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:
May. 14, 2019
Filed:
Jun. 22, 2015
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
Makoto Yoshida, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Abstract
A golf club set includes golf clubs with different club numbers and loft angles. Each golf club head of golf clubs includes a crown portion, a face portion, and a sole portion. The sole portion includes a front region and a rear region, the front region being arranged on the face side, and the rear region being arranged on the back side. The front region has a flat front surface, and the rear region has a curved rear surface continuous with the front region. Among the golf clubs included in the golf club set, out of at least a pair of golf clubs having adjacent club numbers, the radius of curvature of the rear surface of the golf club having the higher club number is smaller than the radius of curvature of the rear surface of the golf club having the lower club number.