Power plants – Pressure fluid source and motor – Pulsator
Patent
1999-01-13
2000-06-27
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Pulsator
60582, F15B 700
Patent
active
060792094
ABSTRACT:
A hydraulic power conversion device includes a main oil container having an inlet for supplementing hydraulic oil, a pair of hydraulic pumps connected to the main oil container, a motor drivingly connected with the hydraulic pumps, a twin-circuitry hydraulic cylinder mechanism including a first hydraulic cylinder, a first piston, a piston rod, a sealer, a second piston, a high pressure leakage proof packing and a second hydraulic cylinder, the first hydraulic cylinder having same length as the second hydraulic cylinder but having a smaller diameter than the second hydraulic cylinder, the first hydraulic cylinder being connected with the second hydraulic cylinder by screws, the sealer being fitted between the first and second hydraulic cylinders to form two regions, the second hydraulic cylinder having an inlet provided with a first check valve only allowing hydraulic oil to flow into the second hydraulic cylinder and an outlet provided with a second check valve only allowing hydraulic oil to flow out of the second hydraulic cylinder, an oil retrieving container connected with the inlet of the second hydraulic cylinder, and a hydraulic pressure storage trough connected with the outlet of the second hydraulic cylinder.
REFERENCES:
patent: 4552414 (1985-11-01), Fujii et al.
patent: 4843819 (1989-07-01), Leiber
patent: 4848848 (1989-07-01), Klein
patent: 5161449 (1992-11-01), Everett, Jr.
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