Motors: expansible chamber type – With motive fluid valve – Unitary inlet and exhaust valve for single working chamber
Patent
1982-04-29
1984-08-07
Michalsky, Gerald A.
Motors: expansible chamber type
With motive fluid valve
Unitary inlet and exhaust valve for single working chamber
91388, 91447, 91451, 13759613, 1376253, 13762569, F15B 13042
Patent
active
044636601
ABSTRACT:
A multi-way valve for precisely controlling supplying pressure to a load device, comprising a housing and a control slide slidably mounted in the housing. The housing has annular, internal passages axially spaced along the length of the housing, with first and fifth passages located on opposite sides of second, third and fourth passages in fluid communication with a supply tank, the load device and a fluid pressure source, respectively. The control slide is slidably mounted in the passages and has parts axially spaced along the slide and axially separated by annular grooves, and an internal, longitudinal passages. First and second springs are coupled to opposite ends of the slide and bias the slide to a middle, rest position. First and second control chambers are located in the housing adjacent the slide opposite ends for applying varying pressures to the slide opposite ends. One of the annular grooves on the shaft controls connections of the load device with the supply tank and fluid pressure source and has restricting means for reducing the tendency of the slide to reciprocate.
REFERENCES:
patent: 3488953 (1970-01-01), Haussler
patent: 4040438 (1977-08-01), Wilke
patent: 4051868 (1977-10-01), Andersen
patent: 4242942 (1981-01-01), Bartholomaus et al.
patent: 4313467 (1982-02-01), Lang
Mucheyer Norbert
Schulte Heinz
Mannesmann Rexroth GmbH
Michalsky Gerald A.
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