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:
Oct. 24, 2017
Filed:
Sep. 09, 2015
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
Naoyoshi Ueda, Kobe, JP;
Masahiko Ueda, Kobe, JP;
Yasushi Sugimoto, Kobe, JP;
Takashi Nakamura, Kobe, JP;
Seiji Hayase, Kobe, JP;
Wataru Kimizuka, Kobe, JP;
DUNLOP SPORTS CO. LTD., Kobe-shi, Hyogo, JP;
Abstract
A golf clubincludes a head, a shaft, and a grip. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2920 (kg·cm) or greater and less than 2970 (kg·cm). Isw/Ige is equal to or less than 2.48. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below.×(+60)  (1)×()  (2)