Failsafe rotary actuator

Details Failsafe rotary actuator Failsafe rotary actuator

1982-09-30

1988-05-10

Braun, Leslie A.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74785, 74801, F16H 3706

Patent

active

047427302

ABSTRACT:
A failsafe rotary actuator having irreversible dual load paths between input and output members thereof is comprised of an input shaft journalled for rotation within a housing for the actuator, first and second sun gears secured in spaced relationship along and to the input shaft for rotation therewith, planet gears disposed for orbital rotation with and circulation about the sun gears, first and second fixed ring gears disposed for independent engagement with the planet gears, and first and second output gears disposed for independent driving contact with the planet gears; wherein a first load path is established between the first sun gear and the first output gear across the planet gears in cooperative engagement thereof with the first fixed ring gear, and a second load path is established between the second sun gear and the second output gear across the planet gears and cooperative engagement thereof with the second fixed ring gear.

REFERENCES:
patent: 284274 (1883-09-01), Caldwell
patent: 2369867 (1945-02-01), Sprake
patent: 2966808 (1961-01-01), Gradin
patent: 3008355 (1961-11-01), Grudin
patent: 3015973 (1962-01-01), Doerries
patent: 3203275 (1965-08-01), Hoover
patent: 3640150 (1972-02-01), Leiner et al.

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