Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1998-05-27
2000-03-28
Keenan, James W.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
414462, 212180, 212255, 212261, B60P 154
Patent
active
060423285
ABSTRACT:
A lifting device for attachment to a vehicle trailer hitch or the like. The device includes a hitch bar for attachment to the trailer hitch. A lateral extension arm is mounted on the hitch bar and a riser arm is rotatably mounted to the lateral extension arm. A boom arm is mounted on the riser arm, the boom arm having load attachment elements for attaching a load thereto. Also provided is a rotating element attached to the lateral extension arm and the boom arm for rotating the riser arm about the lateral extension arm to raise and lower the riser arm relative to the hitch bar. Raising and lowering of the riser arm moves the boom arm to transcribe a predetermined arc lying in a vertical plane. It is preferred to have the hitch bar centered on a platform centerline wherein the vertical plane intersects the centerline. The predetermined arc may be from about 130 degrees to about 150 degrees, and preferably 140 degrees, with respect to the bed of the vehicle. The device further includes a pair of opposed turret plates attached to one end of the lateral extension arm, wherein the riser arm and the rotating element are journaled within the turret plates.
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Grablift Portable Truck Crane brochure.
Claje Dual Wave-Runner & Quad Rack brochure Claje Mfg., LLC.
Keenan James W.
Mundy John S
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