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. 18, 2003
Filed:
Jan. 03, 2000
Applicant:
Inventors:
Takayuki Tanaka, Kobe, JP;
Naoki Baba, Kobe, JP;
Hiroaki Tanaka, Kobe, JP;
Hiroshi Hirata, Kobe, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 4/318 ; B29C 4/320 ;
U.S. Cl.
CPC ...
B29C 4/318 ; B29C 4/320 ;
Abstract
A manufacturing method for an one-piece ball formed with vulcanization in which a partial mold has eight grooves in a radius direction of a mating face, and ends of spews generated when the vulcanization is conducted do not connect and unify one another.