B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
14/4
B63B 27/14 (2006.01) E01D 15/24 (2006.01)
Patent
CA 1165061
ABSTRACT OF THE DISCLOSURE The automatic safety gangplank includes a plurality of cooperating ladder sections which are extendable from a fully telescoped or retracted position to an elongated position for extension from a dock to the deck of a ship. The end of the base ladder section is connected to a rotatable turntable and is equipped with a pair of lift cylinders. The turntable and the lift cylinders are connected to respectively rotate and elevate the base segment at all times, when the other gangplank ladder sections are either in their extended or retracted positions. A gangway extends from the end of the outermost ladder section in angular relationship and is positioned upon the deck of the ship. Automatic controls which are responsive to changes in elevation of the deck relative to the dock are provided to automatically either extend, retract, elevate or lower the safety gangplank as may be necessary to continuously maintain a safe walkway between the dock and the deck of the ship for all relative positions of the deck when the ship is either simply docked or when it is being loaded or unloaded.
389935
Riches Mckenzie & Herbert Llp
Zimmerman Mahlon N.
LandOfFree
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