Land vehicles – Wheeled – Articulated vehicle
Patent
1983-11-14
1985-10-01
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
173 42, 280492, B60D 300, E21B 1504
Patent
active
045441766
ABSTRACT:
A control mechanism for selectively positioning an upright earth working tool carried by a portable vehicle having a source of pressurized hydraulic fluid. The control mechanism includes a shaft rotatably carried on a horizontal base plate at the front end of the vehicle, and pivotally connected to a carrier member for the earth working tool for tilting movement of the carrier member laterally of the vehicle. A first hydraulic cylinder assembly for longitudinally tilting the working tool is pivotally connected at its rearward end on the shaft and at its forward end to the carrier member. A second hydraulic cylinder assembly for tilting the carrier member transversely of the vehicle has one end pivotally mounted on the base plate and is pivotally mounted at its other end to the shaft so that on rotation of the shaft the carrier member is tilted transversely. Each hydraulic cylinder assembly may be independently moved so that the earth working tool may be optimally positioned with respect to the level or grade of the terrain.
REFERENCES:
patent: 2662736 (1953-12-01), Abrams
patent: 2928322 (1960-03-01), Spitzer
patent: 2940267 (1960-06-01), Shaver
patent: 3088385 (1963-05-01), Dorkins et al.
patent: 4245714 (1981-01-01), Kersey
Lowell Rudolph L.
Pekar John A.
Shaver Manufacturing Co.
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