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. 09, 2019
Filed:
Aug. 07, 2018
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Hiroyuki Takeuchi, Hyogo, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Hyogo, JP;
Abstract
A golf club includes a shaft-insertion hole, a shaft inserted to the shaft-insertion hole, and a ferrule attached to the shaft. The ferrule includes an upper part exposed to the outside, and a lower part located between the shaft-insertion hole and the shaft. The lower part of the ferrule includes at least one through hole. The through hole includes a chamfered portion on an outer surface side of the lower part. Preferably, the lower part includes a plurality of through holes. The through holes may be provided at respective four or more positions in a circumferential direction of the lower part. The through hole may have a minimum hole area of greater than or equal to 3 mmand less than or equal to 12 mm.