Bridges – Gangway – ramp – or dock leveler – Attached
Patent
1977-10-25
1978-08-15
Byers, Nile C.
Bridges
Gangway, ramp, or dock leveler
Attached
61 48, E01D 100
Patent
active
041061500
ABSTRACT:
There is disclosed a loading platform mounted cantileverally from a vertical spindle carried from a walkway, such mounting being by means of a horizontally extending pivot for rotation of such ramp from a lowered position extending over a loading station to an elevated retracted position adjacent the walkway. A locater is mounted on the swing post for selectively controlling ramp positioning to various angular locations. A ramp extension is slidably mounted for longitudinal extension from the ramp itself. The ramp is counterbalanced to be normally urged to its elevated and retracted position.
REFERENCES:
patent: 903157 (1908-11-01), Allen
patent: 1106074 (1914-08-01), Bidlake
patent: 1674279 (1928-06-01), Ebeling
patent: 1723885 (1929-08-01), Patterson
patent: 2527653 (1950-10-01), Pierce
patent: 2726123 (1955-12-01), Mathews
patent: 3087178 (1963-04-01), Loomis
patent: 3163873 (1965-01-01), Hopkins
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