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:
Jun. 05, 1984
Filed:
Jan. 18, 1983
Morio Ishizaki, Kobe, JP;
Ishizaki Press Kogyo Co., Ltd., Itami, JP;
Abstract
A cathode lid of a battery container having a peripheral portion U letter shaped in section, with the outer peripheral side formed thicker than the inner peripheral side, and a side formed thicker than the inner peripheral side, and a method of manufacturing the same. In a process of manufacture of the anode lid, the periphery of a blank of a disk is bent in one direction vertical to the surface thereof, thereby to achieve a structure of a vessel having a bent periphery and then the vessel structure is subjected to paired working processes of punch and knockout, whereby a pressing force is exerted so that the edge of the bent periphery and the central portion of the main flat portion of the blank comes to to be close to each other in the direction vertical to the surface of the blank. As a result, the periphery is formed to be U letter shaped in section, while the central portion is maintained flat.