Rotary hydraulic actuator including groove-like fluid supply pat

Details Rotary hydraulic actuator including groove-like fluid supply pat Rotary hydraulic actuator including groove-like fluid supply pat

1997-04-16

1998-11-24

Denion, Thomas E.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

92125, 92164, 91462, F01B 2526

Patent

active

058393463

ABSTRACT:
A rotary hydraulic actuator including a sealed vessel including brackets and a casing, a partition vane attached to a shaft supported by the brackets for dividing an inside of the sealed vessel into a first pressure chamber and a second pressure chamber and pivoting the shaft by a pressure difference between the first and the second pressure chambers, suction and exhaust hydraulic ports and a drain port installed to the casing, a hydraulic control valve mounted to the casing for conducting a hydraulic control along with the suction and exhaust hydraulic ports and the drain port, groove-like hydraulic pressure supply paths installed to a face of one of the brackets in contact with the casing for communicating the first pressure chamber and the second pressure chamber respectively to the suction and exhaust hydraulic ports and a groove-like drain path installed to a face of other one of the brackets in contact with the casing for communicating to the drain port.

REFERENCES:
patent: 4099450 (1978-07-01), Mase
patent: 4177713 (1979-12-01), Lewis et al.
patent: 4882977 (1989-11-01), Himeno et al.
patent: 4889035 (1989-12-01), Goodnow
patent: 5228289 (1993-07-01), Norton

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