Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1989-05-10
1990-12-25
Spar, Robert J.
Material or article handling
Self-loading or unloading vehicles
Conveyor
B65G 6928
Patent
active
049798677
ABSTRACT:
A ramp attached to and used for the loading and unloading of goods from a vehicle, typically a truck. When not in use, the ramp folds compactly and is latched in an upright position at the rear of the vehicle. The ramp may be unfolded and extended in order to transport goods to and from the vehicle. As used, the ramp also may be latched in a half-ramp arrangement to serve as a bridge or dock plate. In the half-ramp arrangement, the ramp is folded to form two legs of a three-dimensional triangular structure, so that one portion of the ramp supports the other and allows it to bear weight.
REFERENCES:
patent: 2900094 (1959-08-01), Ferauson
patent: 3261051 (1966-07-01), Priest
patent: 3352440 (1967-11-01), Wilson
patent: 3441153 (1969-04-01), Handley
patent: 4021071 (1977-05-01), Norman
patent: 4043468 (1977-08-01), Shea
patent: 4084713 (1978-04-01), Rohrs et al.
patent: 4098414 (1978-07-01), Abiera
patent: 4127201 (1978-11-01), Banmann
patent: 4647270 (1987-03-01), Maloney
Bosche John Vanden
Northstar Industries, Inc.
Spar Robert J.
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