Electromagnetic shield for an induction heating coil

Details Electromagnetic shield for an induction heating coil Electromagnetic shield for an induction heating coil

2005-03-08

2005-03-08

Ngo, Hung V. (Department: 2831)

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

C219S645000, C219S673000, C219S671000, C336S08400R

Reexamination Certificate

active

06864419

ABSTRACT:
An apparatus and process are provided for reducing the electromagnetic field intensity in selected regions for a field produced when ac current flows through one or more induction coils through which a workpiece moves for induction heating of the workpiece. The electromagnetic shield has transverse screen elements through which the workpiece moves at opposing ends of the one or more induction coils. One or two longitudinal screen elements connect the transverse screen elements.

REFERENCES:
patent: 3678428 (1972-07-01), Morris et al.
patent: 3761599 (1973-09-01), Beatty
patent: 3808489 (1974-04-01), Albright et al.
patent: 5495094 (1996-02-01), Rowan et al.
patent: 5837976 (1998-11-01), Loveless et al.

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