Abstract: A unit fuel injector includes a body, the body having a fuel supply and return chamber, a fuel supply passage communicating with the chamber, and a drain passage communicating with the chamber. The body is provided with a pump mechanism, an injection nozzle mechanism for injecting high pressure fuel from the pump mechanism, and an electromagnetic valve mechanism for escaping the high fuel pressure from the pump mechanism. The electromagnetic valve mechanism include a poppet-type valve member. Immediately when a head of the valve member is disengaged from a valve seat facing the fuel supply and return chamber, the pressurized fuel within the pump mechanism is spilled or fed to the fuel supply and return chamber. The unit fuel injector further includes an auxiliary valve mechanism for opening and closing the drain passage. The auxiliary valve mechanism includes a valve port at one end of the drain passage, and when the head of the valve member abuts against a stop portion of the body, the valve port is closed.

Abstract: A potentially disposable, low cost spray tip to be connected to a conventional hollow caulking tube which is loaded with a supply of relatively thick, viscous material, with or without solid particulate matter in suspension, that is to be controllably sprayed onto a desired surface (e.g. drywall). The spray tip includes a material sleeve, which is fixedly attached to the spout of the caulking tube to channel material therefrom, and an air stem, which is attached to an air source to channel a supply of air under pressure. In operation, the relatively thick, viscous material is moved into the air stream, and a mixture of air and material is uniformly and continuously sprayed through an exit orifice in the spray tip to efficiently spray the surface.

Abstract: A gear driven oscillating sprinkler head includes a reversible gear train for transmitting drive from a drive motor to the oscillating sprinkler head with a shifting mechanism, including a shiftable carrier on which a pair of driving pinions are mounted for shifting alternately into driving engagement with an internal ring gear, with a lost motion connection between a shifting arm and the carrier with a cam controlled shift retainer unit for maintaining the carrier in its engaging position until positively shifted by a shifting arm and over-center springs for biasing and maintaining the shifting arm to the alternate driving engagement positions.

Abstract: A rotary liquid spray atomizer for aerial spraying is driven by a variable speed motor, driven in turn by power from a variable speed AC generator. The generator is driven from a power take-off from the engine of the spraying aircraft, a drive assembly includes a device for controlling the speed of the generator relative to the speed of the engine. The particularly convenient drive assembly between the generator and the power take-off is a hydraulic motor, which drives the generator, driven by a hydraulic pump driven from the power take-off. The speed of the hydraulic motor can be controllably varied. Conveniently the AC motor is a synchronous motor.

Abstract: This invention relates to an air treating device. Two halves of a hollow ball are connected. A rotatable ring is provided which has an aperture which in one position is sealed and in another open to release volatilizable material. The halves may be connected by a post upon which a donut shaped disc of fragrant material can be mounted.

Abstract: An inproved rotary paint atomizing device of the type having an internal chamber for receiving paint from a paint feed tube extending coaxially through a drive shaft which rotates the device at a high speed. An annular insert is clamped between the drive shaft and the device for forming a rear wall of the paint receiving chamber. The insert prevents paint from splashing into the annular space between the rotating drive shaft and the stationary paint feed tube. When the device is removed from the shaft. The separate insert permits easy access to the paint receiving chamber for cleaning.

Abstract: A unit fuel injector includes a body. The body incorporates a pump mechanism, an injection nozzle mechanism for injecting fuel fed thereto from the pump mechanism, and an electromagnetic valve mechanism for relieving high pressure fuel from the pump mechanism. The electromagnetic valve mechanism includes a poppet-type valve member. Immediately when an abutment portion of the valve member is disengaged from a valve seat during a pump stroke, the pressurized fuel is spilled into a spill chamber from the pump mechanism. The fuel injector further includes a mechanism for propelling the valve member in such a direction that said abutment portion is moved away from the valve seat, utilizing the spill fuel pressure. The propelling mechanism includes a bore formed in said body, and a flange provided on a stem portion of the valve member, the flange being slidably fitted in the bore to divide the bore into a pressure introduction chamber and a low pressure chamber along the axis of the valve member.

Abstract: A nozzle, for use in a gas-operated spraying apparatus such as an airbrush, is disclosed. The nozzle locates concentrically within an air cap in the gas outlet of a spraying apparatus and cooperates with a tapered needle located in an axial passage thereof to seal the outlet of the nozzle. The needle is retractable in the nozzle to dispense a medium such as paint to be sprayed.

Abstract: A device for irrigating plants comprises a container adapted to be mounted adjacent to each plant to be irrigated and to be filled at a low rate over a long period of time, for example around-the-clock. The container further includes a water discharge conduit having a loop portion at a pre-fixed height above the container bottom, the arrangement being such that when the water has accumulated within the container to substantially the top of the loop portion, there is produced automatically, and without the movement of any parts, a siphonic-flow-discharge of the water container at a high rate and over a short period of time.

Abstract: A fuel injection nozzle comprising a needle valve which is lifted away from a valve seat against the spring force of a pressure spring by receiving pressure from the fuel to be injected. The lift of the needle valve thus causes the fuel to be injected into a combustion chamber of an internal combustion engine. The lift of the needle valve takes place in two stages, in particular by reducing the amount of initial fuel injection, to reduce engine knock. This is accomplished by the provision of a movable, cylindrical plunger which abuts the needle valve at a certain lift thereof and restricts further lift of the needle valve by being subjected to the pressure from the fuel to be injected. Thus, the increase in the rate of fuel injection is restricted to an optimum level.

Abstract: A plastic fountain attachment for a faucet is either cast or injection molded in a single piece or fabricated from separate parts. A tubular body is adapted for attachment to the discharge end of a water faucet and has a discharge opening inclined to its axis. The body has a short wall portion and a diametrically opposed long wall portion extending between said upper and lower ends. A substantially flat closure member is flexibly attached to the outside surface of the short wall portion. The closure member extends downwardly from said short wall portion when unflexed so as not to impede water discharge. The closure member is sufficiently large and so located to enable it to cover the discharge opening when flexed. A fountain outlet directs a jet of water for drinking when the closure member is flexed to cover the discharge opening, the fountain outlet including a hole defined in the long wall portion of the tubular body.

Abstract: The invention relates to a fluid nozzle wherein the formation of eddy currents is reduced to a minimum in the area of laminar flow and the velocity of the fluid is increased to a maximum. This is accomplished by the use of a convergent nozzle wherein the fluid is accelerated and pressure is decreased, then directed over an atomizing body having a convex outer surface where the fluid is allowed to expand and increase its velocity with a further reduction in pressure. Protrusions in the form of a plate or other projections extend from the surface of the convex outer surface to produce fluid flow detachment, separation and high velocity fluid spraying. Adjustment means are provided whereby the axial distance between the nozzle orifice and the atomizing body can be varied according to the desired fluid flow patterns.

Abstract: Apparatus for coupling a grounded color changer and associated supplies of conductive paint to an electrostatic paint sprayer isolates the color changer and paint supplies from a high voltage at the sprayer. The apparatus has at least one reservoir into which a metered volume of one color of paint to be sprayed is introduced while the reservoir and its contents are grounded. After charging the reservoir with paint and prior to supply of the paint to the sprayer, fluid lines between the reservoir and color changer are flushed to electrically isolate the reservoir and paint therein from the color changer and paint supplies. The reservoir and paint therein are then ungrounded and the paint is delivered to the sprayer for being emitted in an electrostatically charged atomized spray. At the end of spraying, the high voltage is removed from the sprayer and the reservoir and its contents are again grounded, following which the reservoir is purged of paint of the one color and reloaded with paint of another color.

Abstract: A rotary stream sprinkler unit comprises a housing having a water flow passage in which is disposed a flow control unit having one or more passages configured to control the volume and pressure of a stream, which strikes and rotates a self-propelled rotary distributor head rotatably mounted at the outlet of the housing for dividing each stream into a plurality of final streams, and rotating each of the final streams through a selected arc during the rotation of the rotary head, with a damping device in the housing connected to the rotary head by means of a shaft supported by a resilient member at the outlet for controlling the rotational velocity thereof.

Abstract: A ball-type water sprinkler of the sector type includes two inlets into the ball chamber oriented to direct the water to flow in opposite directions circumferentially around the chamber, and a shutter rotatable with the rotor and movable either to a first position with respect to the rotor covering one inlet and uncovering the other inlet to cause the water to flow in a first direction, or to a second position uncovering the one inlet and covering the other inlet to cause the water to flow in the opposite direction. The shutter is actuated by a member rotatable with the rotor and cooperable with the sector stops of the sprinkler, the actuator being coupled to the shutter by an over-center spring coupling producing a snap action movement of the shutter to either its first or second positions.

Abstract: A rotary atomizer is provided with a center feed tube which forms a stationary central shaft. A rotating shaft is fitted over the stationary shaft with ball or air bearings and has a rotationally symmetric turbine wheel thereon. Located at the end of the rotating shaft is a rotary atomizing cup which is fed by the center feed tube. The forward face of the cup terminates in the discharge edge and is fed by a nearly continuous slot which is formed by a distributor located in the center of the cup and which is spaced from the main body of the cup by three small pins. A small portion of paint is allowed to flow through a diffuser located in the center of the distributor and which provides continuous wetting of the front of the distributor so as to prevent the flaking of dried paint.

Abstract: An improved shower head comprising a length of hollow tubing in the shape of a vertically disposed loop having spaced apart, vertically supported side sections and a horizontally supported bottom section joining respective lower ends of the side sections in which a preferred embodiment of the loop is annular in shape to include a horizontally supported top portion joining respective upper ends of the side sections, the outer wall portions of the tubing forming the outer face of the loop facing the bather containing spaced apart orifices producing a vertically disposed spray pattern. The orifices are located along the tubing wall region of the interior portion of the loop outer face an offset distance from the center line of the outer tubing wall that forms the face of the loop generating a spray pattern having an inwardly directed component around the periphery of the loop or annulus.

Abstract: In the spray head for the administration of a multicomponent material by means of gas, the delivery channels (7, 7a) for the individual components and the gas channel (8) are arranged separately from one another. The gas channel, provided with a gas supply (3), is divided by a separating web (9) into a plurality of channels (8a, 8b) running parallel to the separating web. Into the channels (8a, 8b) there open out delivery channels (7, 7a). The separating web protrudes beyond the channel ends (6, 6a).

Abstract: An air freshener holder is provided and consists of an elongated perforated housing for supporting consumable items therefrom and material located within the housing for giving off a fragrance to the surrounding atmosphere. The consumable items can be a toilet paper roll, a paper towel roll, a bar of soap and facial tissues.

Abstract: A misting head assembly including a cylindrical rotor having a chordal flat, a center post having a flow passage, a swivel arm having a tubular portion with a radial through opening mounted for swiveling about the rotor and a connecting portion. The swivel arm connecting portion is adapted for removable mounting of a spray nozzle thereto. The rotor flat defines with the center post housing portion and swivel arm tubular portion a longitudinal flow passage for conducting water from the center post to the swivel arm opening to be sprayed outwardly therefrom through the nozzle when the swivel arm is aligned with the chordal flat of the rotor. In one embodiment, seals are provided for sealingly preventing flow of water from the longitudinal flow passage when the swivel arm is swung from alignment with the chordal flat. An indicium is provided on one end of the rotor for indicating the open position of the nozzle.