Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1981-03-16
1983-09-20
Peters, Jr., Joseph F.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
60385, 137111, 180152, B62D 508
Patent
active
044050305
ABSTRACT:
A hydrostatic power steering control system with variable feedback compensation employing a unique compensating valve. The steering control system includes first and second hydraulic cylinders, each having two internal chambers denoted as head and feedback chambers. A piston is movably retained in each of the cylinders and is attached to a piston rod which extends outwards. The pair of piston rods are connected to a pair of steerable wheels by a mechanical linkage. Fluid contained in a reservoir is pressurized by a supply pump and is selectively passed to a head chamber of one of the cylinders by a control valve. The control valve is actuated by pressure differences in two interconnected fluid passages which connect to the feedback chambers of the two cylinders. A pressure difference in these passages is created by manually operating a steering wheel which actuates a metering pump positioned across the fluid passages. In order to alleviate pressure fluctuations between the two feedback chambers, a compensating valve and a pair of one-way check valves are connected across the fluid passages in a parallel relationship. The compensating valve allows pressurized fluid above a predetermined pressure range value to be relieved from the system, but does not limit a pressure value generated by the metering pump.
REFERENCES:
patent: 3016708 (1962-01-01), Gordon et al.
patent: 3412822 (1968-11-01), Canning
patent: 3550611 (1970-12-01), Baatrop
patent: 3556242 (1971-01-01), Dollase
patent: 3949650 (1976-04-01), Blatt et al.
patent: 4161865 (1979-07-01), Day
Deere & Company
McGiehan Donn
Peters Jr. Joseph F.
LandOfFree
Steering system and compensating valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steering system and compensating valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steering system and compensating valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-584070