Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent
1993-01-28
1994-12-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
Terminal foot or shoe
182109, E06C 742
Patent
active
053702034
ABSTRACT:
A ladder shoe that comprises a ladder rail attachment portion which attaches to a ladder rail of a ladder. The ladder shoe is also comprised of a base. The base comprises an elongate portion having a first side and a second side, a first edge and a second edge, a top face and a bottom face. The top face is attached to the ladder rail attachment portion. The base is also preferably comprised of a foot pad. Additionally, the base is comprised of a blade portion extending from the first edge. Moreover, the base is comprised of a first flange portion extending from said bottom face and integrally connected therewith. There is a second flange portion extending from the bottom face and integrally connected thereto. Additionally, the base comprises a third flange portion extending from the bottom face and integrally connected thereto; and a fourth flange portion extending from the bottom face integrally connected thereto. The elongate portion and first and second and third and fourth flange portions are one continuous piece. The first and second and third and fourth flange portions form a pocket in which the footpad is held along the bottom face and sides of the footpad are protected. The hook portion of the first flange portion faces the hook portion of the second flange portion and holds the footpad. The elongate portion, first flange, second flange and blade portion are one continuous piece. The first and second flanges are disposed such that they retain the foot pad along the bottom face. The present invention also pertains to the base itself.
REFERENCES:
patent: 412199 (1889-10-01), McIlhenny
patent: 1973226 (1934-09-01), Rose et al.
patent: 2309484 (1943-01-01), Van Meter
patent: 2691479 (1954-10-01), Sharp
patent: 2767898 (1956-10-01), Cramer
patent: 4415062 (1983-11-01), Shaw
patent: 4694932 (1987-09-01), Schmitt
patent: 5154255 (1992-10-01), Kiska et al.
Three (3) photographs.
Chin-Shue Alvin C.
Schwartz Ansel M.
Werner Co.
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