Electric and hydraulic servomechanism controlling device

Details Electric and hydraulic servomechanism controlling device Electric and hydraulic servomechanism controlling device

1975-05-15

1977-10-11

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

74869, 91448, 91451, 91459, 91461, 13759612, 13762564, F15B 1108, F15B 13043

Patent

active

040529304

ABSTRACT:
An electric and hydraulic servomechanism controlling device comprises a pressure governor valve, a hydraulic servomechanism actuated by the supply of the line pressure regulated by said pressure governor valve, and a change-over valve for shifting an oil passage that connects said pressure governor valve and hydraulic servomechanism. The change-over valve serves also as a pressure reducing valve thereby reducing not only the capacity but also the size of the necessary solenoid.

REFERENCES:
patent: 2775254 (1956-12-01), Stanbury
patent: 3455210 (1969-07-01), Allen
patent: 3621735 (1971-11-01), Lemieux
patent: 3646851 (1972-03-01), Mohri
patent: 3727487 (1973-04-01), Forster et al.
patent: 3771424 (1973-11-01), Allen et al.
patent: 3856047 (1974-12-01), Takayama

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