Land vehicles – Wheeled – Running gear
Patent
1985-12-12
1987-05-19
Butler, Douglas C.
Land vehicles
Wheeled
Running gear
188299, 188318, 188319, 364424, F16F 934
Patent
active
046661808
ABSTRACT:
A control system for controlling the damping force of a plurality of hydraulic dampers, each of which includes a damping force producing mechanism; a damping force adjustment member for adjusting the effective passage area of an oil passage in the damping force producing mechanism; an actuator connected to the damping force adjustment member; and an electrical power supply circuit for supplying electrical power to the actuator. The system includes: a first circuit for monitoring the operating time of the actuator and, when the operating time exceeds a first predetermined value, for forcibly moving the damping force adjustment member to a predetermined position by the actuator so as to thereby perform a forced damping force adjustment control and a second circuit for monitoring the operating time of the forced first circuit and, when the operating time of the first circuit exceeds a second predetermined value, for stopping the forced damping force adjustment control.
REFERENCES:
patent: 3559776 (1971-02-01), Schultze
patent: 4313529 (1982-02-01), Kato et al.
patent: 4391452 (1983-07-01), Ohmori
patent: 4463839 (1984-08-01), Ashiba
patent: 4526401 (1985-07-01), Kakizaki et al.
patent: 4550286 (1985-10-01), Holland et al.
patent: 4568096 (1986-02-01), Yew et al.
Butler Douglas C.
Tokico Ltd.
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