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:
May. 11, 2004
Filed:
Mar. 11, 2003
Applicant:
Inventor:
Robert M. Janmey, Columbia Township, OH (US);
Assignee:
Eveready Battery Company, Inc., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/12 ;
U.S. Cl.
CPC ...
H01M 2/12 ;
Abstract
A pressurized container with a vent assembly that reliably prevents resealing of a vented seal member is provided. In one embodiment, the vent assembly seals the end of a container that includes a first electrode, a second electrode, a separator located between the first and second electrodes and an electrolyte in contact with the electrodes and separator. The seal member includes at least two protrusions on the surface of the seal member. The protrusions define and maintain a gap between the cover and seal member after the seal member has ruptured thereby allowing pressure within the container to be reduced.