Abstract: A flow guide structure for a bladeless air fan. The bladeless air fan includes a host and an airflow guiding frame. The host includes an airflow generator. The airflow guiding frame is connected to the host and includes an air discharging portion which has an airflow guiding passage inside to communicate with the airflow generator. The air discharging portion also includes an airflow gathering wall, an inner ring compression wall and an outer ring compression wall extended forwards from two ends of the airflow gathering wall. From the junctions of the airflow gathering wall and inner ring compression wall and outer ring compression wall, the inner ring compression wall and outer ring compression wall are spaced from each other at a decreasing interval between them, and the inner ring compression wall and outer ring compression wall also have distal ends forming a front air outlet to discharge airflow forwards.

Abstract: A device for automatically flushing a dead-end of an underground municipal water distribution system includes an inlet for receiving pressurized water from the water distribution system, an outlet fluidly connected to the inlet conduit for discharging pressurized water from the inlet, and a control valve for controlling the flow of pressurized water between the inlet and the outlet. A housing surrounding the outlet redirects the water radially outwardly. An upper mounting plate locates the device within the housing. The upper mounting plate is mounted to an in-ground enclosure; releasing the upper mounting plate from the enclosure allows pulling the device from the underground water distribution system entirely from above.

Abstract: An atomizing spray head suitable for delivering an atomized spray of a fluid with reduced blockage within the spray head. The spray head includes an inlet having a passage therein, a female tapered seat fluidically coupled to the passage of the inlet, and a male tapered plunger seated against the female tapered seat. The male tapered plunger is adjustably biased against the female tapered seat to pressurize a fluid that flows into the passage and causes the male tapered plunger to be unseated from the female tapered seat. A window circumferentially surrounds the male tapered plunger, through which a pressurizing fluid that unseats the male tapered plunger from the female tapered seat is able to exit the spray head as an atomized spray in radial directions relative to the male tapered plunger.

Abstract: A sprinkler head with plural selectable nozzles includes a sprinkler body having inlet and outlet bores aligned along a first axis; a nozzle magazine rotatably supported on the sprinkler body, the nozzle magazine carrying at least two nozzles and provided with at least one shut-off surface portion located between the at least two nozzles. The nozzles are selectively rotatable into an operative position between the inlet and outlet bores, the nozzle magazine being rotatable about a second axis angularly offset from the first axis.

Abstract: A spray nozzle assembly and hub combination for operation in a boiler feedwater deaerator is disclosed, the combination including a tubular hub capable of being affixed to a wall of a deaerator tank and a spray nozzle assembly that is removably engageable with the hub, the nozzle assembly including a nozzle body, a twist lock for retaining the nozzle body relative to the hub when the nozzle body is in a fully engaged position, and a spreader moveably coupled to the nozzle body and biased by a spreader spring against opening, the spreader is capable of moving to an open position against the spreader spring bias in response to boiler feedwater pressure to form an annular opening about the spreader, thereby enabling feedwater flow.

Abstract: The invention relates to a solid cone spray nozzle with a mouthpiece having an outlet chamber and an inlet opening emanating from the outlet chamber and having a smaller cross-section than the latter According to the invention an inlet opening into the outlet chamber has a smaller cross-section than the outlet chamber and downstream of the outlet chamber inlet opening is provided a web-like preatomizer element on which impacts at least partly a fluid jet following entry into the outlet chamber. Use e.g. as a two-fluid spray nozzle for spraying or atomizing low viscosity liquids for cooling purposes in billet or bloom continuous casting installations.

Abstract: A spreader accessory mountable below the extension rack of an ATV. In another aspect, an improved spreader mechanism that automatically starts and stops the feed of material from a storage container in conjunction with the distribution of material therefrom.

Abstract: In an injection nozzle for an internal combustion engine including a nozzle housing, a closure member disposed in a nozzle opening and connected to a nozzle needle for axially moving the closure member outwardly off its seat in the nozzle opening to open the nozzle by providing a gap to permit fuel to be discharged into a combustion chamber of an internal combustion engine so as to form a fuel injection cone, the nozzle seal and the closure member have seal surface areas provided with turbulence chambers for imparting turbulence to the fuel flowing through the gap in order to more finely atomize the fuel forming the fuel cone in the combustion chamber.

Abstract: A spray nozzle for discharging liquid in a spray pattern onto a ground surface includes a structure to obtain optimum diffusion of the liquid droplets in the spray pattern. The spray nozzle includes a diffuser plate having an upwardly extending diffuser blade thereon. The diffuser plate and blade are adjustable vertically and longitudinally in the discharge end of the nozzle to enable variation in the diffusion characteristics of the liquid discharged from the nozzle. The diffuser plate is also removable for replacement with other plates having alternative diffuser blades. The structure enables variation in the spray pattern of the liquid passing between the diffuser blade and the inner surfaces of the side walls of the nozzle by changing the location of the diffuser plate and blade in relation to the discharge end of the side walls of the nozzle or by using another plate having a different diffuser blade for different diffusion characteristics.

Abstract: Cap for a container with a valve, with a container attachment which comprises an actuation surface, an extension pipe for receiving the valve and a discharge channel connected to the extension pipe, a cover element which—pivotally mounted relative to the container attachment—in a first position at least partially covers the actuation surface and in a second position protrudes from the container attachment, and a channel element which has a substantially cylindrical form, is rotatably mounted in the container attachment about its longitudinal axis and comprises a passage channel for a medium to be dispensed, the channel element being coupled to the cover element in such a manner that in a first position of the cover element the passage channel is rotated into a position connected to the discharge channel and in the second position of the cover element is rotated into a position blocking the discharge channel.

Abstract: A system for assisting in the atomisation of liquid particles conveyed in a gas stream flowing along a flow path having a rigid boundary, said system involving the creation of one or more shock waves in the gas stream. In a preferred embodiment, the system comprises a fuel injection nozzle (10) comprising a fluid flow passage (43) terminating at a discharge orifice (15) and incorporating a delivery port (33) defined between a valve seat (31) and a valve member (23) movable with respect to the valve seat for opening and closing the delivery port. Fuel is delivered along the fluid flow passage (43) into a combustion chamber through the discharge orifice (15) upon opening of the delivery port (33). The valve member (23) devines an inner boundary surface (47) of the flow passage (43) and the valve seat (31) defines at least part of an outer boundary surface (45) of the flow passage (43).

Abstract: The invention relates to a device for atomizing a liquid, thereby forming a hollow cone of liquid, comprising a housing into which a first liquid product can be supplied, said housing comprising an outflow end and an insert piece with a guide end that interacts with the outflow end, thereby forming an annular outflow gap, wherein the housing is accommodated in the bottom of a hollow casing; and wherein apertures are present in the bottom, while a second medium can be supplied into the hollow casing, flow out of the apertures and interact with the hollow cone. The invention also relates to a spray drier, with a device according to the invention, to a device for conditioning a liquid product using the invention, and a method for conditioning a liquid product, using a device according to the invention.

Abstract: A jet barrel adapted for use in a spa jet housing having a rotor rotatably supported on a spindle pin aligned along a longitudinal axis in the bore of the jet barrel. The spindle pin is supported at upstream and downstream pivot points. An offset nozzle extends from a conical base of the rotor, an inlet to the rotor being aligned with an outlet from the jet barrel's bore. As water exits the jet barrel bore into the rotor, the rotor and spindle pin are caused to co-rotate. Hard water deposits, sufficient to prevent rotation do not readily build around the pivot points.

Abstract: A spray nozzle includes an orifice disposed on a substantially planar discharge surface. An impingement surface is disposed opposite the orifice, the impingement surface forming an angle with a centerline of the orifice. The angle between the orifice centerline and the surface is less than 90 degrees. A deflection ridge bridges a gap between the impingement surface and the discharge surface. The deflection ridge encompasses a partial circumference of the nozzle. The nozzle includes a fluid fitting adapted for providing a pressurized fluid to the orifice.

Abstract: A nozzle for spraying surfaces is equipped with a piston rod centrally arranged in a feeding duct. The piston rod has an impact plate which is held by a spring in a position aligned with the surface to be sprayed. As a result of liquid pressure, the impact plate arrives in a second end position at a distance from the surface to be sprayed in which. As a result of a ring gap on an input side around the piston rod, the impact plate becomes a deflecting part for the spraying liquid exiting in a ring shape, which, in a circular spraying cone directed at a flat angle with respect to the surface to be sprayed, is then emitted onto the surface to be sprayed.

Abstract: A pop up roof sprinkler system includes a building having a roof, a fire retardant solution, a dispensing tube that has a distal portion extending outwardly from the roof, and a cap member. The cap member has a head portion and an insertion portion. The insertion portion is inserted into the dispensing tube such that the cap member is movable between an open position and a closed position. The open position is defined by the head portion being spaced from the dispensing tube to permit dispensation of the fire retardant solution through the dispensing tube.

Abstract: A safety valve limits but does not curtail flow of fluid from a source through the body of the safety valve upon release of a handle. A pivotable vane disposed within the body is urged to pivot from a first state not restricting fluid flow to a second state restricting fluid flow in response to the force of the fluid flow. A shaft supporting the vane is connected to the handle. Retaining the handle in a position commensurate with the first state of the vane will permit fluid flow through the safety valve, which fluid flow will become limited upon release of the handle due to a change in state of the vane.

Abstract: The invention relates to a device for atomizing a liquid, thereby forming a hollow cone of liquid, comprising a housing into which a first liquid product can be supplied, said housing comprising an outflow end and an insert piece with a guide end that interacts with the outflow end, thereby forming an annular outflow gap, wherein the housing is accommodated in the bottom of a hollow casing; and wherein apertures are present in the bottom, while a second medium can be supplied into the hollow casing, flow out of the apertures and interact with the hollow cone.

Abstract: A sprayer nozzle device includes a housing having an orifice of a reduced diameter formed in an upper plate for reducing and economizing outward flowing water. The housing includes a number of apertures formed in the lower peripheral portion for diverging and outwardly and widely spraying the water. A shield is disposed in the middle and bottom portion of the housing for shielding the middle and bottom portion of the housing, and includes a cone having a cusp directed toward the orifice of the upper plate for guiding the water to the peripheral apertures of the housing.

Abstract: The invention relates to a device by sprinkler nozzle (1) for use in a sprinkler system. The sprinkler nozzle (1) comprises a sprinkler nozzle housing (2) with a passage (3) therethrough for liquid, and a sprinkler nozzle pin (4, 5) which is disposed in the passage (3) of the sprinkler nozzle housing (2). The purpose of the invention is to provide a sprinkler nozzle which spreads the liquid by a sufficient distance from the outlet of the sprinkler nozzle (1) both in a horizontal and in a vertical direction. This is realized by the sprinkler nozzle pin being constituted by an inner sprinkler nozzle pin part (4) which is fixed to the sprinkler nozzle housing (2), and an outer sprinkler nozzle pin part (5) which is displaceably arranged in the sprinkler nozzle housing (2). Further, the sprinkler nozzle pin parts (4, 5) are arranged coaxially to the passage (3) of the sprinkler nozzle housing (2).

Abstract: A nozzle for spraying surfaces is equipped with a piston rod centrally arranged in a feeding duct. The piston rod has an impact plate which is held by a spring in a position aligned with the surface to be sprayed. As a result of liquid pressure, the impact plate arrives in a second end position at a distance from the surface to be sprayed in which. As a result of a ring gap on an input side around the piston rod, the impact plate becomes a deflecting part for the spraying liquid exiting in a ring shape, which, in a circular spraying cone directed at a flat angle with respect to the surface to be sprayed, is then emitted onto the surface to be sprayed.

Abstract: A flush plug is provided for temporarily sealing an outlet at an upper end of an irrigation sprinkler riser extensible from an outer housing. A cap is configured to substantially cover the outlet of the riser. The cap has an output orifice dimensioned to reduce the flow of water from the riser a sufficient amount so that the riser will move to an elevated position under normal operating pressure. The cap is configured so that it can be temporarily connected to the upper end of the sprinkler riser. A shut-off flap is pivotally connected to the cap for covering and uncovering the output orifice. A lever is connected to the shut-off flap and is configured and located to engage an upper end of the sprinkler housing when the riser moves to a retracted lowered position. This positively moves the shut-off flap so that it covers the output orifice in the cap. When the riser moves to the elevated position the lever is no longer engaged with the upper end of the sprinkler housing.

Abstract: The invention relates to a dispenser head for a receptacle (R) for a liquid, the receptacle being of the type comprising a manual bearing face (1) for actuating the delivery means (P) for delivering the liquid, and an ejection nozzle (2) provided with an internal evacuation duct (20) that is suitable for being fed by said delivery means via a connection element (3) that may or may not be removable, the dispenser head being characterized in that the nozzle (2) is constituted by a hollow rod (21) inclined towards the receptacle (R) and adapted to receive a removable cap (4) that is constituted by a tube (40) closed at one end and designed to be slidably fitted over the outside of said rod (21), via its other end.

Abstract: A sprinkler having an output orifice through which water operatively flows, includes a flush cap adapted for movement relative to the output orifice from a free position wherein the cap is disengaged from the sprinkler, to a locked position wherein the cap is generally fixed to the sprinkler and substantially covers the output orifice. The flush cap in the free position is angularly displaced in a single plane from the flush cap in the locked position. A deflector, disposed at an obtuse angle to the axis of the cap, biases the cap to the locked position during a flushing operation. Pulling grip portions of a handle also biases the cap to the locked position. An associated method includes the step of tilting the flush cap in a single plane in order to engage the sprinkler in the lock position.

Abstract: A spraying device includes a nozzle head formed with an axial bore connectible to a source of pressurized liquid, an outlet orifice through which the liquid exits in the form of a jet, and a connecting passageway connecting the inlet end to the outlet orifice. A rod passes through the axial bore; and a liquid distribution member is secured to the rod at the outlet orifice to distribute the liquid laterally of the nozzle head. The rod carries an abutment at the bore inlet end and is displaceable axially and laterally within the bore. The connecting passageway of the axial bore, and the adjacent portion of the rod, include complementary conical surfaces defining between them a metering passageway for the liquid flowing to the outlet orifice such that, during operation of the spraying device, the axial position of the rod within the bore, as determined by the abutment, determines the output rate of the spraying device.

Abstract: There is disclosed a closure device (1) for attachment to the neck (2) of a container (3). The device has inner (4) and outer (5) coaxial parts movable one relative to the other and each has an exit orifice for the flow of fluid therethrough. The flow of fluid is controlled by one part being movable axially relative to the other part. A control device comprising a frusto-conical valve plug (10) on the outer part controls the flow of fluid from the container so that the movable one of the parts is movable between a closed off condition, an open conical pattern condition, and an open jet stream condition of fluid flow. Accordingly, the user of the closure device has a choice of type of fluid flow to be emitted from the container when the container is squeezed. The inner and outer parts are preferably interconnnected by a quick rise cam arrangement to assist quick separation of the parts.

Abstract: A mixer for mixing and blending fluids within a vessel includes a passageway through which fluid is dispensed within the vessel and a flow diverter spaced from the passageway. Fluid impinges on the flow diverter and is directed toward the walls of the vessel. The diverter includes holes that produce jets of fluid generally parallel to the walls of the vessel to induce shear and turbulence within the fluid in the vessel.

Abstract: A method and device are described for atomising liquids, in which the liquid is forced through an annular gap formed between a spherical or conical surface and a circumambient hole in a plate, which components may be displaced relative to one another to control the flow of liquid through the gap. The size of the gap is controlled by a stop.

Abstract: A method and device are described for atomizing liquids, in which the liquid is forced through an annular gap formed between a spherical or conical surface and a circumambient hole in a plate, which components may be displaced relative to one another to control the flow of liquid through the gap. The size of the gap is controlled by a stop.

Abstract: The subject matter of the invention is an apparatus for the integral sprinkling of liquids laden with solid materials in suspension of appropriate granulometry, such as a blanket of marc in wine-making, contained in a vat having a vertically movable cone (1) disposed at the bottom part (8) of a return pipe (2a) of constant section on which it slides by means of a sleeve (3) and is held by means of an arm (23) provided with a projection (4) resting on the periphery (5a) of a cam (5) affixed to a shaft (6) connected to a variable-speed electric motor (7) so that, during the continuous rotation of the motor (7) the cone (1) will be positioned at variable heights with respect to the bottom part (8) of the pipe (2) in order to sprinkle the surface integrally with the liquid, and to distribute a quantity of liquid in a uniform manner at any point on the blanket.

Abstract: A valve for use in the float chamber of a boiling water unit. The valve consists of a body of circular horizontal cross section having a vertical outer wall. The inner portion of the valve body includes a central circular cut-out seat portion to accommodate a cylindrical seal, the wall of the valve seat between the cut-out portion and the outer wall being sloped in the manner of the surface of the frustrum of a cone, the seat being positioned below a nozzle so that when the nozzle is spaced from the valve body, flow from the nozzle contacts the valve body and is deflected along said sloped outer wall to activate a temperature sensor.

Abstract: A rotary sprinkler comprises a nozzle outputting a jet axially thereof; a rotor rotatably mounted with respect to the nozzle in alignment with the axial jet and having a surface formation impinged by the axial jet to deflect the jet laterally of the nozzle and to rotate the rotor; and a retarding device having a first surface rotatable with the rotor with respect to the nozzle, a second surface non-rotatable with respect to the nozzle, and a viscous liquid between the first and second surfaces; characterized in that the first surface of the retarding device is a cavity formed in a surface of the rotor opposite to that having the surface formation impinged by the axial jet, and that the second surface of the retarding device is carried by a pin non-rotatably mounted with respect to the nozzle and disposed within the cavity.

Abstract: A duocone spray nozzle having two concentric peripheral orifices which will produce two hollow spray cones, one inside the other. Each orifice size is varied by employing its own spring and each spring acts independently and is compressed under its own pressure drop. The springs are designed so that the inner spring will open the inner orifice at a pressure drop which is lower than the pressure drop occurring at the outer office. Therefore, the inner spray cone occurs before the outer spray cone. When the pressure drop at the inner orifice exceeds a predetermined value, the outer orifice opens and after this occurs there will be two spray cones. A hold structure aids in separating the two spray cones.

Abstract: A cap for use with water treatment apparatus specifically adapted to cooperate with an open neck of a bottle having an exterior projection formed on the neck thereof. The cap includes a lower component having a circumferentially continuous lower portion which has an interior projection adapted to cooperate with the exterior projection of the bottle, and surfaces for cooperatively engaging a tubular member mounted in the open neck of the bottle. The cap lower portion also includes a top portion having a central part and a peripheral part which has a plurality of circumferentially spaced through-extending openings, the openings disposed substantially 360 degrees around the circumference of the cap.

Abstract: A rotary sprinkler includes a nozzle producing a jet axially of the nozzle, and a rotor configured to deflect the axial jet laterally of the nozzle. The rotor is formed with a socket receiving a pin, and a high viscosity fluid in the rotor socket is effective to apply a retarding force to the rotor during its rotation with respect to the pin.

Abstract: A blow box for the thermal tempering of panes of glass. To temper different sizes of glass, the air supply to selected blow tubes or blow tube groups in a blow box having a blow nozzle field disposed to handle relatively large panes of glass is blocked in the edge areas of the blow box, and in this manner the blow nozzle field supplied with forced air is adapted to the shape and size of the glass pane to be tempered. The adaptation of the blow nozzle field to the shape and size of the glass panes takes place, for example, with the aid of a template-like slide block having an opening corresponding to the glass pane, which slide block is arranged inside the air distributing box immediately in front of the front plate provided with the nozzle pipelets and which can be exchanged for a different slide block.

Abstract: A rotary sprinkler comprises a nozzle formed with a bore extending through a face thereof defining an outlet orifice through which the water is to exit as an axially-flowing jet; a jet-impinging member supported close to and in alignment with the orifice so as to be impinged by the axially-flowing jet and to reflect same back towards that nozzle face; and a rotor rotatably mounted between the jet-impinging member and the face of the nozzle. The rotor is formed with a bore for accommodating the axially-flowing jet, and is further formed on its surface facing the jet-impinging member with at least one channel extending generally in the radial direction, effective to constrain the water reflected back towards the nozzle face to form at least one laterally-flowing jet, and to rotate the rotor so as to rotate the laterally-flowing jet.

Abstract: A liquid spraying device comprises a nozzle formed with an outlet orifice through which the water exits as a jet flowing parallel to the axis of the nozzle, a laterally-displaceable cup member supported close to and overlying the outlet orifice so as to be impinged by the jet and to reflect it back towards the nozzle, and a deflector surface in the path of the reflected-back liquid, which deflector surface is formed with a plurality of channels extending generally radially of the nozzle and effective to deflect the reflected-back liquid and to concentrate the spray produced by the cup member along the channels. Described are a static-type device in which the deflector surface is formed in the face of the nozzle having the outlet orifice, and rotary-type devices in which the deflector surface is formed in a rotor mounted between the cup member and the face of the nozzle having the outlet orifice.

Abstract: An ultrasonic liquid atomizer with an orifice valve has an ultrasonic oscillator with an atomizer plate. An axial bore for liquid supply onto a surface of the atomizer plate is provided together with an impact body for deflecting and distributing supplied liquid on the atomizer plate. The impact body has a stem situated in the axial bore of the oscillator and of the atomizer plate, the impact body being approximately centered over the bore. The stem of the impact body is continued in the form of a retaining wire extending beyond the oscillator at the side opposite the atomizer plate. An end of the retaining wire opposite the stem is secured to a component for executing the motion of the impact body relative to the atomizer plate such that an orifice opening at the surface of the atomizer plate between the atomizer plate and impact body can be closed via the retaining wire and the stem of the impact body.

Abstract: A spray nozzle is disclosed for a sprinkler system in a corrosive or dirty environment. The spray nozzle of the present invention retains its operability over known types of spray nozzles, particularly when used in hot environments or in corrosive, dirty environments. The spray nozzle has a tubular body formed from heat resistant thermoplastic material with an inlet at one end and an outlet orifice at the other end.

Abstract: The disclosure is directed to a sprinkler head for a center pivot irrigation system capable of operation under high or low water pressure. A plurality of sprinkler heads are employed in the system, each of which includes a housing defining a water outlet and constructed to issue a jet of water therefrom. A spray deflector is carried in overlying relation to the outlet by an external frame secured to the housing in a position to intercept the jet of water and deflect it into a predetermined spray pattern. The spray deflector is movable relative to the outlet between a first position protectively covering the outlet and a second position spaced from the outlet to create the spray pattern, the spray deflector being movable from the first position to and maintained in the second position by the jet of water, and returnable to the first position by gravity.

Abstract: A spraying device is described comprising a nozzle formed with an outlet orifice through which the fluid issues in the form of a jet, and a cup-shaped member having a thin wall defining an open end of slightly larger diameter than the outlet orifice. The cup-shaped member is floatingly mounted for lateral and axial movement with respect to the nozzle orifice such that the jet issuing therefrom always impinges the cup-shaped member within its open end. The device further includes limiting means limiting the floating movement of the cup-shaped member.

Abstract: A foam dispenser comprises a nozzle cap which in turn includes a bottom with which collides the spray liquid discharged from an orifice formed in a foam dispenser body. At the bottom of this nozzle cap is a plurality of arms constituting an obstacle wall with which the spray liquid from the orifice collides, and a plurality of foam outlet ports defined by adjacent arms. Therefore, scattered spray streams and freely flowing liquid streams are alternately formed adjacent to one another. Locking devices are provided to lock the nozzle cap onto the foam dispenser body to prevent it from falling off.

Abstract: The disclosure is directed to a spray head device for use in a center pivot irrigation system which is capable of operation under high or low water pressure. The spray head device includes an enclosed housing adapted for connection to a source of water, and which houses water jet apparatus constructed to issue a jet of water and sized for a predetermined range of volume flow. A frame connected to the housing suspends a diffuser element in a position where it is impinged by the jet of water to disperse the water into a flow pattern of predetermined configuration. A resilient washer is carried by the water jet apparatus to provide a substantially constant volume output. The water jet apparatus and diffuser element are removably and interchangeably carried by the enclosed housing and frame, respectively, whereby the rated volume flow of the spray head device may be varied.

Abstract: A sprinkler head assembly rotatable about a generally vertically extending axis, an impulse arm operable in response to the flow of water under pressure for effecting progressive movements of the sprinkler body about said axis, an outwardly facing annular valve seat on the sprinkler body disposed in surrounding relation to the outlet, a poppet valve cooperable with the annular valve seat, a mounting assembly for mounting the poppet valve on the sprinkler body for movement exteriorly of the sprinkler body (1) from an open position disposed out of the path of the stream progressively through the stream and generally inwardly onto the outwardly facing annular valve seat into a closed position with respect to the outlet so as to contain water under pressure within the sprinkler body and prevent flow thereof outwardly of the outlet beyond the annular valve seat and (2) from the closed position generally outwardly from the outwardly facing valve seat and progressively out of the stream into the open position, and a

Abstract: The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field. Each sprinkler head is designed to produce a spray pattern that extends laterally outward with a predetermined directional orientation.

Abstract: A sprinkler is described comprising a nozzle formed with an axial bore having an outlet through which the liquid exits in the form of a jet, a spindle extending through the bore and having a smaller outer diameter than the diameter of the bore so as to be laterally movable within the bore, and a deflector mounted on the spindle and having a recess facing, and slightly larger than, the outlet end of the nozzle bore so as to be impinged by the jet issuing from the nozzle thereby to impart rapid lateral movements to the spindle. The deflector is eccentrically mounted on the spindle, and the recess is formed eccentrically of the deflector, such that the impacts of the spindle against the sides of the bore by its lateral movement within the bore impart a rotary movement to the deflector.

Abstract: A spray head apparatus having a liquid deflecting back plate which utilizes the Coanda effect to achieve a widely dispersed spray pattern is disclosed. The back plate is vertically movable and is positioned above and biased toward the upwardly facing open end of a vertical flow pipe so that the back plate rises as the pressure of a liquid inside the flow pipe increases.

Abstract: A Coanda unit has a Coanda surface and a gas supply line terminating in a slot adjacent to the Coanda surface. One side of the slot is contiguous with the Coanda surface and the other side is formed of a tongue of resilient material which flexes within defined limits in response to the pressure of the gas supply so as to vary the slot width.

Abstract: This device is essentially a butterfly type valve which acts as a flow constriction by rotating a disc body with its planar axis parallel to or at right angles to fluid flow through a channel. The disc body has an additional capability of extending sectors from the body beyond the original boundary or peripheral edge of the body, thereby increasing the restriction of the flow area surrounding the disc.