Safety landing

Details Safety landing Safety landing

1980-07-18

1982-04-06

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Scaffold supported internally on shaft

182 82, 182222, E04G 314, E04G 136

Patent

active

043231403

ABSTRACT:
A novel safety platform for use in a vertical shaft such as a manhole. The platform comprises a pair of support beams with the ends of each support beam mounted in the wall of the shaft. At least one panel extends across the shaft and bridges the support beams with a novel wedge clip at one end of the panel to allow the panel to be opened or secured in the closed position. A novel pivotting means is provided at the other end of the panel which pivotally secures the panel to the opposite support beam. The platform may be installed easily with fewer problems than the prior art yet provides increased safety factors for the user.

REFERENCES:
patent: 521820 (1894-06-01), Rowell
patent: 789174 (1905-05-01), Seeley
patent: 2908361 (1959-10-01), Reighart
patent: 3038555 (1962-06-01), Da Lee
patent: 3044572 (1962-07-01), Thomas
patent: 3166154 (1965-01-01), Titzel
patent: 3289788 (1966-12-01), Evans
patent: 4029355 (1977-06-01), Wilhelmsen
patent: 4159122 (1979-06-01), Stevens

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