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公开(公告)号：EP3498344A1
公开(公告)日：2019-06-19
申请号：EP18199995.4
申请日：2018-10-12
发明人： YAMAMOTO, Yosuke
摘要： 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 grommets is to be inserted is formed in a radially outer region of the head so as to be recessed toward a radially inner side, and a deformation promotion groove is formed in the radially outer region of the head so as to be recessed toward the radially inner side.
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公开(公告)号：EP4173679A1
公开(公告)日：2023-05-03
申请号：EP22204170.9
申请日：2022-10-27
发明人： YAMAMOTO, Yosuke
IPC分类号： A63B59/48 , A63B59/50 , A63B102/08 , A63B60/50 , B29C70/12
摘要： Provided is a padel bat 2 having excellent durability and stiffness.
A padel bat 2 has a handle 4 and a head 6. The head 6 has a face fabric 18. The face fabric 18 has a first fiber inclined in a first direction relative to the axial direction of the head 6, and a second fiber inclined in a second direction relative to the axial direction. The head 6 further has a plurality of holes 20. A first array inclined in the first direction relative to the axial direction and a second array inclined in the second direction relative to the axial direction are each formed of the holes 20. A direction of the first fiber and a direction of the first array coincide with each other. A direction of the second fiber and a direction of the second array coincide with each other.-
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公开(公告)号：EP4176941A1
公开(公告)日：2023-05-10
申请号：EP22201524.0
申请日：2022-10-14
发明人： MIMURA, Kohei , YAMAMOTO, Yosuke
IPC分类号： A63B49/022 , A63B102/02
摘要： A grommet of a racket includes a tubular part. The tubular part includes a through hole through which a string is passed. The through hole includes a base opening, a side wall, and a non-circular tip opening. Assuming an imaginary dividing plane that is perpendicular to a face of the racket and that divides the non-circular tip opening into a first opening portion and a second opening portion shorter than the first opening portion in a direction parallel to the face, an inside dimension of the first opening portion in the direction perpendicular to the face increases gradually from one end of the non-circular tip opening in the direction parallel to the face to the dividing plane. In the tubular part, the string passes through the first opening portion and is in contact with the side wall from the base opening to the tip opening.
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公开(公告)号：EP3871742A1
公开(公告)日：2021-09-01
申请号：EP21158488.3
申请日：2021-02-22
发明人： YAMAMOTO, Yosuke
IPC分类号： A63B49/022 , A63B51/00
摘要： A face of a racket includes a plurality of first longitudinal threads 30a, a plurality of second longitudinal threads 30b, and a plurality of transverse threads. The first longitudinal threads 30a and the second longitudinal threads 30b are arranged alternately from a center of the face toward outside in a width direction of the racket. A material of each first longitudinal thread 30a is different from a material of each second longitudinal thread 30b. A tension of the first longitudinal thread 30a may be different from a tension of the second longitudinal thread 30b. Preferably, a ratio (N1/N2) of a number N1 of the first longitudinal threads to a number N2 of the second longitudinal threads is greater than or equal to 2/8, but less than or equal to 8/2.
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公开(公告)号：EP3711824A1
公开(公告)日：2020-09-23
申请号：EP20161239.7
申请日：2020-03-05
发明人： YAMAMOTO, Yosuke , MIMURA, Kohei
IPC分类号： A63B49/022
摘要： A grommet 8 of a racket includes a tubular portion 100a. The tubular portion 100a has a through hole 24a through which a string is passed. The through hole 24a has a base-side opening 26a, a side wall 28a, and a tip-side opening 30a. In the tip-side opening 30a, an inner dimension in a direction parallel to a face is larger than an inner dimension in a direction perpendicular to the face. In the tubular portion 100a, the string is in contact with the side wall 28a from the base-side opening 26a to the tip-side opening 30a.
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公开(公告)号：EP3865191A1
公开(公告)日：2021-08-18
申请号：EP21156229.3
申请日：2021-02-10
发明人： YAMAMOTO, Yosuke , SAKAMOTO, Naoka
IPC分类号： A63B49/022 , A63B49/028 , A63B60/52 , A63B49/02
摘要： 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. In a state where the grommet 10 is attached to the frame 4, the base 26 is accommodated in the grommet groove 22, and the pipe 28 extends through the hole 24. The base 26 is not positioned inside the small groove 38. Therefore, at the back of a back side surface 32 of the base 26, there is a space derived from the small groove 38.
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公开(公告)号：EP3338865A1
公开(公告)日：2018-06-27
申请号：EP17200426.9
申请日：2017-11-07
发明人： YAMAMOTO, Yosuke
摘要： A racket frame has an inner thick part (28) having an outer surface (12), an inner surface (14) and a pair of middle surfaces (16) each positioned between the outer surface (12) and the inner surface (14). A thickness (Ti) of the inner surface (14) is greater than a thickness (To) of the outer surface (12). A thickness of the inner thick part (28) gradually increases toward the inside. Consequently, the middle surface (16) is inclined with respect to an X direction. A distance (Ld) between an outer end and an inner end in a thickness direction of the middle surface (16) is equal to or greater than 0.5 mm.
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