Ladder leveling apparatus

Details Ladder leveling apparatus Ladder leveling apparatus

1994-03-25

1995-12-19

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

182108, E06C 700

Patent

active

054761530

ABSTRACT:
An apparatus for leveling a ladder having at least two vertical supports has a vertical support gripping member that has a support wall and a gripping wall attached to the support wall. A plurality of gripping wall teeth is on the gripping wall. A tightening member wall is attached to the support wall and opposes the gripping wall. A first vertical support retaining member is attached to the gripping wall. A second vertical support retaining member is attached to the tightening member wall. The guide channel is formed by the support wall, the gripping wall, the tightening member wall, the first vertical support retaining member and the second vertical support retaining member. One of the vertical support members is slidingly engaged within the guide channel. A threadingly adjustable tightening member, threadingly engaged in a threaded port in the vertical support, releasingly abuts a first outer surface of one of the vertical supports. There is a plurality of vertical support wall teeth on a second outer wall of the vertical supports. The vertical support wall teeth releasably interface with the gripping wall teeth.

REFERENCES:
patent: 898973 (1908-09-01), Curran
patent: 970425 (1910-09-01), Curran
patent: 971997 (1910-10-01), Henning
patent: 1376777 (1921-05-01), O'Connor
patent: 2147052 (1939-02-01), Noone
patent: 3527321 (1970-09-01), Brown
patent: 3948352 (1976-04-01), Larson et al.
patent: 4423797 (1984-01-01), Batten
patent: 4606432 (1986-08-01), Belt
patent: 4607726 (1986-08-01), Davis et al.
patent: 4802471 (1989-02-01), Cordell

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