Hydrostatic transmission mixed loop system

Details Hydrostatic transmission mixed loop system Hydrostatic transmission mixed loop system

1975-03-03

1976-06-15

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

With means purging, cleaning or separating undesirables from...

60456, 60461, 60464, 60465, 60466, F15B 1518

Patent

active

039628728

ABSTRACT:
A mixed loop hydrostatic transmission circuit for use principally with orbit, gear, vane and other non-piston type motors, which generate contaminants making them less suitable for applications using conventional closed loop hydrostatic transmission circuits. The mixed loop hydrostatic transmission drive retains the precise load control and high efficiency of a closed loop system, while introducing the benefits of contamination control of open loop hydrostatic transmission circuits. While maintaining the speed of the motor proportional to the output flow of the pump, both in positive and regenerative modes of operation, the full flow of fluid is diverted from the motor to the reservoir, while the full flow of fluid, required by the pump, is supplied directly from the system reservoir.

REFERENCES:
patent: 2059155 (1936-10-01), Thoma
patent: 2157707 (1939-05-01), Keel
patent: 2927429 (1960-03-01), Carlson
patent: 2961829 (1960-11-01), Weisenbach
patent: 3625007 (1971-12-01), Herndon
patent: 3866421 (1975-02-01), Kersten et al.

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