In Or On Flow-passage Walls Patents (Class 239/489)
  • Patent number: 10220396
    Abstract: A nozzle pipe is to be coupled to a distal open end of an air blow-off tube of a blower apparatus for regulating the profile of an airflow blown out from the blow-off tube. The nozzle pipe comprises an outer tubular member and an inner tubular member coaxially disposed within the outer tubular member. The inner tubular member has a circumferential wall formed with apertures allowing air passage therethrough. The outer tubular member and the inner tubular member provides a first space therebetween to form a first air passage, while the inner tubular member provides a second space therein to form a second air passage. A plurality of rectifier fins are disposed inward from the outer tubular member, standing radially and extending longitudinally, and spaced apart circumferentially from each other. The fins extend inclined at an angle with reference to the longitudinal central axis of the tubular members.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 5, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Shinsuke Naka, Tomonobu Nashimoto, Yoshinori Shibata
  • Patent number: 9931602
    Abstract: An apparatus and method for increasing the mass transfer of a treatment substance into a liquid flowing in a pipe in a full pipe flow regime has a diversion conduit which receives a portion of the liquid. The portion of the liquid is mixed with a treatment substance and then reintroduced into the pipe at a downstream location through an injection structure. Between the diversion conduit, on the upstream side, and the injection structure, on the downstream side, there are a plurality of flow vanes disposed circumferentially about a cylindrical inner wall of the pipe, where each flow vane extends radially inward toward a central axis of the pipe, extending into the main stream flow of the liquid. Another embodiment of the invention has a flow grid located downstream of the injection structure.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: April 3, 2018
    Assignee: MAZZEI INJECTOR COMPANY, LLC
    Inventors: Angelo L. Mazzei, Srikanth S. Pathapati
  • Patent number: 9828960
    Abstract: A valve for metering a flowing medium, e.g., an injection valve for fuel-injection systems of internal combustion engines, is provided. In an embodiment, the valve has a sealing seat formed by a valve seat and a sealing head of a valve member able to be driven to execute lift motions. The valve has a plurality of spray orifices having hole-entry openings situated downstream from the sealing seat and sealable by the sealing seat. The valve has flow-through channels situated upstream from the sealing seat, which extend parallel to each other and discharge in front of the sealing seat. In order to achieve a unified upstream flow approach of all hole-entry openings of the spray orifices, e.g., if the number of spray orifices and flow-through channels differs, an upstream-flow shaper having at least one flow-through opening is situated between sealing seat and hole-entry openings of the spray orifices.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: November 28, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventor: Marco Vorbach
  • Patent number: 9381034
    Abstract: Water jet surgical instruments comprising a feed line for supplying fluid in one flow direction and one exit nozzle for ejecting the fluid in the form of a fine jet displaying a defined geometric opening configuration are known. In order to be able to widen the jet a fluid chamber is provided—viewed in the direction of flow—upstream of the exit nozzle. A disturbance device is provided in or on the fluid chamber, said disturbance device being able to generate a turbulent flow inside the fluid chamber.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 5, 2016
    Assignee: ERBE ELEKTROMEDIZIN GMBH
    Inventor: Dietmar Karwei
  • Patent number: 9296139
    Abstract: Injection-molding nozzles having any one or more of improved heat transfer, wear resistance, and melt transfer from a manifold to a mold. The operation and durability of a nozzle can be improved by integrally layering multiple materials to create a multi-property nozzle that is a unitary, monolithic, and seamless structure. For example, the heat transfer properties of a nozzle is improved by integrally layering certain materials in the nozzle housing such that heat is more effectively dissipated or transferred throughout the nozzle to maintain and promote melt flow. One or more components of the nozzle can be merged and thus seamlessly formed to improve melt flow by reducing joints that would cause the melt to hang up within the nozzle and, concomitantly, reducing manufacturing and assembly time. The process used to unitarily form some or all of the nozzle may also be used to create complex geometric configurations therein.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: March 29, 2016
    Assignee: Husky Injection MOLDING SYSTEMS LTD.
    Inventors: Patrice Fabien Dezon-Gaillard, Sami Samuel Arsan
  • Patent number: 8857740
    Abstract: A two-fluid nozzle is provided. The two-fluid nozzle includes a main nozzle, a mixing chamber and a nozzle orifice connected to the mixing chamber and positioned downstream of the mixing chamber. A ring of secondary air nozzles surrounding the nozzle orifice is also provided.
    Type: Grant
    Filed: February 17, 2007
    Date of Patent: October 14, 2014
    Inventor: Dieter Wurz
  • Patent number: 8844844
    Abstract: A misting nozzle includes a body having a hole centrally defined therein and a flange radially extending therefrom to divide the body into a connecting section and a mounting section. At least two ditches are longitudinally and equally defined in the mounting section, and each laterally communicates with the hole. A distal end of the smooth portion is formed with an abutment and a round recess centrally defined in the abutment. At least two grooves are respectively equally defined in the abutment, wherein each groove is defined along a corresponding one of the tangents of the round recess and has two opposite ends respectively communicating with the round recess and a corresponding one of the ditches. A cap is airtightly mounted onto the mounting section of the body. A funnel-shaped hole is defined in a bottom of the cavity and communicates with the recess.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Yuan Pin Industrial Co., Ltd.
    Inventor: Pai-Chou Hsieh
  • Publication number: 20140027542
    Abstract: A fuel injection valve is disclosed with enhanced uniformity of a swirl flow in the circumferential direction. The valve includes a swirling chamber having an inner wall surface with a helical curve and a swirling passage for guiding fuel into the chamber. The valve is formed such that the center of a circle as the basis of the helical curve and the center of a fuel injection hole open in the swirling chamber align with one another. The joint between the passage for swirling and the inner circumferential wall on the downstream side of the chamber at which both walls intersect is positioned between a line from the center of the hole to a point at which the curvature of the swirling chamber shape starts to change; and a tangent line of the side wall of the hole so drawn that it is in parallel to the line segment.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 30, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuki YOSHIMURA, Yoshio OKAMOTO, Eiji ISHII, Noriyuki MAEKAWA, Takahiro SAITO, Atsushi NAKAI
  • Publication number: 20130327851
    Abstract: A fuel injection valve includes: a nozzle body having a nozzle hole formed in a front edge portion thereof; a spiral flow path that gives a swirling component to a fuel which passes through the nozzle body toward the nozzle hole; and a pre-injection swirl flow generating unit that causes the fuel to flow through the spiral flow path before the nozzle hole is opened, wherein the pre-injection swirl flow generating means is communicated with the spiral flow path at a downstream side of the spiral flow path, and includes a suction chamber whose volume is expanded before the nozzle hole is opened.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 12, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuo Kobayashi, Keisuke Komori
  • Publication number: 20130270368
    Abstract: A fuel injection valve 1 includes: a nozzle body 10 having a nozzle hole 11 formed at the tip thereof; a needle 20 that is slidably provided in the nozzle body 10, forms a fuel introduction path 21 between the needle 20 and the nozzle body 10, and is seated on a seat portion 12 in the nozzle body 10; a pressure chamber 13 that stores fuel introduced through the fuel introduction path 21; a relay chamber 50 that is located closer to the base end side than the seat portion 12 is, and closer to the tip side than the pressure chamber 13 is; a first helical fuel passage 60 that connects the pressure chamber 13 to the relay chamber 50, and applies a flow to fuel, the flow swirling around an axis A of the needle 20; and second helical fuel passages 70 that connect the relay chamber 50 to a seat space 15 that is formed between the seat portion 12 and the needle 20 when the needle 20 is lifted up.
    Type: Application
    Filed: December 20, 2010
    Publication date: October 17, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tatsuo Kobayashi
  • Patent number: 8528838
    Abstract: A push-button for a pressurised liquid distribution system, the push-button including a body onto which an end piece is mounted around an insert so as to form a distribution chamber between said end piece and the insert, the distribution chamber being in communication with a supply channel intended to be mounted on a feed tube for the pressurised liquid, the distribution chamber being successively connected to upstream channels, downstream channels and distribution channels, the distribution channels each converging towards an outlet opening while being designed to enable the impaction of the liquid jets dispensed by the openings, the upstream and downstream channels extending longitudinally while forming an upstream and downstream fluid flow section, respectively, in the distribution chamber, the downstream section having an average transverse surface which is less than the average transverse surface of the upstream section.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: September 10, 2013
    Assignee: Rexam Dispensing Systems S.A.S.
    Inventors: Herve Imenez, Jean-Pierre Songbe
  • Patent number: 8448881
    Abstract: An apparatus and method for minimizing and/or preventing thermal degradation of fuel in a fuel injector is disclosed. The body of the injector includes a fuel gallery with a contoured scarf formed therein. The scarf is configured to minimize and/or prevent fuel recirculation thus reducing the likelihood that fuel will dwell in an area long enough to sufficient to cause the degradation of the fuel.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: May 28, 2013
    Assignee: Rolls-Royce Power Engineering PLC
    Inventors: Kenneth James Young, Yann Courbariaux, Michel Houde, Daniel Haggerty, Philip Buelow
  • Publication number: 20130112779
    Abstract: The air gun comprises a substantially cylindrical-shaped external case (2), provided at one end with a connection element (8) suitable to enable the connection of the air gun (1) with a device for supplying a fluid to be sprayed, and provided at the opposite end with an expulsion device (10) suitable to enable the outlet of the fluid to be sprayed towards the outside. Inside the case (2) is arranged a vortex generator device (9) provided with a plurality of internal walls (91) having curvilinear profiles. The walls (91) define a plurality of separated helical pipes (93), in order to give the fluid to be sprayed a helical rotatory motion.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 9, 2013
    Applicant: IBIX S.R.L.
    Inventor: Caterina Giovannini
  • Patent number: 8376247
    Abstract: A fire extinguishing or explosion suppression device comprises a chamber and a nozzle. The nozzle defines a discharge pathway from the chamber. The chamber has an inlet for pressure-driven introduction of a liquid into the chamber. The chamber is shaped so that a gas contained in the chamber before the introduction of the liquid is entrained into the liquid during the pressure driven introduction of the liquid such that a mixture of the liquid and the gas is discharged through the nozzle to create a mist for extinguishing a fire or suppression of an explosion. After the gas has been discharged from the chamber, the nozzle produces a spray having a core of larger liquid droplets with the core being surrounded by smaller liquid droplets.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: February 19, 2013
    Assignee: Kidde IP Holdings Limited
    Inventors: Christian Manthey, Hans-Joachim Herzog, Robert George Dunster
  • Patent number: 8074901
    Abstract: A nozzle for a mist lubricator system has an emitter head located in a tubular housing. The emitter head has tapered passageways terminating at an end from which lubricant drops are directed to a target to be lubricated. The emitter head can be incorporated in lubricator systems of various types, including those utilizing a cycling feed metering system. A nozzle constructed in accordance with the present invention can be used in reduced airflow systems and exhibits substantially lessened lubricant loss during low and no airflow periods.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: December 13, 2011
    Assignee: Uniwave, Inc.
    Inventor: Elliot M. Cotler
  • Patent number: 7784716
    Abstract: A valve seat 14 having an injection hole 14b is fixed at one end of a hollow valve main body 15, a valve body 12 slidably supported so as to be separated from and brought into contact with the valve seat 14 to open and close the injection hole 14b and a swirler 16 for surrounding the valve body 12 to slidably support the valve body 12 and for imparting a swirling motion to fuel flowing into the injection hole 14b are equipped, a swirling groove 16b in the swirler 16 includes a curvature part 16b3 in a groove outlet, and a sectional configuration of the swirling groove 16b is constituted so that the depth of the central part is larger than the depth of the end part.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: August 31, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Norihisa Fukutomi, Mamoru Sumida
  • Patent number: 7533833
    Abstract: A watering nozzle assembly includes an adjustment member received in the barrel and an outlet device is connected to the adjustment member. The outlet device includes a rotatable member, a collar mounted to the rotatable member and a nozzle member connected to the rotatable member. An intermediate member is located between the rotatable member and the nozzle member. One side of the intermediate member has a plurality of rods and passages. Multiple apertures are defined in an outer periphery of the nozzle member. Multiple cone-shaped recesses are defined in an inner periphery of the nozzle member and enclose the apertures respectively. Multiple spiral grooves are defined in each of the cone-shaped recesses. When the cone-shaped recesses are sealed by the rods and a part of each of the spiral grooves are exposed beyond the rods so that mist water goes out from the apertures via the spiral grooves.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: May 19, 2009
    Inventors: King-Yuan Wang, Shun-Nan Lo
  • Patent number: 7448559
    Abstract: A fluid product spray head (40) comprises a spray orifice (45) and a spray profile (100) upstream from this spray orifice (45). Said spray profile has a swirling chamber (101) connected, during the spraying of the product, to the spray orifice (45) and to at least one non-radial channel (110) connected to the swirling chamber (101). The spray profile (100) is provided in the bottom of the spray head (40). A obturator (38) interacts with the spray orifice (45) while being able to be displaced and/or deformed between a closing position of the spray orifice (45) and an open position of the spray orifice (45). The inventive spray head (40) has an axially hollow sleeve (150) that accommodates the spray profile (100), and said obturator (38) axially displaces and/or deforms at least partially in said sleeve (150).
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: November 11, 2008
    Assignee: Valois S.A.S.
    Inventors: François Le Maner, Wilfrid Beaujour
  • Patent number: 7389951
    Abstract: A misting spray nozzle includes a hollow body having an interior wall descending from an upper end to a lower end. The interior wall tapers toward the lower end to form a choke. A channel section provides two fluid paths descending from an upper central aperture. A turbine is sized and shaped to fit closely within the choke and has spiral grooves on its outer surface. The turbine attaches to the body at its upper end and has a cone-shaped opening at its lower end. A conical core is sized and shaped to fit closely within the cone-shaped opening and has grooves spiraling in an opposite direction on its outer surface. The core is attached at its upper end to the turbine. The two sets of spiral grooves define a pair of intersecting fluid control paths that meet at the lower end of the body to create a dense mist.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: June 24, 2008
    Inventors: Viktor Feldman, Alex Gubenko
  • Publication number: 20080078846
    Abstract: A liquid condiment dispenser includes a container with a separation board to define an upper space and a lower space. An outlet is defined through a hollow body defining the lower space. A rod cooperated with a button extends through the separation board and has a first seal ring to removably seal the hole of the separation board. A second seal ring is securely engaged with an inner periphery of the second space so that when the rod is pushed, the first seal ring allows the liquid condiment in the upper space to flow to the lower space and liquid condiment is pushed from the outlet in the distal end of the hollow body. The rod is pushed upward by a spring to seal the hole again when releasing the button.
    Type: Application
    Filed: September 14, 2006
    Publication date: April 3, 2008
    Inventor: Jui-Cheng Tsai
  • Publication number: 20080061165
    Abstract: Dispensing member for a fluid product comprising a post and a spray nozzle, said post having an abutment surface and said spray nozzle comprising a transverse wall, an outlet orifice extending across said transverse wall, said outlet orifice being delimited by a lateral surface, at least one duct for supplying the fluid product to the outlet orifice, the said supply duct being delimited by the transverse wall and the abutment surface, being supplied with fluid product via a supply channel, emerging substantially tangentially relative to the lateral surface of the outlet orifice, and forming the only fluidic communication between the supply channel and the outlet orifice.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 13, 2008
    Inventors: Jean-Pierre Songbe, Bernard Clerget
  • Publication number: 20080011882
    Abstract: A trigger sprayer has a nozzle assembly that dispenses a spray of liquid in a fan pattern that is selectively oriented horizontally or vertically. The nozzle assembly includes a nozzle housing and nozzle cap mounted on the nozzle housing, where the nozzle cap is rotatable relative to the nozzle housing to direct a fan spray pattern of liquid from the nozzle cap in both a vertical and horizontal orientation, and prevent the discharge of liquid from the nozzle cap in cap positions between the horizontal and vertical orientations.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 17, 2008
    Inventors: Donald D. Foster, Philip P. Nelson
  • Patent number: 7111797
    Abstract: A fluid particle cleaner and method are disclosed. The invention provides a partition to a side of a fluid nozzle to form: a central cavity configured to define the fluid departing the surface into a central cavity vortex; and a side cavity adjacent the central cavity to define fluid escaping from the central cavity into a side vortex. The vortices interact in a counter-rotating and stationary fashion. The strong and smaller central vortex creates an upward air velocity field that forces any airborne particle to move away from the surface. The side vortex is designed to: connect the central vortex velocity field to the vacuum flow and allow airborne particles to remain suspended until they reach the vacuum flow; and create a decelerating field for high speed particles traveling parallel (horizontally) to the surface to increase the residence time in the central vortex with positive vertical velocity.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: September 26, 2006
    Assignee: International Business Machines Corporation
    Inventors: Raschid J. Bezama, Nike O. Medahunsi
  • Patent number: 6983896
    Abstract: A liquid atomizer comprising a housing fitted with an inlet for connecting to a liquid supply line and a cavity being in flow communication with the inlet and having a longitudinal axis. The housing has one or more outlet nozzles for emitting atomized liquid. A vortex generating member is received within the housing and is formed with at lest one vortex generating path generates a liquid vortex about an axis transversally extending relative to the longitudinal axis of the housing and extending opposite a respective outlet nozzle. Each of the vortex generating paths is in flow communication with the cavity and extends opposite a respective outlet nozzle.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: January 10, 2006
    Inventors: Yoel Zur, Gandin Vitaly, Zohar Katzman, David De Vires
  • Patent number: 6962299
    Abstract: A water deflector for use with a nozzle is disclosed. The nozzle has a water channel including a water inlet and a mouth from which water is dispersed. The water deflector comprises a shaft for passing through the water channel of the nozzle, the shaft having a lower end and an outer end, and an aperture along a part of its length between the lower and outer ends. A base member connects to the shaft at the lower end thereof, and has a width sufficiently large to prevent, in use, the base member from entering the water inlet of the water channel. Water passing through the water channel is deflected by the water deflector to alter the pattern of watering about the nozzle.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: November 8, 2005
    Inventor: John E. Hakala
  • Patent number: 6793150
    Abstract: A dispensing apparatus is provided for a pulverulent material entrained in a stream of a transporting gas or mixture of gases. The apparatus includes a first member and a second member. The first member includes an interior into which the stream flows and a perimetral discharge edge. The second member includes a side facing the interior and a perimetral discharge edge. A discharge opening is defined between the discharge edges of the first and second members. A dimension of the discharge opening is determined by one or more third members. Each third member has a first end adjacent the first member and a second end adjacent the second member. The third members have non-uniform transverse sections. A transverse section of each third member between its first and second ends has a smaller area than the transverse section of each third member at one its first and second ends.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: September 21, 2004
    Assignee: Illinois Tool Works, Inc.
    Inventors: John Schaupp, David M. Seitz
  • Patent number: 6764027
    Abstract: A fuel injector for fuel injection systems of internal combustion engines includes a valve needle and a valve-closure member mechanically linked to it, which cooperates with a valve-seat surface situated in a valve-seat member to form a sealing seat, and at least one swirl-producing element which is situated upstream from the sealing seat in the valve-seat member. One or more swirl channels which are open toward the upstream side of the valve-seat member are incorporated into the upstream side of the valve-seat member as a swirl-producing element.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: July 20, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Dantes, Detlef Nowak
  • Patent number: 6722586
    Abstract: The invention concerns an injector for the injection of fuel into the combustion chambers of combustion engines. Inside an injector housing (9) is located a nozzle needle (14), which is surrounded by a nozzle chamber (18). The nozzle needle (14) is moveable back and forth within the injector housing, and is aligned by the guiding sections (16, 22) inside the injector housing (9). A thick spring (11) pressed the nozzle needle against the injector (14) a ring canal (23) is formed between injector housing (9) and nozzle needle (14) and a conical section (33) of said nozzle needle (14) follows in the direction towards the seat (30).
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: April 20, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Bernhard Bonse, Friedrich Boecking
  • Patent number: 6517012
    Abstract: A method for modifying the swirl motion of a liquid in the swirl chamber of a nozzle, and a swirl generator for nozzles. Such nozzles are used in industrial burners, oil burners and installations for cleaning flue gas and spray-drying food. The invention provides a method and nozzle for adjusting the man droplet diameter at a constant volume flow rate on maintaining the droplet spectrum constant in case of adjustment of the volume flow rate. Partial flows are distributed across supply channels which differ in terms of their cross sections at their point of connection with the swirl chamber. When the partial flows are constituted by the sum of cross-sections of the channels branching off the corresponding flow. Thus, the sums of the cross-sections at the connection point with the swirl chamber are different.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: February 11, 2003
    Inventors: Günter Slowik, Jürgen Kohlmann
  • Patent number: 6419167
    Abstract: A dispenser (11) with an atomizing nozzle (15) contains a medium chamber (20) with the medium (24) to be discharged. The pump plunger (21) delivering the medium (24) is hydraulically operated by the pressure of a pressure fluid (25), which is manually applied by pressure on a pressure chamber (28) constructed as a squeezing bottle or bag. Several dispensers can be jointly manufactured and sold in chain form.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: July 16, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Karl-Heinz Fuchs
  • Patent number: 6382528
    Abstract: In an injection molding machine a mixer is provided that reduces the flow imbalances inherent in the melt as the flow branches within a manifold or other part of the injection machine. The mixer increase melt homogeneity by gradually mixing and changing the melt flow from all helical flow to all annular flow. The mixer provides an improved means for reducing flow imbalances that results in the elimination of weld lines and other part non-uniformities.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 7, 2002
    Assignee: Husky Injection Molding Systems, Ltd.
    Inventor: Abdeslam Bouti
  • Patent number: 6349886
    Abstract: A coinjection nozzle communicating with a mold cavity to form a multilayered article and an injection molding method are provided. The nozzle includes at least two flow channels communicating with an outlet, with each flow channel including at least one spiral groove that decreases in depth towards the outlet area to eliminate weld lines and dips in the resultant article.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: February 26, 2002
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Abdeslam Bouti
  • Patent number: 6089468
    Abstract: A flow channel is provided in a nozzle housing for resin flow, said flow channel having an inlet area for receiving resin and an outlet area for transferring resin to a mold cavity. An elongated shaft extends in the flow channel. At least one spiral groove is provided in the flow channel facing the shaft that decreases in depth towards the outlet area.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: July 18, 2000
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Abdeslam Bouti
  • Patent number: 5951922
    Abstract: A system for aerating substantial bodies of water which includes a cavitating mixer-injector to inject air into a stream passing through the injector, the mixer-injector having twisting and straightening vanes in a respective conveying and an expanding portion, a nozzle with twisting vanes in a constricting portion, and a conduit connecting the outlet of the mixer-injection to the inlet of the nozzle. The conduit preferably provides dwell time for a suitable amount of injected air to dissolve in the stream before entering the nozzle.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: September 14, 1999
    Inventor: Angelo L. Mazzei
  • Patent number: 5894995
    Abstract: A stream preparation nozzle which establishes dynamic properties in regions of an already mixed stream of treatment water that comprises water and a treatment substance. The nozzle discharges directly into a body of untreated water. The dynamic properties of the stream created by this nozzle improve the infusion of the treatment water and its treatment substances into the water in the body of water.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: April 20, 1999
    Inventor: Angelo L. Mazzei
  • Patent number: 5775446
    Abstract: A nozzle insert for a rotary rock bit has an orifice with a generally circular central region and a plurality of angularly spaced, non-circular outer regions around the periphery thereof so that flow of mud through each outer region develops a vortex pattern that increases entrainment of rock particles to prevent bit balling, and decreases overbalance pressure to enhance rate of penetration.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: July 7, 1998
    Assignee: Nozzle Technology, Inc.
    Inventor: W. Gerald Lott
  • Patent number: 5465906
    Abstract: An electromagnetically actuatable injection valves which tear away the fuel stream emerging from at least one injection port and atomize it as finely as possible. One possibility is to force a high velocity component in the radial direction upon the fuel prior to its leaving the injection valve; this is achieved with swirl generators. The novel injection valve has a valve seat face, which in a swirl segment outside a sealing face, is provided with four swirl conduits, which discharge into an injection conduit and terminal port with a lateral offset relative to a longitudinal valve axis. The novel injection valve is especially suitable as an injection valve for fuel injection systems of mixture-compressing internal combustion engines with externally supplied ignition.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: November 14, 1995
    Assignee: Robert Bosch GmbH
    Inventor: Waldemar Hans
  • Patent number: 5267692
    Abstract: The adjustable nozzle assembly for a trigger sprayer comprises a nose bushing and an integral nozzle cap capable of being screwed upon the bushing. The nozzle cap has a discharge orifice located in its front face and a flange skirt extending from a front wall thereof. A nozzle cap flange skirt is threaded inside the rear portion thereof and an internally contoured or stepped surface is located forwardly of the threads to provide reduced diameter annular surfaces at two locations rearward of an inner wall surface of the cap and forward of the internal threads inside the nozzle cap flange skirt.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: December 7, 1993
    Assignee: AFA Products Inc.
    Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
  • Patent number: 5071683
    Abstract: Method and device for forming a gellified polyrethane layer on a surface, notably of a mould, by spraying a liquid reaction mixture comprising polyol and isocyanates and which has a viscosity between 20 and 2000 centipoises. The mixture is sprayed in the form of a film of liquid and/or raindrops of which the main part has a mean diameter (Medium Volume Diameter; "M.V.D.") which, according to the standards ASTM E 779-81, is larger than 100 microns and preferably larger than 500 microns.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: December 10, 1991
    Assignee: Gechem and Recticel
    Inventors: Jacques Verwilst, Hugo De Winter, Andre Braeckman, Bernard De Baes
  • Patent number: 5061457
    Abstract: Apparatus for liquid feed dispersion in fluid catalytic cracking systems is disclosed wherein an improved fluidized catalytic cracking nozzle assembly having a nozzle unit so constructed that substantially all liquid fed through the unit is converted to mist-sized particles over a wide-angle dispersion pattern, the unit being recessed within a protective pipe having a shield on the inside thereof in the area of the recess, without concurrent addition of steam to affect liquid that may flow therethrough.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: October 29, 1991
    Assignee: Chevron Research & Technology Company
    Inventors: C. Richard Hsieh, Desmond F. King, Frederick A. Pettersen, Cathleen A. Shargay
  • Patent number: 5058810
    Abstract: The present invention is fuel metering and atomizing valve for an internal combustion engine fuel supply device. The valve comprises a nozzle in which is formed an injection hole having an upstream chamber defining gradually decreasing areas towards the mouth of the injection hole for separating the fuel jet. The present invention provides an injection hole that is easy to machine and which effectively separates the fuel jet issuing from the chamber.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: October 22, 1991
    Assignee: Weber S.r.l.
    Inventors: Silverio Bonfiglioli, Francesco Morini
  • Patent number: 4991778
    Abstract: The adjustable nozzle assembly for a trigger sprayer comprises a nose bushing and an integral nozzle cap capable of being screwed upon the bushing. The nozzle cap has a discharge orifice located in its front face and a flange skirt extending from a front wall thereof. A nozzle cap flange skirt is threaded inside the rear portion thereof and an internally contoured or stepped surface is located forwardly of the threads to provide reduced diameter annular surfaces at two locations rearward of an inner wall surface of the cap and forward of the internal threads inside the nozzle cap flange skirt.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: February 12, 1991
    Assignee: AFA Products, Inc.
    Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
  • Patent number: 4989790
    Abstract: The nozzle cap, spring valve and body assembly for a trigger sprayer comprises a nozzle cap, a spring valve and a body. The nozzle cap is capable of being screwed upon the nose bushing portion of the body. The nozzle cap has an outlet orifice located in its front face and a sleeve extending rearwardly from a front wall thereof. The sleeve is threaded inside the rear portion thereof and has an internally contoured surface on a short annular formation that is located forwardly of the threads on the back side of the front wall to provide an inner annular surface and an outer annular surface rearward of an inner wall surface of the nozzle cap and forward of the internal threads inside the sleeve. The nose bushing portion of the body has a cavity in which is received the spring valve.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: February 5, 1991
    Assignee: AFA Products, Inc.
    Inventors: Douglas S. Martin, Wilhelmus J. J. Maas
  • Patent number: 4977950
    Abstract: A molten metal spray-depositing apparatus employs an ejection nozzle for receiving a molten metal stream and having a configuration for confining and imparting mechanically an angular momentum thereto which produces stream break-up into a metal particle spray when the stream becomes unconfined upon exiting the nozzle. There are stationary and rotating versions of the ejection nozzle. The stationary ejection nozzle has a flow channel with internal angular elements, such as spiral grooves, which engage the moving molten metal stream to impart angular momentum thereto as it passes through the channel. The rotating ejection nozzle may have internal elements within the flow channel, such as notches or serrations, which engage the moving molten stream and cause it to rotate with the nozzle as it passes through the channel. The two nozzles can also be combined to impart the angular momentum and accomplish melt stream break-up.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: December 18, 1990
    Assignee: Olin Corporation
    Inventor: George J. Muench
  • Patent number: 4967964
    Abstract: An atomizing nozzle is disclosed, which is of simple, inexpensive construction while being capable of highly efficient atomization of liquids. A nozzle case is formed with a cylindrical recess for closely receiving a disc-shaped whirl body and separate nozzle element. The outer wall of the whirl body is formed with a plurality of inclined whirl passages which impart turbulence and whirl to the liquid. The nozzle element has a central, axial discharge passage which communicates with the whirl passages via a peripheral ring duct and a plurality of radial ducts formed on the upstream face of the nozzle member. An acceleration disc is fitted in the recess, on the upstream side of the whirl body. It is formed with a convergent central passage, a peripheral ring duct, and connecting radial ducts, providing for an accelerated flow of fluid to the several whirl ducts. A pressure-deformable regulation bell is placed against the upstream face of the acceleration disc.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: November 6, 1990
    Assignee: Duna Elelmiszer es Vegyiaru Kereskedelmi Vallalat
    Inventor: Viktor Pamper
  • Patent number: 4909439
    Abstract: This invention relates to a mini type fuel injector and in particular to one including a stator provided at the outer surface with a flange dividing the stator into a first portion and a second portion, an adjusting pipe slidably disposed within the hole of the second portion of the stator, a bobbin mounted on the second portion of the stator with its one end bearing against the flange and its the other end extending out of the second portion and wrapped with insulated wires to form a coil, a housing having an inner reduced neck supporting a lower end of the coil and joined together with the stator by rivetting, a socket arranged in the flange of the stator, an armature received between the stator, the bobbin and the housing, a valve body having a flange for connecting the housing by rivetting and a compression spring with two ends thereof urging against the adjusting pipe and the armature, whereby the construction is simplified and the magnetic flux path is reduced thereby speeding up the dynamic response, d
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: March 20, 1990
    Assignee: Industrial Technology Research Institute
    Inventor: Shih-Lien Fu
  • Patent number: 4753390
    Abstract: This invention relates to a method and apparatus for the conversion of a liquid into a mist and spray without the use of a compressor. The Atomizer can be adapted to accommodate several different liquids and can alternate from one to another, as desired.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: June 28, 1988
    Assignee: Henderson and Sons, Inc.
    Inventor: Claudius L. Henderson
  • Patent number: 4721253
    Abstract: An intermittent type swirl injection nozzle providing substantially improved spray characteristics while being easy to manufacture and install. The nozzle includes a nozzle body and a needle valve slidably disposed in a guide hole of the nozzle body with a spray hole communicating a body seat formed inside the nozzle body and the forward end of the needle valve. A swirl passage is provided around the needle valve for giving a swirl flow influence around the axis of the needle valve to fuel when the needle valve is lifted from the body seat. A straight passage is provided in a portion where the inner wall of the guide hole and the needle valve make sliding contact for giving the fuel a straight flow influence in the axial direction of the needle valve. The two flows are joined prior to passing through the spray hole.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: January 26, 1988
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Masaaki Noguchi, Masaharu Sumiyoshi, Yujiro Oshima, Masatoshi Yamada
  • Patent number: 4687066
    Abstract: A drill bit having a nozzle for drilling fluid to pass out of the drill bit and into the bore hole is disclosed. In one embodiment two diagonal passages through the nozzle impart angular momentum to the drilling fluid. In another embodiment, four diagonal passages through the nozzle impart angular momentum. In still another embodiment, a central bore hole through the nozzle has helical grooves along its internal orifice wall to impart angular momentum. The angular momentum causes the drilling fluid exiting from the interior of the drill bit to flow downward into the bore hole in a divergent vortex that sweeps the cuttings away from the cutting surfaces of the drill bit.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: August 18, 1987
    Assignee: Varel Manufacturing Company
    Inventor: Robert F. Evans
  • Patent number: 4650121
    Abstract: An injection nozzle has an insert with helical swirl channels functioning as a single-jet nozzle for air-compression fuel-injection internal combustion engines, with a nozzle needle opening inwards. To achieve fuel atomization constant in terms of engine speed and load in all the operating ranges of the internal combustion engine and having a relatively invariable mushroom-like atomization form on the nozzle outlet side, the nozzle needle can be moved free of stops in the opening direction over the entire operating range, counter to the force of a spring, as a function of the fuel pressure prevailing in the pressure space, in such a way that when there is an equilibrium between the spring force and the force exerted on the needle in the pressure space, an almost always equal pressure ratio independent of the engine speed and arising in the valve-seat region is established, together with a constant outflow speed free to the combustion space.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: March 17, 1987
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventor: Ulrich Augustin