Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1987-11-09
1989-11-21
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
414562, 2804151, 254323, 212244, 212254, B60R 900
Patent
active
048818640
ABSTRACT:
A swingable boom-type hoist is disclosed which is characterized by a forwardly-projecting tongue of rectangular cross section that telescopes into the box-beam style drawbar of a conventional trailer hitch carried by the load-carrying vehicle thus cooperating therewith to maintain the stanchion from which the tongue projects in an upright position. The boom on the upper end of the stanchion can swing through a complete circle and is preferably vertically adjustable. An important feature is the retractable foot on the lower end of the stanchion which can be raised off the ground while the load in the load-carrying vehicle is transported from one place to another without having to dismount the hoist. A conventional winch is used to raise and lower the load.
REFERENCES:
patent: 2509950 (1950-05-01), Zierke
patent: 2661854 (1953-12-01), Adams
patent: 3784035 (1974-01-01), Dunbar
patent: 3804263 (1974-04-01), Castonguay
patent: 3836024 (1974-09-01), Mantino
patent: 3952893 (1976-04-01), Kolesar
patent: 4635835 (1987-01-01), Cole
patent: 4738581 (1988-04-01), Kuhlman
Gernstein Terry M.
Hitch Lift, Inc.
Werner Frank E.
LandOfFree
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