Actuators

Details Actuators Actuators

1985-07-26

1987-03-24

Staab, Lawrence

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74785, F16H 1902, F16H 146

Patent

active

046515801

ABSTRACT:
An electric motor driven actuator comprises an electric motor whose rotation causes rotation of a planet carrier carrying planet gears which engage an annulus gear on the inside of a stationary ring. A pinion transmits rotation of the planet carrier to further planet gears which are carried on another planet carrier and engage another annulus inside an axially movable ring. This ring can be moved axially by an armature in dependence on energization of an electro magnetic coil within a housing. When the ring moves towards the first-mentioned, stationary, ring, face teeth which it carries engage face teeth on the latter ring, and the axially movable ring is thus held stationary. Its planet carrier thus rotates and a coupling rotates a shaft which, via a tape, transmits drive to an output cable. When the coil is de-energized rings, separate again and the axially movable ring is no longer held stationary and its planet carrier no longer rotates.

REFERENCES:
patent: 2195400 (1940-04-01), Arens
patent: 2366739 (1945-01-01), McCoy
patent: 2482568 (1949-09-01), Werner
patent: 2564271 (1951-08-01), Millns
patent: 2682789 (1954-07-01), Ochtman
patent: 3115204 (1963-12-01), Dence
patent: 3190414 (1965-06-01), Maurer et al.
patent: 3550469 (1970-12-01), Morse
patent: 3762523 (1973-10-01), Thorsby
patent: 3872742 (1975-03-01), States
patent: 4347762 (1982-09-01), Holdeman

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