Bridges – Gangway – ramp – or dock leveler
Patent
1974-11-12
1976-10-12
Byers, Jr., Nile C.
Bridges
Gangway, ramp, or dock leveler
E01D 1512
Patent
active
039848914
ABSTRACT:
A portable ramp includes a span to the ends of which are secured feet, such securement being by means of pivotal connections that enable the feet to be pivoted so as to accommodate various differences in heights between two surfaces, from one to the other of which there is to be a movement such as of a wheeled vehicle.
REFERENCES:
patent: 2089380 (1937-08-01), Kammerer
patent: 3100556 (1963-08-01), DeRidder
patent: 3307719 (1967-03-01), Martin
patent: 3385182 (1968-05-01), Harvey
patent: 3424323 (1969-01-01), Barnaby
patent: 3516560 (1970-06-01), Brighton
patent: 3735440 (1973-05-01), Hetmanski
patent: 3742911 (1973-07-01), Lehe
patent: 3795333 (1974-03-01), Tebben
Byers Jr. Nile C.
Valley Craft Products, Inc.
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