Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1989-04-10
1990-09-11
Marmor, Charles A.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
60384, 180154, B62D 508
Patent
active
049554441
ABSTRACT:
In order to prevent kick-back at the steering element that controls a fluid steering motor, there is provided hydrostatic steering apparatus that includes a control device connected between a priority valve and the steering motor. A load pressure conduit connects an outlet of the priority valve to a junction of the control device. The priority valve includes a tapping at which there is provided fluid pressure for moving priority valve slide, two pressure distributing throttles being connected to the tapping. A check valve that opens toward the junction is provided in the load pressure conduit between one of the distributing valves and the junction. Another check valve that opens toward the junction is fluidly connected in series with a control device supply throttle between the junction and the priority valve outlet, the supply throttle and junction being in a fluid line that supplies pressurized fluid to the steering motor.
REFERENCES:
patent: 4043419 (1977-08-01), Larson et al.
patent: 4470260 (1984-09-01), Miller et al.
patent: 4620416 (1986-11-01), Yip et al.
Petersen Jens K.
Sorensen Ole V.
Danfoss A/S
Easton Wayne B.
Johnson Clayton R.
Johnson Victor E.
Marmor Charles A.
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