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. 16, 2004
Filed:
Dec. 20, 2001
Manfred Herrmann, Ginsheim, DE;
General Motors Corporation, Detroit, MI (US);
Abstract
A hydrogen feed system for a fuel cell arrangement in which the hydrogen can be taken at a higher pressure from a supply tank standing under pressure or under pressure from a reforming device and can be fed after relaxation to a lower pressure into the fuel cell arrangement, with a return flow loop being provided in the hydrogen circuit, so that a part of the non-consumed hydrogen emerging from the fuel cell arrangement can be fed back into the latter, is characterized in that a pump is provided which brings about the recirculation of the hydrogen and which can be driven from the pressure energy of the hydrogen taken from the tank or coming from a reforming unit.