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:
Jul. 12, 2016
Filed:
Sep. 24, 2014
Applicant:
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
Inventor:
Kazuhiro Hayashi, Kobe, JP;
Assignee:
DUNLOP SPORTS CO. LTD., Kobe-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/04 (2015.01); A63B 53/00 (2015.01); A63B 53/02 (2015.01);
U.S. Cl.
CPC ...
A63B 53/0466 (2013.01); A63B 53/02 (2013.01); A63B 2053/005 (2013.01); A63B 2053/042 (2013.01); A63B 2053/0408 (2013.01); A63B 2053/0412 (2013.01); A63B 2053/0437 (2013.01); A63B 2053/0454 (2013.01); A63B 2053/0458 (2013.01);
Abstract
A golf club setincludes a plurality of golf clubstohaving different club lengths. Each of the golf clubstoincludes a head, a shaft, and a grip. The club length of each of the clubstois 38.5 inches or greater and 42 inches or less. Face progression of the headis substantially constant. If a moment of inertia of the head about an axis line of the shaft is defined as MI, an MI difference ratio between the adjacent clubs is equal to or less than 3%. Preferably, a loft angle is equal to or greater than 17 degrees in each of all the clubsto