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. 04, 2006
Filed:
Mar. 24, 2003
Applicants:
Robert H. Artibise, Vancouver, CA;
Simon Farrington, Vancouver, CA;
Inventors:
Robert H. Artibise, Vancouver, CA;
Simon Farrington, Vancouver, CA;
Assignee:
Ballard Power Systems, Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A membrane electrode assembly with an improved integrated seal comprises an edge seal having an inboard pad attached to the edge of the electrodes, a flexible coupling adjacent the pad, and a sealing element adjacent the coupling. The sealing element is significantly thicker than the pad, and the flexible coupling isolates the pad from stress experienced in the sealing element. Thus, greater compression can be applied to the sealing element, thereby providing an improved and more reliable seal, without overly compressing and damaging the attached pad.