Magnetic hysteresis clutch

Details Magnetic hysteresis clutch Magnetic hysteresis clutch

1994-08-25

1997-02-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 78, H02K 4904, H02K 710, H02P 1500

Patent

active

056001940

ABSTRACT:
A magnetic hysteresis clutch comprises a rotor supporting a ferromagnetic hysteresis material and a rotary magnetic inductor capable of inducing a magnetic field in the ferromagnetic hysteresis. The magnetic inductor and the ferromagnetic hysteresis clutch is constructed so that an increase in the magnetization losses in the ferromagnetic material, which accompanies an increase in the slip between magnetic inductor and the ferromagnetic hysteresis, leads to a reversible increase in the temperature of the ferromagnetic hysteresis material, and thereby to a reversible decrease in magnetization of the ferromagnetic material which is sufficient to bring about a desired decrease in the transmitted torque. Thus it is possible to provide a magnetic hysteresis clutch in which the transmitted torque reversibly decreases when the slip increases.

REFERENCES:
patent: 2683825 (1954-07-01), Georgeff
patent: 3700941 (1972-10-01), Duncan
patent: 3848852 (1974-11-01), Therkildsen
patent: 3868852 (1975-03-01), Janssen
patent: 3915433 (1975-10-01), Therkildsen
patent: 4036339 (1977-07-01), Kikuchi
patent: 4227680 (1980-10-01), Hrescak
patent: 4777397 (1988-10-01), Parshall
patent: 4876471 (1989-10-01), Lacour
patent: 5204572 (1993-04-01), Ferreira

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