Electric motor control system

Details Electric motor control system Electric motor control system

1977-01-05

1980-09-30

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

34 48, 68 12R, 310 68C, 318334, 318473, 318516, H02B 700

Patent

active

042258120

ABSTRACT:
An electric motor of predetermined voltage rating is connected to an electric current supply source higher in voltage than the rated motor voltage in series with a voltage dropping resistor controlled by a thermal relay responsive to motor temperature. The series circuit is regulated by the relay to include or exclude the resistor thereby to maintain motor temperature at normal rated value.

REFERENCES:
patent: 2157417 (1939-05-01), Kneisley
patent: 2369986 (1945-02-01), Schaefer
patent: 2613343 (1953-10-01), Ober
patent: 2630553 (1953-03-01), Seely
patent: 2735023 (1956-02-01), Kozinski
patent: 3130326 (1964-04-01), Moore
patent: 3241026 (1966-03-01), Andrich
patent: 3255672 (1966-06-01), Wantz et al.
patent: 3638090 (1972-01-01), Ebbinge
Lytel, A. Electronic Motor Control, Photo Fact Publication, pp. 20-21. Nov. 64.

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