Self-supported collapsible ladder

Details Self-supported collapsible ladder Self-supported collapsible ladder

1995-05-08

1997-07-08

Stodola, Daniel P.

Fire escape, ladder, or scaffold

Ladder

Slidable nested single rung units

1821803, E06C 100

Patent

active

056451407

ABSTRACT:
A self-supporting collapsible ladder comprising a plurality of ladder sections with pin-locking mechanisms which secure adjacent ladder sections into an extended position. The ladder has a mechanism for self-supporting the ladder assembly by the use of braces attached to the ladder which are rotated and held in place by support rails which can be extended when in use.

REFERENCES:
patent: 595453 (1897-12-01), Fischer
patent: 1381397 (1921-06-01), Briles
patent: 1812119 (1931-08-01), Ruse
patent: 2186119 (1940-01-01), Moen
patent: 2194856 (1940-03-01), Kostuk
patent: 2542398 (1951-02-01), Crumpton
patent: 4147231 (1979-04-01), Chantler et al.
patent: 5370204 (1994-12-01), Fox
patent: 5495915 (1996-03-01), Weston et al.

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