초록 ▼

A suspension system for utility vehicles of the type in which the chassis is supported at one end on an oscillating axle with a central pivot, has the oscillation of this axle controlled by one or two extensible links each in the form of a hydraulic cylinder unit. The second vehicle axle has limited

A suspension system for utility vehicles of the type in which the chassis is supported at one end on an oscillating axle with a central pivot, has the oscillation of this axle controlled by one or two extensible links each in the form of a hydraulic cylinder unit. The second vehicle axle has limited oscillation used to shuttle the spool of a directional control valve which determines the flow of pressurized fluid for operation of the hydraulic cylinder units(s). The control valve can also be electrically operated responsive to the closing of switches responsive to the oscillations of the second axle.

대표청구항 ▼

A positive wheel to ground contact system for a vehicle having a chassis with right and left sides and front and rear ends, said system comprising: a front oscillating axle pivotally mounted on said chassis centrally of such axle; a front set of right and left wheels mounted on said front axle; a re

A positive wheel to ground contact system for a vehicle having a chassis with right and left sides and front and rear ends, said system comprising: a front oscillating axle pivotally mounted on said chassis centrally of such axle; a front set of right and left wheels mounted on said front axle; a rear axle mounted on said chassis behind said front axle; a rear set of right and left wheels mounted on said rear axle and together with said front set providing a balanced ground support condition for said chassis when the wheels have coplanar ground contacts; variable length means extending between said chassis and front axle for controlling right and left oscillation of the chassis and front axle relative to one another by extension and retraction of said variable length means; length changing means for varying the effective length of said variable length means by extension and retraction thereof; control means for sensing differences from said balanced ground support condition by sensing changes in the loading between the right and left rear wheels resulting from changes in the topography of the ground surface engaged by the front and rear wheels; and operating means controlled by said control means and connected to said length changing means for causing whatever extension or retraction of said variable length means will maintain said balanced ground support condition.