Unbalanced hydraulic amplifier valve assembly

Details Unbalanced hydraulic amplifier valve assembly Unbalanced hydraulic amplifier valve assembly

1981-06-17

1985-05-14

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91378, F15B 700

Patent

active

045164703

ABSTRACT:
An unbalanced hydraulic valve assembly includes a first plunger element slidably and transversely displaceably received in a second plunger element wth a loose fit; a work chamber; a pressure supply conduit provided in the valve assembly for introducing pressurized hydraulic fluid thereinto; a control port arrangement in one of the plunger elements in an asymmetrical relationship relative to the circumference of the plunger elements. The control port arrangement permits or blocks flow from the pressure supply conduit to the work chamber dependent upon the relative axial position between the plunger elements. A force transmitting member is supported in the second plunger element for displacement transversely to the direction of relative axial motion between the plunger elements. The force transmitting member engages the first plunger element and is exposed to pressurized hydraulic fluid for pressing the first plunger element against an inner wall face of the axial bore provided in the second plunger element. The first plunger element and the second plunger element are free from annular seals between themselves.

REFERENCES:
patent: 1105209 (1913-03-01), Sauchereau
patent: 1707125 (1929-03-01), Loffler
patent: 2792019 (1957-05-01), Lieser
patent: 3354788 (1967-11-01), Garrison
patent: 3532027 (1969-10-01), MacDuff
patent: 3899890 (1975-08-01), Adams
Automobiltechnische Zeitschrift, 75, (1973)7, pp. 261-263.

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