Universally-positionable bilaterally-symmetrical three-cylinder-

Details Universally-positionable bilaterally-symmetrical three-cylinder- Universally-positionable bilaterally-symmetrical three-cylinder-

1980-12-05

1982-11-23

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

172272, B60D 100

Patent

active

043602169

ABSTRACT:
A hitch element is fixed to the end of the piston rod of a horizontally disposed double-acting hydraulic cylinder. The closed end of the cylinder is swivelly connected to the bight portion of a horizontally disposed rearwardly open A-shaped frame underlying and fixed to the rear part of a truck chassis. An upright downwardly-open omega-shaped frame is rigidly connected at its ends to the ends of the A-shaped frame. A pair of upright double-acting cylinders have their closed ends swivelly connected to opposite upper corners of the upright frame, and have their piston rods connected, by X-connected bearing sleeves, to the piston rod of the horizontally disposed cylinder. A yoke prevents movement of the bearing sleeves away from the end of the horizontal cylinder. The upright cylinders co-operate to vary both vertical and lateral positioning of the hitch element.

REFERENCES:
patent: 3345083 (1967-10-01), Roberson
patent: 3432184 (1969-03-01), Tweedy

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