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
1985-11-21
1987-10-06
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
116212, 254369, 254376, 254380, 294 8618, B66D 300, G01L 506
Patent
active
046977902
ABSTRACT:
Pulley hoists are disclosed which provide moving anchor hooks that are suspended by two "pulls" of rope, and which may be fabricated by a single part. Anchor hooks are also disclosed which have multiple, independently movable hook portions so that certain large objects may be moved using a sole power unit having said anchor hooks at either end thereof. The anchor hooks of the present invention are also provided with tension indicator apparatuses and safety apparatuses in the event of the overloading of the device. Safety apparatus and sound alarm apparatus are also provided on the power units of the pulley hoists of the present invention in the event of the overloading of the device.
REFERENCES:
patent: 2658723 (1953-11-01), Coffing
patent: 3410246 (1968-11-01), Lowe
patent: 3602065 (1971-08-01), Ratcliff
patent: 4278043 (1981-07-01), Heath
patent: 4457251 (1984-07-01), Weman et al.
patent: 4462570 (1984-07-01), Gagnet
Bloom Leonard
Hail III Joseph J.
Levy Stuart S.
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