Protected refrigerator compressor motor systems and motor protec

Details Protected refrigerator compressor motor systems and motor protec Protected refrigerator compressor motor systems and motor protec

1985-11-04

1987-12-15

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 29, 361 31, 361 22, 361105, 361106, 337102, 337107, H02H 308, H02H 504

Patent

active

047137177

ABSTRACT:
A motor protector having a thermostat metal element thermally coupled to an electrical motor in a refrigerator compressor motor system has a heater responsive to motor current thermally coupled to the thermostat metal element and has an improved component arrangement to provide locked rotor and ultimate trip protection for the motor without requiring calibration of the operating temperature for the protector after assembly or after incorporation in the motor system.

REFERENCES:
patent: 2298137 (1942-08-01), Lee
patent: 2768342 (1956-08-01), Vaughan et al.
patent: 3452313 (1969-06-01), Perry
patent: 3538478 (1970-11-01), D'Entremont
patent: 3579167 (1971-05-01), Grable
patent: 3656079 (1972-04-01), Lee
patent: 3858140 (1974-12-01), Hancock
patent: 4039992 (1977-08-01), Givler
patent: 4365225 (1982-12-01), Olsen et al.
patent: 4533894 (1985-08-01), Bishop

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