Fire escape – ladder – or scaffold – Wall- or floor-attached – Wall-mounted platform – with ladder
Patent
1981-02-17
1982-10-26
Machado, Renaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Wall-mounted platform, with ladder
182 93, 182106, 182178, 52187, E06C 902, E04F 1100
Patent
active
043557007
ABSTRACT:
This application discloses a modular stairway system for circular structures or other structures having non-linear walls. The invention comprises a plurality of first stringer means with a plurality of first connecting means integral to said first stringer means for joining the first stringers, a plurality of second stringer means horizontally spaced from and parallel to the first stringer means with a plurality of adjustable second connecting means integral to said second stringer means for adjustably joining the second stringers such that the first and second stringers conform to the curvature of the structure. A plurality of stairs are horizontally interposed between the first and second stringers, and a stair mounting means for securing the stairs to the first and second stringers are provided. Also provided are mounting means securing the first stringers to the structure and for supporting the second stringer to the structure, whereby there is obtained a reversible sectional stairway system which can be easily installed on circular structures or other structures having non-linear walls.
REFERENCES:
patent: 2085839 (1937-07-01), Van Dyke
patent: 2593683 (1952-04-01), Lyons
patent: 2867855 (1959-01-01), Xanten
patent: 3307653 (1967-03-01), Gnehm
patent: 3698511 (1972-10-01), Dohan
patent: 3818671 (1974-06-01), Matsushita
patent: 3995832 (1976-12-01), Wiese
patent: 4118816 (1978-10-01), Mittag
patent: 4143740 (1979-03-01), Matthews
Matthews Floyd G.
Matthews Wesley D.
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