Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Patent
1977-12-02
1979-05-01
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Ladder
182194, 182228, E06C 502, E06C 708
Patent
active
041518950
ABSTRACT:
A ladder is provided for use with a recreational vehicle in which step treads are formed in two parts. The treads are divided generally along a plane defined by the disposition of the upright ladder rails. The two parts of the stair treads are positioned on either side of the rails and are clamped together in interlocking fashion by means of engageable arms on each step portion which extend toward each other to latch together. Positioned on the upright ladder rails, the ladder steps are securely attached thereto by means of self tapping screws which pass through the opposing step sections and through the ladder rails to sandwich the ladder rails between the step sections.
REFERENCES:
patent: 1349125 (1920-08-01), Full
patent: 3944024 (1976-03-01), Adas
Rasada, Jr. Frank M.
Starr John A.
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