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. 29, 1994
Filed:
Oct. 20, 1992
Rene M Laurens, Naperville, IL (US);
Thomas G Benjamin, Downers Grove, IL (US);
Robert P Bachta, Chicago, IL (US);
M-C Power Corporation, Burr Ridge, IL (US);
Abstract
A fuel cell electrolyte with an electrochemically inactive matrix, an electrochemically active electrolyte, and a substantially gas impervious metallic foil in the central region of the thickness of the electrolyte extending around its periphery over at least a portion of the fuel cell peripheral seal area and into the electrolyte active area reducing gas crossover between the anode and cathode chambers. The gas impervious metallic foil may extend beyond the periphery of the electrolyte into the fuel cell peripheral seal area and have a resilient gasket on each side forming the fuel cell peripheral seal with seal structures extending from separator plates, thereby eliminating conventional electrolyte wet seals. The seal structures according to this invention are also suitable for sealing internal manifolds in fuel cell stacks.