Pressure modulation device for hydraulic systems

Details Pressure modulation device for hydraulic systems Pressure modulation device for hydraulic systems

1986-04-07

1987-04-14

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

192109F, F16K 3112

Patent

active

046570420

ABSTRACT:
A pressure modulation valve, for supplying a smooth pressure increase, having desired characteristics, to a load port in a hydraulic control system. A single spool provides initial and final bypass phases of rapid pressure rise, and an intermediate modulated phase. The pressure characteristics can be adjusted by varying the loads and openings.

REFERENCES:
patent: 3583422 (1971-06-01), Dach
patent: 3722646 (1973-03-01), Oguma
patent: 3828807 (1974-08-01), Dawes
patent: 4086994 (1978-05-01), Hirosawa
patent: 4265346 (1981-05-01), Emmadi

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