Abstract: A new fuel injection valve possesses a fuel inlet fitting on which a ridge with sloping flank regions is shaped internally. A retaining section of the fuel filter has a groove which coacts with the ridge to form a snap-lock connection. The groove is shaped such that the retaining section of the fuel filter having the groove rests sealingly against the sloping flank regions of the ridge.

Abstract: A fuel injector for delivery of fuel to an internal combustion engine has an injector body defining a central axis, a fuel discharge opening coaxial with the central axis having a valve seat extending thereabout, and a valve element normally seated on the valve seat to close the fuel discharge opening. The valve element is operable to move off of the valve seat to open the fuel discharge opening allowing fuel to pass through. A filter-valve guide is coaxially positioned upstream of the valve seat and includes an annular closed bottom, an outer wall extending coaxially upwardly from the annular closed bottom to define an outer diameter, and an inner wall extending coaxially upwardly from the annular closed bottom to define a central opening. The valve element passes through the central opening and the guide inner wall guides the valve element as it moves relative to the valve seat.

Abstract: An in-line point of use filter includes a restrictor flow valve and pressure gauge port integral therewith. The filter includes an internal threaded spindle which rigidly retains a coalescing filter in place. As a result of the compact spindle and filter arrangement, the entire filter assembly fits under a suction feed paint sprayer and allows the combined sprayer and filter unit to stand without toppling. The threaded spindle threads coaxially with a valve body and conducts compressed air therethrough. The compressed air passes from the threaded spindle directly into the filter media and transversely therethrough, and then from the filter media on to the external filter housing and longitudinally therewith into a small chamber carrying the pressure gauge port, the small chamber which is coupled directly into the sprayer body air inlet.

Abstract: A showerhead system with internal filtration media includes a fluid-tight pressure housing having a fluid inlet and a fluid outlet, the outlet substantially co-axial with the inlet, the housing having a substantially cylindrical internal surface. The system further includes several porous radial disks axially disposed internally to the pressure housing and having circumferential edges in integral communication with the internal cylindrical surface of the pressure housing. The system also include filtration media positional within regions defined between the porous disks. The system additionally includes at least one rigid radial disk axially disposed within the axial distribution of the plurality of porous disks, the rigid disk including groups of apertures. The rigid disk may or may not have an integral securement to the internal cylindrical surface of the pressure housing such that its axial position, within the system, is defined by filtration media packed on either side of it.

Abstract: The present invention relates to a fuel injector for delivery of fuel to an internal combustion engine comprising an injector body and a fuel discharge opening having a valve seat extending thereabout. A valve element is normally seated on the valve seat to close the fuel discharge opening and is operable to move inwardly off of the valve seat to open the fuel discharge opening allowing fuel to pass through. An annular valve guide is seated upstream of the valve seat in spaced relationship thereto and extends about the valve element to guide it as the valve element moves relative to the valve seat. The valve guide has fuel passages to pass fuel. An annular filter shelf located in the injector body, extends circumferentially about the valve seat intermediate of the valve guide and the valve seat.

Abstract: A filter for a liquid spraying device such as an airless paint sprayer. The filter separates unwanted foreign material and clumps from a liquid before the liquid is pumped into a liquid spraying device. The filter is removably mounted on a hose of a liquid spraying device to filter the liquid as it is extracted into the hose. The filter has a frusto-conical surface member having a hollow cavity, a top surface, and an open base terminating at an annular wall around the perimeter of the base. A plurality of holes surround the surface of the frusto-conical surface member wherein the holes are formed at an angle of about 90.degree. to a plane spanning the base. Removably attached to the annular wall is a circular disk having a planar surface terminating at a ring such that the ring projects about perpendicularly from the planar surface. The circular disk has a coupling projecting about perpendicularly around a center point of the planar surface.

Abstract: This assembly is compact and includes filtering, flow-controlling and aerator elements held together with snap-fastener-type connectors.

Abstract: An atomizing sieve of a fuel injection valve having a dish-like concavely cambered form is provided downstream of at least one spray orifice of the fuel injection valve, as seen in the direction of flow of fuel. The atomizing sieve is cast with an outer circumferential region in a protective cap provided at the downstream end of the fuel injection valve. For protection against mechanical effects, protective prongs of the protective cap project further downstream than the lowest region of the atomizing sieve. When the fuel is being injected, a part quantity collects in this lowest region and represents a comparatively static liquid quantity which new fuel then strikes. This arrangement allows an ideal break-up of the fuel into very small droplets. The atomizing sieve also forms a protective shield against icing-up, plugging and settlement of chemical substances within the fuel injection valve.

Abstract: A manually actuated liquid sprayer has a ported element selectively movable between a retracted position and an extended position at which the element lies in the path of the spray plume for mitigating the spray. The element has a cylinder with a smooth inner wall defining a turbulence chamber coaxial with the discharge orifice of the nozzle cap to which the element is mounted. A transversely extending perforate wall is located in the cylinder, and has an open port of a size greater than that of the discharge orifice and being coaxial therewith. The element is movable relative to the nozzle cap between the retracted position at which the liquid spray passes through the open port without influence from any portion thereof, and the extended position at which the liquid spray impacts against the smooth inner wall to mix with air in the chamber and passes through the perforate wall to create foam ejected from the element.

Abstract: A generally frusto-conical contaminant particle deflector is mounted within a valve body of an automotive engine fuel injector, surrounding a fuel injector valve element. An inner clearance space between the valve element and an open end of the deflector receives fuel flow when the injector valve element is moved to allow fuel flow. Contaminant particles are caused to move along a path extending radially out of the fuel stream and into a dead zone outside the perimeter of the deflector where they tend to remain so as to avoid any effects on the performance of the fuel injector.

Abstract: There is disclosed herein a fluid flow apparatus including a discharge nozzle arrangement comprising a single continuous, meandering stainless steel strand to create a planar screen operatively connected at its outer periphery to a diffuser chamber. The screen is adapted to retain a volume of fluid thereabove until the fluid is forced under pressure through the openings between adjacent segments of the strand. Portions of the screen are adapted to flex resiliently downwardly, out of the plane of the outer periphery, to provide additional clearances between adjacent segments of the screen, in the event particulates should tend to build-up, to thereby resist clogging by flushing same. The round cross-section of the strand facilitates continual cleanliness, and serves to produce better-behaved flow out of the nozzle, thereby reducing foaming of the product being discharged during the filling operation.

Abstract: A fuel injection valve has a fuel filter developed as one piece with a holding collar. The holding collar extends radially beyond the fuel inlet connection and has a nose outside the fuel inlet connection. The circumferential nose of the holding collar together with the groove on the outer circumference of the fuel inlet connection forms a detent connection by which the fuel filter is fastened in pin-pointed position. Between the base body of the fuel filter and the inner wall of the fuel inlet connection there is merely a clearance fit, so that formation of chips is avoided within the fuel injection valve. The fuel injection valve is particularly suitable for use in fuel injection systems of mixture-compressing external-ignition internal combustion engines.

Abstract: There is disclosed herein a fluid flow apparatus including a discharge nozzle arrangement comprising a single continuous, meandering stainless steel strand to create a planar screen operatively connected at its outer periphery to a diffuser chamber. The screen is adapted to retain a volume of fluid thereabove until the fluid is forced under pressure through the openings between adjacent segments of the strand. Portions of the screen are adapted to flex resiliently downwardly, out of the plane of the outer periphery, to provide additional clearances between adjacent segments of the screen, in the event particulates should tend to build-up, to thereby resist clogging by flushing same. The round cross-section of the strand facilitates continual cleanliness, and serves to produce better-behaved flow out of the nozzle, thereby reducing foaming of the product being discharged during the filling operation.

Abstract: An aspirated wick atomizer nozzle device having a nozzle body and a screen wire wick sandwiched between the an outlet surface of the nozzle body and the inside surface of a nozzle cap. A liquid entering the nozzle body through a fuel inlet passes by a wicking action of the screen wire wick to a fuel and air exit port where it is entrained and atomized by a gas exiting the nozzle body through an air outlet orifice.

Abstract: A foam dispensing system for a foamable liquid has a means for producing a spray of droplets in which the spray of droplets has key parameters of: the number averaged mean diameter and the mean axial droplet velocity. The foam dispensing system also has a foaming nozzle connected to the means for producing a spray of droplets that is placed in fluid communication with the spray of droplets. The foaming nozzle has a screen which has a plurality of screen openings having a mesh range from 30 to 60 openings per linear inch. Key parameters of the screen are: the percent open area is from about 35% to 60% and the screen openings are larger than the number average mean diameter of the spray of droplets. When the mean axial droplet velocity is at least 8 m/s, the spray of droplets is transformed into a foamed spray as the droplets pass through the plurality of screen openings.

Abstract: A filter is disposed internally of the fuel injector between the inlet and the internal valve so that particulate material having an internal origin may also be prevented from reaching the injector's valve. The filter is an electroformed screen that is supported within the fuel injector's nozzle end and is sandwiched against an internal shoulder of the fuel injector.

Abstract: A spray method and apparatus for uniformly coating a surface with a high degree of efficiency includes filling the pores of a porous sheet with a liquid and then directing compressed fluid from a nozzle into the sheet from one side to spray the liquid onto a surface spaced from an opposite side. Because the total volume of the pores is known, the volume of the sprayed liquid is also known. Moving the nozzle relative to the sheet and the substrate enables the entire surface to be uniformly coated. The size and distribution of the pores on the sheet define the distribution of the liquid sprayed onto the substrate. The coating may be a thick or a thin film of uniform thickness, or may even comprise a recognizable pattern.

Abstract: Foam dispensing nozzles and manually actuable foam dispensers for producing and dispensing improved foams made from a foamable liquid and gas. The foam dispensing nozzles include a velocity decreasing structure so that the average foam velocity through the foam refining apparatus does not exceed a certain value.

Abstract: A fuel injection apparatus for internal combustion engines, having a pump piston, axially guided in a cylinder bore of a pump housing, driven in a reciprocating manner by a cam drive; the pump piston defines a pump work chamber with its face end. The pump work chamber communicates with an injection valve via a pressure conduit and fuel from a reservoir is fed in and removed via a fuel line that has a feed pump; the triggering of the supply onset and end of supply of the unit fuel injector is achieved by means of a magnet valve inserted in the feed line in the region of the pump housing. In order to prevent the deposit of dirt particles in the pump, the unit fuel injector has a fuel filter in the pump housing, which is inserted in a diversion chamber below the magnet valve, and upstream of which a baffle plate is provided in the direction of the magnet valve to protect the filter from the intense diversion stream.

Abstract: A filter-retainer assembly performs both the function of filtering the inlet fuel flow and retaining the inlet tube O-ring of a top-feed fuel injector of the type commonly used in fuel injection systems of internal combustion engines. The assembly has a snap-on, snap-off feature.

Abstract: A top-feed electrically controlled fuel injector includes a filter cartridge disposed in a fuel inlet tube for filtering particulate material larger than a certain size from the fuel that passes into the interior of the fuel injector. In one embodiment, the filter cartridge is press-fit on a shoulder at an axially outer end of an adjusting tube which is telescopically engaged with the inlet tube and axially fixed thereto after adjustment. The filter cartridge is preferably generally tubular in shape, having an imperforate axially outer end, an inner end fitted onto the adjusting tube, and frame sidewalls supporting a fine mesh screen, such that an annular space through which fuel is constrained to flow is formed between the filter cartridge and the inlet tube, with a well at a closed axially inner end of the annular space for collecting particulate material which has been filtered out of the fuel.

Abstract: Quick release nozzle apparatus includes a fixed nozzle housing and a removable nozzle assembly which may be secured to and removed from the fixed nozzle base without the use of tools and with just one hand. The nozzle assembly is locked to the fixed base through a spring bias which urges the nozzle assembly against a pair of locking tabs on the fixed nozzle base. Rotation of the nozzle assembly relative to the nozzle base aligns relieved portions with the lock tabs for removal and installation of the nozzle assembly and aligns a shoulder or face portion with the lock tabs for securing the elements together.

Abstract: An ultrasonic wave nebulizer for converting water or liquid to mist has a disc-shaped piezoelectric vibrator (1) which has a pair of surfaces one of which is defined as an operation surface. A mesh (3) is located close to said operation surface so that a gap (G) or a thin water or liquid film is defined between the mesh and the operation surface. The gap spacing is smaller than the diameter of water drop which is composed by surface tension of water when no mesh were located. Upon excitation of the vibrator with high frequency, the water film is converted to mist. Fresh water is supplied in said gap spacing through capillarity. The exciting frequency is almost the same as the resonant frequency of the vibrator. The present nebulizer is useful for a small atomizer which operates with small power consumption.

Abstract: A low volume irrigation sub-assembly is dimensioned to be removably fitted in an extensible riser of a conventional pop-up spray housing. The sub-assembly has an upstanding low volume emitter extending generally axial to the direction of elongation of the housing and the riser, and includes a filter and flow control device for restricting the pressure of water passing between the interior of the riser and the emitter aperture.

Abstract: That portion of the body of a bottom-feed solenoid operated fuel injector which is placed in communication with pressurized liquid fuel when the injector is mounted in an injector-receiving socket of a fuel rail contains a circumferentially continuous stepped groove in a radially outer portion of which a frameless circular fine mesh filter screen is disposed to cover a radially inner portion and through-holes via which liquid fuel enters the fuel injector. In one embodiment, the margins of the screen are welded to shoulders of the groove against which they are disposed. In another, they are crimped into slots adjacent the groove. In still another, at least one shoulder has a taper so that the corresponding screen margin wedges onto the shoulder. In yet another, a retaining ring is used.

Abstract: A fuel injector including an injector casing having a fuel inlet at a side portion thereof; a valve housing having a fuel injection hole at a front end thereof and having a guide hole at an axial central portion thereof, the guide hole being communicated with the fuel inlet; a valve reciprocably accommodated in the guide hole, the valve being adjusted to close the fuel injection hole when advancing and open the fuel injection hole when retracting; a valve driving device for driving the valve to advance and retract the valve; and a fuel strainer mounted on an outer circumference of the injector casing, the strainer comprising a synthetic resin frame having annular portions at front and rear ends thereof and a metal ring connected to at least one of the front and rear end portions of the frame by insert molding of synthetic resin, the metal ring being press-fitted with the injector casing.

Abstract: Gearboxes having bearings, gears, splines, and seals have been provided with a continuous flow of lubricating and cooling oil supplied through orifice jet units having orifices of a size to preclude clogging by core sand remaining in the cast housing of a gearbox. This has resulted in excessive oil in the gearbox and excessive heat rejection. An improved lubrication system for minimizing heat rejection in gearboxes has the orifices of the orifice jet units sized to deliver only the required flow to the components in the gearbox and a filter is associated with each of the orifice jet units to preclude core sand entrained in the oil and of a size to block an orifice from reaching an orifice. The method of minimizing heat rejection embodies the determination of only that amount of lubricating and cooling oil flow required for the bearings, gear meshes, splines and seals in the gearbox and sizing the orifices accordingly.

Abstract: A windshield washing installation for a motor vehicle includes a reservoir tank for the washing liquid and a feed pump, especially a vane-type pump. A suction pipe of the feed pump is inserted into the reservoir tank under interposition of a sealing member, whereby an agitator arranged inside of the suction pipe is in contact with its free end directly with the washing liquid. In order to avoid a clogging of the spray nozzles of such a windshield washing installation, a lower end area of the suction pipe is surrounded by a sieve element.

Abstract: An electromagnetic fuel injector for internal combustion engines has a core defining therein a central bore and a fuel adjuster disposed therein and having an upstream end spaced downstream from an inlet end of the core. The central bore includes an inlet portion extending between the inlet end of the core and the upstream end of the fuel adjuster and providing an inner peripheral surface operative to guide the fuel in a laminar flow toward and into the fuel adjuster for thereby minimizing the occurrence of pulsated fuel pressure variation and voids which took place heretofore to cause cavitation in the fuel passage in the injector, whereby the range of fuel injection control can be widened.

Abstract: A new and improved stream former is provided for attachment to the discharge end of a faucet or the like. The stream issuing from the stream former provides a formed, coherent, non-splash, silent, gentle flow. The stream former includes a sleeve-like casing, of metal or plastic, with an upstream attachment means, and a pair of axially spaced inwardly projecting supports defined on the inner wall of the sleeve-like casing, downstream of the attachment means. A transverse, fine-mesh, support screen is supported on the downstream support. A plastic, cup-shaped, molded transverse member is supported on the upstream support. A plurality of transverse, axial flow holes are provided through the apertured transverse wall of the cup-shaped transverse member. A closely woven, non-shedding, foraminous mat of nylon fibers is positioned between said transverse wall of the upper transverse member and the fine-mesh screen support.

Abstract: A fuel metering apparatus is shown as having a throttle body with an induction passage therethrough and a throttle valve for controlling the flow of air therethrough; associated fuel metering and control apparatus is shown operatively connected to individual fuel injection valve assemblies respectively associated with respective cylinders of an internal combustion engine; such fuel injection valve assembly is shown as being constructed as to be capable of disassembly thereby enabling the replacement of components thereof, as need replacement, without the necessity of having to replace the entire fuel injection valve assembly when only a portion thereof actually needs replacement.

Abstract: The object of the invention is to provide a self-contained spray applicator for one handed operation in a zero gravity vacuum environment by a free-flying astronaut not attached to any spacecraft while avoiding contamination of the operator by back spray.Said applicator includes a rigid accumulator (12) for containment of a fluid (17) within a flexible bladder (16), the fluid being urged out of the accumulator under pressure through a spray gun (13). The spray gun includes a spring loaded lockable trigger (47) which controls a valve (56). When in an open position, the fluid passes through the valve into the ambient environment in the form of a spray. A spray shield (14) is provided which directs the flow of the spray from the applicator by trapping errant particles of spray yet allowing the passage of escaping gases through its material. This reduces the reactive force exerted by the escaping spray on the operator of the applicator.