Abstract: Powered patient support apparatuses—such as beds, cots, stretchers, or the like—include a plurality of user controls that allow a caregiver to control the steering and/or driving of one or more powered wheels from multiple different locations around the patient support apparatus (e.g. head end, foot end, and/or the sides). The control is carried out by force sensors that detect both an orientation of the applied forces and a magnitude of the applied forces. Translational and/or rotational movement is effectuated, depending upon the magnitude and direction of the forces, as well as the physical location of the applied force relative to a reference point on the support apparatus, such as the center. One or more object sensors may also be included in the support apparatus to assist in steering and/or navigating.

Abstract: The present invention provides an air bearing pallet comprising a network of tethers oriented and connected between the upper and bottom sheets of a plenum chamber, which cause a system of indentations to become formed in the bottom sheet when the plenum chamber is inflated. Perforations in the bottom sheet enable air to escape thereby generating an air film below the chamber within the predefined system of indentations. The size, shape, depth, bottom surface tension/stiffness, airflow through, quantity and location of the indentations can be varied in order to optimize lifting performance and efficiency and reduce system level losses over irregularities and gaps in the support surface.