Abstract: An automated fueling facility allows untrained persons to safely dispense homogenous phase liquid methane from a cryogenic storage tank into a motor vehicle. The fueling facility automatically maintains pressure on the liquid methane within a predetermined safe operating range using methane gas trapped in the cryogenic storage tank. The pressure on the liquid methane is at least set equal to a set pressure equal to the sum of the saturation pressure of the liquid methane plus an additional amount to help to ensure that it remains in a fully saturated condition after absorbing any heat during pumping from the storage tank. A pump is cooled by placing it in the storage tank and circulating liquid methane through the pump and back into the storage tank. A dispenser, including nozzle for connecting to a motor vehicle, is cooled by circulating liquid through the nozzle and back to the storage tank through a receptacle on the dispenser to which the nozzle is connected.

Abstract: A turbulent flow injector includes a ceramic injector body having an outer ylindrical wall with an inner surface, an inner cylindrical wall having an inner surface, an end wall at an outlet end of the body terminating the outer and inner walls so as to define an annular cavity between the inner and outer walls. The annular cavity is open at an inlet end of the body. A duct, defined by the inner surface of the inner wall, has an inlet at the inlet end of the body. A heat conductive insert is positioned within the annular cavity and has an outer surface in thermal contact with the inner surface of the outer wall. The insert has an external section extending beyond the inlet end of the body and cooling fins extending from the external section. An annular air chamber is defined between the insert and the inner wall of the body.

Abstract: A composite valve body of a fuel injector comprises a dead air space for improving hot fuel handling performance. This space is cooperatively defined by a circumferential groove in the O.D. of a metal valve body and a nylon sleeve that is pressed onto the metal valve body to enclose the groove.

Abstract: The present invention relates to a drinking device which, after suitable refrigeration, acts as a heat exchanger to draw heat from a hot liquid, thereby delivering cooled beverage to the user's mouth. The device includes flexible, concentric inner and outer tubes, the inner tube comprising a length of flexible, beverage grade tubing having an outer diameter at least 1/16 of an inch less than the inner diameter of the outer tube and a length at least thirty percent greater than that of the outer tube. An air space between the tubes is filled with a thermally conductive, non-toxic solid, forming the heat exchanger portion of the device.

Abstract: A fuel nozzle having increased thermal resistance which eliminates or minimizes vaporization of fuel passing through the fuel nozzle. The fuel nozzle has a tubular heat shield which surrounds a nozzle stem to form an air gap between the nozzle stem and the heat shield. A radiation layer is located on an inner wall of the heat shield and an outer wall of the nozzle stem. The radiation layer is a layer or plating using a metal having a low emissivity, such as gold (Au).

Abstract: Cooling assemblies of the cooling apparatus each include an air atomizing spray nozzle located within a heated cooling chamber. An outer conduit interconnects the spray nozzle of each assembly and a source of cooling water. An inner conduit within the outer conduit interconnects the spray nozzle and a source of compressed air. Water passing through the outer conduit cools both it and the inner conduit. The outer conduit includes a flexible section that interconnects rigid sections and allows the latter to freely undergo differential expansive and contractive movement. Generally conical spray patterns produced by the spray nozzles form a circular array within the cooling chamber. Adjacent ones of the spray patterns abut each other and another nozzle spray pattern produced by a spray nozzle located generally centrally of the array and of the cooling chamber.

Abstract: In an electrostatic compressed air paint spray gun, the overall exit area of the compressed air discharge opening as well as the pressure and the quantity of the supplied compressed air are dimensioned such and matched such to one another that, first, the ratio (V.sub.L) of the air pressure (P.sub.1) prevailing immediately upstream of the compressed air discharge opening to the air pressure (P.sub.2) prevailing downstream of the compressed air discharge opening is less than 2:1 and, second, quantity and flow rate of the compressed air emerging from the compressed air discharge opening and magnitude of the applied high-voltage guarantee an adequate atomization of the paint as well as a conveying of the atomized paint particles to the workpiece with a given paint throughput and given paint viscosity. A high precipitation efficiency and a good paint compass are thus achieved.

Abstract: An apparatus for providing bleed air to exit an air outlet fitting where an air hose is connected to a turbine housing to cool the turbine and outlet fitting. The bleed air is directed through longitudinal channels outside the air hose and to an air diffuser collar where it is deflected to exit the apparatus radially.

Abstract: Herein are disclosed methods of conditioning fluid, such as damping fluid, in an electronically-controlled unit injector in order to facilitate quick starting of an engine. Fluid normally used to dampen the motion of an electrical actuator assembly of the unit injector can remain in the actuator assembly after the engine is stopped. If too much fluid remains and cools off in the actuator assembly, quick starting of a cold engine may be hindered. Each of the above methods expels and/or heats up at least a portion of the remaining fluid in the actuator assembly while the engine is at rest and thereby enables quicker response of the actuator assembly when the engine is started. Such quicker response improves the fuel injection delivery capability and timing accuracy of the unit injector during engine startup.

Abstract: In a self-propelled swivel for directing high pressure streams of water in a rotary path against a surface to be cleaned, a plurality of permanent magnets are mounted on a rotary cage and rotate in close proximity to a sleeve of electrically conductive material, generating eddy currents in such sleeve and hence heating the sleeve. Low pressure water leaking through a seal provided in the path of the high pressure water is diverted to cool the portion of a casing surrounding the heated electrically conductive sleeve to provide braking of the rotational speed of the rotating nozzle heads without creating excessive localized heating within the housing.

Abstract: There is disclosed in combination with a solid fuel-propellant grain 24 having an axially extending aperture 26, particularly of a hybrid rocket motor, an oxidizer inlet 20 at one end and a combustion gas outlet 22 at the other end, a tubular oxidizer injector 32 disposed in the inlet and extending axially in the grain aperture. The tubular injector comprises a tube 34 containing a plurality of oxidizer injection orifices 38 in the outer circumference of the tube to discharge fluid streams of oxidizer into the fuel grain aperture for combustion of the fuel grain. Additional oxidizer orifices, e.g. in the form of shower head orifices 44, are disposed in the downstream end of the tube.

Abstract: The animal training apparatus can be used either to discourage a dog from barking, or in the training of animals. The apparatus is preferably affixed to the collar of the animal and emits a cold fluid onto the skin of the animal. In the dog-barking embodiment, the apparatus includes a sensor to detect the barking, an electrical signal being generated which results in the application of the cold fluid onto the apparatus includes a receiver which receives signals from a remote source (an animal trainer), and the cold fluid is applied to the animal at the initiation of the animal trainer.

Abstract: A hand held electrostatic spray gun having an electrostatic power supply mounted in the gun. The power supply includes a circuit module mounted in the gun handle which produces heat during operation. The circuit module has a heat conducting housing which is intimately attached to a heat conducting tube extending through the handle. Compressed air delivered through the tube to a nozzle for assisting atomization and/or pattern shaping cools the circuit module.

Abstract: A fuel injector for a petrol engine has an outer annular body and a core member mounted therein. The core member has a central passage which leads from a fuel inlet to adjacent a plate-like valve member which is biased into contact with a seat ring by a spring. The core member is surrounded by a solenoid winding which when energized causes the valve member to lift from the seat ring to allow fuel flow through an outlet orifice. The fuel is conveyed from the inlet to adjacent the valve member by a tubular member which is mounted in spaced relationship within the passage.

Abstract: Thermal spray apparatus for providing a stream of molten fluent material for coating a substrate, including a heat source including a flame for producing a stream of heated gas heated to sufficiently high temperature to melt the material; material advancing means for advancing a stream of heat fusible fluent material into the stream of heated gas to melt the material and produce the stream of molten fluent material; and a flame barrier intermediate the flame and the stream of molten fluent material for preventing reaction between the flame and the material, the flame barrier permits passage therethrough of the stream of heated gas.

Abstract: The process described herein comprises the mixing of a chilled gas into a stream of gas-suspended particles. Preferably the chilled gas is the same as the gas in which the particles are suspended and the particles are electrostatically charged. A novel device is described which provides a chamber extending lengthwise of the device into which channels feed the chilled gas into the particle suspension. The chilled gas is introduced from an external cooling system with the gas being advantageously cooled during passage through a coil whose outer walls are cooled by liquid nitrogen or dry ice. This process and device are of particular utility in a system for the spraying of electrostatically charged particles.

Abstract: This invention relates to an improved heated nozzle for injection molding and an improved method of manufacturing it. The nozzle has an elongated body with a melt bore extending generally centrally through it. The cylindrical outer surface of the body has a variable pitched spiral channel extending around it along its length. A helical electric heating element is embedded in the channel to form an integral structure by which the temperature of the hot melt can be maintained within a narrow range as it flows through the bore. The nozzle is manufactured by forming the body with the channel and bore either by investment casting or machining. The heating element is wound in the channel and a bead of nickel brazing paste is run along the top of it. The nozzle is then heated in a vacuum furnace to braze the heating element in the channel. The highly conductive nickel completely covers the heating element and is fused to both the heating element and the walls of the channel.

Abstract: An insulated fuel injection device, particularly for diesel engines, is provided for maintaining the nozzle spray hole temperature at a reduced level during engine operation whereby coking at the nozzle hole is prevented. The device comprises an elongated injection nozzle having a spray hole at one end thereof and an elongated hood covering the nozzle. The hood has a spray orifice therein which is aligned with the nozzle spray hole when the device is assembled. The interior dimensions of the hood and the corresponding exterior dimensions of the nozzle are such that a generally annular gap is presented between the hood and the nozzle, at least in the vicinity of the hole, and a quantity of heat insulating material is disposed in the gap adjacent the nozzle spray hole and the hood aperture.

Abstract: A plasma torch (40) comprises a handle (41) having an upper end (41B) which houses the components forming a torch body (43). Body (33) incorporates a rod electrode (10) having an end which cooperates with an annular tip electrode (13) to form a spark gap. An ionizable fuel gas is fed to the spark gap via tube (44) within the handle (41), the gas from tube (44) flowing axially along rod electrode (10) and being diverted radially through apertures (16) so as to impinge upon and act as a coolant for a thin-walled portion (14) of the annular tip electrode (13). With this arrangement the heat generated by the electrical arc in the inter-electrode gap is substantially confined to the annular tip portion (13A) of electrode (13) which is both consumable and replaceable in that portion (13A) is secured by screw threads to the adjoining portion (13B) of electrode (13) and which is integral with the thin-walled portion (14).

Abstract: Apparatus for atomizing liquids which includes an ultrasonic excitation system, a bending resonator which oscillates at ultrasonic frequencies, and a device for the delivery of liquid into the velocity nodal region of the bending resonator. The bending resonator has at least one surface which is inclined with respect to the axis of the excitation system. The bending resonator can be in the form of an elongated narrow strip having a plurality of parallel nodal lines. The length of the excitation system is approximately (2n+1) .lambda./4, wherein n is 0 or an integer.

Abstract: To reduce substantially the amount of tubing for condensate being returned from the steam distribution manifold and to enable such condensate to revaporize as steam, thereby increasing the thermal efficiency of the humidifier, a condensate baffle in the bottom of the steam distribution manifold projects with the manifold into the steam separator through a common coupling between the separator and manifold and downstream from the steam admission needle valve of the separator. Structural compactness with economy is achieved.

Abstract: In plasma/water cutting, in order to reduce the space required, it is suggested to construct the thermal cutting jet device so that water, required particularly to constrict the plasma jet, is removed by means of an annular suction nozzle or a ring of annular suction bores arranged around the thermal cutting jet device. In order to reduce the resulting noise, a spraying device can be arranged around the annular suction nozzle whose water is fed back to a tank either by a suction device for the cutting jet device, or by an additional suction device.

Abstract: A self-contained molding machine nozzle which is mountable in the mold die and has optimum material flow and heat control characteristics while reducing repair costs. The nozzle comprises an elongated body having a central passage, and a replaceable exit cap mounted at the forward end of the body, this exit cap carrying a torpedo which guides the material to the exit orifice. An external heater surrounds the body and extends over the cap which is provided with flats to facilitate removal and limit heat transfer. An air gap is provided between the cap and surrounding mold die to prevent undesired chilling of the tip by the cooled die.

Abstract: A liquid feeder comprises an assembly of chemicals-feeding nozzles, each of which is fabricated by securing wall members, having nozzle holes each, between pairs of adjacent tubes, thereby forming a boxlike nozzle. The tubes are those of a flow path or circuit through which the fluid in a boiler or preboiler unit is taken out and is returned to either unit. The liquid feeder is intended for use with various plants, especially boiler plants.