Truck hoist

Details Truck hoist Truck hoist

B - Operations, Transporting

60

P

298/7

B60P 1/16 (2006.01) B60P 1/20 (2006.01)

Patent

CA 1134412

TRUCK HOIST ABSTRACT OF THE DISCLOSURE A hoist mechanism that more effectively uses its hydraulic capacity is comprised of a first and a second pair of lifting arms connected at a first pivot point, a hydraulic cylinder connected to said lifting arms, and a pivoting stop means that coordinates movement of the two pair of lift arms. During the initial lifting action of the hoist, the mechanism achieves the advantages of a double arm type hoist by causing the first pair of lifting arms to remain stationary while the second pair of lifting arms rotates around the first pivot point. After the second pair of lift arms reach a predetermined angle with the stationary first pair, the stop means are engaged in a way to cause both pair of lift arms to move upon further lifting action of the hoist, thus achieving the advantages of a scissors type hoist from this point on.

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