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:
Apr. 21, 2026
Filed:
Jun. 29, 2022
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Akihiko Kobayashi, Kobe, JP;
Hiroshi Hasegawa, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Hyogo, JP;
Abstract
A golf club comprises a tubular shaft and a weight member. The shaft has a first end having a first inner diameter and a second end on the opposite side thereof. The weight member is attached to the first end, and comprises an insertion portion disposed in the hollow of the shaft, an engaging portion engaged with the first end on the outside of the shaft, protrusions protruding radially from the insertion portion. Each protrusion has a tapered portion in which the radially outwardly protruding height from the insertion portion is decreased toward the second end. The length of each tapered portion is more than 50% of the maximum length of the protrusion, both measured in the shaft axial direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile