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:
Nov. 22, 2022
Filed:
Nov. 24, 2020
Applicant:
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Inventors:
Hiromasa Tsunashima, Kobe, JP;
Masahide Onuki, Kobe, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/04 (2015.01); A63B 102/32 (2015.01);
U.S. Cl.
CPC ...
A63B 53/0466 (2013.01); A63B 53/0408 (2020.08); A63B 53/0412 (2020.08); A63B 2102/32 (2015.10);
Abstract
A golf club head has a hollow therein and comprises a face portion, a crown portion and a sole portion. The face portion comprises a central zone including a face center, and a peripheral zone surrounding the central zone. Each of the central zone and the peripheral zone has a flexural stiffness defined by E×t/12, wherein E is the Young's modulus (GPa) and t is the thickness (mm) of the zone concerned. The ratio sc/sp of the flexural stiffness Sc of the central zone to the flexural stiffness sp of the peripheral zone is 5.0 to 55.0.