Electric gear motor with epicycloidal reduction and automatic br

Details Electric gear motor with epicycloidal reduction and automatic br Electric gear motor with epicycloidal reduction and automatic br

1993-11-02

1995-09-05

Marmor, Charles A.

Planetary gear transmission systems or components

Electric or magnetic drive or control

With electric or magnetic controlled brake

475 4, 475269, 160310, F16H 364

Patent

active

054474779

ABSTRACT:
An electric gear motor with reduction gears and automatic brake for shutters, wherein an emergency control is provided to allow the shutter to be manually maneuvered in the event of motor brake down or loss of power. A toothed ring is normally retained in a non-rotatable position relative to the reduction gears under the influence of a yieldable leg of a spring pin. The yieldable leg is movable away from the ring to permit the ring to rotate with the reduction gears and free of a motor drive shaft in the event the motor fails to activate in a normal manner thus enabling the shutters to be manually operated.

REFERENCES:
patent: 2670065 (1954-02-01), Stevens, Jr.
patent: 3921264 (1975-11-01), Madonian et al.
patent: 5203392 (1993-04-01), Shea

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