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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.:

US 10828542 B1

PDFFull Text
Date of Patent:
Nov. 10, 2020

Filed:

Sep. 13, 2019

Golf club head

Applicant:

Sumitomo Rubber Industries, Ltd., Hyogo, JP;

Inventors:

Yuki Motokawa, Kobe, JP;

Seiji Hayase, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Hyogo, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Benjamin Layno

Int. Cl.
CPC ...
A63B 53/04 (2015.01); B29C 70/20 (2006.01); B29C 65/48 (2006.01); B29C 65/00 (2006.01); B29K 705/08 (2006.01); B29K 63/00 (2006.01); B29K 307/04 (2006.01); B29L 31/52 (2006.01); A63B 60/54 (2015.01);
U.S. Cl.
CPC ...
A63B 53/0466 (2013.01); B29C 65/48 (2013.01); B29C 66/721 (2013.01); B29C 66/742 (2013.01); B29C 70/20 (2013.01); A63B 53/04 (2013.01); A63B 53/0408 (2020.08); A63B 53/0412 (2020.08); A63B 53/0433 (2020.08); A63B 53/0437 (2020.08); A63B 60/54 (2015.10); A63B 2209/00 (2013.01); A63B 2209/02 (2013.01); A63B 2209/023 (2013.01); B29K 2063/00 (2013.01); B29K 2307/04 (2013.01); B29K 2705/08 (2013.01); B29L 2031/5227 (2013.01);
Abstract

A golf club head includes a striking face, a crown and a sole. The crown and/or the sole includes an FRP member formed by a fiber reinforced plastic that contains a fiber and a matrix resin. The head has one or more characteristic mode shapes each having a natural frequency of 3000 Hz or greater and 5000 Hz or less. Of the one or more characteristic mode shapes, one characteristic mode shape that has a largest amplitude of a center of figure of the FRP member is defined as a specific characteristic mode shape, the specific characteristic mode shape has a frequency that is defined as a specific modal frequency, and the specific modal frequency has a modal damping ratio that is defined as a specific modal damping ratio. The specific modal damping ratio of the head is less than or equal to 0.6%.

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