Hot wire control apparatus and method

Details Hot wire control apparatus and method Hot wire control apparatus and method

2006-07-11

2006-07-11

Evans, Robin (Department: 3742)

Electric heating

Heating devices

Tool or instrument

C219S512000, C219S494000, C219S243000

Reexamination Certificate

active

07075035

ABSTRACT:
Control system and apparatus for controlling current input to an electrical resistance element such as a seal wire. The system and apparatus of the present invention is a closed loop feedback modification to conventional systems, and takes advantage of the inherent expansion of the seal wire as it is heated. The feedback mechanism monitors the length of the sealing wire, and adjusts the current applied to the wire, responsive to that monitored length.

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Copy of European Search Report dated Apr. 28, 2004.

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