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Insertable fluid flow passage bridgepiece and method

United States Patent

January 25, 2000
View the Complete Patent at the US Patent & Trademark Office
A fluid flow passage bridgepiece for insertion into an open-face fluid flow channel of a fluid flow plate is provided. The bridgepiece provides a sealed passage from a columnar fluid flow manifold to the flow channel, thereby preventing undesirable leakage into and out of the columnar fluid flow manifold. When deployed in the various fluid flow plates that are used in a Proton Exchange Membrane (PEM) fuel cell, bridgepieces of this invention prevent mixing of reactant gases, leakage of coolant or humidification water, and occlusion of the fluid flow channel by gasket material. The invention also provides a fluid flow plate assembly including an insertable bridgepiece, a fluid flow plate adapted for use with an insertable bridgepiece, and a method of manufacturing a fluid flow plate with an insertable fluid flow passage bridgepiece.
Jones; Daniel O. (Glenville, NV)
Plug Power, L.L.C. (Latham, NY)
08/ 839,667
April 15, 1997
This invention was made with Government support under Contract No. DE-AC02-94CE0389awarded by The Department of Energy. The Government has certain rights in this invention.