Foldable platform for raise drilling

Details Foldable platform for raise drilling Foldable platform for raise drilling

1977-01-14

1978-06-20

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Scaffold supported internally on shaft

182131, 182150, 182223, E04G 310, E04G 314

Patent

active

040956709

ABSTRACT:
This invention provides a platform structure having a retractable floor portion consisting of four main floor panels extending outwardly in directions defining a cross, and pivotable between a horizontal and vertical position. There are also provided secondary floor panels for the quadrants between the main floor panels, the second floor panels being mounted to another main or secondary panel along aligned edges. The secondary floor panels can pivot through 90.degree. or 180.degree., to permit all panels to be folded into an upright position, to lie along a central framework portion.

REFERENCES:
patent: 3907066 (1975-09-01), Newton
patent: 3994365 (1976-11-01), Petermann

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