Rotary actuator with a modified seal structure

Details Rotary actuator with a modified seal structure Rotary actuator with a modified seal structure

1994-10-28

1996-02-20

Denion, Thomas E.

Expansible chamber devices

Oscillating working member or cylinder therefor

Oscillatory shaft with radially extending vane

92121, F01C 900

Patent

active

054920515

ABSTRACT:
Rotary actuator, including a cylinder and motor shaft, as well as end caps which define a work chamber, whereby a number of ribs on the inside surface of the cylinder and the same number of vanes on the motor shaft divide the working area into work chambers which are alternately supplied with hydraulic medium, and seal units inside grooves in the ribs and vanes which hydraulically separate the work chambers from one another, characterized by the fact that there is a space between the seals and the side walls of the grooves which is offset by an additional volume.

REFERENCES:
patent: 2966144 (1960-12-01), Self
patent: 2984221 (1961-05-01), Van Voorhees
patent: 3023741 (1962-03-01), O'Connor
patent: 3030934 (1962-04-01), Herbst
patent: 3207047 (1965-09-01), O'Connor
patent: 3215046 (1965-11-01), Drake

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