Radome ladder

Details Radome ladder Radome ladder

1988-07-08

1989-09-26

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

182197, 182 93, E06C 136, E06C 1383, E06C 1397

Patent

active

048693456

ABSTRACT:
This invention relates to a collapsible ladder for carrying out work on the surface of convex buildings as radomes and other domes. The ladder--the radome ladder--consists of a number of straight sections which are hinged together by means of brackets which are articulated externally to a section end piece at the end of each ladder section. These end pieces can be changed to suit the diameter of the dome, and the length of each ladder section, in such a way that the ladder, when unfolded, forms, in essence, an arch parallel with the surface of the dome. In each section end piece there is a castor which rolls along the dome, permitting the radome ladder to be moved sideways with ease.

REFERENCES:
patent: 1160721 (1915-11-01), Kessler
patent: 3042143 (1962-07-01), Silen
patent: 3070188 (1962-12-01), Scruby
patent: 3095060 (1963-06-01), Reinhardt
patent: 3139949 (1964-07-01), Graves
patent: 3286789 (1966-11-01), Planchon
patent: 3340960 (1967-09-01), Wilson
patent: 3633708 (1972-01-01), Heilskov
patent: 3837429 (1974-09-01), Harris
patent: 4646877 (1987-03-01), Whan

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