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:
Aug. 06, 1991
Filed:
Jul. 13, 1989
Applicant:
Inventors:
Assignees:
Mizuno Corporation, Osaka, JP;
Tokyo Yogyo Company, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
2731 / ; 273D / ; 273173 ;
Abstract
The present invention provides a golf club head at least the face portion of which is composed of composite materials characterized by aluminum or aluminum alloy either of which are combined with ceramics which are powdery. The golf club head has high strength, high hardness, high elasticity and a good wear resistance, and the face portion of the golf club head of the present invention shows little wear so that the durability of the club head is remarkably high. Moreover, by this invention it is easy to produce a large quantity of golf club heads so that the cost of production is largely diminished and so that a golf club head which is more practical is now available.