Climbing assembly having removable steps

Claim 1

In combination with an elongated upright having an outer wall, a climbing assembly for the upright capable of use as a work platform, comprising: a step configured to be mounted to said outer wall of the upright and including an open, continuous, polygonal frame presenting: a pair of sides, a lateral rung interconnecting said sides and being of a width at least twice the width of a man''s foot to present a work platform, downturned arms at the outer ends of said sides for connecting the sides with said rung to locate the latter in offset relationship below the level of the sides whereby said arms deter lateral skidding of a man''s foot off said rung, a crosspiece interconnecting said sides rearwardly of the rung, and a member depending from said crosspiece intermediate the ends of the latter; and a bracket secured to the upright and configured to releasably receive said member to place the latter and said crosspiece in engagement with said outer wall of the upright, said crosspiece being complementally configured to said outer wall whereby said engagement of the membEr and the crosspiece with the outer wall holds the step in rigid, stabilized relationship to said upright.