Induction heating apparatus

Details Induction heating apparatus Induction heating apparatus

2005-01-18

2005-01-18

Hoang, Tu (Department: 3742)

Electric heating

Inductive heating

Metal working

C219S672000, C219S674000, C219S675000

Reexamination Certificate

active

06844533

ABSTRACT:
An induction heating apparatus seals a container, such as a bottle, with a non-tampering seal. The induction heating apparatus has a concentrator and a coil assembly. The coil assembly includes multiple coil devices. Each coil device includes a bobbin with a central tube and an insulated electrical conductor. The insulated electrical conductor is wound around the central tube of the bobbin and is electrically connected to an alternating current power source. The bobbin is mounted in the concentrator. When alternating current is applied to the insulated electrical conductor, an electromagnetic field is created that will induce in an aluminum foil in the non-tampering seal. The aluminum foil will be heated and the heat in the aluminum foil will be transferred to a layer of heat active polymer in the non-tampering seal, which will quickly bond the non-tampering seal to the bottle.

REFERENCES:
patent: 4048458 (1977-09-01), Zirk, Sr.
patent: 4340038 (1982-07-01), McKean
patent: 4371768 (1983-02-01), Pozna
patent: 5353494 (1994-10-01), Bisbee et al.
patent: 5847370 (1998-12-01), Sluka et al.
patent: 6084225 (2000-07-01), Schmitt

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