Fire escape – ladder – or scaffold – Self-sustaining – Ladder
Reexamination Certificate
2005-06-07
2005-06-07
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Self-sustaining
Ladder
Reexamination Certificate
active
06902036
ABSTRACT:
A ladder is equipped with a stabilizing device. The stabilizing device resists movements of the ladder's feet which would occur in response to movements of a ladder's user while on the ladder. The stabilizing device holds the ladder's feet and provides transverse and longitudinal structure to provide counter forces to the ladder's feet to hold the ladder's feet against movement. The stabilizing device may have rigid bars forming a box structure extending between the ladder's feet or may be formed as a solid panel. The stabilizing device may be retrofitted to existing ladders.
REFERENCES:
patent: 141126 (1873-07-01), Eagon
patent: 2634037 (1953-04-01), Bortel
patent: 2743049 (1956-04-01), Flesher
patent: 4637626 (1987-01-01), Foss et al.
patent: 5141076 (1992-08-01), Joyce et al.
patent: 5370204 (1994-12-01), Fox
patent: 5417302 (1995-05-01), McElfresh
patent: 5791435 (1998-08-01), Garnett
patent: 5791438 (1998-08-01), Kempton
patent: 5927669 (1999-07-01), Sassman
patent: 6116379 (2000-09-01), Huss
patent: 6253876 (2001-07-01), Cosgrave et al.
patent: 6419047 (2002-07-01), Adshead
Chin-Shue Alvin
Fishel Grace J.
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