Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1990-10-17
1991-10-15
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
248238, E06C 716
Patent
active
050566202
ABSTRACT:
A stepladder platform which can be installed onto the steps of a stepladder to provide an enlarged standing area. A restraining means at the rear engages the stepladder step to prevent forward movement and tilting. A restraining means at the front prevents rearward movement. Also a latch device can be used to prevent tilting from the front. The platform is constructed to support the weight of a person standing on it.
REFERENCES:
patent: 1658753 (1928-02-01), Wirth
patent: 2066108 (1936-12-01), Hedges
patent: 2444096 (1948-06-01), Faust
patent: 2730412 (1956-01-01), Yoder
patent: 3078950 (1963-02-01), Schramm
patent: 3112811 (1963-12-01), Moran
patent: 3294197 (1966-12-01), Kwiatkowski
patent: 4300740 (1981-11-01), Killian
patent: 4437544 (1984-03-01), Anderson
Zumwalt Donald A.
Zumwalt Jean M.
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