Electric heating – Inductive heating – Specific inductor configuration
Patent
1999-05-17
2000-07-04
Leung, Philip H.
Electric heating
Inductive heating
Specific inductor configuration
219676, 219670, 219635, 219674, 336198, H05B 640
Patent
active
060842253
ABSTRACT:
A getter heating coil assembly producing a focused magnetic field for heating objects in close proximity to the coil assembly. The coil assembly comprises electrical conductors wound on a coil bobbin, the coil bobbin having a central spindle around which the conductors are wound. The wound bobbin is assembled with a magnetic field concentrator, said field concentrator having a central core extending from a base, and a side wall extending from the base to enclose the wound bobbin. The central core of the field concentrator fits within the spindle on the bobbin and extends through it. The coil bobbin remains exposed on one side for emission of focused electromagnetic energy when alternating current is supplied to the coil windings. A button of high magnetic permeability material may be attached to the field concentrator for focusing the emitted electromagnetic energy toward the center of the coil.
REFERENCES:
patent: 3648005 (1972-03-01), Rudd
patent: 4340038 (1982-07-01), McKean
patent: 4371768 (1983-02-01), Pozna
patent: 4584449 (1986-04-01), Timmons
patent: 4673781 (1987-06-01), Nuns et al.
patent: 4704509 (1987-11-01), Hilmersson et al.
patent: 5713069 (1998-01-01), Kato
Article, entitled "Induction Coil Design For Getter Flashing", Getters Corporation of America, E.M. Palsha, pp. 2-7 (with two pages of drawings).
Leung Philip H.
The Lepel Corporation
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