Fire escape – ladder – or scaffold – Convertible – Ladder
Patent
1975-11-19
1976-06-01
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Convertible
Ladder
297118, A47C 1300
Patent
active
039602419
ABSTRACT:
Furniture foldable structure, unfoldable to provide either a chair or ladder structure, which foldable structure comprises a pair of spaced front poles pivot connected at the top ends of a pair of equally spaced rear legs, said poles being connected together by a top transverse rigid member, and being angularily shiftable from said pair of rear legs; said poles are provided with intermediate means for supporting seat board sections, said board sections being pivotally connected between elongated members of a swingable frame; wherein said boards sections are comprised of a first rectangular front section and a second rectangular rear section, said first and second board sections being linked together by side swing connecting means, said first board section being upwardly and rearwardly oscillable from said intermediate supporting means to be horizontally supported on said transverse rigid member connecting the top of said pair of poles, whereby said swing connecting means bring said second rectangular rear board section to a lower parallel plane and in position forwardly shifted from said first rectangular section; said intermediate supporting means comprising an intermediate board supported on a transverse member having its ends fixedly joined to the intermediate portion of said poles and a lower board is slidingly assembled to the lower length of said pair of poles, serving such lower board as the first tread of a ladder structure.
REFERENCES:
patent: 1557342 (1925-10-01), Schlamp
patent: 1937886 (1933-12-01), Grose
patent: 2805703 (1957-09-01), Wise
patent: 2998862 (1961-09-01), Early
patent: 3058544 (1962-10-01), Rossi
Escalesilla Tresaes Ltd.
Machado Reinaldo P.
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