Bridges – Gangway – ramp – or dock leveler
Patent
1977-01-07
1978-04-11
Byers, Nile C.
Bridges
Gangway, ramp, or dock leveler
61 48, E01D 100
Patent
active
040830721
ABSTRACT:
A method of and apparatus for connecting a material and personnel transfer ramp from an offshore oil structure, or the like, to a floating vessel which comprises a docking pedestal rigidly attached to the deck of a vessel, an attachment assembly which coverably and rotatably mounts onto the pedestal, the attachment assembly being provided with a swivel connection allowing attachment to a ramp mounted on an offshore structure, a line hanging down from the attachment assembly which is readily accessable from the boat, and a winch and associated line which guidably connects the attachment assembly on the ramp to the pedestal attached to the vessel. The limp hang line offers a great latitude of movements and ease of handling for connection in rough sea conditions. The correct method of attaching a free moving vessel to a stiff ramp structure is critical during the docking operation in order to prevent excessive shock loads.
REFERENCES:
patent: 2478177 (1949-08-01), Beutel
patent: 2641785 (1953-06-01), Pitts
patent: 2803841 (1957-08-01), Wellens
patent: 3004391 (1961-10-01), Miller
patent: 3008158 (1961-11-01), Stinson
patent: 3426719 (1969-02-01), Mizell
patent: 3808625 (1974-05-01), Fowler
patent: 3875603 (1975-04-01), Mampaey
patent: 4003473 (1977-01-01), Ryan
patent: 4011615 (1977-03-01), Maxson
Byers Nile C.
Pugh C. Emmett
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