Abstract: An improved expandable and contractible window covering comprising a series of elongated cells is disclosed. Each cell is formed by joining two pleated sheets of material in the area of opposing creases. The rear wall of the cell is of less height than the front wall of the cell, and the material of the cell is chosen to be relatively soft and flexible, so that the front wall of each cell droops downwardly and outwardly away from the rear wall.

Abstract: The temperature compensating pressure regulator (TCPR) allows a modified constant output pressure regulator to change its output pressure in response to changes in the ambient temperature. Furthermore, the changes in the ambient temperature are extrapolated to estimate the changes in a mass which is in the same ambient environment. The best mode teaches a beer keg application. A wax filled container expands in relation to the temperature changes in a cold storage room. The thermal expansion coefficient of the wax and impurities therein simulate the temperature changes in a keg of beer in the same cold storage room. Upon responding to a temperature change, the TCPR adjusts the keg pressure to the brewer's predetermined pressures, thereby maintaining the proper CO.sub.2 solution in the beer.

Abstract: A window covering consisting of spaced sheets of translucent or transparent material interconnected by vanes wherein the vanes may be configured in non-rectangular patterns. Elongated vanes having scalloped edges may be utilized or a plurality of smaller individual vanes connected between the sheets of material randomly or in rows may also be utilized. In a closed condition of the window covering, the vanes extend substantially parallel to the sheets of material and usually overlap to block the passage of light therethrough whereas, in an open condition the vanes predominantly extend substantially perpendicularly to the sheets of material to permit the passage of light therethrough.

Abstract: An inflatable tourniquet cuff includes an inflatable bladder having an outer layer with a predetermined thickness and an inner layer with a thickness that is less than the predetermined thickness of the outer layer. An opening in the bladder allows for the inflation and deflation of the bladder. A fastener system attached to the bladder releasably secures the bladder about a patient's limb so that the thin inner layer is positioned adjacent the patient's skin. The thin layer is relatively flexible in comparison to the thick outer layer and thus expands to a greater degree than the outer layer upon inflation of the bladder.

Abstract: An expandable collapsible product is made by providing a pleated sheet (8,10) having legs (20) which are made by securing two parts of a fold (17) together. Two sheets are combined by securing the end of a leg (20) to a crease (16) or a leg (20) of an opposite sheet. The sheet material is folded to prefereably provide alternating taller folds (17) and shorter folds (16), and the taller folds are modified to provide the legs (20) by gluing parts of the taller folds (17) together. Gluing is accomplished by moving glue heads across the sheet at high velocity through the use of linear motors. The glue lines are heated after being laid down by the use of electro-magnetic radiation, preferably from a high-powered laser. The finished product is used as insulated window coverings, or the like.