Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1979-04-03
1980-12-23
Christian, Leonard D.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254264, 254361, B66D 148
Patent
active
042406137
ABSTRACT:
A winch mechanism of the deep lift type comprises a variable displacement hydraulic pump/motor which is adjusted so as to support from a ship or the like via a rope haulage mechanism a submerged load under the influence of pressurized hydraulic fluid which is stored at a substantially constant pressure in a high pressure accumulator and in a low pressure accumulator. As the ship rises and falls, forces on the submerged load are sufficient to maintain the load substantially stationary with hydraulic fluid being passed via the pump/motor between the two accumulators. Lifting is accomplished by a pump which circulates hydraulic fluid through the pump/motor.
REFERENCES:
patent: 3817033 (1974-06-01), Appel et al.
patent: 4025055 (1977-05-01), Strolenberg
Christian Leonard D.
Vickers Shipbuilding Group Ltd.
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