Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – One path includes restriction
Patent
1991-10-25
1992-09-01
Michalsky, Gerald A.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
One path includes restriction
91446, 91449, 91531, 137312, 1374545, 137501, F15B 1302, F15B 1308, F16K 31122
Patent
active
051429632
ABSTRACT:
A load-referenced, pressure reducing valve, and a system which incorporates one or more of such valves provide needed response to rapidly changing hydraulic system load demands which are experienced with automatic control systems. The valve provides rapid response for pressure regulation by providing the load pressure to one side of the valve so that immediate, load referenced valve adjustment occurs instantly upon change of load conditions at a system load, and pressure regulation begins immediately without need for fluid flow.
REFERENCES:
patent: 2655940 (1953-10-01), Jackson
patent: 4422470 (1983-12-01), Jackson et al .
Catalog sheets from Parker Fluidpower, including pp. 1, 8-9, PC-148 to 149 and PC-161 to 162, all relating to series PR pressure reducing valves (Undated).
Catalog sheets for Fluid Controls, Inc. pressure reducing valves, p. PC-14 (Undated).
Catalog sheets for Modular Controls compensator spool elemnt, drawing No. PCS 3-XXX-OX-XX (2 pages) (Undated).
Scott Equipment Company catalog sheets for proportional pressure control valves, VP Series 3 and 06, pp. 230-232 (Undated).
Continental Hydraulics catalog sheets for EP35 M electro-hydraulic proportional valves, (four sheets) Dec., 1979.
Sun catalog sheets for pressure reducing and reducing/relieving valves, pp. 3.01, 2.10 and 3.11 (Undated).
Spectra-Physics catalog for LASERPLANE Motorgrader Control System, 1988.
Michalsky Gerald A.
Spectra-Physics Laserplane, Inc.
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