Fluid handling – Systems – Multi-way valve unit
Patent
1996-06-27
1999-02-09
Rivell, John
Fluid handling
Systems
Multi-way valve unit
1376275, 137596, 137636, 251 77, 251297, F16K 1116
Patent
active
058681663
ABSTRACT:
A pressure regulating valve usable in combination with a hydraulic steering system has a spring mechanism axially disposed between a pair of axially aligned valve spools. Movement of the spring mechanism in a first direction resiliently moves one of the valve spools to a position for communicating an inlet port with a control port and regulating the pressure in the the control port so that the pressure is proportional to the degree of movement of the spring mechanism. Conversely, movement of the spring mechanism in a second direction resiliently moves the other valve spool to a position for communicating the inlet port with another control port and regulating the pressure in the other control port so that the pressure is proportional to the degree of movement of the spring mechanism.
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patent: 5558125 (1996-09-01), Sell
Burrows J. W.
Caterpillar Inc.
Grant John W.
Rivell John
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