Patent ID: 6234273
Filing Date: 2001-05-22
Classification: E06C

Abstract:
A ladder and leveling system, comprising:a ladder, said ladder having a first leg, a second leg, and a plurality of rungs extending between said legs, a bottom end of said first leg being hollow and defining a cavity therein;an extension leg for extending a length of said first leg, said extension leg comprising:a housing slidably received in the cavity of said first leg and being adapted to selectively move inward and outward of said cavity for increasing and decreasing an effective length of said first leg;a plurality of bores, each of said bores being located in a first wall of said housing, each of said bores in said first wall having an diametrically opposed and axially aligned bore in a second wall of said housing;a pin for selectively locking said housing in position with respect to said first leg, said pin being insertable through a pair of diametrically opposed bores in said first leg, wherein said opposing bores in said housing and said opposed bores in said first leg are aligned for inserting said pin therethrough for locking said housing;said housing being generally hollow, said housing having a length and a width adapted for permitting said housing to be slidably received in said cavity of said first leg, said housing having a first, second, third and fourth wall, said first and second walls being opposing walls and said third and fourth walls being opposing walls, said second wall being located generally in a direction toward said second leg of said ladder, said housing having a first end and second end, said first end being positioned within said first leg and said second end extending outside of said first leg, said housing being generally rectangular;a slot, said slot being located in said first wall of said housing, said slot extending along a length of said housing between said first end and said second end of said housing, said slot being oriented generally parallel to a longitudinal axis of said first leg;said plurality of bores being positioned generally adjacent to said third wall of said housing;a plurality of notches, said notches being formed on an inner surface of said fourth wall;a shaft, said shaft extending through said slot and through a bore in said first leg substantially adjacent to said bottom end of said first leg, said shaft having a first end and a second end, said first end of said shaft being located in said housing;a gear being fixedly coupled to said first end of said shaft, said gear being generally circular, said gear having a periphery, a plurality of teeth radially extend from the periphery of said gear, said teeth being in communication with said notches, said gear having a plurality of bores therein, each of said bores in said gear being positioned adjacent to said periphery of said gear;a handle being fixedly coupled to said second end of said shaft;wherein said pin is generally orientated parallel to said shaft, wherein said opposing bores in said housing and one of said bores in said gear are alignable for inserting said pin therethrough for locking said gear and said housing against movement.