US Patent 8006786 Personal standing platform for motorized wheel chair

A passenger standing platform for attachment to a mobility vehicle that provides improved support for the rider, increased weightload, and easy mountability and storage capability, The unit has a paddle shape platform base with 3 fully rotating caster assemblies attached to its underside in a triangular configuration and a non-skid mat attached to its obverse side. The platform base is hingedly attached to a mount plate that connects to the mobility vehicle, and is retained in a non-use generally vertical position off the ground by a pair of spaced coil springs attached at opposite ends to the mount plate and to the platform base.