Ladder

Details Ladder Ladder

1994-08-29

1996-08-20

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Rung or rung-to-stile connection

182 46, E06C 708

Patent

active

055470416

ABSTRACT:
A ladder of the kind which comprises two elongated and vertically extending, rigid uprights, having axially extending recesses. A rung is provided having apertures defined by sleeves having uninterrupted inner surfaces, for receiving therethrough the uprights. An elongated split sleeve is provided having a protrusion on an inner edge for engaging with the axially extending recess of the upright. The split sleeve slides around and is coaxially aligned with the rigid upright. The arrangement of the ladder is simple to assemble, having few parts, which fit together without requiring additional bolting or securing.

REFERENCES:
patent: 1349125 (1920-08-01), Full
patent: 2992697 (1961-07-01), Klages
patent: 3944024 (1976-03-01), Adas

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