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. 03, 2000
Filed:
Mar. 11, 1997
Ichiro Yasuoka, Hirakata, JP;
Mamoru Iida, Kadoma, JP;
Kikuo Senoo, Kobe, JP;
Takabumi Fujii, Suita, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
To present a processing apparatus capable of forming an annular support portion for mounting a sealing plate on an elliptical battery case can at high precision and high productivity, and a structure of an elliptical battery using an elliptical battery case can. An elliptical battery case can 10 is rotatably held by a case can support mechanism 13. The battery case can 10 is rotated about its tubular center by a case can rotary mechanism 18. Two groove forming rollers 23, 24 are mounted on an oscillatable roller support lever 28. The roller support lever 28 traces the shape of the outer circumference of the battery case can 10, and oscillates within a plane orthogonal to the tubular center of the battery case can 10, and receives a pressing force from a pressurizing device 29 to press the both groove forming rollers 23, 24 against the outer circumference of the battery case can 10. As a result, an annular groove 50 is formed in the outer circumference of the elliptical battery case can 10, and an annular support portion 40 is formed in the inner circumference.