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:
Jan. 31, 2006
Filed:
Mar. 26, 2003
Robert A. Yoppolo, New Milford, CT (US);
Kevin Duprey, West Hartford, CT (US);
Thomas L. Lindsay, Bridgeport, CT (US);
Oleg Podoprigora, New Milford, CT (US);
Robert A. Yoppolo, New Milford, CT (US);
Kevin Duprey, West Hartford, CT (US);
Thomas L. Lindsay, Bridgeport, CT (US);
Oleg Podoprigora, New Milford, CT (US);
The Gillette Company, Boston, MA (US);
Abstract
An end cap seal assembly for an electrochemical cell such as an alkaline cell is disclosed. The end cap assembly comprises a convoluted end cap which may also function as a cell terminal and an underlying insulating sealing disk. The insulating sealing disk comprises a central boss and radially extending arm terminating in a downwardly sloped elbow and upwardly sloped peripheral edge. The end cap disk has at least one vent aperture therethrough which faces the ambient environment. The insulating disk has an annular groove in its top or bottom surface, which preferably circumvents the central boss. The base of the groove defines an a rupturable membrane portion of the insulating sealing disk. The rupturable membrane is designed to rupture, preferably when the cell internal gas pressure reaches a level between about 150 and 900 psig (1034×10and 6206×10pascal gage) advantageously, between about 150 and 700 psig (1034×10and 4827×10pascal gage).