Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2006-12-26
2008-08-12
Paschall, Mark (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S494000, C219S497000, C219S492000, C053S375900, C156S583200
Reexamination Certificate
active
07411162
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 both the actual current passing through the wire, and the length of the sealing wire, and adjusts the current applied to the wire, responsive to those monitored inputs. The usage of the sealing machine is also monitored and the application and amount of current flowing to the wire is varied based on this usage.
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Christman Russell T.
Kalinowski Michael A.
Michaelian James L.
Smith Mitchell W.
Nields & Lemack
Paschall Mark
Shanklin Corporation
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