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
1994-04-13
1995-06-27
Hail, III, Joseph J.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
182129, 254325, 254334, B66D 302
Patent
active
054273560
ABSTRACT:
The instant invention uses a ladder which attaches to a wheel-base type stabilizer which aids in rolling the object onto and off a roof or other elevated area. The ladder attaches to the wheel base stabilizer with two "U" shaped channels which receive two of the ladder rungs and the rungs are locked in place with two slip pins on the underside. At the top of the ladder is a leg which also has two "U" shaped channels which slip over the rungs of the ladder and are locked in place with two slip pins. A boom, with a mating square tube welded to it, receives the leg which is attached to the top of the ladder. A leg and wheel assembly are assembled into a second mating square tube welded to the other end of the boom and held in place with a slip pin.
REFERENCES:
patent: 2436337 (1948-02-01), Smith et al.
patent: 3446309 (1969-05-01), Davis et al.
patent: 3902700 (1975-09-01), Cox
patent: 4128228 (1978-12-01), Ziegelmann
patent: 4598795 (1986-07-01), Larson
patent: 4770273 (1988-09-01), McMakin et al.
patent: 5139108 (1992-08-01), Pate
Krotov Adam
Krotov Sandra L.
Hail III Joseph J.
Lukasik Frank A.
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