Hydraulic circuit with dual tank system and method for using the

Details Hydraulic circuit with dual tank system and method for using the Hydraulic circuit with dual tank system and method for using the

1974-09-03

1976-06-01

Cline, William R.

Fluid handling

Systems

Closed circulating system

137571, 137575, 60477, 60494, E03B 707

Patent

active

039601749

ABSTRACT:
A hydraulic circuit comprises a first tank elevated above a second tank and openly communicating therewith by a conduit adapted to continuously maintain the second tank at full capacity with a hydraulic fluid. The hydraulic fluid is pumped out of the second tank and to a work system wherefrom it is recircuited back through a filtering system, retained in the first tank. Upon malfunctioning of the filtering system to prevent the egress of hydraulic fluid therethrough, the increased pressure level of the recircuited hydraulic fluid will function to open a directional control check valve in the second tank to by-pass the conduit normally communicating hydraulic fluid from the first tank to the second tank.

REFERENCES:
patent: 2059716 (1936-11-01), Swinburne
patent: 2211753 (1940-08-01), Leopold
patent: 2287396 (1942-06-01), Roth
patent: 2545445 (1951-03-01), Chatterton
patent: 3190321 (1965-06-01), Robinson
patent: 3214023 (1965-10-01), Donner
patent: 3269541 (1966-08-01), Neely
patent: 3604205 (1971-09-01), Geselbracht et al.
patent: 3626971 (1971-12-01), Joel

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