Servosteering, especially for motor vehicles

Details Servosteering, especially for motor vehicles Servosteering, especially for motor vehicles

1986-07-17

1989-03-14

Mitchell, David M.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

91434, 25112902, 25112915, B62D 508

Patent

active

048118060

ABSTRACT:
In a servosteering arrangement, a control mechanism combines a pressure operated valve responsive to servomotor chamber pressure, and a solenoid and plunger responsive to speed of the vehicle by means of a proportional magnet solenoid for controlling reaction chamber pressure and thus the manual force required to be exerted by a driver for steering a vehicle. Thus, a variable throttle pressure responsive valve combined with a speed responsive solenoid responsive inversely to speed, controls the manual steering force necessary to effect steering at various speeds, particularly in tright curves at low speeds with high servomotor pressures. An important safety feature in the event of failure of solenoid current is the maintenance of openness of the pressure operated valve with consequent high resistance to steering.

REFERENCES:
patent: 2893504 (1959-07-01), Jackson
patent: 4463819 (1984-08-01), Becker
patent: 4573659 (1986-03-01), Homes
patent: 4629025 (1986-12-01), Brasier
patent: 4640380 (1987-02-01), Daido

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