Offshore crane wave motion compensation apparatus

Details Offshore crane wave motion compensation apparatus Offshore crane wave motion compensation apparatus

1984-04-12

1985-10-01

Levy, Stuart S.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

212191, 254277, 254392, 254900, 414138, B66D 150

Patent

active

045441375

ABSTRACT:
Motion compensated load-lifting apparatus for use on marine vessels. Apparatus includes a traveling weight used to maintain tension in the load-lifting member, and a locking mechanism to prevent movement of the traveling weight in one direction. The locking mechanism, such as a ratchet and pawl, can be employed to lift the load from the vessel at optimum periods of wave movement. Load direction sensing devices prevent attempted lift of the load as the vessel falls.

REFERENCES:
patent: 4025055 (1977-05-01), Strolenberg
patent: 4166545 (1979-09-01), Martinussen
patent: 4180171 (1979-12-01), Cunningham
patent: 4354608 (1982-10-01), Wudtke

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