Work-step for extension ladder

Details Work-step for extension ladder Work-step for extension ladder

1985-08-13

1986-05-06

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182122, E06C 112, E06C 1387

Patent

active

045865868

ABSTRACT:
A novel work-step attachment for an extension ladder is described. The work-step attachment generally comprises a platform which is secured to a ladder segment having two vertical side frames in parallel relationship and at least one horizontal rung extending therebetween. The work-step attachment also comprises a hooking element adapted to engage a rung of an extension ladder, as well as a locking element to lock the platform in a first position in which it is aligned with the rung of the ladder segment and in a second position in which it is substantially aligned in the plane of the parallel side frames of the ladder segment.

REFERENCES:
patent: D155566 (1949-10-01), Agricola
patent: 248014 (1881-10-01), Boardman
patent: 794729 (1905-07-01), McDonnall
patent: 1735003 (1929-11-01), Heidel
patent: 1921583 (1933-08-01), Reed
patent: 1953390 (1934-04-01), Bosch
patent: 2148958 (1939-02-01), Myers
patent: 2282133 (1942-05-01), Horton
patent: 2415289 (1947-02-01), Jury
patent: 2500559 (1950-03-01), Miller
patent: 3115214 (1963-12-01), Roberts

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