Abstract: An air pressurization and control system for a low air loss air floatation mattress or cushion is disclosed. The control system controls air supplied to the air floatation mattress within a range of pressures and flowrates so as to inflate all of the cells of the mattress and to maintain a flow of air to all of the cells over an extended period of time while maintaining all of the cells at a desired level of inflation for the air floatation support of the patient without any of the cells exerting decubitus pressures above the maximum desired decubitus pressure and so as to prevent collapse of any of the cells. A sensor is provided for sensing the pressure of the air within the common supply.

Abstract: This invention features a data backup procedure and apparatus for backing up and restoring, or otherwise loading a fully configured operating system to the high capacity storage device (e.g., hard disk) of a computer workstation, such as a personal computer. The method includes providing a first media having the desired operating system files to be loaded onto the storage device, providing a second media having configuration-specific data files, initializing the data processing system from the second media to provide a temporary operating system using the configuration-specific data files, loading the desired operating system files from the first media to the storage device using the temporary operating system, and reinitializing the data processing system with the desired operating system from the storage device. Embodiments of the method include providing the first media by copying the desired operating system files, or all the files, stored on the storage device to the first media.

Abstract: An electrically powered window shade with selectively variable shading characteristics is installable within a window opening for selectively blocking (by absorption or reflection), filtering and/or transmitting light through the window shade into a room for purposes of energy control and/or decoration, etc. This window shade comprises an upper roller assembly, a lower roller assembly, and an elongate flexible web wound on the upper and lower roller assemblies, with the web being longer than the spacing between the upper and lower roller assemblies. Each of the roller assemblies comprises an elongate tubular roller, bearings engageable with the end of the roller for rotatably journaling the ends of the roller with respect to the window. The web is scrolled onto and from the rollers as the latter are rotated about their respective longitudinal axes.