 that restrains discomfort of a player.The tennis racket 2 comprises a shaft 20, a case 36, and a dynamic damper 38. The dynamic damper 38 is housed in the shaft 20 via the case 36. The dynamic damper 38 comprises a ...
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JP2023016768A |
To provide an impact absorber.An impact absorber 1 is applied to a racket frame having a plurality of punched holes, into which gut can be inserted. The device is disposed between the adjacent punched holes around the racket frame, and i...
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JP2023015286A |
To provide a racket vibration dampener.In a lower hard seat 11, a string 23 is put between two single nails 22 set in gut holes 211 around the frame 21 of a racket 2 and, on the upper end, projection blocks 111 are set which correspond t...
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JP2023009181A |
To provide a racket excellent in spin performance.A tennis racket includes a frame, a grommet attached to the frame, which has a plurality of cylinder parts, and a string forming a face. Each of the cylinder parts includes a through-hole...
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JP2022177436A |
To provide a tennis racket 2 that is suppressed in variation in trajectories due to variation in hitting points.A tennis racket 2 includes a frame 4, a grip 6, an endcap 8, a grommet 10, and a string 12. The frame 4 includes a head 14, t...
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JP7180474B2 |
To provide a racket excellent in spin performance.A tennis racket includes a frame, a grommet attached to the frame, which has a plurality of cylinder parts, and a string forming a face. Each of the cylinder parts includes a through-hole...
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JP7180475B2 |
To provide a racket that can achieve a high trajectory even when a ball is hit at a position deviated from the center of a face.A grommet 8 of a racket includes cylinder parts 100a. The cylinder part 100a includes a through-home 24a for ...
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JP3239886U |
A mounting element having replaceable loops for a handle of a paddle, racquet, etc., and a paddle, racquet, etc., including the same. A fastening element (10) with replaceable loops for a handle such as a paddle, racket or the like compr...
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JP2022173089A |
To provide a racquet capable of improving the durability and reliability of a handle assembly of the racquet, and further inhibiting the dislodging or disconnection of a butt cap from a handle portion of the racquet.A racquet includes a ...
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JP7170687B2 |
A racket frame (100) comprises a face part (1) and a grip part (3) arranged to be aligned in a first direction (A). The face part (1) has: a first part (11) that has a first end part (1a) located on the opposite side to the grip part (3)...
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JP7159551B2 |
Provided is a racket frame on which design change can be easily performed by simple processing. The racket frame includes a head formed in a ring shape along a face. On the head, a gut groove in which a base portion for connecting gromme...
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JP2022149021A |
To provide an ink jet printing method which can secure the smoothness even when a loss occurs.An ink jet printing method for forming an uneven layer 22 by overlapping first printing layer 27 to fourth printing layer 30 with each other by...
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JP2022116540A |
To improve flicking performance at hitting a ball with a racket.Grommets (25-28) are each configured by including a belt-like part (31), and a cylinder part (32) projecting from one surface of the belt-like part. The cylinder part has a ...
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JP2022103634A |
To provide a badminton racket suitable for shots the hit points of which are closer to a center FC.A badminton racket 2 satisfies following equations: y≥x+5.0 (1); y≤x-5.0 (2). The y in the equations (1) and (2) is calculated by a fo...
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JP2022103633A |
To provide a badminton racket 2 by which a variation of trajectories of a shuttle can be suppressed in shots the hit points of which are closer to a top 24 and which involve a cut.A badminton racket 2 has a shaft 4, a grip 10 in which a ...
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JP2022103635A |
To provide a badminton racket which has a hitting point in the vicinity of a center FC and which is suitable for shot with cut.A badminton racket 2 satisfies a numerical expression (1) or (2), the numerical expression (1) is: y≥x+5.0, ...
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JP2022103632A |
To provide a badminton racket 2 by which a variation of trajectories of a shuttle can be suppressed in shots the hit points of which are closer to a top 24.A badminton racket 2 has a shaft 4, a grip 10 in which a portion of the shaft 4 c...
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JP2022103631A |
To provide a badminton racket 2 by which a variation of trajectories of a shuttle can be suppressed in shots the hit points of which are closer to a bottom 26 and which involve a cut.A badminton racket 2 has a shaft 4, a grip 10 in which...
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JP2022103630A |
To provide a badminton racket 2 by which a variation of trajectories of a shuttle can be suppressed in shots the hit points of which are closer to a bottom 26.A badminton racket 2 has a shaft 4, a grip 10 in which a portion of the shaft ...
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JP7085399B2 |
To enhance a degree of freedom in adjusting a weight and a balance point. A racket (10) according to the present invention includes: a frame (13) extending in an annular shape; a grip (11); and a shaft (12) which extends and connects the...
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JP7074549B2 |
The purpose of the present invention is to reduce the diameter of a shaft while maintaining sufficient strength in the shaft. A racket (10) according to the present invention is provided with: a frame (13) extending in an annular shape; ...
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JP7006485B2 |
In a tennis racket 2, longitudinal strings 20 extending in a longitudinal direction and transverse strings 22 extending in a transverse direction intersect each other to form a plurality of meshes 26. At a center, in the transverse direc...
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JP2021194142A |
To provide a racket that can suppress vibration transmitted to a player and excels in rigidity.A tennis racket has a throat 16. The throat 16 has a fiber reinforced layer 34 and a vibration damper 36. The vibration damper 36 is surrounde...
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JPWO2021079476A1 |
(Summary) (Problem) To provide a grip tape which is used by winding around a gripping portion for the purpose of preventing slipping, has excellent designability, is not easily impaired by use, and has excellent gripping force. The grip ...
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JP2021168818A |
To provide a relatively thin racket string having both of good tensile fracture elongation and tensile fracture strength, and a racket having the string.A racket string 1 has: a main thread 10 consisting of a synthetic resin core thread ...
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