Stepboard for ladders

Details Stepboard for ladders Stepboard for ladders

1993-05-05

1994-10-25

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182 27, 182119, 182222, E06C 544

Patent

active

053580699

ABSTRACT:
A collapsible ladder having vertical and horizontal ladder parts has a stepboard detachably mounted on the horizontal ladder part. The stepboard has a width which is less than or equal to the separation between uprights of the horizontal ladder part and retaining members for detachably securing the stepboard to the rungs of the horizontal ladder part.

REFERENCES:
patent: 445453 (1891-01-01), Nowland
patent: 570661 (1896-11-01), Cantrell
patent: 2430642 (1947-11-01), Mahaffey
patent: 3554318 (1971-01-01), Knight
patent: 5056620 (1991-10-01), Zumwalt et al.

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