Work support assembly for use with stepladder

Details Work support assembly for use with stepladder Work support assembly for use with stepladder

1999-03-30

2000-11-14

Chin-Shue, Alvin

Fire escape, ladder, or scaffold

Combined

182107, E06C 700

Patent

active

061456209

ABSTRACT:
A height adjustable work support assembly to be used primarily as an integral part of a stepladder. It includes a work support tube (1) with interchangeable platform bases (10). The work support tube extends downward through the top of the ladder (2), and is held in position and guided by a pivoting lock plate (3) attached to the top of the ladder by a supporting plate (4). A pivoting guide bushing assembly located at a lower level, supports the tube (1) in the vertical position. The lock plate (3) and guide bushing assembly can be pivoted upward/downward with the closing of the ladder, permitting the work support tube (1) to be pivoted and held within the confines of the folded ladder. When the work support tube is pivoted, the spring loaded locking washer (6) locks the work support tube in the reverse direction, preventing it from sliding out of the ladder while storing or transporting.

REFERENCES:
patent: 808252 (1905-12-01), Padon
patent: 2167157 (1939-07-01), Muehlberg
patent: 3208555 (1965-09-01), Fry
patent: 3490558 (1970-01-01), Foley
patent: 4418793 (1983-12-01), Brent
patent: 5120013 (1992-06-01), Sweeney
patent: 5171003 (1992-12-01), Kull
patent: 5544718 (1996-08-01), Schumacher

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