Electromagnetic helical spring clutch

Details Electromagnetic helical spring clutch Electromagnetic helical spring clutch

1980-07-11

1982-12-21

Krizmanich, George H.

192 clutches and power-stop control

Clutches

Automatic

192 81C, 192 84T, F16D 2710

Patent

active

043644600

ABSTRACT:
A magnetically actuated clutch in which a helical spring is carried by an input clutch member with portions surrounding a relatively rotatable output clutch member. An electromagnet is positioned with its poles lightly engaging the surrounding spring portions at circumferentially spaced locations, while either the spring or the output clutch member or both are formed of a magnetically permeable material to complete a magnetic circuit. Energizing the electromagnet causes the poles to clamp the spring to retard its rotation with the input member, thereby causing the spring to wrap down on the output clutch member and engage the clutch.

REFERENCES:
patent: 3349880 (1967-10-01), Baer
patent: 3974902 (1976-08-01), Wahlstedt
patent: 4326613 (1982-04-01), Houlberg

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