Adjustable step ladder
OwnerJames D. McCrystalinventor
Life of this patent
Estimating the term…
Abstract
An adjustable step ladder having four fixed side rails which are wider apart at the bottom than at the top. The step ladder has a conventional series of steps along one side. At the bottom of each of the legs an adjustable leg is located so that the ladder can be positioned in a horizontal manner no matter how irregular the terrain upon which it stands. One or more adjustable steps are affixable to the extending legs and the adjustable steps are telescoping so that they may be made wider nearer the bottom. The result is a completely adjustable ladder which is stable because it is wider at the bottom and which may have steps which are level even though the length of the legs are uneven.
Claims8
An adjustable step ladder of the type having a top, bottom, a head step, four fixed side rails affixed to the head step, two of which are step supporting rails comprising a right step supporting rail and a left step supporting rail and the other two of which are weight supporting rails, a plurality of fixed steps between two of the step supporting fixed side rails, all four of said fixed side rails being straight and angled evenly outwardly toward the bottom and, thus, being further separated from each other at the bottom than at the top, wherein the improvement comprises:
- each of said fixed side rails having an independently extending leg adjustably held thereto comprising right and left independently extending legs, affixed to said weight supporting rails, a right extending step supporting leg affixed to said left step supporting rail, and a left extending step supporting leg affixed to said left step supporting rail;
- and
- at least one adjustable step having a right side and a left side, said adjustable step having length telescoping means, and said adjustable step being attached at its right side to said right extending step supporting leg and at its left side to said left extending step supporting leg of said step supporting rails, and said at least one adjustable step including means to move at least one side of said at least one adjustable step to a different vertical position along said one of said right and left extending step supporting legs so that the adjustable step remains substantially horizontal as one of said right and left extending step supporting legs is moved to a different vertical length than the other of said right and left extending step supporting legs.
Dependencies are inferred from the claim text.