Electric clutch and brake

Details Electric clutch and brake Electric clutch and brake

1997-09-29

2000-04-11

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Operators

192 81C, F16D 1900, F16D 1308

Patent

active

060478055

ABSTRACT:
A combination clutch and brake uses a helically wound spring attached to a pulley at one edge and magnetically drawn to a rotor at a second edge. In a relaxed state, the spring presses against an outer field cup locking the pulley against that cup. In a torsion state caused by the magnetic attraction between the rotor and the spring, the spring decreases in diameter to compress a frictional wedge inward against the pulley and rotor causing them to turn as one.

REFERENCES:
patent: 3095071 (1963-06-01), Mason
patent: 3149705 (1964-09-01), Shoquist
patent: 3149706 (1964-09-01), Mason et al.
patent: 3171523 (1965-03-01), Shoquist
patent: 3177996 (1965-04-01), Bates
patent: 3642106 (1972-02-01), Baer
patent: 3685622 (1972-08-01), Baer et al.
patent: 4271948 (1981-06-01), Yew
patent: 5967274 (1999-10-01), Leone et al.

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