Fire escape – ladder – or scaffold – Safety device for ground-supported ladder
Patent
1989-09-25
1990-07-17
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
182117, 182200, 182229, 182121, 182214, E06C 104, E06C 536, E06C 744
Patent
active
049415476
ABSTRACT:
A wall scaffold using a pair of ladders equipped with ladder jacks for supporting a horizontal work platform. The invention includes numerous safety features such as a safety railing on standards attached to the outboard ends of the ladder jacks, a paint bucket trolley for the railing, an adjustable anti-flexing brace between the central part of the ladder and the wall to prevent bouncing of the ladder and platform, a unique safety clamp for tightly securing components to the ladder rungs, a ladder level adjuster, an auxiliary step to assist in mounting and dismounting the work platform, and a safety stake attachable to the lowest ladder rung to prevent bottom "slip-out".
REFERENCES:
patent: 1115559 (1914-11-01), Mills
patent: 2779561 (1957-01-01), Blundeau
patent: 3131784 (1964-05-01), Jackson
patent: 3425510 (1969-02-01), Fedoryk
patent: 3903991 (1975-09-01), Phelan
patent: 4078633 (1978-03-01), Fahy
patent: 4331217 (1982-05-01), Stecklow
patent: 4394887 (1983-07-01), Spinks
patent: 4722420 (1988-02-01), Arthurs
patent: 4792016 (1988-12-01), Ingalsbe
Castle Linval B.
Machado Reinaldo P.
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