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. 28, 2010
Filed:
Jan. 14, 2009
Seok Gyun Chang, Yongin-si, KR;
Soon Ki Woo, Yongin-si, KR;
Youn Han Chang, Yongin-si, KR;
Yoo Eup Hyung, Yongin-si, KR;
Seok Gyun Chang, Yongin-si, KR;
Soon Ki Woo, Yongin-si, KR;
Youn Han Chang, Yongin-si, KR;
Yoo Eup Hyung, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A lithium ion secondary battery including an electrode assembly, a center pin positioned within the electrode assembly, a variable-length member coupled to the center pin, the variable-length member adapted to increase in length when an interior temperature of the center pin reaches a critical temperature, a can containing the electrode assembly, the center pin, and the variable-length member, and a cap assembly coupled to the can, the cap assembly having safety means fracturable in response to the variable-length member being increased in length.