Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1979-09-07
1982-03-23
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182 33, 297 59, A47C 400, A47C 318, A47C 900
Patent
active
043208177
ABSTRACT:
An improved combined chair and stool apparatus is disclosed. The apparatus includes a U-shaped member having a pair of leg portions defining the front legs of the apparatus, a pair of spaced support members extending between the front legs and secured thereto, and a pair of folding steps comprising upper and lower steps. A pair of spaced back legs are pivotally connected to the top step adjacent to the back edge of the top step for relative pivotal movement therebetween. A pair of spaced pivot links are pivotally connected at their opposite ends to the upper support member and to the back portion of the upper step. The lower step is pivotally attached at its front portion to the lower support member. A second pair of pivot links are pivotally connected to the top step and the bottom step. The second pair of pivot links are connected to the top step at a position forward the pivotal connection between the top step and the first pair of pivot links. The back legs are pivotally connected to their respective front legs at the ends of the back legs.
REFERENCES:
patent: 472603 (1892-04-01), Hamilton
patent: 1162237 (1915-11-01), Hipolito
patent: 1369246 (1921-02-01), Jones
patent: 2207923 (1940-07-01), Kelso
patent: 2230015 (1941-01-01), Rich
patent: 2948332 (1960-08-01), Hamilton
patent: 3059722 (1962-10-01), Rouse
patent: 3227243 (1966-01-01), Bates
patent: 4119175 (1978-10-01), Herwynen
Knoke Silas J.
Stamper James F.
Lear Siegler, Inc.
Machado Reinaldo P.
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