Patent ID: 8048585
Filing Date: 2011-11-01
Classification: H01M,Y02E,Y10T

Abstract:
1. A plate for a membrane humidifier for a fuel cell comprising: a substantially planar top layer formed from a diffusion medium; a substantially planar bottom layer formed from a diffusion medium; a substantially planar array of elongate ribbons disposed between said top layer and said bottom layer to define a plurality of flow channels therebetween, said ribbons produced from a polymeric material; and a first sealing bar having a first portion and a second portion, the first portion having a thickness greater than a thickness of the second portion, the second portion of said first sealing bar sandwiched between said top layer and said bottom layer, wherein the thickness of the first portion is equal to a height of the plate, and the thickness of the second portion, a thickness of the top layer, and a thickness of the bottom layer combined is equal to the height of the plate.