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:
Oct. 07, 1980
Filed:
Feb. 23, 1979
Applicant:
Inventors:
Yuzo Takahashi, Iwatsuki, JP;
Yoshinari Maeda, Iwatsuki, JP;
Yasuyuki Tanaka, Iwatsuki, JP;
Kastumi Nagai, Iwatsuki, JP;
Shiro Oyama, Iwatsuki, JP;
Assignee:
Hokkai Can Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
113 12 ; 156218 ; 156443 ; 156498 ;
Abstract
In a can body forming process and equipment therefor, the cooling action to be added to the joining portions at the opposite ends of a can body blank is effected only at the lower part of the can forming cylinder so that said joining portions can be joined substantially without undergoing internal strain and with a higher forming accuracy.