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:
Mar. 22, 2005
Filed:
Nov. 26, 2002
Masato Iwanaga, Tokushima, JP;
Syuichi Yamashita, Tokushima, JP;
Masanori Ogi, Tokushima, JP;
Zensaku Yasutake, Hyogo, JP;
Masato Iwanaga, Tokushima, JP;
Syuichi Yamashita, Tokushima, JP;
Masanori Ogi, Tokushima, JP;
Zensaku Yasutake, Hyogo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The center pinis cylindrical and tube-shaped, and each of the planes formed by the external surface of the center pinin the vicinity of the edgesandof the slitis angled toward the inside of the center pin. The edgesandare therefore arranged to be more inward than the imaginary circumference that complements the gap from the slitof the center pin, and consequently, the edgesandhave less possibility of contacting and damaging the spiral-wound electrode assemblyin the event an external force deforms the center pin Further, the planes formed by the external surface of the center pinin the vicinal areasandof the edgesandare angled so as to form an angle of no greater than 120 degrees.