Abstract: Device for automatically bringing the pivoting wheels of a manual truck back to a predetermined direction, each pivoting wheel (1) being mounted in a fork (2) pivoting about a vertical axis with respect to a fixed support (4) integral with the base (5) of the truck, comprising at least one mobile shoe (10) carried by the fork (2) and bearing resiliently on an appropriately shaped cam (12) integral with the fixed support (4) of said fork (2), under the action of a spring (11) working under compression.

Abstract: An assembly for providing automatic operation of hand carts of the type particularly adapted for hospital usage, featuring an electric automotive device being controlled by buried cables and capable of sliding beneath the base of said hand cart, a vertically movable platform on said automotive device for lifting said hand cart when said device is disposed therebeneath, a plurality of realignment knobs on said lifting platform for cooperating with a corresponding plurality of cone-shaped cups on the lower side of said hand cart base, and spaced apart magnetic detectors on said automotive device cooperable with at least one magnet on the lower side of said hand cart base for controlling the slowing down and stopping of the device under said cart when it is positioned therebeneath by moving along said buried cables.