Electrical actuated multi-speed drive apparatus

Details Electrical actuated multi-speed drive apparatus Electrical actuated multi-speed drive apparatus

1992-07-27

1994-02-15

Braun, Leslie A.

192 clutches and power-stop control

Clutches

Operators

192 18B, 192 18A, 74661, F16D 6706, F16H 3706

Patent

active

052858790

ABSTRACT:
There is provided a two-speed drive unit for a motor drive, the motor drive having a housing and a main rotatable member. The two-speed drive unit comprises a two-speed drive housing secured to the motor drive housing and a secondary motor secured to the two-speed drive housing. The driveshaft of the secondary motor extends into the two-speed drive housing. The two-speed drive unit further comprises a gear train operably associated with both the secondary motor driveshaft and a clutch, the clutch being disposed between the gear train and the rotatable member of the main motor drive for engagement and disengagement of the gear train with the rotatable member of the main motor drive. The clutch is normally engaged by a plurality of coil springs and disengaged by the action of an AC voltage coil. Control means are provided which are capable of storing predetermined positions of the motor drive at which engagement or disengagement of the two-speed drive is desired.

REFERENCES:
patent: 4125178 (1978-11-01), Monks
patent: 4494635 (1985-01-01), Sommer
patent: 4506772 (1985-03-01), Sommer
patent: 4592251 (1986-06-01), Mason
patent: 4616739 (1986-10-01), Sommer
patent: 4765448 (1988-08-01), Sommer
patent: 4921078 (1990-05-01), Sommer
patent: 5172798 (1992-12-01), Mabee
patent: 5195623 (1993-03-01), Sommer

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