Abstract: Ozone is catalytically removed from air at room temperatures. Air containing ozone in dilute concentrations is contacted with a catalyst formed of a; palladium (II) salt such as palladium (II) chloride, a copper (II) slat such as copper (II) chloride and copper (II) sulfate, and a nickel (II) salt such as nickel (II) chloride, on an alumina substrate, at a temperature in the range of -20.degree. C. to 85.degree. C. The catalyst is formed by making a paste of particulate alumina and a palladium (II) halide containing impregnating solution and then drying the paste and activating the catalyst by heating.

Abstract: A black smoke generator is provided for generating a smoke screen for use on military vehicles, installations and the like. The black smoke generator is a self-sustaining unit and comprises a compressor having an outlet, a turbine having an inlet and a burner assembly operatively connected between the compressor outlet and the turbine inlet. The burner assembly has a housing which defines a combustion chamber while fuel is supplied to the combustion chamber at a rate which produces an excessively rich fuel/air mixture in the combustion chamber. Upon ignition of the fuel/air mixture in the combustion chamber, black smoke is exhausted through the turbine which simultaneously drives the compressor. A method for generating black smoke is also disclosed.

Abstract: Very significant improvements in the hot workability of an age hardenable nickel base alloy containing 14 to 20 percent chromium, 1.4 to 5.3 percent titanium, 1.2 to 4.7 percent aluminum, 8 to 22 percent cobalt, up to 10 percent molybdenum, up to 3.5 percent tungsten, 0.004 to 0.040 percent boron, 0.02 to 0.15 percent carbon and about 52 to about 62 percent nickel are achieved by melting the raw materials under vacuum in the presence of lime, and forming a desulfurizing lime slag on the surface of the molten raw materials, and thereafter adding magnesium thereto just prior to casting the alloy, preferably while maintaining the molten raw material under an inert gas atmosphere.

Abstract: An improved housing assembly for aircraft batteries is disclosed in which an insulated bezel is fastened to a cast aluminum housing using the battery electrical terminals. The bezel serves both to isolate the terminals from the housing and to provide a locating frame for a terminal enclosure. Recessed threaded inserts are used to fasten the terminal enclosure.

Abstract: The electric generator of the present invention has a plural-section main nding; and it uses uni-directional devices to permit current to flow through various sections of that winding as the rotor poles move away from various of the stator poles of that generator but to prevent current flow through those various sections as those rotor poles approach those stator poles. By preventing current flow through those various sections, as those rotor poles approach those stator poles, the present invention relieves the field winding of all need of overcoming the magnetomotive force of that main winding. As a result, fewer ampere turns are needed to enable that field winding to provide the magnetomotive force for that main winding.In some preferred embodiments of the present invention, an exciting winding has sections thereof that are wound on poles which have turns of the field winding wound thereon.

Abstract: An oral hygiene apparatus produces a succession of water pulses at a predetermined pressure and those pulses are delivered to a handle shaped to be grasped by the human hand. An elongated nozzle projects outwardly from the handle, the shape of the handle permitting the water pulses to be directed against the teeth and gums of the user. A reservoir that forms part of the handle contains a liquid to be selectively dispensed along with the water pulses. The reservoir is coupled into communication with the flow path of the water pulses. A controllable valve selectively opens communication to enable the conveyance of the liquid into the flow path and in response to the receipt of the water pulses within the handle.

Abstract: A diverter valve and actuator assembly for diverting flow of a fluid from one path to another under the control of a power driven actuator, including a valve body having a chamber therein with an inlet port and two outlet ports, each outlet port having a valve seat therearound, a valve shaft extending through the body into the chamber, and a valve member carried by the valve shaft and disposed to be mated selectively with either of said valve seats by appropriate rotation of the valve shaft, and the assembly further including an actuator having a power driven shaft carrying a pivot which provides a reciprocatory component of motion with respect to the valve shaft when the actuator is driven.

Abstract: In a tubular composite electrode for depositing stainless steel or nickel-base alloy weld metal, satisfactory performance in vertical up welding is achieved through the inclusion in the electrode core of a slag mix comprising 15 to 60% weight percent zirconium dioxide.

Abstract: An oral hygiene apparatus includes means for producing a succession of water pulses at a preselected pressure together with means for delivering those water pulses into a handle shaped to be grasped by the human hand. An elongated nozzle projects outwardly from the handle, manipulation of the handle permitting the water pulses, flowing through the nozzle from the handle, to be directed against the teeth and gums of the user. Included within the handle are means to define a flow path from the delivery means into the nozzle. A valve disposed within the handle is selectively operable to open or close that flow path during the delivery of the water pulses. Also disclosed is the inclusion of an accumulator within the handle for adsorbing the pressure load of incoming water pulses during closure of the valve.

Abstract: A low cost, integrated, aircraft fuel management system. A system control unit receives engine variable signals and provides a signal to a motor control unit which thereby controls a variable speed motor. The motor drives a positive displacement pump which delivers and meters fuel to a slinger type turbine engine capable of handling slurry fuels. In a preferred embodiment, compressor discharge pressure (CDP) is supplied to the airframe fuel reservoir thereby pressurizing the fuel supply and minimizing the power requirements of the motor driving the fuel pump.

Abstract: A unique fuel system for supplying fuel from a fuel source and to a turbine engine is disclosed and comprises a fuel inlet conduit having one end adapted for connection with the fuel source and a fuel outlet conduit having one end adapted for connection with the turbine engine. The other end of the inlet and outlet conduits are connected to a valve movable between a bypass and operating condition. Both ends of a third conduit are also connected to the valve while a fuel pump is fluidly connected in series with and at a midpoint of a third conduit. In its bypass position, the valve fluidly connects the inlet and outlet conduits together while simultaneously sealingly closing the third conduit and entrapping any fuel contained therein. In its operating condition, the valve simultaneously connects the inlet conduits with one end of the third conduit and the other end of the third conduit to the outlet conduits thus supplying fuel to the engine.

Abstract: A tone arm system for a high fidelity record player is provided having servo-controlled record warp compensation means. One or more feedback loops are employed to apply a variable force vertically and optionally, laterally, to the tone arm in response to the frequency of stylus vibration. The action of the feedback loop or loops is used to modify the parameters of the tone arm system to provide a predetermined resonance quality factory and a predetermined resonant frequency.

Abstract: The present invention is an improvement in radial diffusers employed in a turbine engine having a centrifugal compressor. The walls of the diffuser define at least one flow passage through the diffuser having a first portion with a first cross-sectional area and a second portion having a larger, second cross-sectional area. The first wall section is spaced apart from the second wall section so as to define a bleed aperture therebetween. A vortex fence extends outwardly from the wall surface at the leading edge of the second wall portion. Preferably, the bleed aperture and the vortex fence are disposed on the suction surface of each vane in a vaned radial diffuser.

Abstract: Powdered metal of improved cleanliness and uniformity of particle size is produced by directing a stream of the molten metal into a container having peripherial walls formed of a porous material, such as ceramic foam, having a network of fine passageways extending therethrough. The container is rotated to centrifugally force the molten metal through the porous peripherial walls of the container and to eject the molten metal from the container in the form of fine droplets while inclusions present in the molten metal are filtered and retained in the porous ceramic material, and whereby a metal powder is formed upon cooling and solidifying of the droplets.

Abstract: A boiler is disclosed having a horizontal heat exchanger in the form of hollow tubes positioned across the top of a combustion chamber. Vertical heat exchangers are also provided at either ends of the tubes. The vertical heat exchangers are in the form of hollow water reservoirs which extend vertically between the tubes and the burner to form two walls of the combustion chamber.

Abstract: An electronic temperature control circuit is disclosed for use with swimming pool and spa heaters. The circuit employs a thermistor for sensing water temperature, and provides temperature control with a narrow differential. Safety circuits are also employed to prevent injury to the user or to the heater in the event of a component failure. The temperature control circuit is provided with means for presetting two desired temperature settings and for selecting one of the preset temperature settings for control. Remote control circuits are also disclosed for use with the temperature control circuit which permit temperature selection, temperature setting and a visual indication of heater status from a location remote from the heater.

Abstract: A lead-acid battery having a unique arrangement for making electrical connection to the battery. The arrangement includes L-shaped lugs molded into the upper surface of the casing. The lugs have cylindrical apertures extending horizontally therethrough for mating with the connector posts of the battery plates. Threaded pin terminals insert through a receptacle which is slidably mounted with a slot in a side wall of the battery. The pin terminals are threaded into nuts which are cast within the L-shaped lugs.

Abstract: An oral hygiene appliance is of the kind which includes a supply of liquid, a pump and a hand-held tip for directing the liquid where desired. A housing defines a cavity which has a surrounding wall closed by opposing end walls, the pump being seated within the cavity. A reservoir is closed at one end and has a shape in conformity with the housing to telescope thereover in covering relationship. Defined in one end of the reservoir is a valve seat which cooperates with a valve that closes during removal of the reservoir from the housing. On that end of the reservoir also is a coupling element which cooperates with a coupling member disposed in the surrounding wall of the housing. When that coupling relationship is established, the reservoir is seated on top of a side surface of the housing which, in turn, is lying on a table or the like. An outlet in the housing communicates with the hand-held tip and the pump is connected between that outlet and the coupling member.

Abstract: A wire filament or multifilament wire or cable having an expanded metal or foraminous metal concentrically or semiconcentrically layered along the length of the wire so that the spaces or holes in the metal open radially of the wire or filament. The expanded or foraminous metal can be used in said wires or filaments as a strengthening layer, a conducting layer, or a diffusion barrier layer.

Abstract: A bumper construction for offshore oil rig structures in which an upright metal bumper pipe member of considerable length is encased or sheathed loosely with a tubular rubber enclosure rotatable on the pipe member. The tubular enclosure is formed by a series of rubber sleeves telescoped over and stacked on the upright pipe. Each sleeve has three integrally vulcanized layers of elastomeric materials which have physical properties different one from those of each other layer. The different elastomeric materials are present in predetermined percentages by weight. Each sleeve has a length substantially greater than its inner diameter and preferably more than two times its inner diameter. The sleeves have interfitting conical formations at adjacent ends when stacked.