Title:
REGISTRATION ARRANGEMENT FOR FUEL CELL ASSEMBLIES
Document Type and Number:
WIPO Patent Application WO2005045973
Kind Code:
A3
Abstract:
A registration arrangement for a fuel cell stack assembly incorporates registration posts ( 212 ) and registration apertures or recesses ( 210 ). Fuel cell assemblies of the stack may include first ( 202 ) and second ( 206 ) flow field plates and a membrane electrode assembly (MEA) ( 204 ) having an active area. Registration apertures are defined in each of the MEA and the first and second flow field plates. The respective registration apertures are situated within non-active areas of the MEA when the first and second flow field plates and the MEA are in axial alignment. Registration posts are configured for reception within the registration apertures. Each of the registration posts has an outer surface differing in shape from a shape of the inner surface of the registration apertures. The inner surface of the registration apertures contact the outer surface of the registration posts at a plurality of discrete press-fit locations.
Inventors:
SAULSBURY KIM B (US)
BOONE MARY R (US)
O'BRIEN DENNIS P (US)
FERGUSON DENNIS E (US)
BOUCHER PAUL M (US)
BOONE MARY R (US)
O'BRIEN DENNIS P (US)
FERGUSON DENNIS E (US)
BOUCHER PAUL M (US)
Application Number:
PCT/US2004/035215
Publication Date:
April 27, 2006
Filing Date:
October 25, 2004
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
H01M8/02; B23P19/00; H01M2/00; H01M2/02; H01M2/14; H01M6/00; H01M8/00; H01M8/10; H01M8/24
Foreign References:
| US6344290B1 | 2002-02-05 | |||
| US20030162080A1 | 2003-08-28 | |||
| US5629104A | 1997-05-13 | |||
| US6270917B1 | 2001-08-07 | |||
| US5484666A | 1996-01-16 |
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