Control apparatus for double acting hydraulic cylinder units

Details Control apparatus for double acting hydraulic cylinder units Control apparatus for double acting hydraulic cylinder units

1985-06-05

1990-05-29

Jordan, Charles T.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

60459, 60461, 60486, F16D 3102

Patent

active

049284878

ABSTRACT:
A cylinder unit is supplied with pressurized fluid from a hydraulic machine which is variable in speed and/or displacement. The machine may be operated as a pump and as a motor to increase the pressure or, respectively, to decrease the pressure so that the piston of the cylinder unit may be actuated in both directions and, furthermore, the brake energy is recovered by the machine when the piston is driven through an external load. This results in an increased efficiency of the control apparatus for the cylinder unit avoiding any problems arising from heat.

REFERENCES:
patent: 3574999 (1971-04-01), Nectoux
patent: 3824896 (1971-11-01), Tull, III
patent: 4118149 (1978-10-01), Hagberg
patent: 4240255 (1980-12-01), Benilan

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