Hydraulic transmission

Details Hydraulic transmission Hydraulic transmission

1974-09-25

1976-08-03

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of...

60445, 60465, 60486, F15B 1309

Patent

active

039721876

ABSTRACT:
A first pump and a second pump have respective mechanical inputs and are operative when the mechanical inputs are driven at constant speed for pumping fluid at an adjustable volumetric flow rate and at a constant non-adjustable volumetric flow rate, respectively, the maximum volumetric flow rate of the first pump being at least as great as that of the second pump. Connecting conduits connect the first pump in hydraulic circuit with an hydraulic consumer. An adjusting mechanism is provided for adjusting the volumetric flow rate of the first pump. A control arrangement is provided for bringing the second pump into and out of hydraulic circuit with the consumer in dependence upon the operation of the adjusting mechanism.

REFERENCES:
patent: 3734225 (1973-05-01), Kobald et al.
patent: 3846982 (1974-11-01), Rometsch et al.
patent: 3859790 (1975-01-01), Bacquie et al.

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