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US 10,561,907 B2Granted
Racket frame
AssigneeSUMlTOMO RUBBER INDUSTRIES, LTD.
InventorYosuke Yamamoto
Life of this patent
Estimating the term…
Abstract
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.
Claims9
A racket frame comprising a head formed in a ring shape along a face, wherein
- on the head,
- a first 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,
- a second groove is formed in the radially outer region of the head so as to be recessed toward the radially inner side, and
- the racket frame is configured in such a manner that when a force toward the radially inner side is applied to a bottom surface of the first groove, the second groove promotes deformation of the head, such that the bottom surface of the first groove shifts toward the radially inner side.
1 more element
Dependencies are inferred from the claim text.