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:
Sep. 19, 1995
Filed:
Nov. 23, 1993
Applicant:
Inventors:
Itsushi Magamoto, Shizuoka, JP;
Tatsuya Hirakawa, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273 802 ; 2731 / ;
Abstract
In construction of a golf club head made of metal or fiber reinforced plastics, its hosel is configured such that rigidity in the toe-to-heel direction is larger than that in the ball-shooting direction. During swinging of the club to impact a ball, not only does the shaft of the club flex but also its hosel. This double flexing results in increased impact on the ball. In addition, the specified rigidity distribution avoids undesirable toe-down deformation which tends to cause mishitting of the ball.