Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Grouping of fuel cells into stack or module
Reexamination Certificate
2011-07-05
2011-07-05
Ryan, Patrick (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Grouping of fuel cells into stack or module
C429S414000, C429S456000, C429S458000, C429S512000, C429S514000
Reexamination Certificate
active
07972740
ABSTRACT:
To mitigate bubble blockage in water passageways (78, 85), in or near reactant gas flow field plates (74, 81) of fuel cells (38), passageways are configured with (a) cross sections having intersecting polygons or other shapes, obtuse angles including triangles and trapezoids, or (b) hydrophobic surfaces (111), or (c) differing adjacent channels (127, 128), or (d) water permeable layers (93, 115, 116, 119) adjacent to water channels or hydrophobic/hydrophilic layers (114, 120), or (e) diverging channels (152).
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Kohnle, J. et al, “A Unique Solution for Preventing Clogging of Flow Channels by Gas Bubbles”, IEEE0-7803-7185-2/02, (date not known), pp. 77-80.
Allen, Jeffrey S., “Capillary-Driven Flow in Liquid Filaments Connecting Orthogonal Channels”, Slides used in presentation at Computational Fuel Cell Dynamics Workshop, Banff, Canada, Apr. 19-25, 2003, (Pages not numbered; Index refers to pp. 2-42), (publication information not known).
Balliet Ryan J.
Darling Robert M.
Evans Craig E.
Jarvi Thomas D.
Meyers Jeremy P.
Lewis Ben
Ryan Patrick
UTC Power Corporation
Williams M. P.
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