Fuel cell stack electrically insulated fluid connector

Details Fuel cell stack electrically insulated fluid connector Fuel cell stack electrically insulated fluid connector

1987-11-16

1988-11-22

Davis, Jr., Albert W.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 54, 2853821, 2853825, 429 34, F16L 1112, F16L 2100

Patent

active

047860863

ABSTRACT:
An electrically insulated joint is provided between two fluid conduits, one of which is connected to a fuel cell stack, and the other of which is connected to a source of the fluid being circulated through the stack. The two conduits are both preferably formed from stainless steel, one of the conduits being larger than the other. An intermediate dielectric insulating sleeve is fitted onto the outside of the smaller conduit and extends beyond a free end thereof. The free end of the smaller conduit and a portion of the dielectric sleeve are expanded to the size of the larger conduit's bore and telescoped into the larger conduit's bore. The free end of the larger conduit is then shrunk down onto the outside surface of the unexpanded part of the dielectric sleeve and the smaller conduit. The resultant point has terminal cylindrical portions and an intermediate tapered portion.

REFERENCES:
patent: 1320731 (1919-11-01), Bown
patent: 3556567 (1971-01-01), O'Connor
patent: 3686747 (1972-08-01), Bagnulo
patent: 4174124 (1979-11-01), Dockree
patent: 4192534 (1980-03-01), Bernatt et al.
patent: 4411457 (1983-10-01), Inoue et al.
patent: 4706737 (1987-11-01), Taylor et al.

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