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Title:
SEALING OF MULTI-HEIGHT SURFACES
Document Type and Number:
WIPO Patent Application WO2004079839
Kind Code:
A3
Abstract:
Fuel cell gaskets are employed to seal around an individual cell of a fuel cell assembly. The individual cell includes a membrane electrode assembly where some of the components do not extend as close to the perimeter of the cell as others, thereby creating a gap. The gaskets, which may be formed of laminated layers, each include a pair of sealing beads extending therefrom. The sealing beads are formed to extend toward and seal against separator plates, and have different heights to account for the gap caused by the discontinuous layers of the membrane electrode assembly.

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JP2004356100CONFORMITY OF GAS FLOW OF PEM FUEL CELL HAVING CHARACTERISTICS ON LOCAL AREA
Inventors:
SMITH JEFFREY ALAN (US)
Application Number:
PCT/US2004/002900
Publication Date:
July 28, 2005
Filing Date:
February 02, 2004
Export Citation:
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Assignee:
FREUDENBERG NOK GP (US)
SMITH JEFFREY ALAN (US)
International Classes:
H01M2/00; H01M2/08; H01M4/86; H01M8/00; H01M8/02; H01M8/10; H01M; (IPC1-7): H01M2/00; H01M2/08; H01M4/86; H01M8/00
Foreign References:
US20020187384A12002-12-12
US6020083A2000-02-01
US20020055027A12002-05-09
US20020127461A12002-09-12
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