Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-02-21
2006-02-21
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S006000, C429S006000, C429S010000
Reexamination Certificate
active
07001685
ABSTRACT:
A load frame with mechanical springs for providing compression to a fuel cell stack during assembly and operation of a fuel cell assembly. The stack assembly load frame includes a base plate for supporting the stack, a moveable spring holder above the stack, a retaining plate above the spring holder, and tubular supports or rods retaining the post-sintered spacing established by the applied load defining the spacing of the base plate from the retaining plate. A spring for maintaining compression in each stack is positioned between the spring holder and the retaining plate. The invention further comprises a method for assembling a fuel cell assembly to provide an adequate compressive load to the stack during assembly and operation.
REFERENCES:
patent: 6190793 (2001-02-01), Barton et al.
patent: 2003/0096147 (2003-05-01), Badding et al.
patent: 100 03 528 (2001-08-01), None
patent: 0936 689 (1999-08-01), None
patent: 0936689 (1999-08-01), None
patent: 02/19456 (2002-03-01), None
patent: 03/007400 (2003-01-01), None
Bobrov Larisa S.
Faville Michael T.
Haltiner, Jr. Karl J.
Kelly Sean M.
Mukerjee Subhasish
Delphi Technologies Inc.
Marshall Paul L.
Martin Angela J.
Ryan Patrick Joseph
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