Valve mechanism for automatic control of a number of fluid motor

Details Valve mechanism for automatic control of a number of fluid motor Valve mechanism for automatic control of a number of fluid motor

1973-12-26

1976-01-27

Cohan, Alan

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

91412, 91414, 137596, 13759612, E02F 328, F15B 1306

Patent

active

039347427

ABSTRACT:
A spool type control valve mechanism for use with backhoes, front end loaders, and other apparatus having a number of hydraulic cylinder driven work performing members whose motions must be coordinated in order to produce a prescribed work operation. Pressure compensating valve means which provides for regulation of the rate of flow to the cylinders of pressure fluid from a common supply passage also functions automatically to control connection of the cylinders with the supply passage in accordance with the work load on the cylinders, at times when the valve spools of all the control valves are in their working positions.

REFERENCES:
patent: 3145734 (1964-08-01), Lee et al.
patent: 3225781 (1965-12-01), Kruger et al.
patent: 3455210 (1969-07-01), Allen
patent: 3465519 (1969-09-01), McAlvay et al.
patent: 3488953 (1970-01-01), Haussler
patent: 3602104 (1971-08-01), Stremple
patent: 3718159 (1973-02-01), Tennis
patent: 3722543 (1973-03-01), Tennis
patent: 3782404 (1974-01-01), Hodgson
patent: 3807447 (1974-04-01), Masuda
patent: 3811471 (1974-05-01), Murase et al.
patent: R26338 (1968-01-01), Allen

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