초록 ▼

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 o

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.

대표청구항 ▼

In apparatus for leveling a supported structure relative to a supporting structure with a fluid suspension system for a vehicle, said fluid suspension system located between said supporting structure and said supported structure, said suspension system being non-reactive to vibrations due to road ir

In apparatus for leveling a supported structure relative to a supporting structure with a fluid suspension system for a vehicle, said fluid suspension system located between said supporting structure and said supported structure, said suspension system being non-reactive to vibrations due to road irregularities up to a certain vibration amplitude, the improvement comprising in combination: a valve having first and second valve parts coupled to said supported structure and to said supporting structure, respectively, said first and second valve parts being on opposite sides of a plane for detentless movement relative to each other along said plane in response to movements of said supporting structure and said supported structure relative to each other; spaced first and second ports in one of said first and second valve parts connectable to a fluid supply and a fluid spring, respectively, of said suspension system; the other of said first and second valve parts having a first aperture at said first port and a second aperture at said second port, and a fluid passage between said first and second ports; a fluid outlet in said other valve part at said second port for a removal of fluid from said fluid spring; there being in a neutral position of said valve a first physical separation along said plane between said first aperture and said first port, a second physical separation along said plane between said second aperture and said second port, and a third physical separation along said plane between said fluid outlet and said second port; fluid-tight seals between said first aperture and said first port, between said second aperture and said second port, and between said fluid outlet and said second port for the extent of said first, second and third separations, with each of said first, second and third separations being made proportional to said vibration amplitude; an extension along said plane of one of said seals for said first aperture by a distance in a direction away from said first port also proportional to said amplitude; and an extension along said plane of another of said seals for said second aperture by a distance in a direction away from said second port proportional to said amplitude.