Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1996-12-16
1998-12-29
Brahan, Thomas J.
Material or article handling
Self-loading or unloading vehicles
Conveyor
193 35R, 193 37, 296 61, B65G 6702
Patent
active
058532811
ABSTRACT:
A ramp is used for loading and unloading recreational vehicles, especially snowmobiles, trucks, trailers and the like. The preferred ramp is a three section ramp with two outer sections and a center section connected to fold from side to side for storage and transport purposes. Each outer ramp section is equipped with a series of rollers spaced along the ramp section to allow the skis of a snowmobile to advance along the ramp without binding. The rollers are preferably made with a rigid core and a rotating outer sleeve of PVC. The tubing is slit helically from end to end so that it can be removed and installed without dismantling the ramp. The center section of the ramp is equipped with lateral cleats.
REFERENCES:
patent: 3687314 (1972-08-01), Haughland
patent: 3690481 (1972-09-01), Pelletier
patent: 3818528 (1974-06-01), Petersen
patent: 4478549 (1984-10-01), Stelly et al.
patent: 4926995 (1990-05-01), Kauffman
patent: 5538308 (1996-07-01), Floe
Battison Adrian D.
Brahan Thomas J.
Thrift Murray E.
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