Induction heating coil with conical base

Details Induction heating coil with conical base Induction heating coil with conical base

1990-10-22

1993-04-06

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1073, 219 1079, 156 69, 1562742, 1563806, H05B 640

Patent

active

052005879

ABSTRACT:
An induction heating coil with a conical base for fusing a plastic lid to a plastic container. A generally cylindrical container is placed in a generally cylindrical hollow nest having a conical upper wall portion. A plastic lid having a metallic layer is placed on an upper portion of the container. A portion of the lid and a portion of the container are pressed together between the conical wall and the conical coil base during a fusing operation. Container and lid are formed by pressure and heat to provide a uniform seal.

REFERENCES:
patent: 3632943 (1972-01-01), Engler
patent: 4478669 (1984-10-01), Zeller et al.
patent: 4539456 (1985-09-01), Mohr
patent: 4571472 (1986-02-01), Pollack et al.
patent: 4707213 (1987-11-01), Mohr et al.
patent: 4994637 (1991-02-01), Fang et al.
patent: 5047605 (1991-09-01), Ogden

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