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
1984-06-05
1985-11-12
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
254335, 254337, 254392, B66D 150
Patent
active
045523398
ABSTRACT:
A hydraulic or pneumatic cylinder supports a pair of non-circular discs and a circular pulley about which a hoisting cable and a carrying cable are trained. The discs are configured such that a constant force is exerted on a load supported by the hoisting cable independent of the variation in pressure in the cylinder due to displacement of the piston supporting the discs. The carrying cable comprises two runs; one having one end fixed to one of the discs and the other end fixed to the supporting base, and the other having one end fixed to the other disc and the other end fixed to a pulley block supporting the load. The hoisting cable extends from a winch, over the circular pulley, to the pulley block. The arrangement compensates for relative motion between the load and the supporting base.
REFERENCES:
patent: 3151686 (1964-10-01), Kammerer
patent: 3743249 (1973-07-01), Van Daalen
patent: 3749367 (1973-07-01), Joubert et al.
patent: 3912227 (1975-10-01), Meeker et al.
patent: 4076218 (1978-02-01), Gault
patent: 4236695 (1980-12-01), Morrison
patent: 4291474 (1981-09-01), Schmidt
patent: 4341373 (1982-07-01), Mouton, Jr.
Drenth Berend W.
Werners Theo F. H.
Hydraudyne B.V.
Jaekel Katherine
Levy Stuart S.
Snyder John P.
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