Folding scaffold unit

Details Folding scaffold unit Folding scaffold unit

1990-09-14

1992-06-16

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

182118, 182222, E04G 100, E06C 100

Patent

active

051218127

ABSTRACT:
A folding scaffold unit having first and second pairs of poles each positioned perpendicular to the floor and parallel with each other, each pair of parallel poles being connected by connecting rods, scaffold boards being fixed to horizontal shafts at one ends thereof, the horizontal shaft being inserted into each pair of parallel poles and parallel with the connecting rods, the other horizontal shafts parallel with the horizontal shafts and rotatably connecting the other ends of the scaffold boards, a driving gear mounted on one of the pair of parallel poles for vertically swingably moving the scaffold boards, and gears fixed to the other horizontal shafts and having tooth flank meshing with each other.

REFERENCES:
patent: 1636085 (1927-07-01), Wittek
patent: 2062473 (1936-12-01), Norton
patent: 2781527 (1957-02-01), Landry
patent: 3150741 (1964-09-01), Salerno
patent: 3212605 (1965-10-01), Dickerson
patent: 3221838 (1965-12-01), Brayton
patent: 3312305 (1967-04-01), Waun
patent: 4534447 (1985-08-01), Champigny

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