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:
Aug. 25, 2009
Filed:
Feb. 18, 2005
Robert A. Yoppolo, New Milford, CT (US);
Richard E. Durkot, East Walpole, MA (US);
Daniel Allen, New Milford, CT (US);
James Cervera, Sandy Hook, CT (US);
Oleg Podoprigora, New Milford, CT (US);
Robert A. Yoppolo, New Milford, CT (US);
Richard E. Durkot, East Walpole, MA (US);
Daniel Allen, New Milford, CT (US);
James Cervera, Sandy Hook, CT (US);
Oleg Podoprigora, New Milford, CT (US);
The Gillette Company, Boston, MA (US);
Abstract
And end cap assembly and venting system therein for closing and sealing the open end of a cell housing. The end cap assembly comprises a sealing disk underlying an end cap, and a metal support disk between the end cap and the sealing disk. The metal support disk has a plurality of primary vent apertures and a plurality of secondary vent apertures through its surface. The primary vent apertures are spaced apart along a path located at a greater distance from the central longitudinal axis of the metal support disk than the secondary vent apertures. The insulating sealing disk may have a thinned portion therein forming an rupturable membrane circumventing the central hub of the sealing disk. The insulating sealing disk may have protrusions emanating from its top surface to deflect the membrane during rupture. The venting system releases internal gases rapidly from the cell in the event of an abusive or short circuit discharge.