Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Patent
1991-10-03
1992-05-12
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Independent rung or step
182228, 182120, 182 46, E06C 708
Patent
active
051119080
ABSTRACT:
A pipe step for providing a flat supporting surface on the top side of a horizontal pipe. The step includes a pair of channel members each having arcs cut in the flange portions thereof to meet with the pipe. U-bolts are provided for clamping the channel members to the pipe. A flat-supporting surface form from square mesh grating is bolted to and extends between the upper web portions of the channel members and provides a non-slip flat supporting surface.
REFERENCES:
patent: 1285817 (1918-11-01), Sklar
patent: 2103603 (1937-12-01), Voigt
patent: 4056270 (1977-11-01), Greenfield
patent: 4102432 (1978-07-01), Bustin
patent: 4161232 (1979-07-01), Bustin
Ellis David M.
Leach Roger D.
Reiter John T.
Smith Rick D.
Atlantic Richfield Company
Machado Reinaldo P.
Metrailer A. C.
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