Metal forming apparatus and process with resistance heating

Electric heating – Metal heating – Work holders

Reexamination Certificate

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Details

C219S050000

Reexamination Certificate

active

07732734

ABSTRACT:
An apparatus for forming a metal article includes a station which receives and supports a workpiece. The station has a source of electrical current and a source of a fluid. The station further includes a first and a second electrode clamp. Each clamp is in electrical communication with the source of current and in fluid communication with the source of fluid. The clamps engage a workpiece and deliver an electrical current and a fluid thereto. The system includes an actuator mechanically associated with at least one of the clamps. The actuator is operable in combination with a clamp to apply mechanical force to the workpiece. The system is operable to selectably control the temperature profile and/or ambient conditions of a workpiece during forming or processing steps. Disclosed are specific systems including modular systems. Also disclosed are methods for using the systems.

REFERENCES:
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patent: 4343661 (1982-08-01), Rice
patent: 4637844 (1987-01-01), Pfaffmann
patent: 4715907 (1987-12-01), Pfaffmann
patent: 5840136 (1998-11-01), Maruki et al.
patent: 6187113 (2001-02-01), Topker et al.
patent: 6463779 (2002-10-01), Terziakin
patent: 7429711 (2008-09-01), Machrowicz
patent: 2003/0190493 (2003-10-01), Nomura et al.
patent: 2004/0238080 (2004-12-01), Vandeputte et al.
patent: WO 2006/055589 (2006-05-01), None

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