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. 25, 2023
Filed:
Feb. 22, 2021
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Takashi Nakamura, Kobe, JP;
Satoru Hanamitsu, Kobe, JP;
Shimpei Oyama, Kobe, JP;
Yuki Nagano, Kobe, JP;
Naoyoshi Ueda, Kobe, JP;
Masahiko Ueda, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;
Abstract
In a head, a center vertical cross section passing through a face center satisfies the following (a) and (b): (a) when a boundary point between an inner surface of a crown portion and an inner surface of a face portion is defined as a CF inner surface boundary point, a curvature radius of a head inner surface at the CF inner surface boundary point is 6.0 mm or greater and 10.0 mm or less, and the head thickness at the CF inner surface boundary point is 2.0 mm or greater; and(b) when a spot located 10 mm apart from the CF inner surface boundary point toward the crown side is defined as a spot C, the head thickness reduces gradually from the CF inner surface boundary point to the spot C, and the head thickness at the spot Cis 1.0 mm or less.