Abstract: An air-conductive rotary sprinkler includes an air-conductive rotary sprinkling device, a fluid supply assembly and a dust-collecting cover. The air-conductive rotary sprinkling device further includes a main housing tube, an inner rotary tube and a rotary spray head. The rotary spray head includes a spray-head casing connected with the inner rotary tube and a guide plug installed inside the spray-head casing and further including a helical actuating groove, a helical conductive groove, a central channel and a sideway channel. The dust-collecting cover is assembled to the air-conductive rotary sprinkling device. The pressured airflow from the helical air channel rotates the rotary spray head, and the pressured airflow from the helical conductive channel also alters the spray direction of the fluid originally flowing along the base axis, such that the fluid can be sprayed out of the rotary spray head in a rotary manner.

Abstract: An improved sprinkler structure provides a fastener of a positioning ring for elastically fastening a water guiding pipe. A fastening dot of the positioning ring can engage with a tooth of a water inlet connector effectively so that the water guiding pipe does not detach easily. Water outlet direction of a first water passage and a second water passage is tangent with an impeller; therefore, when water is let out, the water pressure will push the impeller evenly to make the sprinkler to rotate evenly and smoothly. A push rod of a water inlet switching device is pivotally connected with a connecting rod. When the connecting rod is pushed, because a clearance is present between the connecting rod and a connecting groove, the force received by the connecting rod is partially converted into momentum of displacement when the push rod wiggles.

Abstract: A sprinkler including a first portion, a second portion arranged to rotate in reciprocating motion in a plane about a generally vertical axis relative to the first portion, responsive to impingement of a water stream on the second portion, at least a first magnet associated with the first portion and at least a second magnet associated with the second portion, the first and second magnets being magnetized to repel each other when in at least predetermined propinquity during relative rotation thereof in the plane.

Abstract: A jet-breaker device for a jet irrigation apparatus having a supporting frame with a portion for anchoring it to the launch pipe of an irrigation apparatus, jet-breaker means connected to the frame and designed to at least partially project out of the nozzle of the apparatus for interfering with the outlet jet. The jet-breaker means include at least one jet-breaking element which is designed to oscillate with a predetermined frequency in a plane between a position substantially aligned with the nozzle for interfering with the jet and causing partial breaking thereof, and a position misaligned with the nozzle in which it does not interfere with the jet. The jet-breaker means are motorized for controllably adjusting the oscillation of the jet-breaking element and changing the oscillation frequency thereof. A jet irrigation apparatus incorporating the jet-breaker device.

Abstract: A sprinkler head for an embedded sprinkler includes a base having a adjust device arranged to an upper portion thereof and an inlet pipe formed to a lower portion thereof. The inlet pipe has a lateral outlet and a receiving chamber. A nozzle is received to the receiving chamber. A gap is formed between the nozzle and the receiving chamber so as the nozzle can be easily removed. A lower toothed ring indirectly rotated by the adjust device is arranged to a bottom of the inlet pipe. Angle between a flexible adjusting sheet extending from the lower toothed ring and a fixed adjusting sheet extending from a bottom of the base can be changed. A sleeve is arranged to the inlet pipe to receive an axial tube of a sprinkler so as to oscillate clockwise and counterclockwise with a driving shaft of the sprinkler.

Abstract: Rotary irrigation sprinklers capable of automatically matching precipitation rates with fluid flow rates and arc adjustments capability of maintaining a substantially constant throw radius along with various other features of the sprinkler.

Abstract: A percussive sprinkler with accurate outflow angle adjustment functions includes a main body, a percussive diversion frame and swaying portion. Said swaying portion is formed between the main body and assembly portion or between the sprinkler head and assembly portion. An outflow angle regulator is set correspondingly to the swaying portion. Said outflow angle regulator comprises of an angle division and locating frame, which is provided with an arched surface and tooth flange set along the arched surface. A driving rod is provided with a tooth flanged portion that can be meshed with the tooth flange of the angle division and locating frame. A locating portion is used to limit the driving rod and make it in a rotatable state. The rotary shift of the sprinkler head can be located segmentally, enabling users to adjust accurately the outflow angle of the sprinkler head.

Abstract: An irrigation sprinkler includes a riser and a nozzle mounted at the top of the riser that can rotate and emit a stream of water. The sprinkler further includes a diffuser mechanism that can intermittently interrupt the stream of water as the nozzle rotates. A gear train reduction is mounted in the riser and a turbine is coupled to an input shaft of the gear train reduction and is rotatable by water flowing through the riser. A drive assembly couples the nozzle and the gear train reduction and is configured to allow a user to select between a full-circle mode of operation and an oscillating mode of operation.

Abstract: A sprinkler nozzle includes a nozzle plate having at least one orifice formed therein. A stream deflector is rotatably mounted adjacent the nozzle plate and has a plurality of flutes formed therein that face the nozzle plate. Each flute has an inner portion that can momentarily align with water flowing through the orifice in the nozzle plate during rotation of the stream deflector relative to the nozzle plate. Water flowing through the orifice will be channeled in a generally radial direction by the flute to form a stream of water that is ejected from the stream deflector. The flutes have a plurality of different tangential trajectories relative to the orifice in the nozzle plate so that in combination the streams of water successively ejected from the stream deflector establish a predetermined shape of coverage.

Abstract: Many areas watered by prior art oscillating sprinklers are substantially rectangular. However, prior art oscillating sprinklers typically produce generally or substantially elliptical water distribution patterns. This geometric incompatibility causes problems and inefficiencies. Embodiments of the current invention include an oscillating sprinkler that automatically produces a substantially rectangular water distribution pattern. The substantially rectangular water distribution pattern may be produced by automatically controlling the distance from the sprinkler that streams of water travel before impacting the ground. This is accomplished by automatically and sequentially opening and closing and/or restricting flow to select nozzles at select points and within select portions of the oscillation cycle. A current invention oscillating sprinkler may reduce waste water, may reduce run-off waste water, and may automatically provide water to the corner areas of typical substantially rectangular areas to be watered.

Abstract: The present invention provides an impingement sprinkler with adjustable outflow angle. The invention includes a main body, at a lower side of which there is an inflow tube coupling end, and at upper side of which there is an upper frame. An outlet coupling portion is arranged at the lower flange close to the upper frame. A rotating member is arranged onto the upper frame of the main body; and an adjustable outflow head is assembled onto the outlet coupling portion of the main body, allowing the outflow angle to be freely adjusted. It is possible to adjust freely the sprinkling angle with the adjustable outflow head.

Abstract: A device is disclosed that uses a flow-control methodology to control sprays at very high precision and frequency. The device is based on an enhanced Coanda effect. The control flow is selectively applied to the region in which we desire the jet to vector and control the profile (width) of the jet. In one embodiment, the control flow is applied at the desired circumferential location by the action of a rotting disk with a flow passage of a size that spreads the jet the desired amount. The size of this flow passage may be controlled by using two overlapping disks with large holes in each. By rotating one disk relative to the other, the size of the resultant passage can be modified.

Abstract: A rotary sprinkler comprising a sprinkler body supporting a nozzle body and a water distribution plate supported on a shaft downstream of said nozzle body, said water distribution plate provided with a plurality of grooves shaped to redirect a stream emitted from said nozzle body and to cause the water distribution plate to rotate when struck by the stream; a stream deflector supported within said sprinkler body and surrounding said nozzle body; wherein said nozzle body and said stream deflector cooperate to produce a substantially rectangular wetted pattern area.

Abstract: The present invention provides an improved water flow switching mechanism of a gear-type sprinkler, which addresses problems of typical gear-type sprinklers, such as invalid water switching and poor stability. The gear-type sprinkler includes a water inlet portion, a water outlet portion and accommodating space. A convex framework is additionally placed onto the accommodating space opposite the separate water outlets. Two lateral grooves are defined in the convex framework, each corresponding to a water outlet. So the pivotal portion of the rotary switching seat is assembled centrally into the convex framework. The rotary switching seat is provided with two opposite extension flanges. The extension flange may block the lateral groove of the convex framework in line with the swinging direction of the rotary switching seat. The water-stop area of rotary switching seat is greatly increased, thus ensuring the stability of the water flow switching state and improving performance of the sprinkler.

Abstract: A sprinkler apparatus 10 for providing more even coverage of a sprinkled area with water which is achieved by a different speed of rotation of a water deflector 13 relative to a water diffuser 12 in a wobbling sprinkler head. A diffuser head 11 is rotatably attached to a base 16 and has a water diffuser 12 for diffusing water passing therethrough. A water deflector 13 is rotatably attached to the rotatable diffuser head 11 for directing water emitting from the nozzle 21 through the water diffuser 12. A viscous fluid brake 15 couples the water deflector 13 to the water diffuser 12 to vary the speed of rotation of the water diffuser 12 relative to the water deflector 13 to obtain a more even coverage of the area being sprinkled.

Abstract: The present invention is a double curved surface deflector system for rotary sprinklers providing for a 360-degree rotation using both clockwise and counterclockwise movements. A spray coupler directs water in forward and rear directions. The forward direction is deflected by an inward facing deflector that directs the water across a curved surface projects the water in the reverse direction with an adjustable water elevator for extended lift. After the sprinkler head rotates until the selector hits an adjustable stop, the inward facing deflector then pivots the sprinkler head in the opposite direction for the remainder of the coverage.

Abstract: A sprinkler head having a deformable member forming a collar is disclosed. The deformable member allows the sprinkler head to resist entry of foreign grit or matter within the sprinkler head, and allows the sprinkler head to eject or force out foreign matter from within the sprinkler head. The sprinkler head may be a spinning sprinkler head including a vane deflector, and the spinning sprinkler head may include a portion that shifts in response to being struck by water such that a braking mechanism is engaged in response to the force of the water. When water flow ceases, the spinning head may shift towards the deformable member so that a portion of the spinning head is received within the deformable member to restrict foreign matter from entering the sprinkler head.

Abstract: A swinging lawn sprinkler including a sprinkling control unit with a gear-operated transmission mechanism attached to one side of a sprinkler mount. A limiting connector having a water outlet connector engaged at one side is correspondingly matched to the gear-operated transmission mechanism and a spraying member. A main driving wheel, an adjusting seat, and a water inlet connector are sequentially coupled at the other end of the gear-operated transmission mechanism. The adjusting seat is equipped with a limiting cavity for a power switching device made up of a plurality of power units in linkage with a pivoting shaft and a pair of limiting zones with elastic pieces and pressure guide members adapted to be pivotally mounted to activate the shift of angles of a flow switch plate.

Abstract: A wobbling irrigation sprinkler head for attachment to a water conduit has a wobbling sprinkler head facing upward from the water supply conduit. The sprinkler head has a base having an attachment portion for attaching to a water source and a nozzle mounted to the base for directing water therethrough. A wobbling water deflector head is movably attached to the base and has a water deflector pad thereon having a deflector surface of predetermined shape to deflect water being emitted from the nozzle to rotate the wobbling water deflector head. A counterbalancing skirt extends from the water deflecting head around a portion of the base and spaced from the base for rotation with a wobbling water deflector head so that counterbalancing the skirt counterbalances the water deflector head to dampen vibration forces in the deflector head.

Abstract: A sprinkler head includes a base; an elongated stem having an inlet supported within the base; a nozzle and a stream deflector supported within the stem, the nozzle and stream deflector cooperating to define an arcuate orifice; a water distribution plate supported on one end of a shaft extending upwardly from the base, the water distribution plate located in axially spaced relationship to the nozzle and adapted to be impinged by a stream emitted from the nozzle. An externally threaded sleeve is fixed to an opposite end of the shaft; and an elastomeric throttle control member constructed with a smooth through-bore is engaged over the externally threaded sleeve to self-tap along the previously smooth bore. The throttle member is prevented from rotating such that rotation of the shaft causes the throttle control member to move axially relative to a flow restriction portion in the inlet, to thereby adjust flow rate through the stem and the nozzle.

Abstract: A rotary sprinkler having a rotatable nozzle assembly for watering an arc of ground traversed or swept by the nozzle assembly as the nozzle assembly rotates is disclosed. Oscillating rotation is achieved via a drive train that includes a trip spring that is drivable between first and second positions for reversing the direction of nozzle rotation. The sprinkler also includes: a variable trajectory nozzle; secondary opening adjacent the variable trajectory nozzle; an automatic break up screw configuration; a substantially constant speed turbine assembly; a bypass stator; a reversing cluster gear planetary drive with a uni-directional turbine; an overcenter reversing mechanism; a nozzle base clutch; an adjustable arc mechanism, solid arc limit stops, a snap ring installation method and an adjustable pilot valve which uses visual indicia.

Abstract: A rotary sprinkler (10) including a water inlet, a water outlet arranged for rotation about a rotation axis (14), a water director associated with the water outlet and a watering pattern determiner associated with at least one of the water outlets and the water director. The sprinkler (10) operates to cause the sprinkler (10) to have a substantially non-repeated watering pattern extending over more than 360 degrees about the rotation axis. The watering pattern is asymmetric with respect to the rotation axis (14) and is rotated for each successive rotation of the water outlet about the rotation axis (14) with respect to the watering pattern of the preceding rotation by a predetermined amount, whereby the successive rotations increase the angular uniformity of watering about the rotation axis.

Abstract: A self-adjusting nozzle for use in injecting pressurized, and optionally pulsating, fluid into a well bore or other conduit for the purpose of cleaning out the bore or conduit, the nozzle having slidably engaged mandrel and tool tip sections, each with an axial bore, and the tool tip having a plurality of axially and circumferentially spaced discharge ports communicating with the axial bores, the mandrel being able to reciprocate inside the tool tip without operator intervention in response to obstructions encountered ahead of, around or behind the nozzle as it enters or leaves the well bore or conduit, thereby sequentially blocking or unblocking some of the discharge ports to direct more of the pressurized fluid against the obstruction.

Abstract: The present invention relates to a water director for distributing a surge or flow of water to one or more of a plurality of output ports, which can vary in shape, size, and number, typically for use in marine and fresh water aquariums. Water pumped through a conduit into the hermetically sealed Switching Current Water Director (SCWD), powers an internally mounted gear driven fluid motor, which turns a rotational valve, alternately opening and closing a plurality of water outlet ports. When mounted externally to an aquarium, proper placement of output nozzles, which are connected to a water conduit attached to the various SCWD outlet ports, provides the desired opposing, or switching back and fourth currents. Depending on the inlet and outlet port configuration, the SCWD can be adapted to suit many applications.

Abstract: A spraying apparatus is disclosed for spraying coating material onto an internal wall of a cylindrical structure having an opening. The apparatus includes a spraying assembly which has a first and a second end. A support is secured to the spraying assembly, the support being selectively movable relative to the opening of the structure for permitting movement of the second end of the spraying assembly axially relative to the structure. A first conduit has a first and a second extremity, the first extremity of the first conduit being connected to a source of a first component of the coating material. The second extremity of the first conduit is connected to the second end of the spraying assembly. A second conduit has a first and a second termination, the first termination of the second conduit being connected to a further source of a second component of the coating material. The second termination of the second conduit is connected to the second end of the spraying assembly.

Abstract: A sprinkler head includes a base adapted to be secured to a component supplying water under pressure; an arc adjustment ring rotatably mounted on the base; a nozzle and a stream deflector supported by an elongated stem carried by the base, the nozzle and the stream deflector cooperating to define an adjustable nozzle orifice; a water distribution plate secured to a shaft in the stem and located downstream of the nozzle; the stem and the nozzle axially movable relative to the base; and a drive train operatively connected between the arc adjustment ring and the nozzle to rotate the nozzle relative to the stream deflector to thereby adjust the nozzle orifice between a pair of limit positions. The stem is rotatable within the base upon over-rotation of the arc adjustment ring beyond either of the pair of limit positions.

Abstract: An actuator assembly for a rotatable sprinkler head includes a base supported for rotation on a stationary platform assembly, a hub mounted for rotation on a shaft supported in the base; a lever arm pivotally mounted at one end to the hub and extending downwardly toward a stop plate assembly on the platform assembly, the lever arm having a free end extending toward the stop plate assembly. The stop plate assembly is configured to define two or more distinct arcuate paths of travel for the lever arm, and the lever arm is adjustable to locate the free end in any of the three arcuate paths of travel.

Abstract: A dirt-resistant bearing system for a sprinkler unit with a rotatable turret having a central shaft extending into a support channel formed within an inner housing. The central shaft may be formed with a relatively upper shaft portion and a relatively lower shaft portion, and the support channel may be formed with an upper channel region and a lower channel region. A first bearing and sealing assembly may be fitted substantially around an outer perimeter of the upper shaft portion and in communication with the upper channel region, and a second bearing and sealing assembly may be fitted substantially around an outer perimeter of the lower shaft portion and in communication with the lower channel region. Another aspect of the invention provides a sprinkler head with a fitted serrated seal assembly. The fitted seal assembly may include an outer case having an interior region, and a pop-up sprinkler head turret mounted on a riser sleeve slidably mounted within the interior region of the outer case.

Abstract: An adjustable sprinkler nozzle includes a cap with a first spiraling face, the bottom edge of which is provided with a stepped flange. A body that forms a nozzle orifice with the cap is composed of upper and lower bodies coupled together using high frequencies such that the upper body, during injection molding, is formed with a third spiraling face that extends from an inner tubular wall thereof to correspond to a second spiraling face on the outer periphery. The inner diameter of the third spiraling face can just be fitted into by the larger outer diameter of the stepped flange of the cap. Furthermore, a longitudinal drop face formed between the high and low planes of the third spiraling face is provided with a first stop piece projecting upwardly from a highest point thereof. The stop piece is inwardly provided with an inclined face. The inner wall surface of the third spiraling face is provided with a second stop piece relative to the position of the first stop piece.

Abstract: A nutating sprinkler assembly includes a sprinkler body having one end adapted to be coupled to a water supply conduit and an opposite end supporting a nozzle. At least one arm extends from the sprinkler body for supporting a removable cap assembly downstream of the nozzle. The cap assembly supports a gimbal bearing that, in turn, supports a rotor plate with off-center grooves for distributing a stream exiting the nozzle and impinging upon the grooves. A shaft has one end supporting the rotor plate for rotation about a center axis of the rotor plate, and an opposite end supported within the gimbal bearing.

Abstract: A Strip irrigator comprising a body member fitted with an inlet for coupling to an irrigation water supply and an outlet nozzle of said body member, defining a longitudinal axis, a distribution member formed with a water engaging portion consisting of two ducts forming between them an essentially V-like shape with an intersection adjacent a lower end thereof, each duct ending at a deflection groove, and a support bracket pivotally supporting the distribution member to the body member. The arrangement being such that responsive to a water jet emitted from the outlet nozzle, the distribution member generates reactionary forces imparting it as a reciprocal rocking motion about a horizontal axis perpendicular to the longitudinal axis.

Abstract: A dirt-resistant bearing system for a sprinkler unit with a rotatable turret having a central shaft extending into a support channel formed within an inner housing. The central shaft may be formed with a relatively upper shaft portion and a relatively lower shaft portion, and the support channel may be formed with an upper channel region and a lower channel region. A first bearing and sealing assembly may be fitted substantially around an outer perimeter of the upper shaft portion and in communication with the upper channel region, and a second bearing and sealing assembly may be fitted substantially around an outer perimeter of the lower shaft portion and in communication with the lower channel region. Another aspect of the invention provides a sprinkler head with a fitted serrated seal assembly. The fitted seal assembly may include an outer case having an interior region, and a pop-up sprinkler head turret mounted on a riser sleeve slidably mounted within the interior region of the outer case.

Abstract: A closed-case impact sprinkler unit having an outer case and an internally positioned riser sleeve that is upwardly extendable into a pop-up position. The riser sleeve may be formed with an external surface that is complimentary to the internal surface of the outer case to prevent the introduction of debris into the interior region of the outer case when the riser sleeve is in a pop-up position. The sprinkler unit may further include a closed-case turret assembly rotatably mounted on the riser sleeve that includes a fluid outlet and a compact impact sprinkler arm.

Abstract: A Strip irrigator comprising a body member fitted with an inlet for coupling to an irrigation water supply and an outlet nozzle of said body member, defining a longitudinal axis, a distribution member formed with a water engaging portion consisting of two ducts forming between them an essentially V-like shape with an intersection adjacent a lower end thereof, each duct ending at a deflection groove, and a support bracket pivotally supporting the distribution member to the body member. The arrangement being such that responsive to a water jet emitted from the outlet nozzle, the distribution member generates reactionary forces imparting it as a reciprocal rocking motion about a horizontal axis perpendicular to the longitudinal axis.

Abstract: A sprinkler device for distributing water comprising a body, a nozzle, a nozzle housing rotatably and slidably mounted in the body, a fluid flow interrupter for intermittently redirecting the stream of fluid exiting from the nozzle, an interrupter drive, a flow control assembly including a free floating valve for controlling water flow to the sprinkler head, reversing mechanism for reversing the direction of movement of the nozzle housing, and a nozzle positioning system for controlling sprinkler rotation speed.

Abstract: A spray assembly for a dishwasher includes a fluid pump and a spray tower. The spray tower includes a lower stationary member and an upper rotatable member and includes a fluid cavity therein. The rotatable member has at least one spray opening adjacent its upper end. A spray nozzle directs a stream of washing fluid upwardly into the spray tower and moves the stream of washing fluid in a circular pattern. The stream of water engages the upper rotatable member of the spray tower and the upper rotatable member rotates in response thereto. One form of the invention uses a deflecting surface on the rotatable member for causing rotational movement of the rotatable member and for causing precession of the rotatable member. Another modification of the present invention utilizes a pair of intermeshing gears for causing precession of the rotatable member.

Abstract: A double-nozzle deluge gun has a pair of nozzles arranged side by side rotatably on a rotatable table and an inter-nozzle control unit for adjusting the inter-nozzle angle measured between two lines obtained by projecting the radiation center lines of the nozzles onto a horizontal plane. Each nozzle has a deflector which is positioned in front of the nozzle during the very short range mode. Each deflector has a side cover which prevents water having passed through the deflector from excessively spreading sideways. The inter-nozzle angle and the water pressure are adjusted in accordance with desired water-reaching ranges, so as to achieve an optimal watering pattern in any range. Thus, the double-nozzle deluge gun can be controlled in accordance with desired water-reaching ranges, so as to achieve an optimal watering pattern having an appropriate width in any range.

Abstract: A wobbling irrigation sprinkler head is provided for use on a self-propelled mechanically moving irrigation system, such as a center pivot field irrigation system having the wobbling sprinkler head facing downward from the water supply conduit. The sprinkler head has a base for attaching to a pipe or to the central water supply conduit which base has nozzle mounted therein for directing water against a wobbling water deflecting head which is movably attached to the base and supports a deflector pad. The deflector pad has a deflection surface of predetermined shape with water deflecting grooves formed therein for rotating and wobbling the water deflecting head. The deflecting head has a loose fitting sleeve portion surrounding a support arm on the base and the base has a removable nozzle insert holder having a flange to loosely hold the deflecting head thereto.

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: An improved water-sprinkler having a vertically-pivotal control flap that is adjustably positionable with respect to the outlet of the nozzle, which controls the distances the emerging water-stream will reach. The control flap has an inner bracket-end that is pivotally mounted to a pivot block at the lower end of the bracket end, the upper part of the bracket-end being pivotally connected to a distal end of a control arm that is horizontally-adjustable via a series of circularly-arranged, independently and horizontally-movable sliding reeds or blocks, the distance of these sliding blocks from their radial center determining the horizontal position of the other end of the control arm, and, therefore, the end of the control arm connected to the upper end of the flap, whereby the spacing of the flap from the nozzle-outlet may be cyclically changed according to a desired pattern determined by the relative radial positions of the plurality of sliding blocks.

Abstract: A sprinkler having a nozzle for directing a desired flow of water therefrom, the sprinkler having a water turbine drive device for rotating the nozzle in response to water passing through the sprinkler; the sprinkler has a seal between its cover and housing and with a pop-up riser, the nozzle being mounted in a rotatable nozzle housing connected to the water turbine drive device; a deflector is mounted in the nozzle housing for moving into and out of the water flow from the nozzle, the deflector being connected to a pivotally mounted arm with a cam follower actuated by a cam on the top of the riser; a modified sprinkler has two flow passages therethrough to a primary nozzle and secondary nozzle, the flow to the primary nozzle being directed through the water turbine drive device while the flow to the secondary nozzle is through a valving device to produce a predetermined contour.

Abstract: A sprinkler unit having a continuously rotating nozzle includes a stream interruptor comprising a pin mounted on a carriage pivotally mounted on the nozzle and a cam surrounding the nozzle that has a series of cam surfaces for intermittently caming the carriage assembly and the interrupting pin into the stream to periodically interrupt the stream as the nozzle rotates about its axis to cause a more even distribution of water over the surface area surrounding the sprinkler unit.

Abstract: A reversible sprinkler unit includes a stream interruptor that includes a finger that moves into the stream for interrupting it on one direction of rotation of the nozzle and moves out of the stream on the other direction of rotation of the nozzle.

Abstract: A sprinkler head capable of generally uniform operation under varying local source pressure conditions in a part circle mode wherein reversing directions of movement at the ends of the part circle pattern is accomplished without establishing excessive reversing loads so as to render the sprinkler head acceptable for use as an end gun in a pivot move irrigation system, as well as for use in other systems such as solid set systems and traveling sprinkler systems.

Abstract: A large capacity agricultural irrigation sprinkler head of the rotary step by step impulse type operating in a part-circle mode with a step by step reversing movement. The sprinkler head embodies an improved sprinkler body including an elongated barrel leading to the outlet having a longitudinal axis intersecting (1) at an included angle greater than 90.degree. with the rotational axis of the sprinkler body and (2) at an angle of 90.degree. with the pivotal axis of the impulse arm assembly at a position spaced outwardly in a downstream direction from the intersection thereof with the sprinkler body rotational axis. The impulse arm is mounted by a yoke pivotally mounted on the barrel about an axis constituting the pivotal axis of the impuse arm for movement between first and second operating positions corresponding to the first and second operating positions of the impulse arm and pivotally connecting with the impulse arm about an axis constituting the oscillating axis of the impulse arm.

Abstract: A sprinkler assembly having a discharge nozzle for discharging water at a substantially constant volume and velocity driven rotatably about a vertical axis by a water turbine and gear drive for rotating said nozzle at varying rotational speeds in each cycle of rotation for varying the quantity of water discharged along the radial land areas extending from the axis of rotation as the length of the radial land area varies when irrigating a non-circular land area. A movable diffuser is mounted on the nozzle and is drivingly connected with the gear drive by a cam arrangement to vary the radial length and pattern of discharge of water corresponding to the rotational speed of the nozzle with the greatest radial length of discharge of water occurring when the nozzle is travelling at its slowest rotational speed.

Abstract: A rotary, impulse water sprinkler having a rotatable water dispensing head includes a water nozzle for directing a stream of water with a movable splash plate extending over the outlet of the nozzle to selectively deflect the water stream issuing from the nozzle to control the distance that the water stream will project from the water nozzle outlet. The impulse water sprinkler has a pivotally mounted impulse device with a vane at one end thereof adapted to be selectively disposed in the water stream from the nozzle outlet thereby causing the dispensing head to rotate. A rotation speed control device is operatively associated with the impulse device to control the amount by which the impulse vane is disposed within the water stream.

Abstract: A rotating stream sprinkler including a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaft has a stator fixed thereto within the chamber, the fluid chamber at partially filled with a viscous fluid; and wherein the chamber is at least partially closed at an upper end thereof by a rotor cap plate; and further wherein an underside of the rotor cap plate is provided with a first plurality of teeth and an upper surface of the stator is provided with a second plurality of mating teeth adapted to engage the first plurality of teeth to enable rotation of the rotor plate with the shaft in the adjustment mode.

Abstract: A rotating stream sprinkler including a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaft has a stator fixed thereto within the chamber, the fluid chamber at least partially filled with a viscous fluid; and wherein the chamber is at least partially closed at an upper end thereof by a rotor cap plate; and further wherein an underside of the rotor cap plate is provided with a first plurality of teeth and an upper surface of the stator is provided with a second plurality of mating teeth adapted to engage the first plurality of teeth to enable rotation of the rotor plate with the shaft in the adjustment mode.

Abstract: A rotating stream sprinkler including a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaft has a stator fixed thereto within the chamber, the fluid chamber at least partially filled with a viscous fluid; and wherein the chamber is at least partially closed at an upper end thereof by a rotor cap plate; and further wherein an underside of the rotor cap plate is provided with a first plurality of teeth and an upper surface of the stator is provided with a second plurality of mating teeth adapted to engage the first plurality of teeth to enable rotation of the rotor plate with the shaft in the adjustment mode.