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:
May. 29, 2001
Filed:
Dec. 03, 1998
Applicant:
Inventors:
Michio Inoue, Chichibu, JP;
Keisuke Ihara, Chichibu, JP;
Assignee:
Bridgestone Sports Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A23G 1/22 ;
U.S. Cl.
CPC ...
A23G 1/22 ;
Abstract
An injection mold for golf balls defines a spherical cavity therein and has a parting plane extending coplanar with the equator of the cavity. A plurality of molding material injecting gates are arranged in the mold body along or near the cavity equator, and a plurality of retractable core support pins are disposed in the mold at areas other than the cavity equator and poles so that the core support pins may be moved toward and away from the cavity center. A cover having a uniform gage and a smooth surface can be injection molded to produce a golf ball without radial misalignment of the core.