Induction heating apparatus for controlling the welding...

Details Induction heating apparatus for controlling the welding... Induction heating apparatus for controlling the welding...

2007-08-14

2007-08-14

Robinson, Daniel (Department: 3742)

Electric heating

Inductive heating

Metal working

C219S535000

Reexamination Certificate

active

10709595

ABSTRACT:
The present invention relates to a novel induction heating apparatus for controlling the welding parameter of temperature for a pre-weld heating operation, interpass operation, or a hydrogen bake-out operation. Specifically, the present invention relates to using a novel induction heating apparatus for controlling this welding parameter. The heating device is comprised of a pair of opposed heating collars placed on either side of a pipe comprising a weld joint. The heating device transfers heat from the collar to the weld joint surface by induction providing a method of controlling this welding parameter.

REFERENCES:
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patent: 3829654 (1974-08-01), Eisler
patent: 5169176 (1992-12-01), Brossard
patent: 5359179 (1994-10-01), Desloge et al.
patent: 5484506 (1996-01-01), DuPont et al.
patent: 5614120 (1997-03-01), Wenzel
patent: 5820720 (1998-10-01), Campbell
patent: 5883363 (1999-03-01), Motoyoshi et al.
patent: 6054691 (2000-04-01), McGwire

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