Fluid-operated leveling valve systems

Details Fluid-operated leveling valve systems Fluid-operated leveling valve systems

1990-10-16

1992-11-10

Oberleitner, Robert J.

Land vehicles

Wheeled

Running gear

267 6416, 267 6428, 13762521, B60G 17056

Patent

active

051618176

ABSTRACT:
A fluid suspension system has a valve including first and second valve parts coupled to a supporting structure and to a supported structure, respectively, and movable relative to each other in response to movements of the supporting structure and the supported structure relative to each other. One of these first and second valve parts has a port connected to a fluid spring of the suspension system, and the other of these first and second valve parts includes a fluid passage having an aperture at that port for a supply of fluid through that port to the fluid spring in a first relative position of these first and second valve parts. A fluid outlet in that other valve part is spaced from the port in a first relative position of the first and second valve parts, and communicates with that port for a removal of fluid from the fluid spring in a second relative position of the first and second valve parts. Reaction of the suspension system to vibrations is reduced by providing a fluid-tight seal between the aperture and the port, and between the fluid outlet and that port for the extent of first and second separations proportional to an amplitude of the vibrations to be tolerated without reaction of the suspension system, and by extending the seal for the aperture by a distance in a direction away from the port also proportional to that amplitude.

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