Fire escape – ladder – or scaffold – Having transpositioning base and erecting means – Telescopic erecting means
Patent
1974-02-15
1976-05-11
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Having transpositioning base and erecting means
Telescopic erecting means
182142, 182128, 214 95R, 214670, 198 81, 198 66, E04G 314
Patent
active
039556859
ABSTRACT:
Apparatus as described for lining the interior of a metallurgical furnace, especially one having openings at both the bottom and the top of the vessel, with refractory brick. A tower structure is extensible into the furnace interior and carries a work platform that is positionable to various elevations within the furnace.
REFERENCES:
patent: 2933918 (1960-04-01), Arnold
patent: 3033389 (1962-05-01), Abarotin
patent: 3166154 (1965-01-01), Titzel
patent: 3241634 (1966-03-01), Prosser
patent: 3370888 (1968-02-01), Skendrovic
patent: 3439794 (1969-04-01), Park et al.
Machado Reinaldo P.
United States Steel Corporation
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