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:
Dec. 08, 2009
Filed:
Sep. 28, 2007
Kazuki Shimozono, Osaka, JP;
Hiroyuki Inoue, Osaka, JP;
Akifumi Nagao, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi-Shi, JP;
Abstract
A cylindrical battery, comprising: a cylindrical casing having a bottom, and has a short-diameter part near an opening thereof; an electrode assembly that is housed in the casing; and a sealing plate that seals the opening, wherein an insulating ring is inserted in a gap between the electrode assembly and the short-diameter part, the insulating ring including a main body, and at least three projections that are dispersively located and project outward from an outer edge of the main body in a diameter direction, and a distance between a design center point of the insulating ring and an outer edge of the main body is not longer than D/2 and a distance between the design center point and an outer edge of each of the projections is longer than D/2 and not longer than 102D/200, where D is an inside diameter of the casing measured within the space.