Hydropneumatic spring suspension device for vehicles

Details Hydropneumatic spring suspension device for vehicles Hydropneumatic spring suspension device for vehicles

1979-10-03

1981-07-14

Peters, Jr., Joseph F.

Land vehicles

Wheeled

Running gear

267 65D, 280710, B60G 1126

Patent

active

042782724

ABSTRACT:
A hydropneumatic spring suspension, especially for automotive vehicles with a load bed, includes a hydropneumatic spring element that produces gaseous elastic forces and damping forces by a work piston slidable in an oil-filled work chamber that is loaded by a gas cushion, such that the pressure of the gas cushion determines a variable bearing force or load of the spring element. To increase the bearing force, a pressure medium (oil or gas) is supplied to the spring element. In the instant invention, this pressure medium is supplied from an auxiliary cylinder connected with a load bed, and an auxiliary piston provided with receiving devices for a load unit. When the load unit is set on the piston, the piston is moved from an extended position into a retracted position to supply pressure medium to the spring element, and hence increase the bearing force of the spring element. Preferably the fully retracted position of the auxiliary piston is limited by application of the load unit to a load plate on the load bed such that during transport, the load unit is supported by the load bed, and not by the auxiliary piston or pistons as such.

REFERENCES:
patent: 2712946 (1955-07-01), Cicero
patent: 2970614 (1961-02-01), Christensen
patent: 3620542 (1971-11-01), Hovorka
patent: 3623745 (1971-11-01), Taylor

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