Rotary Motor Drive (e.g., Turbine Type) Patents (Class 239/240)
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Patent number: 7404525Abstract: 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.Type: GrantFiled: October 18, 2005Date of Patent: July 29, 2008Assignee: The Toro CompanyInventors: Miguel Santiago, Jeff McKenzie, Peter Janku, Steven C. Renquist, Hyok Lee, Steve K. Kish, James T. Wright, III, Chad McCormick
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Patent number: 7392956Abstract: A rotary sprinkler having an adjustable arc segment whose angular extent and absolute direction relative to the ground are represented by an arc indicator, which arc indicator may comprise a band whose visible length represents the angular extent and whose position on the sprinkler points to the direction. The sprinkler may have the arc segment adjusted by a movable arc limit stop that is coupled to a toggle member only at drive reversal, and the sprinkler may be converted to full circle operation by raising the arc limit stop relative to a cooperating trip tab. A buckling spring assembly used to shift the drive comprises a compression spring held between two spaced pivot members, and the drive can be built in continuous and intermittent drive versions by replacing a few normal rotary gears with multilated gears. A friction clutch having asymmetric teeth for smooth operation prevents damage to the drive during forced nozzle rotation.Type: GrantFiled: March 22, 2005Date of Patent: July 1, 2008Assignee: The Toro CompanyInventors: Jeff McKenzie, Chad Philip McCormick, Peter Janku
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Publication number: 20080142618Abstract: A sprinkler having a water-driven drive mechanism or motor for rotating a sprinkler head is disclosed where the drive mechanism converts a constant input rate into a variable rate to reduce tailing from overly-rapid rotation and to promote full develop of water stream discharge profile. The drive mechanism includes continuously engaged members including one or more planet gears each having an offset or eccentrically positioned engagement portion for driving a second gear member. As the planet gear rotates, the movement of the engagement portion has a radial component relative to the second gear, and the rotational velocity of the second gear is related to the radial position of the engagement portion.Type: ApplicationFiled: December 14, 2006Publication date: June 19, 2008Applicant: RAIN BIRD CORPORATIONInventors: Flynt Leroy Smith, Bandar Hussain Alumran, Mary Margaret Boice, Marianne Goble, Daniel S. Gabrys, Suzanne Lee Singer
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Publication number: 20080054092Abstract: An irrigation sprinkler is provided having a turret for the distribution of irrigation water that includes a self-flushing mechanism to prevent accumulation of debris in a sprinkler control member and/or the interior of the turret. The sprinkler includes a main flow path that delivers water to a nozzle for irrigation and a secondary flow path that delivers water to flush part of the member and/or interior of the turret. The secondary flow path delivers water when the sprinkler cycles on and when the sprinkler cycles off. For example, with a pop-up sprinkler, the secondary flow path would deliver fluid sometime during its movement to the elevated position and movement to the retracted position.Type: ApplicationFiled: September 6, 2006Publication date: March 6, 2008Applicant: Rain Bird CorporationInventors: Mona-Lisa Alexander, Bradley D. Helzer
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Patent number: 7337988Abstract: 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.Type: GrantFiled: October 5, 2004Date of Patent: March 4, 2008Assignee: The Toro CompanyInventors: Chad McCormick, Jeff McKenzie
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Patent number: 7303147Abstract: A sprinkler includes an outer case and a riser mounted for reciprocation within the case. The riser supports a nozzle, an impeller, and a drive linkage connecting the nozzle and the impeller. A diaphragm valve is mounted in outer case beneath the riser and includes a valve member vertically reciprocable within a valve support housing to engage and disengage a valve seat. The valve seat can reciprocate relative to the valve support housing to reduce mechanical loading.Type: GrantFiled: February 28, 2006Date of Patent: December 4, 2007Assignee: Hunter Industries, Inc.Inventors: Fred M. Danner, Jeff M. Smith
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Patent number: 7287711Abstract: A sprinkler includes a drive mechanism mounted in a riser that rotates a nozzle at the top of the riser. The drive mechanism enables a user to select between oscillation of the nozzle through an adjustable arc and uni-directional full circle rotation of the nozzle.Type: GrantFiled: May 27, 2005Date of Patent: October 30, 2007Assignee: Hunter Industries, Inc. a Delaware corporationInventor: John D. Crooks
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Patent number: 7287712Abstract: An oscillating sprinkler head transmission for alternately driving an output shaft and sprinkler head nozzle to oscillate it with spring bias being provided to prevent the transmission from being placed in an inoperative position, where the sprinkler head is not oscillated.Type: GrantFiled: October 8, 2003Date of Patent: October 30, 2007Inventor: Carl L Kah, Jr.
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Patent number: 7284714Abstract: A water shutoff and discharge control apparatus for sprinklers comprises a water intake apparatus mounted to a support seat and swung back-and-forth by a sprinkling control assembly. The water intake apparatus has a tube with a platform and multiple outlets thereon, and both end sections of the tube have multiple control channels each connecting to the interior of the tube for the extension of a control rod there-through. Each control rod has a flat surface with a water-sealing member and a water-sealing area disposed thereon to match to the outlet, permitting the water-sealing member to abut watertight against an internal plane surface of the platform and slide along with the movement of the control rod to correspond to the outlet for water shutoff/discharge control thereby. Besides, the contact area between the control rod and the platform can be reduced, facilitating easier and more efforts-saving operation of the control rod thereby.Type: GrantFiled: July 14, 2006Date of Patent: October 23, 2007Assignee: Yuan Mei Corp.Inventors: King Yuan Wang, Shun Nan Lo, Chi Han Cheng
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Patent number: 7273188Abstract: An embodiment of an internal self-rotating fluid nozzle includes a rotor rotatably moveable within a nozzle body cavity. The rotor may include a jewel holder that carries at least one jewel member and spins against a rotor seat disposed near the front of the cavity. The rotor seat may be floating. At least one fluid drive passageway may be disposed within, and oriented angularly relative to the central axis of, the cavity. A fluid flow director may be included, extend around the inner circumference of the cavity and include a protruding portion that directs fluid into a forward portion of the cavity.Type: GrantFiled: August 12, 2004Date of Patent: September 25, 2007Inventor: Darrell R Saha
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Patent number: 7261247Abstract: A slip-clutch assembly including a slip gear and clutch for a sprinkler motor of a sprinkler is disclosed for reducing damage to movable portions of the sprinkler is disclosed. The slip-clutch assembly allows at least a portion of a motor assembly or a sprinkler head to rotate at a rate lower than under normal operating conditions. The slip-clutch assembly includes a first component or portion with deformable portions received under normal operating conditions within recesses or cooperating structure of a second component or portion. The deformable portions are able to release or slip from the cooperating structure when the rotation of a portion of the sprinkler is impeded by a force exceeding a predetermined level. The deformable portions of the slip-clutch assembly may include deflectable arms with an engageable portion received within the cooperating structure. The engageable portion may dis-engage by camming out of the cooperating structure when the impeding force exceeds the predetermined level.Type: GrantFiled: November 15, 2004Date of Patent: August 28, 2007Assignee: Rain Bird CorporationInventors: Jonathan Yeh, Bradley D. Helzer
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Patent number: 7258286Abstract: A water shutoff and discharge control device for sprinklers comprises a water intake assembly mounted to a support seat and swung back-and-forth by a sprinkling control assembly wherein the water intake assembly has a tube with multiple bores drilled thereon for the mounting of a sealing strip equipped with multiple spray nozzles and water-sealing areas. Both end sections of the tube are disposed multiple control channels each connecting to the interior of the tube for the extension of a control shaft with a plug mounted thereto. Each plug having an inlet aperture and an abutment surface is corresponded to a water-sealing area of the sealing strip to reveal a movement space there-between, permitting the plug flushed by the water flow to climb upwards and, depending on the movement of the control shaft, to switch in position relative to the spray nozzle for easy control of water shutoff or discharge thereby.Type: GrantFiled: June 30, 2006Date of Patent: August 21, 2007Assignee: Yuan Mei Corp.Inventors: King Yuan Wang, Shun Nan Lo, Chi Han Cheng
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Patent number: 7255291Abstract: A multifunctional sprinkler structure comprises a water motor having an outlet seat and a top cover mounted to a top-end side, and two adjusting seats and a water supply seat assembled onto a bottom-end side. The bottom-end side of the water motor has a guide groove with a restrictive hole for the extension of a switch shaft there-through. The outlet seat has a water-discharge chamber with multiple barriers extending thereon corresponding to an impeller of the water motor, and an oblique-extending central guide port matching to a spray nozzle having multiple water-guiding ribs obliquely extending towards the same direction therein. Therefore, the barriers of the outlet seat and the water-guiding ribs of the spray nozzle are utilized to correspond to the direction of the water flow so that the water discharge can be easily switched to eject either in more direct and forceful column-like spray or in more expanding spray.Type: GrantFiled: October 6, 2006Date of Patent: August 14, 2007Assignee: Yuan Mei Corp.Inventor: Shun Nan Lo
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Patent number: 7226000Abstract: A sprinkler includes a housing disposed on a base, and a sprinkler tube coupled to a oscillating mechanism, for allowing the sprinkler tube to be rotated relative to the housing and the base by the oscillating mechanism, the oscillating mechanism includes a receptacle disposed within the housing, and a casing rotatably attached to the receptacle, and coupled to the sprinkler tube, for allowing the casing and the sprinkler tube to be rotated relative to the receptacle. A device may be used for swinging the casing and the sprinkler tube relative to the receptacle in reciprocating action, to allow the water to smoothly or swiftly flow out of the sprinkler tube in various kinds of water spraying patterns.Type: GrantFiled: August 30, 2005Date of Patent: June 5, 2007Assignee: Yuan Pin Industrial Co., Ltd.Inventor: Chen-Tung Huang
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Patent number: 7223075Abstract: A turbine wheel for driving rapidly rotating tools, in the form of a circular disk or ring, configured for mounting so as to be rotatable about an axis. Disposed thereon in circular formation are turbine blades having axially parallel front and back faces curved in the radial direction. The front face has a lesser radius of curvature (R3, R4), at least in portions, than the back face. This feature allows the turbine wheel to fit into the conventional turbine housings without relatively major redesign and with, at most, slight modifications. The turbine wheel can achieve higher torque than previous turbine wheels at the required high rotational speeds. Thus, a greater quantity of material can be applied to the spraying dome or a spraying disk without a detrimental braking. Surfaces to be sprayed can be provided with a uniform coat of material in shorter time.Type: GrantFiled: January 29, 2004Date of Patent: May 29, 2007Assignee: GAT Gesellschaft für Antriebstechnik mbHInventor: Bernhard Schmitt
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Patent number: 7175107Abstract: The high-pressure multi-function head especially for water-cleaning machines comprises a first main body which exhibits a conduit for a washing liquid, extending along a longitudinal axis from an inlet to an outlet and a portion having a narrowed transversal section; a nozzle housed in the conduit; an auxiliary body inserted in the conduit and constituting a frustoconical seating for a front end of the nozzle; means for conveying the washing liquid interpositioned between the inlet and the portion having a narrowed transversal section and forming upstream of the nozzle at least one oblique jet with respect to the longitudinal axis in order to give the nozzle a rotating and conical motion with a vertex in the frustoconical seating; and means for regulating a trim of the head for translating the auxiliary body and the nozzle along the longitudinal axis between a retracted first operating position for obtaining a high-pressure rotating jet, an intermediate second operating position, for obtaining a high-pressureType: GrantFiled: August 4, 2004Date of Patent: February 13, 2007Assignee: Arrow Line S.r.l.Inventor: Roberto Amaduzzi
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Patent number: 7156322Abstract: An irrigation sprinkler unit includes a tubular housing enclosing a speed reducing drive which is driven by a water actuated turbine wheel and rotates a rotary nozzle head at a substantially slower speed. The drive also rotates a tubular valve member within an annular valve body within the housing, and the valve member and valve body have cooperating radial ports which automatically and continuously vary the flow rate of water through the housing for continuously varying the radial distance of a water stream discharged from the nozzle head.Type: GrantFiled: September 22, 2004Date of Patent: January 2, 2007Inventor: Charles J. Heitzman
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Patent number: 7134613Abstract: A turbine assembly for a rotary sprinkler head includes a flow control valve, a turbine housing having a fluid inlet and fluid outlet ports, and a rotor mounted in the housing. The flow control valve is moveable between a closed position and a maximum open position, and is spring biased towards the closed position in which all of the fluid flowing into the sprinkler head initially flows into the turbine assembly. When the flow rate through the sprinkler head is sufficient to open the valve, a portion of the fluid flow passes through the valve to bypass the turbine assembly. As the flow rate continues to increase, the valve opens further until it reaches the maximum open position. Once the valve is opened to a predetermined point, as it opens further, up to the maximum position, the valve also increasingly throttles the fluid outlet ports up to a point short of complete blockage of the outlet ports.Type: GrantFiled: February 9, 2004Date of Patent: November 14, 2006Inventor: Carl L. C. Kah, III
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Patent number: 7118051Abstract: A rotor nozzle includes a nozzle housing having an inlet opening at one end and an outlet opening at another end and has a rotor which is arranged in a turbulence chamber and which is provided at its front end facing the outlet opening. A nozzle is supported in a cup bearing and has an inflow opening. A bypass device changes a radial or a tangential component of the liquid flowing into the turbulence chamber, which sets the rotor into rotation. A control surface is provided in the turbulence chamber. A restoring device is provided which is active between the front end of the rotor and the rear rotor end, wherein as the rotor rotary speed increases, the inclination of the rotor increases against the action of a restoration force of the restoring device and the restoring device reduces the rotor inclination as the rotor rotary speed decreases.Type: GrantFiled: August 11, 2005Date of Patent: October 10, 2006Inventor: Anton Jager
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Patent number: 7114666Abstract: A shower head having dual turbines. The shower head includes a body having an inlet for connection to a water conduit, a first outlet nozzle formed on the body, a second outlet nozzle formed on the body, a first turbine operably connected to the first outlet nozzle, and a second turbine operably connected to the second outlet nozzle. The shower head may include a flow actuation system taking the form of an actuator ring, a valve connected to the actuator ring and forming a flow channel, a first actuation point defined on the actuator ring, a second actuation point defined on the actuator ring, and a plunger situated within the flow channel. The plunger extends radially outwardly from a center of the valve when aligned with one of the first and second actuation points.Type: GrantFiled: December 9, 2003Date of Patent: October 3, 2006Assignee: Water Pik, Inc.Inventors: Harold A. Luettgen, Gary D. Golichowski, Gary L. Sokol
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Patent number: 7104472Abstract: A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine of the sprinkler system. This turbine configuration together with a stator assembly that regulates fluid flow to the turbine control nozzle rotation despite variations in fluid flow. In particular, the chamfered spokes counteract the spin of the turbine in direct relation to the amount of water that bypasses the driving blades of the turbine.Type: GrantFiled: July 25, 2005Date of Patent: September 12, 2006Assignee: The Toro CompanyInventor: Steven C. Renquist
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Patent number: 7080794Abstract: A turbine assembly for use with a rotary atomizer rotates an atomizer bell for atomizing paint. A turbine housing is disposed within the rotary atomizer. A locking element is received by the turbine housing. A rotary shaft is rotatably supported within the turbine housing and has a distal end adapted to receive the atomizer bell. The distal end extends outwardly from the turbine housing. The rotary shaft has a proximal end adapted to receive the locking element. The locking element is moveable between a neutral position and a locking position for locking the rotary shaft in a non-rotatable position.Type: GrantFiled: February 18, 2004Date of Patent: July 25, 2006Assignee: Dürr Systems, Inc.Inventors: Michael Baumann, Harry Krumma
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Patent number: 7040553Abstract: A Pelton type turbine is mounted in a riser of a pop-up sprinkler for rotation about a horizontal axis and drives a central bevel pinion gear through a gear train reduction. Upper and lower bevel gears supported on a vertical drive shaft are simultaneously driven in opposite directions by the central bevel pinion gear. A clutch slides up and down along the drive shaft to engage radially extending teeth formed on its upper and lower sides with complementary teeth formed on the upper and lower bevel gears. One end of a yoke is coupled to the clutch and the other end is moved vertically by an over-center mechanism to shift the direction of rotation of a nozzle turret connected to the upper end of the drive shaft. The over-center mechanism is tripped back and forth by a shift disc engaged by a pair of tabs of a turret coupling assembly.Type: GrantFiled: July 3, 2001Date of Patent: May 9, 2006Assignee: Hunter Industries, Inc.Inventor: Michael L. Clark
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Patent number: 7028920Abstract: The present invention provides a sprinkler with both a reversing part-circle mode and a non-reversing full-circle mode. More specifically, the present invention provides a mechanism for disengaging sprinkler arc stops, allowing for a full circle, non-reversing watering pattern.Type: GrantFiled: March 10, 2004Date of Patent: April 18, 2006Assignee: The Toro CompanyInventors: Matthew R. Hekman, Greg N. Shaw
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Patent number: 6991362Abstract: A tank agitator connects to a low head feed and causes agitation by discharging through a port that might rotate, oscillate, or otherwise issue a pulsing stream. This agitator has a housing with a turbine plenum and an exhaust plenum. A turbine in the turbine plenum spins by the flowthrough of the feedwater and exhausts to the exhaust plenum. A hollow drive shaft is spun by the turbine and extends through the exhaust plenum and to terminate outside the housing. It has an aperture that allows water in the exhaust plenum to flow into its lumen. A nozzle caps the shaft and is bent such that the discharge issuing therefrom sweeps in circles with the spinning of the drive shaft. A variant form of the agitator includes a drive train that incorporates a drag link to convert the spinning input of the turbine into an oscillating output in the drive shaft. In another variant form, the discharge is pulsed.Type: GrantFiled: December 1, 2003Date of Patent: January 31, 2006Inventor: Anthony E. Seaman
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Patent number: 6945471Abstract: A rotary sprinkler having an adjustable arc segment whose angular extent and absolute direction relative to the ground are represented by an arc indicator, which arc indicator may comprise a band whose visible length represents the angular extent and whose position on the sprinkler points to the direction. The sprinkler may have the arc segment adjusted by a movable arc limit stop that is coupled to a toggle member only at drive reversal, and the sprinkler may be converted to full circle operation by raising the arc limit stop relative to a cooperating trip tab. A buckling spring assembly used to shift the drive comprises a compression spring held between two spaced pivot members, and the drive can be built in continuous and intermittent drive versions by replacing a few normal rotary gears with multilated gears. A friction clutch having asymmetric teeth for smooth operation prevents damage to the drive during forced nozzle rotation.Type: GrantFiled: October 22, 2001Date of Patent: September 20, 2005Assignee: The Toro CompanyInventors: Jeff R. McKenzie, Peter Janku, Rebecca R. Lichte, Chad P. McCormick
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Patent number: 6942164Abstract: A rotating stream sprinkler of the type having a rotatable deflector with spiral vanes engaged by one or more water jets for imparting a rotary drive torque to the deflector, which converts the jets into a plurality of relatively small outwardly projected water streams swept over the surrounding terrain to irrigate adjacent vegetation. The sprinkler includes a speed governor having a turbine driven orbiter with first and second gears meshed respectively with a stator gear and a driven gear having different numbers of gear teeth, wherein the driven gear is carried by the deflector for rotation therewith. The turbine rotatably drives the orbiter on an eccentric axis, to react against the stator gear and thereby rotatably drive the driven gear and deflector with a substantial speed reduction. The speed governor thus regulates deflector speed for slowly sweeping the projected water streams over the adjacent landscape.Type: GrantFiled: February 28, 2003Date of Patent: September 13, 2005Assignee: Rain Bird CorporationInventor: Samuel C. Walker
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Patent number: 6929194Abstract: In a turbine driven rotary irrigation sprinkler having a fixed stator with means for bypassing a portion of the water entering the sprinkler around the turbine so as to be able to adjust and control the rate of sprinkler rotation, the improvement of a rotatable stator cooperating with the fixed stator to provide infinite adjustability between the no bypass flow and full bypass flow conditions.Type: GrantFiled: February 12, 2003Date of Patent: August 16, 2005Assignee: Rain Bird CorporationInventor: Kenneth L. Lawson
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Patent number: 6921030Abstract: A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine of the sprinkler system. This turbine configuration together with a stator assembly that regulates fluid flow to the turbine control nozzle rotation despite variations in fluid flow. In particular, the chamfered spokes counteract the spin of the turbine in direct relation to the amount of water that bypasses the driving blades of the turbine.Type: GrantFiled: November 21, 2002Date of Patent: July 26, 2005Assignee: The Toro CompanyInventor: Steven C. Renquist
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Patent number: 6896201Abstract: A shower bath tap comprised of a seat, an adapter, a circular water outlet tube, a rotation water outlet base, a diversion mechanism, and a depression handle; the adapter being pivoted to water supply lines on the wall and the depression handle being connected to a pivoting rod at the seat to depress the seat; the diversion mechanism being connected to the bottom of the seat; the circular water outlet tube and the rotation water outlet base being respectively connected to the seat; and the diversion mechanism controlling whether the water is to be delivered through the circular water outlet tube or to the rotation water outlet base.Type: GrantFiled: January 16, 2003Date of Patent: May 24, 2005Assignee: Globe Union Industrial Corp.Inventor: Scott Ouyoung
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Patent number: 6883727Abstract: A rotating stream sprinkler of the type having a rotatable vaned deflector for stepwise sweeping of relatively small water streams over surrounding terrain to irrigate adjacent vegetation. The sprinkler includes a turbine driven ball drive rotor having at least one drive ball carried by centrifugal force into repetitious impact engagement with one or more raised anvils on the deflector for incrementally displacing the deflector in a succession of small rotational steps. A speed control brake includes a brake pad interposed between a friction surface on the deflector and a nonrotating brake disk to provide a variable friction force to maintain deflector rotation substantially constant within a range of normal water supply pressures and flow rates.Type: GrantFiled: August 19, 2003Date of Patent: April 26, 2005Assignee: Rain Bird CorporationInventor: Lino De Los Santos
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Patent number: 6869026Abstract: A rotary sprinkler having an adjustable arc segment whose angular extent and absolute direction relative to the ground are represented by an arc indicator, which arc indicator may comprise a band whose visible length represents the angular extent and whose position on the sprinkler points to the direction. The sprinkler may have the arc segment adjusted by a movable arc limit stop that is coupled to a toggle member only at drive reversal, and the sprinkler may be converted to full circle operation by raising the arc limit stop relative to a cooperating trip tab. A buckling spring assembly used to shift the drive comprises a compression spring held between two spaced pivot members, and the drive can be built in continuous and intermittent drive versions by replacing a few normal rotary gears with multilated gears. A friction clutch having asymmetric teeth for smooth operation prevents damage to the drive during forced nozzle rotation.Type: GrantFiled: June 5, 2003Date of Patent: March 22, 2005Assignee: The Toro CompanyInventors: Jeff McKenzie, Chad Philip McCormick, Peter Janku
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Patent number: 6863231Abstract: Rinsing equipment, especially for mixing containers, including a socket housing with an interior pressure rinsing valve and an upright valve tube, wherein a spraying plate is seated on this valve tube. The spraying plate may have a trough-shaped depression or run out into star-shaped guiding cross members. The spraying equipment may include several upwardly or horizontally directed nozzles. The spraying plate may also include a water distribution chamber.Type: GrantFiled: November 20, 2002Date of Patent: March 8, 2005Assignee: Schicker & Schaefer GmbHInventor: Klaus Schaefer
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Patent number: 6848632Abstract: A frusto-conical strainer is mounted on the lower end of a pop-up riser for filtering out debris from water entering the lower inlet end of a surrounding outer housing to prevent clogging of the nozzle orifice or damage to mechanical components within a sprinkler. A cylindrical scrubber including a circumferential array of resilient arms is anchored at the lower inlet end of the outer housing. Wiper blades on the upper ends of the arms press against the outer surface of the strainer to scrape debris and algae therefrom as the riser extends and retracts. The strainer may have finer and coarser mesh sections for different levels of filtering in a sprinkler having multiple internal water flow paths. A plurality of circumferentially spaced projections on the strainer deflect past a plurality of circumferentially spaced ribs formed on the interior wall of the outer housing to provide a riser ratchet mechanism.Type: GrantFiled: November 2, 2001Date of Patent: February 1, 2005Assignee: Hunter Industries, Inc., A Delaware CorporationInventor: Michael L. Clark
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Patent number: 6808129Abstract: A spraying device for a lawn sprinkler is equipped with a circular base mount, a coupling board, a rotary sprinkling cover, a central flexible control piece and a water sprinkling blade assembly wherein the center of the circular base mount is disposed a water outlet having a securing hole in registration with the downward protrusion of the coupling board. The thermal meltable ring on the coupling board is used to make the coupling board secured to the rotary sprinkling cover by way of ultrasonic melting art. The inner space of the rotary sprinkling cover is divided into an inner and outer sections. At the center of the rotary sprinkling cover is disposed a cavity for housing of the retaining part, a spring, a support member and a seal ring and a water outlet screen cap of the central flexible control piece.Type: GrantFiled: May 13, 2003Date of Patent: October 26, 2004Assignee: Yuan Mei Corp.Inventor: King Yuan Wang
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Patent number: 6796273Abstract: 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.Type: GrantFiled: June 8, 2002Date of Patent: September 28, 2004Inventor: Paul Michael Muscarella
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Publication number: 20040164178Abstract: 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.Type: ApplicationFiled: February 6, 2004Publication date: August 26, 2004Inventor: Carl L.C. Kah,
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Patent number: 6766967Abstract: A high-pressure rotary nozzle includes a magnetic coupling for the purposes of driving a rotor body within the nozzle housing. The nozzle housing defines an internal chamber, and a propulsion ring is retained within the housing such that a liquid introduced into the propulsion ring causes the propulsion ring to rotate and passes into the chamber. The rotor body is pivotally supported within the chamber and is operably coupled to the propulsion ring such that the rotor body moves along with the propulsion ring. The rotor body rotates about the housing, such that the liquid exits the chamber in a rotating jet.Type: GrantFiled: May 7, 2002Date of Patent: July 27, 2004Assignee: GP Companies, Inc.Inventors: Jaime L. Harris, Gary A. Brown, Brad S. Kessler
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Patent number: 6736334Abstract: A sprinkler includes a riser having a lower end for receiving a pressurized fluid and a nozzle that is mounted at an upper end of the riser for rotation about an axis. A turbine is mounted for rotation inside the riser. A drive mechanism connects the turbine to the nozzle so that rotation of the turbine by the pressurized fluid rotates the nozzle. The sprinkler includes mechanisms for preventing over-spinning of the turbine when the pressurized fluid is air or a mixture of air and water. Damage to the turbine drive shaft or its bearings due to over-spinning of the turbine is thereby avoided. In one version of the sprinkler, the over-spinning prevention mechanism applies a brake force to the turbine. In another version of the sprinkler, the over-spinning prevention mechanism re-directs air or a mixture of water and air around the turbine.Type: GrantFiled: May 1, 2001Date of Patent: May 18, 2004Assignee: Hunter Industries, Inc.Inventors: Richard E. Hunter, William D. Holton, Loren W. Scott
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Patent number: 6676037Abstract: A rotary spray nozzle is provided in a housing which has one or more water inlets that direct the incoming water flow in a direction tangential to the inner walls of the housing. This creates a circular or swirling motion of water within the housing which in turn imparts a rotary motion to the nozzle. The liquid or water in the housing exits the housing through the rotating nozzle to thereby provide a rotary spray.Type: GrantFiled: February 20, 2001Date of Patent: January 13, 2004Inventor: Kipley Roydon Marks
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Patent number: 6655830Abstract: A tank agitator connects to a low head feed and causes agitation by discharging through a port that might rotate, oscillate, or otherwise issue a pulsing stream. This agitator has a housing with a turbine plenum and an exhaust plenum. A turbine in the turbine plenum spins by the flowthrough of the feedwater and exhausts to the exhaust plenum. A hollow drive shaft is spun by the turbine and extends through the exhaust plenum and to terminate outside the housing. It has an aperture that allows water in the exhaust plenum to flow into its lumen. A nozzle caps the shaft and is bent such that the discharge issuing therefrom sweeps in circles with the spinning of the drive shaft. A variant form of the agitator includes a drive train that incorporates a drag link to convert the spinning input of the turbine into an oscillating output in the drive shaft. In another variant form, the discharge is pulsed.Type: GrantFiled: November 30, 2002Date of Patent: December 2, 2003Inventor: Anthony E. Seaman
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Patent number: 6627809Abstract: A carrier pocket engineering technique used to provide superlattice structures having relatively high values of the three-dimensional thermoelectric figure of merit (Z3DT) is described. Also described are several superlattice systems provided in acordance with the carrier pocket engineering technique. Superlattice structures designed in accordance with this technique include a plurality of alternating layers of at least two different semiconductor materials. First ones of the layers correspond to barrier layers and second ones of the layers correspond to well layers but barrier layers can also work as well layers for some certain carrier pockets and vice-versa. Each of the well layers are provided having quantum well states formed from carrier pockets at various high symmetry points in the Brillouin zone of the structure to provide the superlattice having a relatively high three-dimensional thermoelectric figure of merit.Type: GrantFiled: November 9, 2000Date of Patent: September 30, 2003Assignee: Massachusetts Institute of TechnologyInventors: Takaaki Koga, Mildred S. Dresselhaus, Xiangzhong Sun, Steven B. Cronin
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Patent number: 6622940Abstract: A water sprinkler includes a main body, a primary nozzle, and an auxiliary nozzle. The main body is provided with a water admitting pipe in communication with the primary nozzle by which a portion of the incoming water is distributed to the areas farther from the sprinkler. The auxiliary nozzle is rotatably mounted on the top end of the main body and is provided with an inclined edge forming adjustably a gap in conjunction with an inclined guide edge of a water chamber of the main body. The rest of the incoming water is guided into the water chamber from which the water is distributed via the gap to the areas closer to the sprinkler.Type: GrantFiled: September 21, 2001Date of Patent: September 23, 2003Inventor: Huang-Fu Huang
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Patent number: 6595440Abstract: A handheld water powered spray device is provided that is comprised of a cleaning agent reservoir and a cleaning agent and water mixture control, that is capable of receiving detachable accessories, and that provides a water powered output source to power the detachable accessories in either a rotating or linear motion. The water powered spray device of the present invention also provides user controls for controlling the output power and for spraying water onto an object without powering of the attached accessory.Type: GrantFiled: April 27, 2001Date of Patent: July 22, 2003Inventors: Brian P. Moriarty, Brett J. Carter, Edward A. Uhl
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Publication number: 20030111550Abstract: A retaining supporter of a rotary sprinkler is disclosed. The retaining supporter has a cruciform cylindrical base at the lower half of the rotary sprinkler. Two plates with equal length are crossed with each other so as to form a cylindrical member with a cruciform cross section. The width of one plate is thicker than the other one, and the vertical surface of the wider plate is a curved surface and has a shape like an inverted triangle. When the lower half section of the fixing supporting element in inserted into the soil, it can be inserted easily. When the top section of the rotary sprinkler is connected with water pipe for water flow, the water flows through the interior of the fixing supporting element of the rotary sprinkler, so that water can be sprayed from the water outlet of the rotary sprinkler and moves the rotary device.Type: ApplicationFiled: December 17, 2001Publication date: June 19, 2003Inventor: Wen-Li Kuo
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Patent number: 6561199Abstract: An apparatus for cleaning the interior of a vessel for containing a sanitary product by ejecting a rotating stream of cleaning fluid. The apparatus features a stationary housing that forms an inlet for receiving a flow of cleaning fluid, a rotatable housing mounted for rotation on the stationary housing about a first axis, and a nozzle for ejecting the cleaning fluid, the nozzle being rotatably mounted on the rotatable housing so that the nozzle rotates about a second axis. A planetary gear train is driven by an impeller driven by the flow of cleaning fluid and drives the rotation of the rotatable housing. The planetary gear train is located between the apparatus inlet and the nozzle.Type: GrantFiled: May 31, 2001Date of Patent: May 13, 2003Assignee: Gamajet Cleaning Systems, Inc.Inventors: Bentley F. Gleeson, Andrew K Delaney, Minh Quang Le, Robert E. Delaney
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Patent number: 6554209Abstract: A combination hose nozzle and lawn sprinkler which is operable both as a hose nozzle by a user and as a lawn sprinkler when ground mounted. An internal jet and a member define a passageway for water to be directed from the passageway in a first configuration. A plurality of orifices are closed when the water is directed from the passageway in the first configuration and are open in a second configuration when the combination is used as a lawn sprinkler. A protuberance is provided for ground mounting. The orifices are provided in a member that may rotate when the combination is used in the ground mounted configuration.Type: GrantFiled: December 6, 2000Date of Patent: April 29, 2003Inventor: Simeon Djordjevic
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Publication number: 20030057296Abstract: A water sprinkler comprises a main body, a primary nozzle, and an auxiliary nozzle. The main body is provided with a water admitting pipe in communication with the primary nozzle by which a portion of the incoming water is distributed to the areas farther from the sprinkler. The auxiliary nozzle is rotatably mounted on the top end of the main body and is provided with an inclined edge forming adjustably a gap in conjunction with an inclined guide edge of a water chamber of the main body. The rest of the incoming water is guided into the water chamber from which the water is distributed via the gap to the areas closer to the sprinkler.Type: ApplicationFiled: September 21, 2001Publication date: March 27, 2003Inventor: Huang-Fu Huang
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Patent number: 6527204Abstract: A shower head includes a housing supporting a low speed rotary valve member driven by a high speed rotary turbine to produce a variable flow rate. The turbine also produces pulsations of water streams discharged from the housing and is shifted axially to produce continuous water streams. A manually actuated control valve and passages with pressure responsive flow control washers provide for selecting different ranges of variable flow or for bypassing the variable flow.Type: GrantFiled: July 23, 2001Date of Patent: March 4, 2003Inventor: Charles J. Heitzman
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Publication number: 20030015603Abstract: A spray cleaner (10) is provided for rotatingly cleaning an interior of a vessel or the like. The spray cleaner has a main body (12) and a rotating spray body (14). The main body is at a proximal end of the spray cleaner, and the rotating spray body is at a distal end of the spray cleaner. An internal flow conduit (22) in the main body of the rotating spray body communicates a fluid inlet in the main body to a plurality of spray nozzles (18) in at least one spray head which is a part of the rotating spray body. A drive train (30) for rotating the spray body is positioned in the main body, such that the flow conduit passes around the drive train in an annular passage coaxial with the drive train, providing cooling thereto. A vaned rotor (26) in the flow conduit is connected to an input shaft (28) of the drive train, which transfers torque to an output drive system (42) that is fixedly connected to the rotating spray body.Type: ApplicationFiled: August 14, 2002Publication date: January 23, 2003Inventors: Ivan Schreur, Doug Shawver, Dan O'Brien