Abstract: The present invention relates to inorganic particles comprising at least two chemical elements in a predefined and analytically identifiable ratio. These particles are used as a marking means incorporated into or applied onto any desired article. They provide a high security potential against counterfeiting since the analysis depend on a combination of spatial as well as of chemical information. In a first step the information containing particle has to be localized by scanning electron microscopy and in a second step the ratio of elements is analysed using energy—or wavelength—dispersive X-ray analysis (SEM/EDX).

Abstract: An oxygen analyzer is provided to detect the oxygen concentration of both a control gas and the output of an oxygen concentrator using ultrasound technology. The analyzer uses a calibration mode to alter the analyzer's output when calibrating it on the control gas. The analyzer is then switched back to its normal mode to permit a therapist to check the percentage of oxygen in the gas being supplied by an oxygen concentrator.

Abstract: A wastewater treatment installation includes at least two tank units having portions located in juxtaposed relation, the units being secured in such position. An inlet to the first tank unit communicates with a drop pipe connecting the inlet to a liquid delivery structure intermediate the top and bottom of the first tank unit, and located diametrically opposite the respective portion. The liquid delivery structure ejects liquid tangentially in opposite directions along the side wall of the first tank unit. An outlet from the second tank unit (or the last of a series of units) is located opposite the respective portion, and an outlet riser pipe connects the outlet to an intake opening, which is located intermediate the top and bottom of the second tank unit.

Abstract: Mechanical energy is supplied to an implement on a rotating spindle, and a generator on the implement converts the mechanical energy into electric power. Preferably the energy is supplied in the form of rotary motion via the work spindle. Alternatively, a fluent medium, for example, coolant or compressed air, can be supplied, in which case the medium is used to drive a turbine wheel coupled to the generator.

Abstract: A stable liquid suspension of an encapsulated flavor oil, oleoresin or spice in a gel matrix is prepared by forming a gel matrix with high shear mixing of a colloidal gelling agent at a temperature of about 15.degree. C., and dispersing the encapsulated flavor oil, oleoresin or spice in the gel matrix during the formation of the gel matrix.

Abstract: An accordion storm shutter assembly includes a frame for installation in an opening in a building wall and at least one folding shutter supported by the frame. The shutter is made up of plural blades articulated along their vertical edges so that the shutter can fold from a closed position in which the blades made a substantial angle--about 75.degree.--with one another so as to have a corrugated configuration blocking the opening, to an open position in which the blades are substantially parallel to one another. Neighboring blades are interconnected by continuous, extruded linear hinges, each having a socket which is substantially an arc of each cylindrical shell having a vertical axis. A knuckle formed along one edge of a neighboring blade pivots in the socket.

Abstract: Apparatus for moving workpieces from a relatively close spacing to a relatively distant spacing includes a block supporting a gear shaft for rotation, the gear shaft defining at least one pinion gear and at least two elongated rack elements which engage the pinion gear at diametrically opposed locations, so that rotation of the gear shaft causes the racks to slide in opposite directions. The racks are connected to gripping devices which can grip the workpieces for movement therewith.

Abstract: An anti-theft device is installed in a vehicle brake line which carries braking fluid. The device defines a valve seat and a valve body adapted to close against said valve seat, the valve body having a passageway therethrough and being rotatable against said seat about an axis substantially perpendicular to the passageway, between a first position in which it permits fluid flow in one direction and inhibits fluid flow in the opposite direction, and a second position in which it permits fluid flow in both directions. The valve can easily be switched between the first and second positions, and can be locked in the first position. By allowing braking fluid to flow only toward the wheels, it will be evident that the wheel brakes, once applied, cannot, be released.

Abstract: A master alloy comprising vanadium, nickel and chromium having equal weight percentages of vanadium and nickel and from about 4% by weight to about 17% by weight of the total weight, of chromium is used to prepare alloys having those metals and other metals selected from the group consisting of zirconium, titanium, cobalt, manganese, aluminum and mixtures thereof.

Abstract: The bath (4) is arranged the supply reservoir (5) for the liquid (3), in which the reaction flask to be heated or cooled can be immersed. The heating or cooling device (8) is arranged on the bottom of the supply reservoir (5). The liquid (3) is delivered with an immersion pump (19) through a feed pipe (6) and an opening (18) in the bottom of the bath (4). The level of the liquid in the bath (4) can be adjusted with the aid of a slider (11). The liquid flows back into the supply reservoir (5) over an overflow (7). When the pump (19) is switched off, the liquid (3) in the bath (4) flows independently back into the supply reservoir (5).

Abstract: A nasal cannulae is described for insufflating a treating gas into one nostril and measuring at least one gaseous component of exhaled breath in the other nostril of a living body. The cannulae includes a wall member cooperating with a hollow body of the cannulae to define inhalation and exhalation manifolds and sealingly engaging the hollow body to provide a gas-tight seal for positively preventing fluid communication between these manifolds. A hollow nasal prong communicates with each manifold and is positioned and shaped to be received in a corresponding nostril. The wall member may be integrally molded with the body of the cannulae when it is made or a conventional cannulae may be modified by insertion of a wall member to create separate manifolds. The nasal prongs may have the same or different lengths.

Abstract: An oxygen-containing diesel fuel additive for reducing particulate airborne emissions which additive is produced in a Fischer-Tropsch synthesis reaction using a promoted iron-based catalyst. The additive contains alcohols having at least five carbon atoms, and is employed in diesel fuel in an amount sufficient to provide an oxygen content in the diesel fuel of up to about 2% by weight while maintaining diesel fuel specification limits for viscosity.

Abstract: Ferroniobium, ferrotantalum and ferrovanadium alloys are hydrogenated to facilitate crushing then nitrided, and then acid-leached to produce a soluble iron nitride leachate and a niobium, tantalum or vanadium nitride residue which residue can be denitrided to yield the metal which can be recovered by melting.

Abstract: Niobium dioxide is produced by heating particulate niobium nitride in an oxygen atmosphere at a temperature above the melting point of niobium dioxide. The product obtained predominantly contains niobium dioxide.

Abstract: A method is disclosed for preparing and recovering metal nitrides from their ferrometal alloys and nickel metal alloys. Exemplary steps of the process involve niobium nitride prepared from ferroniobium alloys (FeNb) which are first hydrided to provide a friable, comminutable product which is then nitrided under conditions which form distinct phases of iron nitride and niobium nitride respectively.

Abstract: Lead free shotshell pellets are disclosed which consist essentially of an alloy of iron and 30 to 46% by weight of tungsten. The shotshells may include a plurality of pellet sizes, and the pellets may be coated substantially uniformly with a polymeric coating, resin, or lubricant.

Abstract: A method of making a Titanium, Vanadium and Chromium alloy substantially free of Titanium-Chromium phases and inclusions of undissolved Vanadium including the steps of alloying preselected amounts of Vanadium and Chromium to produce a stable phase alloy substantially free of unalloyed Chromium or Vanadium and then mixing and melting the stable phase alloy together with a preselected amount of Titanium to produce the final alloy composition.

Abstract: A method for providing an inlay on a substrate includes providing a recess in the substrate, preheating the substrate to a temperature of approximately 150.degree. F., mixing an epoxy resin with an epoxy hardener, and placing the mixture into the recess so that the mixture hardens in the recess and the heat stored in the substrate reduces the viscosity of the mixture, to aid in the removal of bubbles.