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
1979-03-19
1980-10-14
Jillions, John M.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254277, 254264, B66D 126
Patent
active
042276799
ABSTRACT:
A multi-unit hoist apparatus is provided having an overload arrangement in the form of reversible pressure medium cylinders connected to the fixed end of each hoist unit in the apparatus. Appropriate controls are incorporated into the pressure medium supply to each unit, whereby if the load becomes unbalanced the unit subjected to an overload is relieved when the overload reaches a specific preset level.
REFERENCES:
patent: 3265360 (1966-08-01), Tax
patent: 3273860 (1966-09-01), Weisenbach
patent: 3618897 (1971-11-01), Swoboda et al.
patent: 3743107 (1973-07-01), Verschoof
patent: 4126298 (1978-11-01), Lub
Hebezeuge und Fordermittel, 14 (1974) H. 11.
Schafer Felix
Wiggershaus Fred
Jillions John M.
Mannesmann Demag A.G. Wolfgang-Reuter-Platz
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