Abstract: A windshield washing system for motor vehicles is described in which a non-return valve is installed into the feed pipe, which non-return valve, for ensuring a quick response from the washing system, prevents the feed pipe from emptying, while the pump is switched off. According to the invention a bypass switchable via a valve runs parallelly to this non-return valve, which bypass is opened in winter, i.e. in low outdoor temperatures, but is closed in summer. Consequently during winter mode of operation the feed pipe is emptied. Thus the washing liquid is prevented from freezing.

Abstract: A piston-powered fluid dispensing system is disclosed. The fluid dispensing system comprises an apertured base, a hollow elongated cylinder, an apertured piston, a hollow orificed overcap, an elongated fluid passageway, an externally-channeled hollow extension, and three valves. The elongated cylinder, which defines a longitudinal axis, carries the base at one end portion and defines a hollow neck at the opposite end portion. The piston, disposed in the cylinder for providing two cylinder chambers, defines a circumferential portion that is slidably engageable with the cylinder substantially along the length of an inner surface. The overcap, carried by the cylinder and rotatable about the longitiudinal axis, defines an internal fluid-mixing region and a throat that is in fluid communication with the fluid-mixing region. The throat, carrying the externally-channeled extension, is slidably engageable with an inner surface portion of the cylinder neck.

Abstract: A water spray gun that provides for constant flow both in its on and off condition. The gun includes a valve that in the off position is seated to plug an ejection nozzle, but permit the water to flow from an inlet to a drain outlet. In the on condition, the valve is situated between the inlet and the drain outlet.

Abstract: Drip irrigation apparatus comprising an elongated element of uniform cross section including an extruded closed portion, the extruded closed portion being embossed to define a pressure reducing pathway. A water supply channel may be formed also by extrusion or by sealing of the edges of the elongated element.

Abstract: The assembly comprises a centrally-bored nozzle and centrally-bored nozzle body, the two being in substantially collinear alignment along a longitudinal axis, and a collar and locking ring, for swivelingly coupling the nozzle and body together, andd releasably locking the two together in selected, swiveled displacements from such alignment.

Abstract: In an apparatus for the use of so-called water enamels or some other similarly conductive coating material, the electrical field for charging the sprayed particles is produced between the grounded spraying edge (6) of a bell-shaped atomizer (10) and a large number of external electrodes (10) inserted into an annular element (20) made of an insulating material.

Abstract: A high pressure vortex fuel injector comprising a hollow housing or body including a plurality of passages at least one of which is adapted to receive fuel through an inlet. The injector also includes a passage for guiding the piston into seating relationship with the valve seat to control the flow of fuel through the metering orifice and a solenoid assembly for moving the piston relative to the valve seat. The injector further includes a swirl or vortex chamber, to angularly accelerate the fuel, formed in cooperation with the first surface of the valve seat. The injector additionally includes passages for permitting fuel to circulate about an electric coil thereof, thereby cooling same during instances when the metering orifice is closed. The injector further includes passages within the swirl chamber for assisting in the rapid formation of a conical spray pattern upon the opening of the metering orifice.

Abstract: A method of and apparatus for producing a dense and tenacious coating with a thermal spray gun including a nozzle member and a gas cap. The gas cap extends from the nozzle and has an inwardly facing cylindrical wall defining a combustion chamber with an open end and an opposite end bounded by the nozzle. An annular flow of a combustible mixture is injected at a pressure of at least two bar above atmospheric pressure from the nozzle coaxially into the combustion chamber. An annular outer flow of pressurized air is injected from the nozzle adjacent to the cylindrical wall. Heat fusible powder entrained in a carrier gas is fed axially from the nozzle into the combustion chamber. An annular inner flow of pressurized air is injected from the nozzle into the combustion chamber coaxially between the combustible mixture and the powder-carrier gas. Upon combusting the annular mixture a supersonic spray stream containing the powder is propelled through the open end to produce a coating.

Abstract: Spraying equipment, for example for herbicides, comprises a head for carrying a rotatable disc from which, in operation, fluid is delivered by centrifugal force. The head comprises a first cmponent (4) and a second component (2) which are relatively rotatable about axis (A). The first component (4) has an inlet aperture (33) and the second component (2) has an outlet aperture (40). The second component (2) also has a recess (44) which provides a passage connecting the inlet aperture (33) to the outlet aperture (40). Relative rotation of the components (2 and 4) varies the length and/or the flow cross-section of the passage, so as to regulate the flow of fluid to the rotatable disc.

Abstract: An apparatus for spraying liquidous mixtures via compressed air is described. The design allows extensive use of plastic in its construction, employs a minimum of parts and allows complete assembly and reassembly with only a minimum of hand tools. The device incorporates an automatic air shut off valve that stops the flow of air upon release of the trigger, an adjustable trigger stop that ensures a uniform flow rate and a special orifice plate design that enables its quick replacement.

Abstract: A fragrance emitting unit which when hand actuated expels into the atmosphere a pulse of fragrance. Included in the unit is an air-filled container provided with a small jet opening, the container having a flexible wall which when depressed subjects the air in the container to pressure to cause a pulse of air to be expelled through the opening. Interposed between the jet opening and the interior of the container is an air-permeable, porous member impregnated with liquid fragrance whereby when the unit is first actuated, a pulse of air is forced through the member to extract fragrance therefrom to produce a fragrance mist that is discharged through the opening. When the wall is then released and seeks to resume its normal state, the resultant vacuum created within the container causes air to be drawn into the jet opening and to be forced through the member into the interior so that the charge of air in the container is now laden with fragrance.

Abstract: A multi-gun control valve apparatus for use in controlling a high pressure fluid in a multiple dump-style gun fluid blast system, the apparatus including a valve cartridge assembly, with a pressure throttling member and an adjusting assembly. The apparatus maintains system pressure when any of the guns are dumping fluid rather than blasting. The adjusting assembly includes a spring-biased plunger to bias the valve closure member into a partially closed or throttling position when a gun is dumping, thereby causing a pressure drop across the closure member. The adjusting assembly is used to manually adjust the clearance between the valve closure member and valve seat while the system is under pressure. High fluid pressure in the fluid line between a dump-style fluid blast gun and the multi-gun control valve opposes the spring-biased plunger and opens the valve closure member to provide free flow through the device when a gun is blasting fluid.

Abstract: A fragrance sack for selectively scenting the surrounding area comprises an outer layer of cosmetically attractive material covering an upper surface and a lower surface, filler material contained within the outer layer, a replaceable scenting element anchored to the outer surface layer, and a receiving pocket formed in the seam between the meeting edges of the upper and lower surface of the outer layer. The scenting element carries the desired fragrance and is inserted into the receiving pocket to provide the fragrance sack with the desired odor. In addition, the scenting element may be removed from the pocket to be renewed with the same fragrance or replaced by a new scenting element having a different fragrance. In this manner, the fragrance sack may carry an acceptively strong odor for an extended period of time or may carry a variety of different odors.

Abstract: An improved valve for use in combination with a hand-held nozzle for a lawn treatment system which is designed to allow selective application of a second liquid chemical by the operator in conjunction with the application of a first liquid chemical. The system includes separate pressurized sources for each of the two chemicals as well as a pair of hoses concentric with each other, each hose communicating with one of said pressurized sources and said valve. The nozzle includes means for connecting the hose associated with the first pressurized source, means for connecting the hose associated with the second pressurized source, and an operator controlled valve means for permitting and restricting flow of said second chemical through the valve, a nozzle, and means for connecting a nozzle to the valve.

Abstract: In an apparatus for the use of so-called water enamels or some other similarly conductive coating material, the electrical field for charging the sprayed particles is produced between the grounded spraying edge (6) of a bell-shaped atomizer (10) and a large number of external electrodes (10) inserted into an annular element (20) made of an insulating material.

Abstract: A push-in-place aerosol dispenser valve configured to advantageously utilizes pressure exerted by pressurizing gas, within a pressurized aerosol container, as a force to sealingly secure the valve in place. The valve has a compliant molded plastic primary structure that integrally includes a nozzle that is resilingly responsive to operational manipulation. Defined within the nozzle is a discharge passageway that terminates at an outlet orifice. The passageway is normally blocked by an obstruent that is moveable by manipulation of the nozzle for unblocking the passageway. And, to accommodate push-in-place mounting the primary structure has an inwardly curved bottom, and a sloping annular retaining ledge that underlies the container opening curl. The bottom, ledge and uniformly distribute force exerted against the bottom, by pressurizing gas, form an equilibrium system that prevents the valve from being dislodged from the container.

Abstract: The present invention relates to a telescopic drinking straw or double sucking tube in which a synthetic resin tube section having a smaller diameter is inserted into a synthetic resin tube section having a larger diameter. In the sucking tube, a flange which is in tight contact with the inner surface of the larger tube section is formed on the smaller tube section, while a convex portion supporting the smaller tube section is formed on the inside of the larger tube section. Both the larger and smaller tube sections are produced from materials having different compositions from one another, so that leakage of fluid from a joint portion of the larger and smaller tube sections as well as shaky motion of the smaller tube section are prevented by these arrangements.

Abstract: A nozzle for spraying rust proofing material onto automobile panels including an elongate inner tube having an inlet end and axially spaced radially extending slots positioned to provide portions of the slots entirely encircling the tube.

Abstract: The present invention is a variably convergent exhaust nozzle includes a ring, pluralities of first inner leaves, second inner leaves, lever-arms and hinges and a cable for use with a ducted fan unit and a driving mechanism. The ring has a peripheral edge. Each of the first and second inner leaves is formed out of a semiflexible material and has a first and end and a second end. The first and second inner leaves are distributed along the peripheral edge of the ring. The first leaves are fixedly coupled to the ring at their first ends. The second inner leaves overlap the first inner leaves. The first end of each second inner leaf is fixedly coupled to adjacent first ends of the first inner leaves. Each lever-arm contacts one of the first inner leaves. The hinge pivotally couples each lever-arm to the peripheral edge of the ring so that each lever-arm may pivot adjacent to the first end of one of the first inner leaves in order for its second end to press against the second end of one of the first inner leaves.

Abstract: A yaw and pitch thrust vectoring exhaust nozzle (10) includes upper and lower divergent flap assemblies (22, 24) each divided by oppositely skewed diagonal hinges (58, 60). Vertical sidewalls (27, 28) are also hinged to open the nozzle outlet laterally during yaw thrust.