Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response – With handle or steering means
Patent
1987-03-30
1987-12-01
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
With handle or steering means
182 63, 280 472, E04G 124
Patent
active
047097841
ABSTRACT:
There is provided on the side of a mobile platform apparatus a surface engaging pivot in combination with side mounted wheels to grab an elevated surface and temporarily secure the apparatus during the process of loading the mobile platform onto the elevated surface. A high friction surface is provided on a pivot and wheels are mounted vertically above and protruding slightly beyond the pivot to accept the weight transfer only after the apparatus is substantially horizontal.
REFERENCES:
patent: 970690 (1910-09-01), Davis
patent: 3156317 (1964-11-01), Lundeen
patent: 3499659 (1970-03-01), Capadalis
patent: 4194591 (1980-03-01), Fisher
patent: 4569416 (1986-02-01), Stokoe
patent: 4592447 (1986-06-01), Ream
patent: 4620712 (1986-11-01), Blackwell
Machado Reinaldo P.
White Douglas B.
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