Movable scaffold rung

Details Movable scaffold rung Movable scaffold rung

1988-10-21

1990-02-27

Machado, Reinaldo

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

182179, 182228, E04G 126

Patent

active

049037951

ABSTRACT:
Construction scaffolding comprising adjacent end frames with joined vertical support members is provided with movable rung members that are extendible and retractable, that engage the exterior surface of the vertical support members, and that are secured to the support members by clamp members having quick-release threaded fasteners.

REFERENCES:
patent: 1116073 (1914-11-01), Johnson
patent: 2635717 (1953-04-01), Albrecht
patent: 3071204 (1963-01-01), Piltingsrud
patent: 3266208 (1966-08-01), Maggs
patent: 4082162 (1978-04-01), Diez
patent: 4632221 (1986-12-01), Stamford

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