Fluid operated system

Details Fluid operated system Fluid operated system

1983-11-04

1984-12-11

Garrett, Robert E.

Motors: expansible chamber type

With motive fluid valve

Inlet fluid supplemented by controlled fluid pressurized in...

91427, 91437, 91445, 91450, 91461, 91526, 91527, F15B 1306

Patent

active

044871066

ABSTRACT:
Fluid control systems frequently eliminate use of fluid operated jack protecting relief valves because additional visibility blocking and damage prone conduits are required to connect the relief valves to the reservoir. A fluid operated system having a controlling valve, a selecting valve, a fluid operated jack, a relief valve, a reservoir and a bypass valve is provided to controllably connect the relief valve to other portions of the system in response to the position of controlling valve and selecting valve. Therefore, no additional conduits are required to connect the relief valve to the reservoir and thus the problems of reduced visibility, premature conduit leakage and conduit damage are eliminated. The fluid control system is particularly suited for use in a work vehicle such as a lift truck having a lift mast.

REFERENCES:
patent: 2944524 (1960-07-01), Brandstadter et al.
patent: 3194261 (1965-07-01), Tennis
patent: 3620129 (1971-11-01), Fruehauf
patent: 3795110 (1974-03-01), Kobelt
patent: 3893572 (1975-07-01), Axelsson et al.
patent: 3960059 (1976-06-01), Schexnayder
patent: 4228818 (1980-10-01), Nelson
patent: 4313633 (1982-02-01), Muntjanoff et al.
patent: 4358242 (1982-11-01), Davies

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