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:
Mar. 19, 1996
Filed:
Jan. 07, 1994
Applicant:
Inventor:
Itsushi Nagamoto, Hamamatsu, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273169 ; 2731 / ; 2731 / ;
Abstract
In construction of a shell-type golf club head having a cavity and a hosel shaft hole communicating with the cavity, a mass made of solidified low melting point metal or synthetic resin containing dispersed metallic balls is provided at a selected position within the cavity through infusion via the shaft hole. Supplemental mass addition and weight distribution adjustment can be both carried out very simply without any substantial rise in cost. When located on an internal wall of the cavity contiguous to the club head face, the mass provides enlarged sweet spot on the face.