Title:
SHAFT AND GOLF CLUB
Document Type and Number:
WIPO Patent Application WO/2015/037430
Kind Code:
A1
Abstract:
This shaft (1) is provided with an outer shell. The outer shell is provided with: a cylindrical part (2); and a curved part (3) which is continuously provided to the cylindrical part (2), and which is provided with a plurality of protrusions (3a) arranged side by side in an outer peripheral direction of the shaft (1). The curved part (3) has a uniform thickness, and the plurality of protrusions (3a) thereof extend in an extension direction of the shaft (1). As a result, a shaft with which the EI thereof can be reduced while maintaining the strength thereof, and a golf club provided with said shaft can be obtained.
More Like This:
Inventors:
DOI KAZUHIRO (JP)
KAMO ARATA (JP)
FUJIWARA KOSUKE (JP)
KAMO ARATA (JP)
FUJIWARA KOSUKE (JP)
Application Number:
PCT/JP2014/072254
Publication Date:
March 19, 2015
Filing Date:
August 26, 2014
Export Citation:
Assignee:
MIZUNO KK (JP)
NHK SPRING CO LTD (JP)
NHK SPRING CO LTD (JP)
International Classes:
A63B53/12
Foreign References:
| US2150737A | 1939-03-14 | |||
| JP3049175U | 1998-06-02 | |||
| US5976032A | 1999-11-02 | |||
| JPS51149264U | 1976-11-30 | |||
| JPS5466972U | 1979-05-12 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
Download PDF: