Metal deforming – By application of fluent medium – or energy field – By kinetic energy of fluid or field
Reexamination Certificate
2006-07-18
2006-07-18
Banks, Derris H. (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
By kinetic energy of fluid or field
C072S379200, C029S419200
Reexamination Certificate
active
07076981
ABSTRACT:
A scheme for electromagnetic formation of fuel cell plates is provided. In accordance with one embodiment of the present invention, a method of forming a flow field plate is provided where an electromagnetic actuator is arranged opposite a profiled surface of a die portion. The profiled surface of the die portion is configured to at least partially define a network of flow field plate flow passages. The electromagnetic actuator is configured to generate a magnetic field upon activation and a sheet of material is positioned between the electromagnetic actuator and the profiled die surface. The sheet of material is characterized by an electrical conductivity sufficient to yield a repulsive electromagnetic force between the actuator and the sheet upon activation of the actuator. The passages are formed by driving the electromagnetic actuator such that the repulsive force is of sufficient intensity to deform the sheet against the profiled die surface.
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Bradley John R.
Daehn Glenn S.
Schroth James G.
Banks Derris H.
Wolfe Debra
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