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:
Jul. 08, 2014
Filed:
May. 06, 2009
Sang-eun Cheon, Suwon-si, KR;
Jae-kyung Kim, Suwon-si, KR;
Hye-won Yoon, Suwon-si, KR;
Seok-yoon Yoo, Suwon-si, KR;
Sang-Eun Cheon, Suwon-si, KR;
Jae-Kyung Kim, Suwon-si, KR;
Hye-Won Yoon, Suwon-si, KR;
Seok-Yoon Yoo, Suwon-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A secondary battery includes an electrode assembly having a positive electrode, a negative electrode and a separator interposed between the positive and negative electrodes and a container for receiving the electrode assembly inside thereof. The secondary battery also includes a cap assembly fixed to the container to seal the container and a gasket disposed between the container and the cap assembly. The gasket has at least one concavo-convex portion on a surface contacting the container and/or the cap assembly. This improved gasket structure enhances the air tightness of the secondary battery.