Motor vehicles – Special wheel base – Five or more wheels
Patent
1987-11-19
1989-08-08
Marmor, Charles A.
Motor vehicles
Special wheel base
Five or more wheels
180290, B62D 6112
Patent
active
048544094
ABSTRACT:
A control system for a lift axle suspension wherein two or more axle suspensions are mounted on a vehicle frame and a liftable axle is automatically raised or lowered depending on the load on another of the axle or axles. An override to the automatic lift system is provided when the vehicle is fully loaded to lift a liftable axle selectively for a limited, relatively short period of time to assist in maneuvering the vehicle. The control system detects the load on one axle and automatically raises the second axle to the raised position when the load on the first axle is below a first predetermined value and automatically lowers the second axle to the lower position when the lower load on the first axle is above a predetermined value which is greater than the first predetermined value. A delay is provided in the operation of the control system to lower the second axle upon the detection of the load on the first axle to compensate for road bumps. An electrical sensor coupled to the load detector provides a signal to an electrical circuit in the controller to control the operation of the second axle.
REFERENCES:
patent: 2777529 (1957-01-01), Harbers
patent: 3201141 (1965-08-01), Bernstein et al.
patent: 3494632 (1970-02-01), Bostrom
patent: 3499663 (1970-03-01), Hedlund et al.
patent: 3877715 (1975-04-01), Thayer et al.
patent: 4141430 (1979-02-01), Eddy, Jr.
patent: 4173259 (1979-11-01), Heckenkromp
patent: 4284156 (1981-08-01), Carstensen et al.
Neway, "Neway Air Ride", Brochure-Copyright 1986.
Hillebrand Robert D.
Wilson Charles W.
Lear Siegler, Inc.
Marmor Charles A.
Weaver Ross
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