Rotating servomotor apparatus

Details Rotating servomotor apparatus Rotating servomotor apparatus

1984-05-22

1985-07-09

Kyle, Deborah L.

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

With means for selectively changing the speed or force...

91464, 91466, 92122, 13762569, F15B 1304, F16K 324

Patent

active

045274614

ABSTRACT:
A rotating servomotor apparatus for use in rotating guide vanes in a hydraulic machine, wherein for the purpose of suppressing occurrence of flow-induced vibrations, there is provided a bearing to support wicket gates, a rotating servomotor which includes a movable spindle projecting in the axial direction and which has a plurality of movable partition members, a cylinder having a plurality of stationary partition members disposed around the spindle, and a plurality of compartments partitioned between the movable partition members and the stationary partition members; and a first distributing valve connected to one side of plural compartments within the cylinder of the rotating servomotor means, a second distributing valve connected to the other side of plural compartments within the cylinder of the rotating servomotor means, wherein the respective distributing valves have valve piston members sized and arrangeable with respect to fluid inlets and outlets to define a neutral position in which fluid is supplied only into selected of plural compartments and is drained only from the non-selected compartments to exert continuously a balanced pressure against the movable spindle.

REFERENCES:
patent: 3062192 (1962-11-01), Webb
patent: 3195570 (1965-07-01), Runkle
patent: 3563272 (1971-02-01), Mercier
patent: 3773081 (1973-11-01), Venable et al.
patent: 4022425 (1977-05-01), Govzman et al.
patent: 4155535 (1979-05-01), Seamone

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