Patent ID: 6315253
Filing Date: 2001-11-13
Classification: E01F,F16M,Y10T

Abstract:
A foldable supporting device comprising:a base member including a plurality of support flanges having respective outer peripheries;a plurality of legs pivotally mounted to respective support flanges for pivotal movement between operational and storage positions;said legs defining a slot for receiving portions of a respective support flange outer periphery as the leg is pivoted between unfolded and folded positions;the outer peripheries of the support flanges defining at least one locking recess;a plurality of locking pins extending through respective legs, the locking pins having an elongated double-ended body with an enlarged head at one end lying outside the leg and an exposed portion at the other end extending beyond the leg;the locking pins carried by the legs so as to be positioned adjacent the support flange outer periphery and so as to be movable between a locked position received in the locking recess and an unlocked position outside of the locking recess;a plurality of spring bias means carried on respective legs so as to urge the locking pin body into the recess to lock the leg against pivoting about the support flange;the locking pin movable out of the recess when the exposed portion is deflected so as to oppose the force of the spring bias means;the spring bias means comprises a spring strip of flat spring material having first and second ends; andthe first end of the spring strip being fastened to the leg at the point of pivotal mounting to the support flange.