Abstract: An improved underground sprinkler system having double action pop-up nozzles. The system has a plurality of removable sprinkler nozzle assemblies each having a longitudinally externally slotted generally cylindrical body residing in a cylindrical filter having a keyway for receipt in the slot, an externally and internally slotted cylindrical extendable sprinkler head that receives the nozzle/filter assembly, and an internally keyed cylindrical base mount that receives the nozzle/filter/ head assembly. In the specific arrangement of the invention fluid pressure entering a bottom passage of the base mount pushes the sprinkler head upward against the bias of a spring attached to the base mount and the sprinkler head, and then the nozzle assembly in the sprinkler head upward against the bias of a second spring attached to the nozzle assembly and the sprinkler head. The key and slot arrangement automatically rests the nozzle and filter after cleaining.

Abstract: An accumulator type injection nozzle wherein a variable stop that is electrically actuated is provided for controlling the maximum degree of opening of the injection valve for controlling the amount of fuel discharged.

Abstract: A device intended primarily for use in a shower stall that is adapted to dispense a predetermined total amount of a selected additive into a water stream, with the rate of mixing of the additive and water being controlled as a function of the water pressure. A positive displacement pump is used to dispense the additive from a storage chamber, and the additive is dispensed via a controllable applicator device.

Abstract: A salt truck including a salt distributing spinner device mounted on a bed of the truck and receiving salt from a bin carried on the bed. A guide support mounted on the bed supports a staff with an end portion of the staff etending from the guide support opposite the salt distributing device. A flexible panel attached to the end portion of the staff extends downwardly from the staff into the path of salt projected sidewise of the direction of truck advance to catch and stop travel of the salt sidewise of the direction of truck advance.

Abstract: Disclosed is a valve that is particularly useful in a pressure atomizing nozzle of a heating installation and includes a valve housing in which there is a valve seat with an adjoining valve chamber and a flow passage that opens to a housing outlet. In the valve chamber there is provided a spring for resiliently urging the closure member to seat on the valve seat. The valve chamber has a guide section adjacent the valve seat that is of a transverse cross section corresponding to a transverse cross section of the closure member while the housing and closure member provide a free flow passage to the outlet when the closure member is moved axially away from the valve seat at least a preselected axial distance. The valve is of a construction that ensures that fluid can flow through the valve only after a particular desire pressure has been reached, but immediately after the conveying pressure drops below a predetermined value, fluid can no longer reach the housing outlet.

Abstract: A spray manifold for spraying liquid chemicals, suspension and solutions upon workpieces such as printed circuit boards. The spray manifold comprises a tubular pheriphery with a plurality of tubular inner members disposed therein and fluidly connected thereto. Spray nozzles mounted at various points on the manifold provide for emanation at a desired spray pattern from the manifold. The configuration and interconnection of the various tubular components of the manifold is specifically arranged and designed to prevent turbulence of fluid flowing therewithin and to promote even and continuous fluid pressure throughout the manifold.

Abstract: The present invention is directed to an improved breakaway apparatus for a mobile sprayer having at least one spray boom extending outwardly therefrom. The breakaway apparatus has a main plate pivotally mounted to a frame on the vehicle, and coupled by a pivotal link to the spray boom arm with a spring mounted between the main plate and the frame to urge the spray boom arm outwardly from the frame. A shock absorber is pivotally mounted to the frame and to the main plate to absorb loads placed on the spray boom arm when it is pivoted rearwardly relative to the vehicle. A generally lateral stop surface and a cushioned stop are provided on opposed portions of the frame and the main plate, and are aligned to engage when the spray boom arm is pivoted relative to the frame in a forward direction while the spray boom arm is extended for spraying. Preferably, two boom arms are provided which extend in opposite directions, with each spray boom arm having a generally independent breakaway apparatus therefor.

Abstract: A fuel injector includes a needle valve body which is disposed in a sliding bore provided in a valve lower part and in which a needle valve portion abuts against a valve seat in the vicinity of an injection port, an upper portion of the needle valve body being pressed downwardly by a spring; an accululator formed above the needle valve body; a fuel passage communicating with the valve seat; a communicating passage bifurcating from the fuel passage and communicating with the accumulator; and an electromagnetic regulator valve which is disposed in the communicating passage and whose opening and closing timing can be adjusted.

Abstract: A foam producing device for the alternative dispensing of foams or liquids comprising a porous element a partially gas permeable wall, a gas distributing plenum a gas entry port in fluid connection with said plenum; a second wall opposite the outer surface of said gas permeable wall; a mixing chamber comprising at one end, the proximal end, a small annular opening between said gas permeable and second wall, comprising an orifice for the uniform distribution of foamable liquids therethrough into said chamber and at the distal end an exit port for the discharge of foams or liquids from said chamber said chamber being tapered or not, as required; a liquid distribution plenum for the uniform distribution of said foamable liquids to said orifice and a liquid entry port in fluid connection, through a conduit with said plenum wherein said plenum and a source of foamable liquid are in fluid connection through a conduit therebetween; with the proviso that only the portion of said gas permeable wall between said orific

Abstract: A nozzle for atomizing liquid media, in particular a fan-jet nozzle, comprising a nozzle housing determining by its external dimensions and its fitting means the particular nozzle type, and a nozzle internal structure enclosed by the nozzle housing in turn determining the nozzle type functionally, both the nozzle housing and the nozzle inner structure being made of the same material. The nozzle housing on one hand and on the other the nozzle inner structure (nozzle inset) are separate integral parts, and the nozzle inset is force-fitted in undetachable manner into the nozzle housing. Such separate manufacture of the nozzle housing on one hand and on the other the nozzle inset determining the nozzle inner geometry (functional geometry) allows improving applicability and storage costs while simultaneously lowering the manufacturing and storage costs of said nozzle.

Abstract: A safety harness for use with an electrostatic spray paint gun is disclosed which fits over the feed tube and the barrel of a standard electrostatic spray gun and acts both to protect the hand of the spray gun operator from an electrostatic discharge and to provide an indication of the electrostatic operation of the spray gun. A T-shaped safety shield made of non-conductive material is placed over the portions of the spray gun which may develop an electrostatic charge thereon, and is held onto the spray gun by mating strips of material. Located on the inner surface of the safety shield is a thin sheet of conductive foil which acts to channel the discharge through a wire to illuminate an indicator light located remote from the spray gun in a highly visible position.

Abstract: In a wheel-mounted sprayer for depositing liquid agricultural chemicals from storage tanks through feeder conduits and multiple spaced-apart spray heads or nozzles onto the ground, a liquid flow detector flow system includes a primary feeder tube forming a part of each feeder conduit, a secondary feeder tube having a larger diameter than the primary feeder tube and being open to the primary feeder tube and to the upper end of a spray nozzle, the feeder conduit being formed into an upwardly extending loop with the primary feeder tube being connected to the secondary feed toward the top of the loop. A pair of adjacent flow detector electrodes extend through an upper portion of the secondary feeder tube near the top of the loop on the downward flow side, and electrical means detects the presence or absence of electron flow between each pair of electrodes.

Abstract: The conventional spray shield for use on crop sprayers includes a large cover for the entire spray boom. The cover extends downwardly to the top of the crop being sprayed, and consequently impedes access to the spray nozzles and hides the spray pattern. Thus, the operator of the sprayer is not aware of blocked nozzles. A solution to the problem is to provide individual spray hoods over each nozzle, the hoods having essentially the same shape as the spray produced by the nozzle, i.e., conical with an elliptical horizontal cross section at the discharge end. The hoods are sufficiently short that they terminate above a crop in the use position, so that the sprays are visible and the nozzles are readily accessible.

Abstract: A connecting tube connected at one end to an armature of a fuel injection valve having a valve closing element secured to its other end. The connecting tube is easy to manufacture, it is simple to assemble, it has minimal weight and maximum strength. The connecting tube is resilient elastic and has openings along substantially its entire length and is easy to manufacture by rolling up a sheet-metal blank or by using a rigid spring element with spaced spring coils.

Abstract: A manual pump for pressurizing a closed tank. The pump has a unitary handle, piston rod, valve seat, and split disc air release. An "O" ring is positioned between the valve seat and the split disc air release. A pump cylinder is disposed in the top of the tank and the unitary member is in the cylinder with the handle extending above the top. A piston rod sleeve closes the top of the pump cylinder and provides a stabilizing guide surface for the piston rod as it is moved in and out in the pump cylinder. On the compression stroke of the piston rod, the resilient "O" ring contacts the valve seat sealing the pump cylinder. On the return stroke, the "O" ring contacts the split disc and allows air to enter the pump cylinder through the split disc. An improved garden-type or utility sprayer is also disclosed incorporating the pump into a portable tank adapted to contain a liquid to be dispensed.

Abstract: A pulsating sprinkler incorporating a three-position trip mechanism facilitating forward/reverse rotation and continuous rotation. The trip mechanism includes a trigger for reversing direction of rotation of the sprinkler, a latch for engaging an impact arm, and a control arm for maintaining the trigger in a fixed position. The trigger, latch and control arm are joined to a common pivot on the sprinkler body. A multiple position diffuser and deflector lever is adjustable for various degrees of diffusion or deflection of a water stream. The sprinkler body is easily removed from the bushing assembly by compression of snap fingers located at a terminal end of the spring body. Further, an O-ring radially seals a space between the bushing assembly and the sprinkler body. An impact arm having two plates with separated vanes extending between the plates or an impact arm with a single plate with two downwardly projecting vanes may be used for ease in molding and increasing manufacturing efficiency.

Abstract: A spraying device comprises a nozzle casing surrounding an interior which holds a nozzle block and a conduit coupler therein. The nozzle block and the coupler are axially aligned, a front wall of the coupler facing a rear wall of the nozzle block. The nozzle block and the coupler are relatively rotatable, enabling the front wall of the coupler to rotate relative to the rear wall of the nozzle block. A plurality of spray pattern forming apertures pass through the nozzle block, from the rear to the front wall thereof. A fluid passage in the coupler has a liquid outlet on the front wall of the coupler that is sealingly disposed against the rear wall of the nozzle block, eccentrically to the axis of rotation of the coupler in a manner which permits the liquid output to be brought into fluid communication with any one of the spray generating apertures.

Abstract: The present invention relates to a thrust reverser for a turbojet engine that improves the efficiency of the engine in both the forward thrust and reverse thrust operating modes. The invention achieves these goals by providing deflector panels attached to a stationary engine housing structure that are moveable between forward thrust and reverse thrust positions as the thrust reversing doors are moved between their forward thrust and reverse thrust positions. The deflector panels are attached to the housing so as to have a single degree of freedom and are actuated by linkages interconnecting them with the thrust reversing door actuator cylinder.

Abstract: The reversible spray tip assembly has a rotatable turret which may be reversed for cleaning and unclogging. The function of a diffuser is performed by a diffusing member which serves to retain the airless spray tip carbide within the rotatable member and which has an arc shaped aperture located off center and parallel to the circumference of the diametrical passage so as to in effect deflect the stream of fluid flowing through the tip sufficiently to prevent spraying of a coherent stream.

Abstract: An apparatus for spraying heated hot melt adhesive in elongated strands or fibers in a controlled, spiral pattern upon a substrate comprises a spray gun having a nozzle formed with an adhesive delivery passageway and an air delivery passageway both of which terminate at the base of the nozzle. A nozzle attachment in the form of an annular plate is mounted to the base of the nozzle by an end cap. The annular plate is formed with a throughbore which receives hot melt adhesive from the adhesive delivery passageway and ejects an adhesive bead through a nozzle tip formed on the plate. An annular groove formed in the plate facilitates the drilling of air jet bores therein at an angle relative to the throughbore and adhesive bead ejected therefrom.