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. 27, 1985
Filed:
Nov. 16, 1983
Applicant:
Inventor:
Donald S Cameron, Reading, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 20 ; 429 26 ; 429 34 ; 429 40 ;
Abstract
A fuel cell may be purged with inert gas and/or pre-heated and/or maintained at an elevated temperature by combusting the hydrogen fuel with air and passing the combustion product gases either through the cell or through a heat exchanger for imparting heat either to the electrolyte or to the fuel gases. Preferably the combustor includes a catalyst. The hydrogen can either be taken directly from the fuel supply or the 'waste' hydrogen periodically bled from the cell can be used. If the product gases are to be passed into the cell, the stoichiometry of the combustion should be controlled so that hydrogen is absent.