Lifting apparatus

Details Lifting apparatus Lifting apparatus

1989-04-27

1991-04-09

Bucci, David A.

Material or article handling

Self-loading or unloading vehicles

Loading or unloading by other carrier or mover means, and...

414556, 414917, B60P 144

Patent

active

050060341

ABSTRACT:
A lifting apparatus includes a load support device for engaging and supporting a load as the load support device and the load are moved between a lowered position and a raised position relative to a base. A pair of spaced lifting arms are connected at first pivotal connections to the base and at second pivotal connections to the load support device for moving the load support device between its lowered and raised positions. A stabilizer arm is connected at a third pivotal connection to the load support device, and at a fourth pivotal connection to the bases, for controlling a rotational orientation of the load support device about an axis of the second pivotal connection relative to the base. A sprocket is rigidly attached to each of the lifting arms substantially coaxial with the first pivotal connection, and a chain is operably engaged with each sprocket. A power drive, preferably a hydraulic ram, is mounted on the base and operably connected to each chain for moving the chains to rotate the sprockets and the lifting arms to thereby move the load support device between its lowered and raised positions.

REFERENCES:
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Exhibit A-Waltco 1090 Series Hydraulic Tailgate Lifts Brochure (Undated).
Exhibit B-An Unnamed, Undated Brochure Showing a Similar Structure to the Waltco Device.
Exhibit C-"Champ Tow-A-Lift" Brochure of Champ Corporation of El Monte, Calif.(Undated).
Exhibit D-SAE Standard SAE J715 Sep. 83 (Undated).
Exhibit E-Photograph of "Halliburton Drop-Tub Blender" (Undated).

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