Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
2011-05-24
2011-05-24
Marcelo, Emmanuel M (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
C254S375000, C254S380000
Reexamination Certificate
active
07946559
ABSTRACT:
A dismantable hoist for storing and transporting wire rope and for lowering and raising the wire rope from a building roof site including a lightweight frame having a base, lightweight reel, for storing the wire rope, having a central drum and a pair of spaced-apart peripheral rings attached to the drum forming opposed side flanges rotatably mounted in the frame, drive means removably attached to the drum for rotating the drum for lowering and raising the wire rope, and brake means operatively connected to the spaced-apart peripheral rings and normally biased into braking engagement with the peripheral rings to stop lowering of the wire rope upon release of the brake means. The brake means include a pair of opposed brake shoes pivotably mounted in the frame to engage each of the peripheral rings, biasing means for normally urging each pair of opposed brake shoes towards each other for engaging and braking the peripheral ring therebetween, and a lever pivotably mounted in the frame to operatively engage the brake shoes for disengaging the brake shoes from the peripheral rings upon manually actuating the lever, whereby the drum is released for lowering or raising the wire rope.
REFERENCES:
patent: 2080804 (1937-05-01), Brantly
patent: 3322398 (1967-05-01), Smith
patent: 4145028 (1979-03-01), Kelley et al.
patent: 4162059 (1979-07-01), Fletchall
patent: 4552340 (1985-11-01), Sheppard
patent: 5921529 (1999-07-01), Wilson et al.
Fors Arne I.
Marcelo Emmanuel M
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