Vertically oriented ladder apparatus for allowing a climber to adopt an improved climbing stance in use
OwnerGlenn Roddenbyinventor
Life of this patent
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Abstract
A vertically orientated ladder apparatus allowing a climber to adopt an improved climbing stance wherein the climber's arms are poised economically in front of the climber within the climbing passage; the climber's legs are spread for the lateral stability of the climber so as to reduce the tendency of the climber falling sideways; and the climber is substantially upright such that the climber's center of gravity lies substantially between the opposing steps (11) so as to allow the climber to release the climber's grip on the hand rails (14) while remaining balanced and supported by the legs of the climber. Opposing steps (11) are level or staggered. Embodiments include three or four stiles (12, 15).
Claims11
A vertical step ladder comprising two vertical side stiles and two vertical front stiles, the two front stiles being closer together than the two side stiles, two vertical sets of inwardly extending horizontal half treads spaced apart for climbing therebetween, horizontal rung members each having a front portion connected between the two front stiles and a side portion which bends at a right angle adjacent one of the two front stiles to fix a respective half tread between a terminus of the side portion and an inner side of a respective vertical side stile where each rung member is not directly connected with either of the two vertical side stiles, the side portions of vertically adjacent horizontal rung members being located adjacent opposite side stiles such that spacing between vertically adjacent side portions is greater than that between vertically adjacent front portions.
Dependencies are inferred from the claim text.