Adjustable extension stepladder

Details Adjustable extension stepladder Adjustable extension stepladder

1994-11-01

1997-01-07

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder with pivoted prop

Single rear prop, pole type

182 22, 182172, 182208, 182211, E06C 130

Patent

active

055907393

ABSTRACT:
A motorized utility extension ladder having a main and upper riser section extendable by a motor. The ladder further comprising a telescopic prop so that the ladder may be free standing, side wing legs for stabilizing the ladder, wheels for transporting the ladder, and a removable shelf.

REFERENCES:
patent: 215712 (1879-05-01), Andrews
patent: 534463 (1895-02-01), Bowser
patent: 570939 (1896-11-01), Mack
patent: 976240 (1910-11-01), Winkler
patent: 1670653 (1928-05-01), Cummins
patent: 2261479 (1941-11-01), Moen
patent: 3196981 (1965-07-01), Winnall
patent: 3464522 (1969-09-01), Kramer
patent: 3933221 (1976-01-01), Sorenson
patent: 5033584 (1991-07-01), Battle

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