Induction heating apparatus for injection molding machine

Details Induction heating apparatus for injection molding machine Induction heating apparatus for injection molding machine

1989-02-22

1990-07-10

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1075, 219 1079, 4251748R, 425549, 264 27, H05B 640

Patent

active

049408704

ABSTRACT:
The present invention provides a induction heating coil bobbin used to heat the hot runner in an injection molding machine, the bobbin comprising a substantially cylindrical body made of a metal or alloy having its low magnetic permeability, the bobbin body having at least one slit formed therein, the slit extending on the bobbin body between the opposite ends thereof through a predetermined length.

REFERENCES:
patent: 2436993 (1948-03-01), Fisher, Jr.
patent: 3051988 (1962-09-01), Baermann
patent: 3472987 (1966-08-01), Viart
patent: 3562472 (1971-02-01), Cannon et al.
patent: 3702368 (1972-11-01), Hukin
patent: 4195214 (1980-03-01), Gerber
patent: 4549051 (1985-10-01), Ness
patent: 4610017 (1986-09-01), Bathie et al.
patent: 4726751 (1988-02-01), Shibata et al.

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