Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1980-05-09
1983-10-18
Brust, Joseph Paul
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
60405, B62D 506
Patent
active
044100574
ABSTRACT:
An emergency hydraulic system for a vehicle having a hydraulic steering mechanism normally supplied by an engine driven pump. An electric motor driven pump supplies the steering mechanism under emergency conditions. The electric motor driven pump is inoperative during normal operation of the engine but if the engine ceases to operate it comes on responsively to the occurrence of a predetermined condition in the hydraulic circuit. In order to prevent the electric motor driven pump from operating during engine starting a relay is provided having a normally open switch in circuit with the motor. The relay is operated by a normally open engine condition switch which is arranged to close when the engine is running. The relay holds itself in, thus preparing the electric motor for operation should the predetermined condition occur in the hydraulic circuit of the steering mechanism.
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Brust Joseph Paul
Clark Equipment Company
Wiessler John C.
Witt Kenneth C.
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