Land vehicles – Wheeled – Running gear
Patent
1982-01-20
1986-03-04
Love, John J.
Land vehicles
Wheeled
Running gear
267 6419, B60G 1126
Patent
active
045737045
ABSTRACT:
Provided is a lift axle suspension system employing an extendible air chamber in which the lifting mechanism is located. The mechanism for lifting the vehicle's wheels out of road engagement includes a spirally coiled spring connected to a reel having a cable wrapped around it. The unwrapped end of the cable is connected to the vehicle and the reel is connected to the suspension. When air is supplied to the air chamber it extends, lowering the wheels into road engagement. In doing so, the chamber acts against the normal bias of the spirally coiled spring, playing out the cable as the reel rotates. Release of air from the chamber causes the bias of the spring to automatically rotate the reel in the opposite direction which in turn takes up the cable and raises the wheels from the road surface. Preloading of the spring serves to hold the suspension firmly in its riding position. The predetermined length of cable to be played out serves as a stop or shock absorber against over-extension of the air chamber.
REFERENCES:
patent: 2917318 (1959-12-01), Nallinger
patent: 3033554 (1962-05-01), Francis
patent: 3338184 (1967-08-01), Fisher
patent: 3381915 (1968-05-01), Nelson
patent: 3666220 (1972-05-01), Rider
patent: 3771812 (1973-11-01), Pierce et al.
patent: 4157188 (1979-06-01), Sims
Eckelberry Jim
VanDenberg Ervin K.
Love John J.
Myers Geoffrey R.
Turner Quick-Lift Corporation
Weaver Ross
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