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:
Oct. 26, 1993
Filed:
Sep. 06, 1991
Applicant:
Inventor:
Atsushi Tsuchida, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273 78 ; 273173 ;
Abstract
In construction of a shell-type wood golf club head, at least its crown is made of a material of a rigidity lower than that of a material forming the other sections of the club head. The crown exhibits upward elastic deformation upon striking a ball and allows the face to incline rearwards, thereby providing a temporarily increased loft which suppresses undesirable back spin of the balls and assures longer shots and smooth run of the balls after landing.