Abstract: A vehicle and a platform and means for lifting said platform relative to said vehicle. Lifting mechanism comprising four pairs of linkages, each defining isosceles triangles placed longitudinally on top of said vehicle and defining the shape of said platform. Front, intermediate and rear balance linkages connecting the upper ends of the links of the four pairs of linkages by common lateral connecting rods. The pairs of isosceles triangles being clevace mounted to the top of a ball bearing actuator nut assembly driven by a 12 volt motor through a central bar that is fastened on each end to the right and left-hand linkages assemblies; and limit switches to control the upward and downward movement of the platform.

Abstract: A vehicle having a swivel caster wheel. The caster wheel has two spaced magnets attached to a fixed part of the caster and a third magnet attached to the caster fork so that the third magnet is influenced by the field of the first and second magnets, moving the caster to a predetermined position when the wheels are lifted from the floor. The wheels caster to proper position when they again engage the floor.