Platform elevating vehicle suspension
OwnerJames R. Oberlanderinventor
Life of this patent
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Abstract
A wheeled suspension unit for elevating a vehicle platform from ground engagement to operational height, characterized by a lever that swings a wheel axis to and from alignment with a vertical plane extending between a raised fulcrum of the lever and a transverse axis of the vehicle, there being separate manually operable suspension units at opposite sides of the vehicle and each with a releasable latch for securing the elevated condition.
Claims18
A wheeled frame suspension unit for elevating the frame from ground level to vehicle operational height, and including;
- a frame having a first transverse support axis,
- a support member projecting above the frame and having a stop face and a second transverse fulcrum axis disposed over the frame and parallel to the first mentioned support axis,
- a lever member rotatably pivoted on the second mentioned fulcrum axis and having a third wheel axis spaced radially from the second mentioned fulcrum axis,
- and releasable latch means for holding the lever member against said stop face and positioning the third mentioned wheel axis of the lever member in alignment with the first mentioned support axis for securing the frame at vehicle operational height, and releasable to permit swinging of the lever member out of said alignment for lowering the frame to ground level.
A wheeled vehicle frame suspension unit for elevating the frame from ground level to vehicle operational height, and including;
- a frame having a first transverse support axis,
- a support member projecting above the frame and having a stop face and a second transverse fulcrum axis disposed over the frame and parallel to the first mentioned support axis,
- a lever member rotatably pivoted on the second mentioned fulcrum axis and having a third wheel axis spaced radially from the second mentioned fulcrum axis,
- releasable latch means for holding the lever member against said stop face and positioning the third mentioned wheel axis of the lever member in alignment with the first mentioned support axis for securing the frame at vehicle operational height, and releasable to permit swinging of the lever member out of said alignment for lowering the frame to ground level,
- and a power lever to rotate the lever member between said alignment with the first mentioned support axis and a position swinging out of said alignment.
The wheeled vehicle frame suspension unit as set forth in claim, 8, wherein the power ever projects from the second mentioned fulcrum axis a distance greater than the lever member length.
A vehicle frame suspension comprised of separate suspension units and at least one suspension unit at each side of the frame for elevating the frame from ground level to vehicle operational height and vice versa, each suspension unit including;
- a frame having a first transverse support axis,
- a support member projecting above the frame and having a stop face and a second transverse fulcrum axis disposed over the frame and parallel to the first mentioned support axis,
- a lever member rotatably pivoted on the second mentioned fulcrum axis and having a third wheel axis spaced radially from the second mentioned fulcrum axis,
- and releasable latch means for holding the lever member against said stop face and positioning the third mentioned wheel axis of the lever member in alignment with the first mentioned support axis for securing the frame at vehicle operational height, and releasable to permit swinging of the lever member out of said alignment for lowering the frame to ground level.
Dependencies are inferred from the claim text.