Vehicle lifting and towing method and apparatus

Details Vehicle lifting and towing method and apparatus Vehicle lifting and towing method and apparatus

1998-09-11

2000-08-01

Bratlie, Steven A.

Material or article handling

Traversing hoist type

Tow truck type

280402, B60P 312

Patent

active

060957484

ABSTRACT:
A lifting method and apparatus is provided that is especially suited for mounting on a towing vehicle and for lifting a vehicle. The apparatus is compact and efficient and especially suited for mounting to a tow truck. The lifting apparatus includes a boom and a riser pivotably mounted to a frame. A riser plate is mounted to the top end of the riser. A camming crank is pivotably attached to the riser plate. A riser pivot hingeably connects the camming crank to the riser plate. An arm anchor is also mounted to the frame. Link arms connect the arm anchor to the camming crank. A crank actuator rotates the camming crank to pivot the riser. The crank actuator can rotate the camming crank to selectively pivot the riser toward or away from the arm anchor, to respectively raise or lower the attached boom. The crank actuator for rotating the camming crank is an extending and retracting hydraulic actuator, such as a hydraulic cylinder and piston.

REFERENCES:
patent: 4797057 (1989-01-01), Shoup et al.
patent: 5853283 (1998-12-01), Grant

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