Compensation and hoisting apparatus

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum

Reexamination Certificate

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Details

C254S285000, C254S900000

Reexamination Certificate

active

06926260

ABSTRACT:
The invention is a hoisting device for a vessel a base structure provided with fixed cable blocks with pulleys; a trolley connected to a cable pulley block and a mechanism for gripping a load; a compensator a hoisting mechanism with a hoisting cable and a winch, wherein the hoisting cable is guided over the cable pulleys connected to the base structure and is adapted to move the trolley relative to the base structure with the aid of the winch; a secondary compensator with fixed cable blocks and pulleys connected to the base; a cable pulley set connected to the compensator end; a connection cable connected to a stationary section and a movable cable block with pulleys; a hoist connected to the vessel; a connecting cable guided over pulleys; and movable cable block and is adapted to move the compensator second end with the aid of the secondary hoisting mechanism.

REFERENCES:
patent: 3658298 (1972-04-01), Moore
patent: 3714995 (1973-02-01), Hanes
patent: 3791628 (1974-02-01), Burns
patent: 3804183 (1974-04-01), Duncan
patent: 3917230 (1975-11-01), Barron
patent: 4423994 (1984-01-01), Schefers
patent: 4620692 (1986-11-01), Foreman
patent: 4688764 (1987-08-01), Nayler
patent: 4867418 (1989-09-01), Daniels
patent: 5894895 (1999-04-01), Welsh
patent: 2171974 (1985-03-01), None

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