Scaffold step

Details Scaffold step Scaffold step

1998-07-24

1999-08-03

Chin-Shue, Alvin

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

182 90, E06C 700

Patent

active

059312572

ABSTRACT:
A scaffold step including an elongated platform and a number of clamps disposed at spaced-apart positions along the length of the elongated platform. The elongated platform has an openwork construction which sheds dirt and moisture and provides a non-slip surface for standing. Each of said clamps, however, includes hinged, upper and lower members which may be clamped around a tubular scaffold member by means of a simple, nut and bolt arrangement.

REFERENCES:
patent: 693037 (1902-02-01), Lemon
patent: 1134032 (1915-03-01), Clarke
patent: 1157083 (1915-10-01), Clarke
patent: 1285817 (1918-11-01), Sklar
patent: 1509022 (1924-09-01), Noble
patent: 2226489 (1940-12-01), Doherty
patent: 4056270 (1977-11-01), Greenfield
patent: 4903795 (1990-02-01), Cummings
patent: 4943076 (1990-07-01), Tripke
patent: 5111908 (1992-05-01), Reiter et al.
patent: 5702082 (1997-12-01), Evans
patent: 5732996 (1998-03-01), Graffy

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