Motors: expansible chamber type – Relatively movable working members with one having motive... – With means interconnecting working members to cause relative...
Patent
1978-09-21
1980-01-08
Maslousky, Paul E.
Motors: expansible chamber type
Relatively movable working members with one having motive...
With means interconnecting working members to cause relative...
91415, 91467, F01B 100, F15B 1517
Patent
active
041822196
ABSTRACT:
The invention relates to a hydraulic control system for a vehicle steering system or the like. The system includes two hydraulic cylinders each having a piston and a piston rod extending through one end thereof with the rod side of each piston having a smaller pressure area than the opposite side thereof. The pistons are mechanically interconnected by their piston rods. Each of the cylinders has first and second ports respectively at the nonpiston and piston ends thereof. There is a source of fluid pressure and an exhaust tank and a separate valve unit for each of the cylinders. A valve operating unit includes a steering wheel for operating the valve units in unison. The valve units have passages arranged so that for turning in either direction the first and second ports of one cylinder and the second port of the other cylinder are connected to the pressure source. At the same time the first port of the other cylinder is connected to said exhaust tank. The system includes metering units and the valve passages are arranged so that the involved metering unit is in series with the pressure source for either direction of turning. The valve operating unit includes a pair of shafts and a steering wheel for turning the shafts.
REFERENCES:
patent: 2763990 (1956-09-01), Mercier
patent: 2859592 (1958-11-01), Mercier et al.
Danfoss A/S
Easton Wayne B.
Maslousky Paul E.
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