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:
Dec. 23, 1986
Filed:
Jul. 31, 1984
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
2731 / ; 273169 ; 273173 ; 273D / ; 273D / ; 428247 ; 428408 ; 428902 ;
Abstract
A golf club head having a face portion for striking a ball, the face portion being formed by a complex block comprising a plurality of ceramic plates and layers of glass fibers or carbon fibers laminated alternately. By such a complex construction, the sweet spot and the center of gravity distribution as well as the hardness and roughness of a ball striking surface can be changed as desired.