Abstract: A sprinkler device for delivering an irrigation liquid for gravity-based pivot or linear irrigation systems includes a support structure having a first portion with a nozzle defining a longitudinal axis for generating a jet of liquid, and a second portion with a baffle plate pivoted thereto and facing the nozzle. The second portion includes a drive system, which has a first magnet moving with a reciprocating oscillatory motion due to a negative pressure generated by the liquid that flows through the nozzle, and is configured to move the baffle plate along, and force it to pivot with a reciprocating oscillatory motion about the longitudinal axis through a predetermined angle, to thereby deliver the liquid over a sector area of the soil. A method of delivering an irrigation liquid for gravity-based pivot or linear irrigation systems that uses such a sprinkler device.

Abstract: An irrigation sprinkler including a base defining an axis, a pressurized water inlet mounted onto the base, a nozzle, communicating with the inlet, and providing a pressurized water stream which is generally outwardly directed relative to the axis and a water stream deflector for engaging the pressurized water stream and deflecting at least part of the water stream azimuthally with respect to the axis, the deflector including a first pressurized water stream engagement surface and a second pressurized water stream engagement surface downstream of the first engagement surface, the first engagement surface having a pressurized water stream directing configuration arranged to direct a first portion of the stream impinging thereon, which does not exceed a predetermined quantity, onto the second surface and to direct at least a second portion of the stream impinging thereon, which at least a second portion exceeds the predetermined quantity, not onto the second engagement surface.

Abstract: An impingement sprinkler includes a main frame and a tubular structure rotatably mounted onto a lower portion of the main frame. A sprinkling device is laterally mounted onto the main frame and an impinging device is pivotally mounted on the sprinkling device. The impinging device continually impinges the sprinkling device for intermittently rotating the main frame relative to the tubular structure when the sprinkling device continually sprinkles. A reversing device is mounted onto the sprinkling device for controlling the irrigating area of the impingement sprinkler. A trigger is connected to the reversing device and two limit rods horizontally pivotally mounted on the tubular structure, wherein a poke rod is pivotally connected to the trigger and absolutely limited between two limit rods so as to enable steering of the impingement sprinkler.

Abstract: A device for ejecting an at least diphasic mixture includes an injection inlet for a liquid and a gas, a distribution chamber for producing a first liquid-gas mixture, an ejection nozzle of the first liquid-gas mixture in a main direction defined by an axis-vector. The ejection nozzle has a geometry comprising, on its length at least, a minimal section or neck at a location of the axis-vector. Among others things, due to the nozzle geometry, the expansion obtained inside the ejection nozzle allows the first liquid-gas mixture from the distribution chamber to be converted into a second mixture, according to the flow configuration, consisting for instance of a diphasic mist jet having an ejection range and liquid particle size that can be controlled according to the liquid and gas mass flow and to the absolute pressure at the injection inlet.

Abstract: An impingement sprinkler has a main body, a rotation guiding mechanism, a slant adjustment mechanism, a turning control component and a rotation limiting mechanism. The rotation limiting mechanism has a first limiting piece and a second limiting piece. The main body has a frame portion and a sprinkler head. The rotation guiding mechanism includes a torsional spring and a swinging piece. The swinging piece has a first contacting portion. The turning control component has a second contacting piece and a poking rod portion. The poking rod portion always contacts the stopping portions such that the first and second limiting pieces interfere with the poking rod portion.

Abstract: An aerator assembly for an animal watering device having a rotor mount removably inserted in a discharge opening of a cover of the device and a rotor carried by the mount that is rotated by discharged water. The mount includes a conduit having one end inserted in the cover and an outlet at its opposite end conveying a discharged stream of water against rotor baffles causing rotation. The mount includes an arm that offsets an axis of rotation of the rotor relative to the stream so water impinges against a baffle. A pin can be included that engages the arm that is received through a rotor hub rotatively attaching the rotor to the arm. Such an aerator not only aerates water discharged during fountain operation, it also reduces noise by reducing splashing. The present invention is also directed to a pet fountain equipped with such an aerator assembly.

Abstract: A sprinkler head includes a nozzle fixed within the sprinkler body, and a wobbler cage including a water deflector plate downstream of the nozzle mounted for rotating and wobbling motion relative to the sprinkler body. In certain embodiments, a viscous brake is fixed within the sprinkler body and includes a shaft rotatable about the longitudinal axis passing through the nozzle. The shaft is eccentrically coupled to the water deflector plate for slowing the rotating and wobbling motion of the wobbler cage and the water deflector plate.

Abstract: A sprinkler head with a nutating water distribution cage attached to a sprinkler body. Water from the sprinkler head impacts a strike plate of the cage to initiate nutation of the cage. Spiral grooves on the strike plate contribute to the nutation of the cage, and an upturned edge on the periphery of the strike plate contributes to the spread and uniform distribution of water from the sprinkler head.

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 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: A variable arc sprinkler head or nozzle may be set to numerous positions to adjust the arcuate span of the sprinkler. The nozzle may include an arc adjustment valve having two portions that helically engage each other to define an opening that may be adjusted at the top of the sprinkler to a desired arcuate length. The arcuate length may be adjusted by pressing down and rotating a deflector to directly actuate the valve. The nozzle may also include a radius reduction valve that may be adjusted by actuation of an outer wall of the nozzle. Rotation of the outer wall causes a flow control member to move axially to or away from an inlet.

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: A percussive sprinkler with flow regulation functions has a main body with an inlet tube coupling end, top frame, sprinkler head and flow channel. A percussive diversion frame is arranged onto the top frame. The diversion frame is provided with a hydraulic pusher and a torsional spring. The pusher is located correspondingly with a spacing to the front end of the sprinkler head. A regulating valve assembly portion is formed onto the preset location of the flow channel, and has a through-hole and inner wall. The through-hole is connected with the flow channel. A flow regulating valve is set on the regulating valve assembly portion, and has a switching member and a regulating portion. The switching member can be driven to control water flow via the rotation of the regulating portion. The users can change the water outflow for a variety of operating environments with improved applicability.

Abstract: The present invention provides a bumping-type sprinkler. The sprinkler includes a main body, where an inlet pipe coupling end is mounted at the lower end, an upper frame is mounted at the upper end, and a water outlet is arranged at lower flange nearby the upper frame. A revolving member, arranged onto the upper frame of the main body, has a torsional spring and a revolving portion. An outflow turntable is assembled corresponding to the water outlet of the main body. A pivot portion is placed centrally on the outflow turntable for screwing it laterally on the water outlet at interval. A plurality of outflow guide holes are arranged at intervals along a circular path of the eccentric circumferential portion of the outflow turntable. The outflow guide holes can be located corresponding to the water outlet in line with the change of rotation/displacement angle of the outflow turntable.

Abstract: A recreational vehicle toilet tank cleaning assembly includes a tube that has a terminal end. A nozzle is removably coupled to the terminal end. The nozzle has a first end, a second end and a perimeter wall extending between the first and second ends. The first end is open and is threadably coupled to the terminal end of the tube. The nozzle has a plurality of apertures therein. The apertures include a primary aperture extending through the second end that is aligned with a longitudinal axis of the nozzle. The perimeter wall has a break therein and the nozzle includes a first portion rotatably coupled to a second portion. The second portion includes the plurality of apertures. The tube is fluidly couplable to a water source and the nozzle placed in a recreational vehicle toilet tank to eject water outwardly of the plurality of apertures and clean the tank.

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: An assembly for converting a fluid flow includes a housing having an inlet end for receiving the fluid flow and an outlet end for issuing a converted and output fluid flow. One or more rotatable components are supported within the housing, in a path contacting the inlet fluid flow. A selected component exhibits a plurality of arcuate and flow conducting surfaces, such as which are arranged about a circumference of the rotating component. A fluid dampening element is operatively connected to the rotating component and restricts a rotational speed associated with the rotatable component, in response to rotational forces imparted by the inlet fluid flow, and in order to modify at least one of a flow and pulse rate of the fluid.

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 provides a turbine with dual sets of fins and a stator assembly for directing water onto both sets of fins. The water flow directed to the first set of fins generates slightly more force than the water flow directed to the second set of fins. In this manner, the opposing forces generated by the water flow maintain a more uniform and constant speed of the turbine.

Abstract: The present invention provides an improved structure of a sprinkler. The invention has a water storage space inside the sprinkler base, so that the water flows into the sprinkler base through water pipe connector. The water fills up the water storage space first and then flows into the sprinkler unit. The sprinkler base is weighed down with water without having other blocks to secure it. The invention not only saves cost but also secures the base as well, which makes it more practical.

Abstract: A speed limiting mechanisms for turbine-driven fluid distribution apparatus usable with compressible fluid such as compressed air and incompressible fluid such as water. Dynamic viscous damping of the turbine output power train is used to control the rotational speed of the turbine. This prevents overspeeding when the turbine is air driven, and also when the turbine is water driven, under abnormal conditions such as blockage of a bypass area designed to control the turbine speed by limiting flow to the turbine. The same mechanism can be used to impose a lower rotational speed in the turbine during normal operation in conjunction with a turbine optimized for lower speed operation to reduce the required gear reduction in the power train.

Abstract: An impact sprinkler drive is provided by an impact arm or spoon that rotates out of and counter-rotates into a water stream to impact and forward re-align a water emission portion from which the water stream emits. The impact arm is designed to, upon sufficient rotation, interfere with the water stream to reduce back-impact and reverse re-alignment of the water stream. The impact arm may be an impact spoon formed on an impact disc. The impact spoon is configured to increase the energy for forward re-alignment of the water emission portion including an increased length to permit a time delay before water flowing through the spoon applies force away from the water stream. The water acts upon spoon portions positioned at increased radial distances so that the water acts with a greater torque arm to impart rotational energy.

Abstract: A sprinkler device includes a sprinkler body having a longitudinal center axis, an inlet at one end and an outlet at an opposite end. A rotatable nozzle is supported within the body and defines a first flow path lying on the longitudinal center axis and a second flow path terminating at a discharge orifice offset from the longitudinal center axis. A rotor plate is supported on the nozzle for orbital motion about the longitudinal center axis and for rotation about a second axis offset from the longitudinal center axis. The rotor plate has a plurality of grooves formed therein, and arranged to cause the rotor plate to rotate about the second axis when a stream emitted from the nozzle impinges on the plate, such that the nozzle assembly is caused to rotate about the first axis.

Abstract: The invention relates to an irrigation system particularly for plant cultures comprising an irrigation arm which can be pivoted in a horizontal angle region around an essentially vertical axis, a water jet exiting from the front thereof. According to the invention, an electronic control device (10) controls the horizontal angle region (?) which is covered by the irrigation arm (6), the control device (10) contains an electronic memory (23), wherein the values of two or more horizontal angle regions can be digitally stored, and a programmable run-off control element (22) wherein a sequence of stored horizontal angle regions can be established. The stored horizontal angle regions can be established by means of a GPS receiver.

Abstract: A rotary impact sprinkler is disclosed having a nozzle connected to a housing and a discharge deflector member connected to a rotatable shaft assembly without a dynamic seal between the nozzle and the deflector. The sprinkler may be provided with different nozzles and discharge deflectors that are easily removed and replaced for providing desired water flow and discharge characteristics. The shaft assembly and housing may have contacting braking surfaces outside of the water flow. The braking surfaces may provide a frictional braking force dependent on both water flow rate and water flow pressure. The sprinkler has a rotatable impact assembly supported by the shaft assembly and including a deflection member for rotating the impact assembly relative to the shaft assembly. The shaft assembly may have a pin for supporting the impact assembly at a position above the deflection member.

Abstract: A reversible, adjustable arc sprinkler head comprising a sprinkler body incorporating a fixed nozzle; a spray plate mounted on one end of a support cage for rotation with the support cage in one or the other of two opposite directions about a first axis arranged coaxially with a stream emitted from the nozzle, and for back and forth tilting motion about a second axis perpendicular to the first axis, an opposite end of the support cage secured to a sleeve rotatably mounted in the sprinkler body, the spray plate having a pair of substantially parallel grooves for selectively receiving the stream, wherein the direction of rotation of the spray plate about the first axis is determined by the tilting motion of the spray plate about the second axis; and a shift lever formed with an aperture sized to receive the stream, the shift lever mounted at one end on the sleeve for rotation about a third axis parallel to the first axis, the shift lever enabled to shift the stream from one of the pair of grooves to the other o

Abstract: A reversible, adjustable arc sprinkler head includes a sprinkler body incorporating a fixed nozzle; a spray plate mounted for rotation in one or the other of two opposite directions about a first axis arranged coaxially with a stream emitted from the nozzle, and for back and forth tilting motion about a second axis perpendicular to the first axis, the spray plate having a pair of substantially parallel grooves for selectively receiving the stream, depending on a direction of tilt of the spray plate; and a shift lever formed with an aperture sized to receive the stream. The shift lever is mounted at one end for rotation about a third axis parallel to the first axis, and is enabled to shift the stream from one of the pair of grooves to the other of the pair of grooves to thereby reverse the direction of rotation of the spray plate.

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: 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: The subject invention is a Kick-Starter (KS) which can be readily adapted to a variety of sprinkler head designs to increase start up efficiency, as well as efficiency and uniformity of water distribution during operation of the sprinkler head. The Kick-Starter is incorporated into a sprinkler head comprising a sprinkler body with a water inlet disposed therein, a nozzle orifice in fluid connection with said water inlet, and a water deflecting pad movably attached to said sprinkler body. The Kick-Starter mechanism comprises a KS pass-through hole and a KS deflector in fluid connection with said pass-through hole.

Abstract: A sprinkler head includes a fixed nozzle; and a rotor plate spaced from the nozzle and mounted for rotation about an axis extending through the nozzle, and mounted for tilting movement about a horizontal axis. The rotor plate has adjacent water distribution grooves therein, selectively alignable with the nozzle, the grooves shaped and arranged to cause the rotor plate to rotate in opposite directions. A flow reaction member is secured to the rotor plate. A first flow channel having a first inlet port is arranged to intercept a stream emanating from one of the grooves aligned with the nozzle, and to thereby divert at least a portion of the stream through the flow channel and onto the reaction member to cause the rotor plate to tilt about the horizontal axis and align the other of the grooves with the nozzle, thereby reversing the rotation direction of the rotor plate.

Abstract: A controlling device for a rotating sprinkler is composed of a sleeve (10), a compressing block (21), a spring (22), a controller (23), a rotator (24), a cushion (25), and a shelter ring (26). The rotator (24) rotates with a rotating sprinkler (50) synchronously and operates with the controller (23) to construct a gap selectively therebetween so that a quantity of water flowing into the rotating sprinkler (50) is changed when the gap is formed or not. Whereby the controlling device arranges a substantially rectangular spraying arrangement of the rotating sprinkler (50).

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: System and method for rotating a roof with water to create a participatory water attraction. The system preferably includes a roof having a friction surface and a support member for supporting the roof. A first conduit may be used to direct water onto the friction surface to cause the roof to rotate in a clockwise direction, and a second conduit may be used to direct water onto the friction surface to cause the roof to rotate in a counterclockwise direction. A valve is preferably used to direct water into one of the first and second conduits while restricting water flow into the other conduit. The valve preferably is adjustable by a participant at ground level. The friction surface preferably includes a plurality of protrusions to facilitate rotation of the roof by providing a contact area for the water directed at the roof. A control system may be used to activate a light system and/or a sound system when the valve is adjusted.

Abstract: A fixed part and a mobile part. The mobile part includes a pipe head offering a curved path with an initial portion that commences axially and is deflected to form a final portion having a certain inclination. The inclined final portion is very short and forms a seat for an interchangeable nozzle selectable from a series of nozzles having tapering through orifices of different inclinations and all connectable to the deflection of the initial portion. Different inclination angles are thus possible.

Abstract: A rotary sprinkler comprising a body member fitted with a water inlet for coupling to a water irrigation supply and an outlet nozzle at an end of a stem member vertically projecting from the body, a swivel distribution member rotatably articulated to the stem member and formed with at least one deflection surface being in stream communication with the outlet nozzle. The deflection surface is adapted for generating a tangent reaction force imparting rotary motion to the distribution member.

Abstract: A rotary sprinkler including a water discharge assembly having a water discharge outlet for discharging water laterally of the sprinkler, and a connecting passageway fluidly coupling the inlet to the water discharge outlet. The water discharge assembly is rotated by a drive including a rotary turbine in the connecting passageway rotated by the water flow therethrough, and a ball carried by the rotary turbine and movable radially outwardly thereof by centrifugal force during the rotation of the rotary turbine. An abutment is located to be impacted by the ball when in its radial outward position during the rotation of the rotary turbine to thereby rotate the water discharge assembly in a series of stepped increments.

Abstract: A rotary sprinkler includes a drive assembly having a rotary drive rotated by the inletted pressurized water, a rotor, a mechanical coupling between the rotary drive and the rotor, and at least one ball carried by the rotor and movable radially outwardly thereof by centrifugal force during the rotation of the rotor; and a water discharge assembly rotatably carried by the sprinkler housing and including a water discharge outlet fluidly coupled to the sprinkler inlet, and an abutment located to be impacted by the ball when in its radial outward position during the rotation of the rotor to thereby rotate the water discharge assembly in a series of stepped increments.

Abstract: A sprinkler includes a sprinkler body having an inlet end and an outlet end, the outlet end having a nozzle with a discharge orifice; the nozzle surrounded by an outer wall forming an annular chamber radially spaced from the discharge orifice. A rotor plate is supported by the sprinkler body for rotation about an axis, the rotor plate having a tubular water distribution passage with an inlet and an outlet, the passage configured to cause the rotor plate to rotate when a stream from the nozzle passes therethrough. The inlet of the passage is axially spaced from the discharge orifice by a distance sufficient to aspirate air into the inlet end of the passage, thereby pulling water leaked into the chamber back into the passage.

Abstract: A wobbling sprinkler head is provided, especially for use in irrigation systems such as self-propelled mechanically moving irrigation systems, in which the wobbling sprinkler head faces downward from the water supply conduit. The sprinkler head has a body having a water inlet as well as an attachment for connection to the water supply and a nozzle for directing a stream of water from the sprinkler body. The sprinkler head has one or more arms extending from the body around a water deflecting head. The water deflecting head is movably attached to the sprinkler head body and has a water deflecting surface positioned to deflect water from the nozzle and move the water defecting head. The bottom of the water deflecting surface has a protruding member extending therefrom, for interacting with a second protruding member extending from the arms of the sprinkler head body. The protruding members can have magnets of opposing polarity mounted therein.

Abstract: A jet actuator, particularly for actuating hydraulic apparatus such as rotating pulse sprinklers, comprises a nozzle for generating a free jet of water directed along a first longitudinal axis, the nozzle being located at the free end of a spout, the spout being coupled to a line of pressurized water by means of a rotatable joint having a second rotation axis that is transverse to the first longitudinal axis. A deflector is provided which can freely oscillate in a transverse direction between a first end position wherein the deflector lies completely outside the jet and a second end position wherein the deflector is immersed to the maximum extent in the jet so as to draw part of its energy. A support is provided for oscillably mounting the deflector on the spout to transfer the energy drawn from the jet to the spout to promote a stepwise movement thereof about the second rotation axis.

Abstract: A rotary sprinkler includes a sprinkler body having a center axis and including a nozzle and associated rotor plate for issuing a stream in a substantially radial direction, substantially perpendicular to the axis, and rotating the stream about the center axis; a stream interrupter mounted loosely for eccentric rotation about the center axis, the stream interrupter including an annular ring provided with a plurality of stream deflector fingers, the stream interrupter being driven directly by the stream impinging on the plurality of stream deflector fingers. The rotor plate is formed with a stream emitting groove configured to receive a vertical stream and redirect the stream in the radial direction while also causing the rotor plate to rotate about the center axis. In addition, the groove is profiled to cause the stream to issue from the rotor plate with a primary component and a secondary component diverging from the primary component.

Abstract: A self adjusting jet breaker device for impact sprinklers having a spout connected to a pressurized water supply line using a rotary coupling, a terminal nozzle for generating a water jet, and an oscillating arm having a baffle. The device is arranged on the oscillating arm and includes an active surface adapted to interact with the water jet between two successive oscillations of the arm. The active surface of the device has an angle of inclination with respect to a longitudinal axis of the arm such as to be substantially tangent to the water jet as the first surface moves downward from above. The angle of inclination increases during the entire downward transit and decreases during an upward transit, so as to always receive an upward thrust from the water jet. The device optimally distributes and breaks up the jet, and increases the beat frequency of oscillations of the arm in an automatic manner, i.e. adapting to both high and low jet supply pressures.

Abstract: A jet mixer having a hub arrangement for facilitating the rotation of an impeller mounted to the hub. The hub receives fluid from a hollow conduit to provide a liquid bearing. The hub includes a sleeve member that is axially self-centering and rotatable on a body portion of the hub.

Abstract: A sprinkler includes a main body, a head part, a bracket and a swinging arm. The head part has two outlets disposed therein and the bracket has an extending strip disposed thereon and is disposed above an upper end of the head part. The extending strip has a first distributing plate with a rough surface formed thereon and which is rotatabiy engaged thereto. The swinging arm is pivotally engaged between the head part and the bracket via a spring disposed between the bracket and the swinging arm, and extends transversely through the bracket. A second distributing plate, having a rough surface formed thereon, is engaged to an end of the swinging arm, such that water ejected from one of the outlets will impact on the first distributing plate after impacting the second distributing plate.

Abstract: A rotating impact sprinkler comprising a device for connecting the pressurized water column to a rotating joint which supports a rotating assembly which is formed by a tubular body with a nozzle for generating a jet, an oscillating arm and deflection element mounted at the end of the arm so as to interact with the jet. The deflection element comprises at least one main deflector which oscillates elastically in a direction which is transverse to the arm between a central equilibrium position, in which the surface effected by the jet is minimal, and at least one lateral abutment position, in which the surface effected by the jet is maximal. The change from the minimally effected surface to the maximal one is sudden, so as to instantly increase withdrawal of energy from the jet and generate impulsive forces on the deflector.

Abstract: A nozzle for providing an oscillating fluid stream has a stationary segment, and at least one oscillating segment pivoted to the stationary segment. In one embodiment, the fluid stream impinges on an inwardly turned lip on the oscillating segment to drive the oscillation. In other embodiments, the reaction of the fluid discharge assists in driving the oscillation of the nozzle, with or without assistance of the inwardly turned lip. For high pressure systems, including the use of liquids, the segments may be more massive to redirect the fluid stream. For compact systems, the plural segments may be completely housed within the stationary segment.

Abstract: An impact drive sprinkler including a body defining a nozzle arranged to provide a stream of pressurized liquid; spring loaded stream deflector and hammer apparatus for intermittently engaging the stream and providing in response to the engagement a force causing intermittent rotation of the body about a rotation axis; and apparatus for selectably limiting the amplitude of motion of the deflector and hammer apparatus and thus determining the direction of rotation of the body and the overall range of the resulting spray. The selectably limiting apparatus has first and second orientations corresponding to rotation of the sprinkler in respective forward and return directions and comprises a first hammer engagement surface that is engaged when the sprinkler is rotating in the forward direction. The first hammer engagement surface is arranged such that hammer engagement therewith retains the apparatus for selectably limiting in the first orientation.

Abstract: A novel speed adjustment device for control of the operation frequency of the splatter arm in a sprinkler adapted for watering a garden or a lawn. The speed adjustment device is provided with an adjustment knob which is disposed on top of a bias spring in connection to the splatter arm at one end and to the underside of the adjustment knob at the other end, and an urging spring is disposed on top of the adjustment knob so as to always urge the same downward. The underside of the adjustment knob is provided with a plurality of spaced stop protrusions which are in selective engagement with a pair of stop members disposed on the rotatable main body of the sprinkler so that the turning of the adjustment knob can vary the tension of the bias spring in connection to the splatter arm thereby the operation frequency thereof can be changed accordingly.

Abstract: A constant drive nozzle for use in combination with an impulse or impact drive sprinkler includes a tubular nozzle body with a drive orifice and a range orifice formed in its outlet end. The stream issuing from the nozzle is formed into a drive stream portion and a range stream portion by the drive and range orifices. Since only the drive stream portion intercepts the drive spoon of the arm which impacts and rotates the sprinkler body, various diameter range orifices can be used in conjunction with a single diameter drive orifice without affecting the rotational speed of the sprinkler body.