Controller for automatically stopping motor in response to overc

Details Controller for automatically stopping motor in response to overc Controller for automatically stopping motor in response to overc

1992-07-16

1993-07-20

Wysocki, Jonathan

Electricity: motive power systems

Limitation of motor load, current, torque or force

361 31, 318471, H02P 300

Patent

active

052296954

ABSTRACT:
An automatic controller for use with a motor. A switch interconnects the motor and a power source for selectively establing an electrical connection therebetween. A relay coil is connected to the motor. When the motor is connected to the power source via the switch, the relay coil latches the switch in a steady connecting state. When increased current overdraw of the motor is sensed, a current-limiting thermistor limits or interrupts the current flow across the relay coil, to set the switch to a disconnect state and to cause the motor to stop.

REFERENCES:
patent: 4475138 (1984-10-01), Middleman et al.
patent: 4656407 (1987-04-01), Burney
patent: 4689533 (1987-08-01), Yans
patent: 4739232 (1988-04-01), Ishimoto
patent: 4761592 (1988-08-01), Dissing et al.
patent: 4983897 (1991-01-01), Tennant
patent: 4984123 (1991-01-01), James
patent: 5012168 (1991-04-01), Dara et al.

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