Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1980-01-22
1982-01-12
Silverstrim, John P.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
60484, 91420, B62D 506
Patent
active
043100627
ABSTRACT:
A steering circuit for an articulated farm tractor having front and rear frame sections pivotally interconnected with steering cylinders pivotally connected between the frame sections. An open center hydrostatic steering unit selectively directs hydraulic fluid from a pump to the steering cylinders and a pilot-operated, alternating check valve is interposed in the conduit connecting the steering mechanism with the steering cylinders.
REFERENCES:
patent: 3468126 (1969-09-01), Mercier
patent: 4006663 (1977-02-01), Baatrup
patent: 4213511 (1980-07-01), Rubenstein
Link Erwin F.
Schubert William L.
AuBuchon F. D.
International Harvester Company
Silverstrim John P.
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