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. 07, 2000
Filed:
Mar. 23, 1998
Applicant:
Inventors:
Michel Broussely, Liguge, FR;
Pascal Flament, Bordeaux, FR;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 56 ; 429 94 ; 4292311 ; 4292318 ;
Abstract
The present invention provides a sealed electrochemical cell comprising a container containing a spiral-wound electrochemical group and at least one safety device for the event of a rise in internal pressure, wherein said safety device comprises gas vent first means allowing gas to escape to the outside of said container in the event of internal pressure rising, co-operating with holding second means for holding said group inside said container and organized so as to create a gap between said group and the inner wall of said container to allow said gas to flow.