Proportioning valve with pressure port communicating with steppe

Details Proportioning valve with pressure port communicating with steppe Proportioning valve with pressure port communicating with steppe

1982-03-23

1984-03-27

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

137102, 303 28, B60T 1518

Patent

active

044389809

ABSTRACT:
A pressure reducing valve is constricted with a stepped piston affording a pressure responsive area on one side responsive to the pressure at an output port and a smaller pressure responsive area on the other side, contained between the seals of the two piston diameters and responsive to the pressure at an input port, the piston carrying a self lapping valve assembly connected via a passage to the smaller area for controlling the pressure at the output port in relation to that at the input port.

REFERENCES:
patent: 3002520 (1961-10-01), Morse
patent: 3259439 (1966-07-01), Bueler
patent: 3302982 (1967-02-01), Pekrul
patent: 3429621 (1969-02-01), Bueler
patent: 3718372 (1973-02-01), Gruner et al.
patent: 3769997 (1973-11-01), Hardwick et al.
patent: 4145089 (1979-03-01), Reinecke et al.
patent: 4300805 (1981-11-01), Reinecke

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