Fire escape – ladder – or scaffold – Ladder – With spacer means
Patent
1991-07-25
1992-11-24
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
With spacer means
182107, E06C 748
Patent
active
051655012
ABSTRACT:
A multiple use ladder support attachment (M.U.L.S.A.), for hollow rung ladders, designed to pivot and lock a pair of arms (with a support plate across one end) so as to offset and support a ladder top from a roof of any slope (pitch) or to pivot the support plate upward and support the ladder top a selectable distance from a vertical wall or to further pivot upward and place the support plate between the ladders rail tops and any fragile siding to protect the siding from damage.
A pair of adjustable length pivotal upper arms connected to a pair of adjustable length pivotal lower arms. The upper arms control the distance from ladder to support plate while the lower arms control the angle of the upper arms (and support plate). The pivotal action allows a simple change from one support position to another.
A second configuration uses an optional support plate to support the ladder top from the peak of a roof.
In a third configuration, the M.U.L.S.A. is attached to the bottom of a ladder to significantly improve base stability.
REFERENCES:
patent: 799782 (1905-09-01), Ellinger
patent: 822658 (1906-06-01), Emberson
patent: 1004284 (1911-09-01), Lehmann
patent: 1502490 (1924-07-01), Tack
patent: 1710026 (1929-04-01), McCormick
patent: 2541343 (1951-02-01), Dakin
patent: 2680554 (1954-06-01), Dakin
patent: 2881028 (1959-04-01), Baird
patent: 3459277 (1969-08-01), Frederick
patent: 4311207 (1982-01-01), Lurry
patent: 4331217 (1982-05-01), Stecklow
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