Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Patent
1991-12-12
1992-12-29
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Ladder
Supporting surface compensating means
E06C 744
Patent
active
051744120
ABSTRACT:
A simple ladder leveling device which slides onto either leg (8) of a ladder. The device is secured onto the ladder by sliding underneath and around rungs of the ladder. Furthermore, the ladder leveler includes a channel sleeve (3) with a slidable intrack leg (5) for adjusting the ladder leveler to the length desired; the intrack leg (5) is secured onto the channel sleeve (3) by an insertable holding pine (10) traversing the intrack leg (5) and the channel sleeve (3).
REFERENCES:
patent: 3165170 (1965-01-01), Blaney
patent: 3447631 (1967-11-01), Smith
patent: 3474883 (1967-08-01), Weis
patent: 3484814 (1968-05-01), Meehan
patent: 4014406 (1976-05-01), Easton
patent: 4236603 (1978-11-01), Talley
patent: 4607726 (1986-08-01), Davis
patent: 4802471 (1988-02-01), Cardell
patent: 4852689 (1987-01-01), Erion
Barnard Ralph R.
Chin-Shue Alvin C.
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