Foldable cable-supported ramp

Details Foldable cable-supported ramp Foldable cable-supported ramp

1987-08-03

1988-10-25

Massie, Jerome W.

Bridges

Gangway, ramp, or dock leveler

182218, 182223, 193 41, E01D 100, E01D 1500

Patent

active

047792981

ABSTRACT:
A portable foldable ramp for bridging the space between ground level and a raised level such as the bed of a pickup truck, to permit the passage of the wheels of all-terrain vehicles and like products. The ramp has a pair of generally U-shaped ramp sections hingedly connected in end-to-end alignment so as to be foldable to coextensive bottom-to-bottom abutment for ease of transport. A somewhat stiff, flexible cable has its ends connected to the remote ends of the bottoms of the ramp sections to support the load. The cable is guided when the ramp sections are folded to dispose it in looped configuration within the confines of the coextensive ramp sections which intermesh when the ramp sections are folded.

REFERENCES:
patent: 484086 (1892-10-01), Cassidy
patent: 653942 (1900-07-01), Willis et al.
patent: 802741 (1905-10-01), Dennis
patent: 976074 (1910-11-01), Hartman
patent: 1115775 (1914-11-01), Bisbach
patent: 1232437 (1917-07-01), Simpson
patent: 1776565 (1930-09-01), Morton
patent: 3009183 (1961-11-01), Lay
patent: 3517791 (1970-06-01), Miles
patent: 3943589 (1976-03-01), Pedersen
patent: 4084713 (1978-04-01), Rohrs et al.

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