Anti-skid and leveling device for ladders

Details Anti-skid and leveling device for ladders Anti-skid and leveling device for ladders

1994-02-03

1994-08-30

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

182107, 182172, E06C 116

Patent

active

053418999

ABSTRACT:
An anti-skid and leveling device for ladders is provided, containing a pair of devices, each consisting of a guide rail along which an upper carriage and a lower carriage slide independently. The upper carriage provides a mounting platform onto which a brace is rotatably mounted. When pivoted to a specified angle, and lowered so as to contact the ground, the brace will prevent the ladder from skidding in a direction away from the object on which the ladder is resting. A self locking mechanism employing a series of detents is used to secure the upper carriage in a stationary position. The lower carriage provides a mounting platform onto which an outrigger type foot is mounted. The design of the foot provides the ladder with greater lateral stability. The sliding motion of the lower carriage provides height adjustment for the foot, allowing the ladder to be leveled on uneven terrain. Once adjusted, a self locking mechanism employing a series of detents is used to secure the lower carriage in a stationary position. Each foot contains a large round footpad that swivels 360 degrees. An incline indicator is attached to the guide rail to assist in setting the ladder at the proper incline angle.

REFERENCES:
patent: 1329740 (1920-02-01), Barron
patent: 4147231 (1979-04-01), Chantler et al.
patent: 5027923 (1991-07-01), Derome

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