Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-05-12
2010-02-09
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S047000
Reexamination Certificate
active
07659024
ABSTRACT:
In a fuel cell composed of a pair of separators with a membrane electrode assembly sandwiched therebetween, gas passages having a plurality of generally linear passage portions, and bent passage portions each of which makes one end portion of the linear passage portions communicated with the other end portion of the linear passage portions, are formed so as to be communicative from a gas introducing port to a discharge port. In inner wall surfaces of the groove portions of the separators constituting the linear passage portions, water-retaining groove portions capable of retaining inside thereof at least part of water generated in the gas passage are formed in such a grooved configuration as to be substantially continuous along the passage portion. As a water drop generated within the gas passage makes contact with retained water within the water-retaining groove portions, growth of the water drop is suppressed to avoid any blockage of the gas passage, by which the anti-flooding property is improved.
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International Search Report issued Jul. 18, 2006 in the International (PCT) Application of which the present application is the U.S. National Stage.
Kawabata Norihiko
Kusakabe Hiroki
Matsumoto Toshihiro
Nagao Yoshiki
Yoshizawa Naoko
O'Neill Karie
Panasonic Corporation
Ryan Patrick
Wenderoth , Lind & Ponack, L.L.P.
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