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:
Feb. 07, 1989
Filed:
Feb. 19, 1987
Applicant:
Inventors:
Koichi Enomoto, Hamamatsu, JP;
Tatsuo Nakanishi, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; A63B / ;
U.S. Cl.
CPC ...
264 454 ; 264 466 ; 2731 / ; 273172 ; 273171 ;
Abstract
In production of a wood-type golf club head having a FRP shell and a foam resin core, a seat hole is formed in the sole portion of the club head and closed by a support plate having a threaded through hole at the center of gravity thereof; foamable resin is infused into the FRP shell cavity in the form of fine beads or solution, a plug as a weight balance adjusting piece is screwed into the support plate in direct contact with the foam resin core for secure holding of the weight balance adjusting piece during use of the club.