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:
Apr. 02, 2019
Filed:
Nov. 09, 2017
Applicant:
Dunlop Sports Co. Ltd., Hyogo, JP;
Inventor:
Yosuke Yamamoto, Hyogo, JP;
Assignee:
DUNLOP SPORTS CO. LTD., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 49/02 (2015.01); A63B 49/10 (2015.01);
U.S. Cl.
CPC ...
A63B 49/02 (2013.01); A63B 49/10 (2013.01); A63B 2049/0211 (2013.01); A63B 2049/0217 (2013.01); A63B 2209/02 (2013.01);
Abstract
A racket frame has an inner thick part () having an outer surface (), an inner surface () and a pair of middle surfaces () each positioned between the outer surface () and the inner surface (). A thickness (Ti) of the inner surface () is greater than a thickness (To) of the outer surface (). A thickness of the inner thick part () gradually increases toward the inside. Consequently, the middle surface () 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 () is equal to or greater than 0.5 mm.