Patent ID: 6533071
Filing Date: 2003-03-18
Classification: E06C

Abstract:
A ladder comprising:(a) a pair of side frames, a first side frame and a second side frame, each side frame having two surfaces, an inner surface and an outer surface, (b) a plurality of rungs, each of the rungs having two ends, a first end and a second end, the first end of each rung attached to the inner surface of the first side frame, the second end of each rung attached to the inner surface of the second side frame, the rungs being evenly spaced out and parallel to one another, (c) a pair of attachable side legs, a first attachable side leg and a second attachable side leg, each attachable side leg having two ends, a first end and a second end, the first end of the first attachable side leg being pivotally attached to the outer surface of the first side frame, the first end of the second attachable side leg being pivotally attached to the outer surface of the second side frame, each attachable side leg being hollow and having a rectangular cross-sectional shape, each attachable side leg having an outward-facing flat surface, each attachable side leg having a plurality of holes evenly spaced out in linear fashion on the outward-facing flat surface, (d) a pair of adjustable legs, a first adjustable leg and a second adjustable leg, the first adjustable leg track-mounted within the first attachable side leg, the second adjustable leg track-mounted within the second attachable side leg, the first adjustable leg including a first base clip, the first base clip being inwardly pushable, the first adjustable leg including an internal tension pushing outward against the first base clip, the second adjustable leg including a second base clip, the second base clip being inwardly pushable, the second adjustable leg including an internal tension pushing outward against the second base clip, whereby a user would be able to slide each adjustable leg around within the attachable side leg by pushing in the respective base clip and sliding the adjustable leg up or down the appropriate track, (e) locking means for securing the first adjustable side leg to a specific length, the locking means further comprising (i) a first bracket attached to the second end of the first attachable side leg, the first bracket comprising a base having two ends, a first end and a second end, the first bracket also including a pair of arms, a first arm and a second arm, each arm having two ends, a first end and a second end, the first end of the first arm attached to the first end of the base at a ninety degree angle, the first end of the second arm attached to the second end of the base at a ninety degree angle, each of the arms placed to surround the first side frame of the ladder when the first attachable side leg is placed flush against the first side frame of the ladder, the arms extending between an inch to three inches beyond the first side frame of the ladder, (ii) a pair of holes, a first hole and a second hole, the first hole being located near the second end of the first arm, the second hole being located near the second arm of the second arm, (iii) a screw inserted through both the first hole and the second hole, (iv) a nut threadably attached to one end of the screw, (v) whereby a user would tighten the nut, causing the screw to pull together the first arm and the second arm of the first bracket, thereby causing the first arm and the second arm of the first bracket to contract against the first side frame of the ladder, whereby the first attachable side leg would be locked against the second side frame of the ladder, and (f) locking means for securing the second adjustable side leg to a specific length.