Racket
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKohei MIMURA, Yosuke YAMAMOTO
Life of this patent
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AssigneeSumitomo Rubber Industries, Ltd.
InventorsKohei MIMURA, Yosuke YAMAMOTO
Estimating the term…
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.
A racket comprising:
Dependencies are inferred from the claim text.