Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent
1993-07-12
1994-08-23
Chotkowski, Karen J.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
Terminal foot or shoe
182200, 248237, E06C 700
Patent
active
053399218
ABSTRACT:
A ladder leveling device used in conjunction with a ladder on sloping ground or roof surfaces. This device may be adjusted to the slope of the ground or roof and is placed under one or both legs of a two-legged ladder. The device is comprised of a horizontal plate upon which the ladder leg rests, a vertical plate attached to the end portion of the horizontal plate, an adjustment plate with adjustment grooves therethrough which is adjustably bolted to the vertical plate. A swiveling anti-skid-plate is connected to the lower edge of the adjustment plate and adjusts itself to the slope of the roof or ground.
REFERENCES:
patent: 298463 (1884-05-01), Guedle
patent: 590872 (1897-09-01), Allen
patent: 2888225 (1959-05-01), McQuin
patent: 4342374 (1982-08-01), Montana
patent: 4457397 (1984-07-01), Scala
patent: 4842229 (1989-06-01), Murray
patent: 4846305 (1989-07-01), Kupfert
patent: 5004072 (1991-04-01), Launer
patent: 5078231 (1992-01-01), Davis
Chotkowski Karen J.
Sterling Thomas E.
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