Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1994-06-23
1997-01-07
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219483, 219481, 219517, 219506, 337290, H05B 102
Patent
active
055913660
ABSTRACT:
An injection molding heater system for heating molding resins or plastics includes a plurality of heaters for heating resin wherein each of the heaters is positioned adjacent a nozzle or manifold. The system also includes an electrical circuit which is connected with the heaters and carries electricity from a power source to each of the heaters in order to energize the heaters. A plurality of circuit breaking devices are incorporated in the circuit for discontinuing the flow of electricity through each of the electrical circuits for preventing circuit damage in case of overcurrent, surges or the like. At least one circuit breaker is positioned in each of the electrical circuits between the power source and each of the heaters.
REFERENCES:
patent: 3881091 (1975-04-01), Day
patent: 4447712 (1984-05-01), Covillion
patent: 4459465 (1984-07-01), Knight
patent: 4940179 (1990-07-01), Soni
patent: 5023430 (1991-06-01), Brekkestran et al.
patent: 5298300 (1994-03-01), Hosoi et al.
Jenko Edward J.
Schmidt Harald
Husky Injection Molding Systems Ltd.
Paschall Mark H.
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