Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1993-10-25
1995-02-21
Bucci, David A.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
414422, 414629, 414636, B65G 6702
Patent
active
053910435
ABSTRACT:
The truck mounted lifting mechanism is carried on a truck frame having a pair of opposed C-shaped tracks extending rearward from the cab. A mast having a base carrying an axle engages the outside of the tracks with a pair of flanged rollers. A carriage is mounted at one end on the base axle of the mast. The other end of the carriage is provided with an axle and a pair of flanged rollers which engage the inside of the tracks. The carriage is provided with a threaded central opening and a screw gear extends through the threaded opening and along substantially the entire length of the truck frame. The screw gear is coupled by a chain drive to an hydraulic drive motor. Operation of the drive motor rotates the screw gear causing a lateral displacement of the carriage and the mast between the cab and the rear end of the truck frame. The rear end of the truck frame is provided with a pair of telescoping jacks to stabilize the truck during lifting. The mast is provided with a vertically movable and rotatable fork. Vertical movement of the fork is enhanced so that it may be lowered substantially below the truck frame. An hydraulic cylinder between the mast and the carriage allows the mast to be tilted either forward or backward. Mechanical stops at the base of the mast to prevent the mast from tilting too far forward into the cab. The cab is protected from the mast by a K-frame.
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Bohata John F.
Leteri Anthony
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