Rotary actuator

Details Rotary actuator Rotary actuator

1980-05-08

1982-02-02

Hershkovitz, Abraham

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

Element extends through working member portion

308174, F01B 300

Patent

active

043133673

ABSTRACT:
A helical rotary actuator is provided with end bearings which overlie or wrap around the cylinder wherein the piston of the rotary helical actuator is linearly reciprocated. The wrapping around of the bearing reduces the length of the actuator and also increases the circumferential bearing surface for carrying higher radial loads within the confined length of the actuator. In one embodiment, inner and outer radial bearings are provided with the outer bearing wrapping around and the inner bearing supporting the output shaft of the actuator through a large diameter collar for greatly increasing the radial load-carrying capacity of the actuator.

REFERENCES:
patent: 1056616 (1913-03-01), Wright
patent: 2948263 (1960-08-01), Royer
patent: 3198539 (1965-08-01), McMullen
patent: 3213923 (1965-10-01), Richter
patent: 3255806 (1966-06-01), Meyer
patent: 3388603 (1968-06-01), Clark
patent: 3393610 (1968-07-01), Aarvold
patent: 3613169 (1971-10-01), Ziegler
patent: 3791263 (1974-02-01), Walter
patent: 3834283 (1974-09-01), Beichel

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