Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Patent
1991-05-10
1992-05-19
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Means maintaining platform level on angularly movable support
Swingable support
182 82, B66F 1104, E21B 700
Patent
active
051139693
ABSTRACT:
A displaceable working platform comprising a main frame having stabilizing extension posts secured thereto for immovably securing the main frame to surrounding surfaces. A displaceable platform is slidingly secured to the main frame. The platform is displaceable on the main frame from a storage position to a working position. An extensible boom is secured on a rotating support base which is secured to the displaceable platform. The boom has a working free end at which a working element is secured. The rotating support base is rotatable by a motor and a boom is extensible by an hydraulic system which is also provided to regulate the angular position of the boom by controlling hydraulic pistons connected between the boom telescopic sections, and the rotating support base.
REFERENCES:
patent: 1987982 (1935-01-01), Wheeler
patent: 2176885 (1939-10-01), Cadwallder
patent: 2194466 (1940-03-01), Cadwallder
patent: 3113661 (1963-12-01), Linke
patent: 3153510 (1964-10-01), Brannfors
patent: 3610367 (1971-10-01), Atchey
patent: 3809180 (1974-05-01), Grove
patent: 3840128 (1974-10-01), Swoda
patent: 3907366 (1975-09-01), Pender
Drolet Luc
Michaud Paul
Centre de Recherche Industrielle Du Quebec
Machado Reinaldo P.
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