Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1988-10-20
1991-09-24
Marmor, Charles A.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
180132, 180152, 418613, B62D 5097
Patent
active
050506960
ABSTRACT:
A secondary hydraulic steering system being automatically triggered and manually actuated. The steering system is provided with a dual displacement fluid meter having a fluid pressure sensing valve for selecting the operational configuration in which the fluid meter is operated. The fluid pressure sensing valve is hydraulically coupled to the source of pressurized fluid and in response to a loss of fluid pressure shifts the dual displacement fluid meter into a reduced displacement configuration so that the operator has greater mechanical advantage.
REFERENCES:
patent: 3811699 (1974-05-01), Casey
patent: 3870172 (1975-03-01), Huber
patent: 4109679 (1978-08-01), Johnson
patent: 4470260 (1984-09-01), Miller et al.
patent: 4480971 (1984-11-01), Swedberg
patent: 4493622 (1985-01-01), Miller
patent: 4809586 (1989-03-01), Gage et al.
patent: 4838314 (1989-06-01), Gage
Irwin Stanley L.
McGovern Donald E.
Boehler Anne Marie
Deere & Company
Marmor Charles A.
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