Automotive suspension system

Land vehicles – Wheeled – Running gear

Patent

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Details

188314, 267 6415, B60G 1512

Patent

active

050169114

ABSTRACT:
A hydropneumatic suspension system for a vehicle has a hydraulic cylinder-piston device connected between the vehicle body and each of the wheels, and a plurality of gas springs which exert a spring force according to the hydraulic pressure in the hydraulic chamber of the cylinder-piston device. Each gas spring has a fluid chamber and a gas chamber which are defined in a casing and are separated from each other by a movable partition wall, and the fluid chamber is communicated with the hydraulic chamber of the hydraulic cylinder-piston device. The upper end portion of the piston rod is supported by the vehicle body by way of a mount. The piston rod is provided with a fluid passage which axially extends through the piston rod and the lower end of which opens to the hydraulic chamber of the cylinder-piston device. A support member is fixed to the piston rod at an upper portion below the mount. The upper end portions of the casings of the gas springs are mounted on the support member and the fluid chamber of each gas spring is communicated with the fluid passage in the piston rod by way of a fluid passage formed in the support member.

REFERENCES:
patent: 1566190 (1925-12-01), Finkhaus
patent: 3163412 (1964-12-01), Troy
patent: 3604725 (1971-09-01), Goff
patent: 3945664 (1976-03-01), Hiruma
patent: 4162091 (1979-07-01), Sano
patent: 4478431 (1984-10-01), Muller et al.

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