The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2020
Filed:
Nov. 30, 2018
Applicant:
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Inventor:
Yosuke Yamamoto, Kobe, JP;
Assignee:
SUMlTOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 49/02 (2015.01); A63B 49/14 (2015.01); A63B 49/08 (2015.01); A63B 49/10 (2015.01); A63B 60/52 (2015.01); A63B 49/022 (2015.01); A63B 60/54 (2015.01); A63B 60/48 (2015.01); A63B 102/02 (2015.01);
U.S. Cl.
CPC ...
A63B 49/14 (2013.01); A63B 49/02 (2013.01); A63B 49/022 (2015.10); A63B 49/08 (2013.01); A63B 49/10 (2013.01); A63B 60/48 (2015.10); A63B 60/52 (2015.10); A63B 60/54 (2015.10); A63B 2049/0201 (2015.10); A63B 2102/02 (2015.10); A63B 2209/02 (2013.01); A63B 2209/023 (2013.01);
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.