Vehicle leveling valve device with dampening arrangement

Details Vehicle leveling valve device with dampening arrangement Vehicle leveling valve device with dampening arrangement

1976-06-03

1978-03-07

Marbert, James B.

Spring devices

Vehicle

Comprising compressible fluid

280714, F16F 500

Patent

active

040776174

ABSTRACT:
A vehicle leveling valve device for adjusting air spring pressure according to vehicle load and including a hydraulic dampening arrangement wherein one or the other of an air pressure supply or an exhaust valve connected to the air springs is actuated, according to the change in vehicle load, by one of a pair of respective leaf springs when deflected by a cam, in turn, operable responsively to variation in vehicle load and height. Deflection of each leaf spring is resisted by respective hydraulic pistons which are arranged to yield to a normal rate of vehicle load change and therefore permit operation of either the supply or exhaust, but resist any momentary change of vehicle height, such as caused by a jounce, and therefore restrain deflection of the leaf springs and preclude any untimely operation of the valve device.

REFERENCES:
patent: 3143361 (1964-08-01), Herbenar et al.
patent: 3183935 (1965-05-01), Davies et al.

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