Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response – Occupant actuation or control
Patent
1989-04-24
1990-02-13
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
Occupant actuation or control
182 39, 182129, 182145, 248210, E06C 500, E06C 532, E06C 714
Patent
active
048998478
ABSTRACT:
This invention is directed at a mobile ladder which has a two pairs of rollers. One pair of rollers moves in a first metal trough and the other pair moves in another metal trough. The metal trough are positioned close to a building wall, for example, and are in parallel relation to each other. The ladder can be moved in the troughs when a workman in on the ladder through use of a pulley system.
This invention is also directed at a mobile scaffold which has a two pairs of rollers. One pair of rollers moves in a first metal trough and the other pair moves in another metal trough. The metal trough are positioned close to a building wall, for example, and are in parallel relation to each other. The scaffold can be moved in the troughs when a workman in on the scaffold through use of a pulley system.
This invention is also directed at a work bucket that is mounted to a ladder by a pair of bracket members.
This invention is also directed at a work bucket assembly that is mounted to a ladder by a pair of bracket members engaged to a bar. The bar is attached to a pulley system which in turn is attached to a work bucket allowing the work bucket to be raised and lowered by a workman in the work bucket.
REFERENCES:
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patent: 4480810 (1984-11-01), Hall
patent: 4662476 (1987-05-01), Ross
patent: 4706918 (1987-11-01), Wilson
patent: 4730802 (1988-03-01), Chatham
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