Compensation device for a crane

Details Compensation device for a crane Compensation device for a crane

1977-05-03

1978-11-21

Oresky, Lawrence J.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

212 3R, 214 13, B66D 148

Patent

active

041262980

ABSTRACT:
A ship-mounted crane is provided with a compensation device for ensuring that its load rope will suspend a load selectively stationary relative to the ship, or stationary relative to a load-receiving surface relative to which the ship moves. For this purpose, the crane is provided with a second rope separate from the load rope, and main and auxiliary pneumatic springs movable independently of each other. The load rope is trained about the main pneumatic spring; while the second rope is trained about both pneumatic springs and is selectively connectible to the load-receiving surface.

REFERENCES:
patent: 3606854 (1971-09-01), Lunteren
patent: 4025055 (1977-05-01), Strotenberg

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