platform corners by being caught behind the suction cups application_number US 57530084 A description the frame of the platform is preferably of rectangular shape as shown in fig2 and is constructed of four elbows 1 connecting the adjacent ends of straight end marginal members 2 and straight side marginal members 3 such elbows and marginal members can all be made of round tubing of nonmetallic plastic material so as to be of light weight and rustproof while having adequate strength legs that can be used to support the platform are composed of tees 4 mounted on the side marginal frame members 3 by such side members passing snugly through the through bore of the tees the lateral bores of the tees are fitted to the ends of tubular legs 5 that can be of any length usually such legs will be of a length greater than one half the length of the end marginal members 2 the tees 4 will be mounted on the opposite side members 3 adjacent to the corner elbows 1 but the tees carried by the opposite side members will be offset so that when the legs are swung into retracted positions generally coplanar with the frame 2 as shown in.