Ladder levelling device

Details Ladder levelling device Ladder levelling device

1997-11-19

1998-12-08

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

182111, 182109, E04C 744

Patent

active

058457445

ABSTRACT:
A ladder levelling device includes a housing, a telescopic member and a lever. The lever is positioned within an interior cavity of the telescopic member. The lever has a mounting end and a gripping end. The mounting end of the lever is pivotally mounted at a ground engaging end of the telescopic member. The gripping end of the lever is accessible through a lever access opening at a handgrip end of the telescopic member. A locking pin is carried by the lever. The lever is pivotable between a locking position and a release position. In the locking position the locking pin carried by the lever extends through an aperture in the telescopic member and engages one of a plurality of apertures in the housing. In the release position the locking pin is retracted from the apertures in the housing.

REFERENCES:
patent: 1223367 (1917-04-01), Brown
patent: 1251192 (1917-12-01), Drummond
patent: 1280741 (1918-10-01), Hunn
patent: 1329740 (1920-02-01), Barron
patent: 1887495 (1932-11-01), Carter, Jr.
patent: 2147052 (1939-02-01), Noone
patent: 3047061 (1962-07-01), Wilcox et al.
patent: 3179206 (1965-04-01), Studer
patent: 3484814 (1969-12-01), Meehan
patent: 3527321 (1970-09-01), Brown
patent: 3882966 (1975-05-01), Fasano
patent: 4014406 (1977-03-01), Easton
patent: 4085820 (1978-04-01), Cerny
patent: 4423797 (1984-01-01), Batten
patent: 4807720 (1989-02-01), Kim
patent: 5325936 (1994-07-01), Baker

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