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:
Jul. 23, 1991
Filed:
Mar. 20, 1990
Applicant:
Inventors:
Shinichi Kakiuchi, Yokohama, JP;
Seisuke Tomita, Tokorozawa, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273227 ; 273231 ;
Abstract
A thread-wound golf ball comprising; a liquid center having a diameter in the range of 26 to 30 mm and having a hollow spherical center backing with a liquid contained therein, a thread rubber layer, and a cover thereon, said center backing being formed of a rubber material selected from the group consisting of natural rubber and blends of natural rubber having a JIS A hardness of 44 to 58 and a thickness of 1.7 to 2.3 mm, said liquid having a specific gravity of 1.01 to 2.5, and said liquid center exhibiting a deflection of 10 mm under a load of 1 to 2 kg and a deflection of 15 mm under a load of 3 to 6.5 kg.