Winch with shut-off load limiter

Details Winch with shut-off load limiter Winch with shut-off load limiter

1989-04-20

1989-10-10

Ro, Bentsu

Electricity: motive power systems

Limitation of motor load, current, torque or force

318433, H02P 700

Patent

active

048734748

ABSTRACT:
A winch powered by an electric motor. A steel torroid determines the magnetic field generated by the current demand of the motor. A voltage sensitive hall effect switch is provided with a voltage input. The magnetic field detected by the steel torroid is also provided to the hall effect switch. Upon receiving the combined input of magnetic field and voltage, the hall effect switch is activated to shut off the motor. A potentiometer varies the voltage input to the hall effect switch to vary the demand of magnetic field necessary to activate the shut off function.

REFERENCES:
patent: 3965407 (1976-06-01), Stoner
patent: 4517506 (1985-05-01), Heinrich et al.

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