Coil Surrounds Valve Port Or Flow Line Patents (Class 251/129.21)
  • Publication number: 20110180147
    Abstract: An apparatus for controlling fluid flow including a solenoid valve. The solenoid valve includes a valve body located outside an instrumentation enclosure, wherein the valve body includes at least one connection port for controlling fluid flow and a valve plunger housing located within the instrumentation enclosure, wherein a solenoid coil is wound around the valve plunger housing portion. The apparatus also includes an instrumentation enclosure wall including an aperture through which the valve plunger housing is inserted into the instrumentation enclosure.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 28, 2011
    Applicant: THERMO FISHER SCIENTIFIC INC.
    Inventor: Graham David Josland
  • Patent number: 7942381
    Abstract: A solenoid valve includes a movable core, a magnetic opposed portion opposed to the movable core, a nonmagnetic cylindrical portion, a first magnetic cylindrical portion axially close to the movable core, and a second magnetic cylindrical portion located radially outside of the magnetic opposed portion. The nonmagnetic cylindrical portion surrounds radially outside of a gap between the magnetic opposed portion and the movable core. A coil is provided radially outside of the nonmagnetic cylindrical portion. A thickness t of the nonmagnetic cylindrical portion, a cross-sectional area S1 of the magnetic opposed portion, and a total cross-sectional area S2 of both the magnetic opposed portion and the second magnetic cylindrical portion having the thickness t satisfy the relationships of t?0.6 mm and 0.55?(S1/S2).
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: May 17, 2011
    Assignee: Denso Corporation
    Inventors: Kouichi Sugiyama, Kazunari Kuroiwa
  • Patent number: 7938340
    Abstract: A spraying device for spraying fragrance, pest control composition and/or a sanitizing composition held within a pressurized container, the spraying device comprising a container receiving section (13) and a switching section (10) wherein the switching section (10) incorporates a solenoid switch.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: May 10, 2011
    Assignee: Reckitt Benckiser (UK) Limited
    Inventors: James Anderson, Wu Jin, Simon Woolley, Ivan Ye
  • Patent number: 7896018
    Abstract: The invention is directed to a dose control apparatus. The apparatus has two armatures pressed against a valve seat by at least one spring. A coil induces a magnetic field that motivates the armatures against the force of the spring, thereby opening the valve. The armatures may move along a common axis in opposite directions. The apparatus may also include a core located between the armatures and a casing about the coil. The core and casing act to guide the magnetic field, reducing the power requirements for creating the field. Current may be periodically reversed in the coil to provide a degaussing field. In addition, a signal may be produced by the coil in the presence an externally applied magnetic field such as an MRI. An opposing magnetic field may be produced by the coil or the current provided to the coil may be adjusted.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: March 1, 2011
    Assignee: Advanced Neuromodulation Systems, Inc.
    Inventor: John H. Erickson
  • Patent number: 7854400
    Abstract: A fuel injector for an internal combustion engine includes a solenoid coil which is actuable by an electrical line, a valve sleeve which forms an outer coat of the fuel injector in a discharge-side region, and a valve housing. The fuel injector further includes a plastic sleeve, which houses the solenoid coil and the electrical line. The plastic sleeve is slid over the valve sleeve in assembly. The plastic sleeve has two parts interconnected by a crosspiece, with a recess formed in a radial region adjacent to the region of the crosspiece.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: December 21, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Hubert Stier
  • Patent number: 7837071
    Abstract: A valve device of an application device for applying fluid to a substrate comprises a valve body, a valve housing with inner chamber and valve seat, a supply fluid chamber, an electromagnetic valve actuating device with valve piston and an adjusting piston. The valve nozzle is detachably mounted on the nozzle side of the valve device. The valve device has a nozzle plate which closes the valve body at the bottom on the nozzle side, with mounting opening for the valve piston. The valve housing is designed in the form of a nozzle orifice which is a closure member that can be fitted on the mounting opening from below and removed. The valve nozzle forms part of the valve housing. The valve piston is exposed through the mounting opening of the nozzle plate for removal and fitting when the closure member is removed. The valve device is provided with at least one rectilinear fluid duct that connects the supply fluid chamber to the valve seat.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: November 23, 2010
    Assignee: J. Zimmer Maschinenbau Gesellschaft m.b.H.
    Inventor: Johann Achrainer
  • Patent number: 7819380
    Abstract: A solenoid apparatus includes a fixed core, a coil, and a movable core. The coil generates magnetic attractive force when the coil is supplied with electricity. The movable core is attracted to the fixed core by the magnetic attractive force generated between the fixed core and the movable core when the coil is supplied with electricity. The fixed core has a fixed axial end on a side of the movable core. The movable core has a movable axial end on a side of the fixed core. At least one of the fixed axial end and the movable axial end has at least one recession. The at least one of the fixed axial end and the movable axial end, which has the at least one recession, has an outer circumferential periphery and an inner circumferential periphery. The outer circumferential periphery radially communicates with the inner circumferential periphery through the at least one recession.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: October 26, 2010
    Assignee: Denso Corporation
    Inventors: Koichi Sugiyama, Shinsuke Yamamoto, Takayuki Hokao
  • Patent number: 7774126
    Abstract: An electromagnetic fuel injection valve device for an internal combustion engine is configured to carry out an energization to an electromagnetic coil of an injection valve actuator for a valve opening motion and additionally carry out a mid-term energization at a time interval between both an energization for valve opening of a previous fuel injection and an energization for valve opening of a subsequent fuel injection. A current of the mid-term energization is smaller than a current of the energization for valve opening motion and has the same direction as a direction of the current of the energization for valve opening motion.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: August 10, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Motoyuki Abe, Masahiko Hayatani, Tohru Ishikawa, Takehiko Kowatari, Noriyuki Maekawa
  • Patent number: 7717400
    Abstract: A body 20 has body wall surfaces 21, 22 defining a body space inside. A core 30 is disposed within the body 20. The core 30 has a core wall surface defining a core space inside which has a bottom having an opening 33a. A valve 50 is inserted through the opening 33a of the core 30 with a clearance and can move along the core wall surface of the core 30. The valve 50 has a hole with a bottom which is comprised of holes 52a, 53a, 57a, a contact surface 58 that contacts the core wall surface of the core 30, a valve head 59 that can contact a valve seat 40, at least one first communication hole 55 that provides communication between the hole 53a and a second inflow fuel passage 30a within the core space, and at least one second communication hole 54 that provides communication between the hole 52a and the first inflow fuel passage 21a, 22a within the body space.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: May 18, 2010
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Yoji Tsuduki, Hikaru Kikuta, Takuya Ito, Hiroshi Oda, Yasunori Takaku
  • Patent number: 7712686
    Abstract: A fuel injection valve includes a valve member for regulating a flow of a fuel to a nozzle hole, a movable core axially slidable in an integrated body with the valve member, a fixed core being faced by an end of the movable core, and a coil portion having an increasing number of winding of a winding wire toward the movable core in a bobbin to have a magnetic attractive force between the movable core and the fixed core upon application of an electric current. The number of winding wire increases toward an end on a movable core side in the coil portion. Therefore, the generated magnetic field increases on the movable core side. In this manner, the magnetic attractive force between the fixed core and the movable core is increased without increasing a cross-section and/or a body of the movable core.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: May 11, 2010
    Assignee: Denso Corporation
    Inventor: Shinsuke Yamamoto
  • Patent number: 7703740
    Abstract: A clog resistant, pilot operated pilot valve having two fluid paths, one path for fluid flow from the valve input to the valve output, and the second path for fluid flow through input and output pilot apertures. The opening and closing of the pilot apertures controls the flow of fluid between the input and output of the pilot valve. A clog resistant pilot operated valve in which fluid flows through the pilot fluid path only during the time of transition from an valve open to a valve closed condition, or vice-versa, thereby reducing the probability of failure due to contaminants blacking the pilot activation path. A clog resistant pilot operated valve in which the plunger, used to open and close the pilot fluid paths, is ribbed in construction to reduce the probability that contaminants will cause seizure of the plunger movement.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 27, 2010
    Inventor: Robert C. Franklin
  • Patent number: 7703709
    Abstract: An electromagnetic fuel injection valve in which a first resin-molded layer that is made of a synthetic resin, covers a solenoid section, and forms a coupler main portion that defines a coupler is covered by a second resin-molded layer different from that of the first resin-molded layer so that an outer face of the coupler main portion is exposed from a middle part up to the extremity of the coupler main portion. An endless engagement groove is provided on the outer periphery of the middle pad of the coupler main portion of the first resin-molded layer, the second resin-molded layer engaging with the endless engagement groove. An extending portion extending further outward than the engagement groove is formed in the second resin-molded layer so that the extending portion makes contact with an outer face of the coupler main portion when in a non-engaged state and covers the coupler main portion.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: April 27, 2010
    Assignee: Keihin Corporation
    Inventors: Akira Akabane, Hirokazu Tanuma
  • Publication number: 20100090144
    Abstract: A high-speed actuator to move a valve stopper to a closed position against a valve seat and an open position away from the valve seat is disclosed. The actuator includes a rod carrying first and second axially spaced solenoid armatures. The rod also has a valve stopper connector end. A first solenoid coil surrounds and is spaced from the rod to bias the first solenoid armature along with the rod and valve stopper toward the valve's open position. A second solenoid surrounds and is spaced from the rod. The second solenoid is axially spaced from the first solenoid to bias the first armature towards the valve's closed position. A linear variable differential transformer (LVDT) magnetically coupled to the second solenoid armature is included to determine the instantaneous position of the valve stopper relative to the valve's seat. The LVDT is responsive to the position of the second armature. The LVDT generates an instantaneous valve position signal in concert with the movements of the rod.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Inventor: Robert O. Brandt, JR.
  • Patent number: 7681863
    Abstract: An electromagnetic valve assembly for controlling the flow of a fluid in a sprinkler system. The electromagnetic valve includes a valve core including a plurality of orifices for a passage of fluid therethrough; a directional housing enclosing the valve core and enabling a controllable, lateral movement of the valve core from a closed position to an open position; a plurality of seals positioned within the directional housing to prevent leakage of the fluid; and a plurality of magnet cores attached adjacent to the directional housing, each magnet core including a wire winding for generating an electromagnetic field when actuated by means of an electrical current. When the generated electromagnetic field is applied to a first magnet core, the valve core slides laterally into the first magnet core to an open position enabling the flow of water through the orifices and an opening of the directional housing.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: March 23, 2010
    Inventor: Dana Soderlind
  • Patent number: 7673847
    Abstract: A movable valve 131 is movably supported by a support plate 135 within a valve body having a gas injection nozzle 129. The valve body consists of a plurality of members 103, 105, 107, 109, 127. Impermeable joints 147a, 147b, 147c are formed between the members. The support plate 135 includes a plurality of elastically deformable support portions each having an inner radial connection, an outer radial connection and a circumferential connection. The support portions are phase adjusted to radial fluid passages 131h formed in the movable valve 113.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: March 9, 2010
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Shigehito Suzuki, Daisuke Yamamoto, Masakazu Hasegawa
  • Patent number: 7614604
    Abstract: In an electromagnetic fuel injection valve in which a valve assembly formed by integrally connecting a valve element and a movable core to each other is contained in a valve housing, and a first journal part and a second journal part are provided in the valve assembly so as to be supported slidably in the guide hole in a valve housing, the outside surface of the first journal part (21) is formed by a sliding surface (45) slidable on the inside surface of the guide hole (14) and a pair of tapered tilt surfaces (46, 47) connecting to both the front and rear sides of the sliding surface (45); at least the tilt surface (47) on the movable core side, of both the tilt surfaces (46, 47), is formed of a first tilt surface part (47a) connecting to an end part of the sliding surface (45) and a second tilt surface part (47b) connecting to the first tilt surface part (47a); and an angle that the first tilt surface part (47a) makes with a plane perpendicular to the axis line of a valve shaft part (19b) is set larger than
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: November 10, 2009
    Assignee: Keihin Corporation
    Inventors: Akira Akabane, Kenichi Sato
  • Publication number: 20090242815
    Abstract: A solenoid valve includes a bobbin, a coil, a rod, and at least one ball. The bobbin has a through hole and a multiple-turning-point groove in the inner wall of the bobbin. The coil winds around the bobbin. The rod is disposed in the through hole and is capable of moving inward or outward along the through hole, and has a recess in the outer wall of the rod. Each ball is received in the groove and the recess at the same time.
    Type: Application
    Filed: October 14, 2008
    Publication date: October 1, 2009
    Inventors: Chieh-Cheng CHEN, Ming-Chih TSAI, Chien-Chia LIN
  • Patent number: 7588046
    Abstract: The invention is directed to a dose control apparatus. The apparatus has two armatures pressed against a valve seat by at least one spring. A coil induces a magnetic field that motivates the armatures against the force of the spring, thereby opening the valve. The armatures may move along a common axis in opposite directions. The apparatus may also include a core located between the armatures and a casing about the coil. The core and casing act to guide the magnetic field, reducing the power requirements for creating the field. Current may be periodically reversed in the coil to provide a degaussing field. In addition, a signal may be produced by the coil in the presence an externally applied magnetic field such as an MRI. An opposing magnetic field may be produced by the coil or the current provided to the coil may be adjusted.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: September 15, 2009
    Assignee: Advanced Neuromodulation Systems, Inc.
    Inventor: John H. Erickson
  • Patent number: 7581711
    Abstract: An electromagnetic fuel injection valve having a cylindrical magnetic body, the front end of a cylindrical non-magnetic body surrounding a part of a movable core coaxially connected to a valve body is connected coaxially to the rear end of the cylindrical magnetic body, and a fixed core is fitted into and fixed to a rear portion of the cylindrical non-magnetic body, wherein the movable core includes a tubular sliding portion having an outer peripheral face that is in sliding contact with an inner peripheral face of a rear portion of the cylindrical magnetic body, a rear tubular opposing portion, and a front tubular opposing portion, and when the diameter of the rear tubular opposing portion is D1, the diameter of the front tubular opposing portion is D2, and the diameter of the tubular sliding portion is D3, they are set so that D1<D2<D3.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: September 1, 2009
    Assignee: Keihin Corporation
    Inventor: Akira Akabane
  • Publication number: 20090200405
    Abstract: A coil is provided radially outside a housing. Each of a stator and a moving core is formed from a magnetic material and substantially in a tubular shape. The stator and the moving core are located radially inside the housing and opposed to each other in an axial direction. The moving core is configured to move toward the stator when being drawn by magnetic attractive force caused between the moving core and the stator in response to energization of the coil. A valve element is movable together with the moving core in the axial direction and configured to open and close a nozzle hole for controlling fuel injection. The moving core and the valve element are separate components. The moving core has an inner periphery defining a through hole in which the valve element is slidable in the axial direction. The inner circumferential periphery has a surface-hardened layer.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 13, 2009
    Applicant: DENSO CORPORATION
    Inventors: Kiyotaka Yoshimaru, Moriyasu Gotoh, Shinkichi Obayashi
  • Patent number: 7571868
    Abstract: A fuel injection valve has a connection piece for a fuel-supply line, a valve-seat support having a valve-seat body provided with a valve opening, a solenoid for activating a valve member, which controls the valve opening, and a plastic extrusion coat enclosing the connection piece, the solenoid and the valve-seat support. To achieve a cost-effective manufacture by requiring fewer components for the injection valve and providing a reduction in the assembly costs, the connection piece and the valve-seat support are made of plastic and designed as one-piece plastic housing together with the plastic extrusion coat. The yoke element for closing the magnetic circuit of the solenoid, which extends across the magnetic core and magnetic armature, is a magnetic material extrusion coat, which encloses the solenoid coil and adjoins the magnetic core in a gapless manner and ends in front of the magnetic armature with a gap clearance.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: August 11, 2009
    Assignee: Robert Bosch GmbH
    Inventor: Johann Bayer
  • Patent number: 7559526
    Abstract: A fuel injection valve comprises: a solenoid unit including a core, an armature and a coil; and a valve unit including a valve element connected to the armature to travel therewith, and a valve seat that regulates a movement in valve closing direction of the valve element, and is open and closed by the valve element separating from or coming in contact with the valve seat, and a stopper for regulating a movement in valve opening direction of the valve element, said valve unit being connected to the solenoid unit. There is provided a cavity that communicates with a gap formed between the core and the armature in opposition, and the cavity forms a resonator for suppressing bounce of the valve element. In spite of the simple structure, it is possible to effectively suppress bounce of the valve element that takes place at the time of valve opening/closing.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: July 14, 2009
    Assignee: Mitsubishi Electric Corp.
    Inventors: Kazunori Kitagawa, Yoshihiko Onishi
  • Patent number: 7556062
    Abstract: A solenoid valve and method has a simplified structure that integrates the fluid metering functions of the spool in the armature, thereby eliminating the need for a separate spool, bearings, and pin in the valve. The armature has a aperture that communicates with at least one port in a valve body. The position of the differential in the armature with respect to the ports in the valve body controls the pressure of fluid exiting the outputs of the valve body. In one embodiment, the same overall valve structure can be modified to form both inversely proportional valves and directly proportional valves. By integrating the fluid metering functions of the spool into a single ported armature, the inventive valve assembly reduces the number of parts in the valve, simplifying construction.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: July 7, 2009
    Assignee: Eaton Corporation
    Inventors: William John Arnold, Robert Andrew Dayton
  • Publication number: 20090108107
    Abstract: When a fuel injection valve is mounted on an engine, a distance between a core and an armature during non-energization of a coil can be prevented from becoming narrow. The coil is arranged inside the core, and a body is fixedly secured at its one end to an end of the core. A housing is arranged outside the coil with its one end abutting a cylinder head. A cap is arranged at the other end of the housing, and abuts at its side opposite to the housing with a fastening unit. The armature is arranged for reciprocation inside the body, and is magnetically attracted to the magnetized core. A gap is formed between the housing and the body, with the cap and the core being fixed to each other, and upon mounting the valve on the engine, the housing and the fastening unit abut the cylinder head and the cap, respectively.
    Type: Application
    Filed: April 29, 2008
    Publication date: April 30, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori KITAGAWA, Kouichi OJIMA, Yoshihiko ONISHI
  • Patent number: 7520449
    Abstract: In an electromagnetic fuel injection valve in which a coil assembly is housed within a solenoid housing, an inlet tube is provided coaxially and integrally so as to be connected to the rear end of a fixed core, and the solenoid housing and at least a front part of the inlet tube are covered by a synthetic resin covering section having an integral power-receiving coupler, the resin-molded section (7) includes a first resin-molded layer (41) and a second resin-molded layer (42), the first resin-molded layer (41) being formed from a glass fiber-incorporated synthetic resin while forming a coupler main portion (40a) that defines a framework part of the power-receiving coupler (40), and the second resin-molded layer (42) being formed from a synthetic resin into which glass fiber is not incorporated so as to cover the first resin-molded layer (41), and in a section of the inlet tube (32) on the fixed core (23) side, when the thickness of the first resin-molded layer (41) is t1, the thickness of the second resin-mol
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: April 21, 2009
    Assignee: Keihin Corporation
    Inventors: Daisuke Matsuo, Tomoyuki Omura, Eisaku Sakata
  • Patent number: 7513445
    Abstract: The metering servo valve comprises a valve body, an open/close element, and an electromagnet, and is housed in a shell of the injector. The electromagnet actuates a mobile armature for a travel defined by an arrest element, carried by the electromagnet, which is housed in a casing, fixed in the shell by means of a threaded ring nut. Said ring nut is screwed with a pre-set tightening torque on a thread of the shell. The casing has a resting surface designed to engage a shoulder of the shell. The surface is carried by an area of the casing designed to undergo deformation as a function of the tightening torque of the ring nut so as to enable fine adjustment of the travel of the armature.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: April 7, 2009
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele, Chiara Altamura, Antonio Gravina, Carlo Mazzarella
  • Publication number: 20090078901
    Abstract: An electromagnetic safety valve that includes a reel, a support that has a first segment that is inserted in the interior of the reel and which acts as a fixed core, a movable core that moves in the interior of the reel, a sealing member connected to one end of the movable core that opens a passage of gas overcoming the opposition of a spring when the valve is energised, and a casing that encloses the reel. The support has a second segment that includes a base upon which the reel is supported, the base including axial through holes for the respective passage of a phase wire and a mass wire. The second segment also includes a coaxial housing wherein a male terminal is inserted.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 26, 2009
    Applicant: MONDRAGON COMPONENTES, S. COOP
    Inventors: Jose Antonio Guirado Tristan, Marcos Pablo Curto, Jose Maria Lasa Elexpuru
  • Patent number: 7497391
    Abstract: A fuel injector for fuel-injection systems of internal combustion engines includes a valve-closure element cooperating with a valve seat, and a restoring spring which is situated in a spring pocket opening and acts upon the valve-closure element by a restoring force in the direction of the valve seat. The restoring spring has at least one holding coil in a region of the inflow side, whose area of cross section is positioned perpendicular to an area of cross section of the restoring spring.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: March 3, 2009
    Assignee: Robert Bosch GmbH
    Inventor: Ferdinand Reiter
  • Patent number: 7458531
    Abstract: A fuel injection valve includes a valve body having a valve seat, a valve element adapted to sit on and leave a valve seat, a nozzle hole for the injection of fuel, and an electromagnetic drive section. A holding member surrounds and holds, on one end side thereof, at least a partial area of an opposite-to-nozzle-hole-side end face portion of the valve element. The holding member surrounds and holds, on an opposite end side thereof, a predetermined surface area of a constant position holding portion without being influenced by the pressure of fuel flowing through a fuel passage of the valve body and irrespective of movement of the valve element. An internal area of the holding member is shut off so as not to be influenced by the pressure of fuel present around the internal area.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: December 2, 2008
    Assignee: Denso Corporation
    Inventors: Kouichi Mochizuki, Kimitaka Saito, Hiroaki Nagatomo
  • Publication number: 20080245427
    Abstract: A valve assembly includes a solenoid can having an internal coil. A valve body connected to the solenoid can includes an inlet port and a first valve seat. An axially adjustable retainer threadably connected to the valve body includes an end portion defining a second valve seat. A homogenous valve member/armature slidably disposed in the valve body moves in the presence of a coil generated magnetic flux between valve closed and valve open positions. A valve member/armature first surface area is in fluid communication with a pressurized fluid through the inlet port. A valve member/armature second surface area is in fluid communication with the pressurized fluid in the valve closed position. The first surface area is equal to the second surface area and the pressurized fluid acts equally on the first and second surface areas defining a pressure balanced condition in the valve closed position.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 9, 2008
    Inventors: Kevin C. Williams, Robert H. Neff, Jeffrey Simmonds
  • Publication number: 20080237520
    Abstract: A solenoid valve includes a movable core, a magnetic opposed portion opposed to the movable core, a nonmagnetic cylindrical portion, a first magnetic cylindrical portion axially close to the movable core, and a second magnetic cylindrical portion located radially outside of the magnetic opposed portion. The nonmagnetic cylindrical portion surrounds radially outside of a gap between the magnetic opposed portion and the movable core. A coil is provided radially outside of the nonmagnetic cylindrical portion. A thickness t of the nonmagnetic cylindrical portion, a cross-sectional area S1 of the magnetic opposed portion, and a total cross-sectional area S2 of both the magnetic opposed portion and the second magnetic cylindrical portion having the thickness t satisfy the relationships of t?0.6 mm and 0.55?(S1/S2).
    Type: Application
    Filed: March 21, 2008
    Publication date: October 2, 2008
    Applicant: DENSO CORPORATION
    Inventors: Kouichi SUGIYAMA, Kazunari KUROIWA
  • Patent number: 7429006
    Abstract: A fuel injector and various methods relating to the assembly of the fuel injector. The fuel injector includes a power group subassembly and a valve group subassembly having a respectively connected first and second connector portions. The power group subassembly includes an electromagnetic coil, a housing, at least one terminal, and at least one overmold formed over the coil and housing. The valve group subassembly insertable within the overmold includes a tube assembly having an inlet tube and a filter assembly. A pole piece couples the inlet tube to one end of a non-magnetic shell having a valve body coupled to the opposite end. An axially displaceable armature assembly confronts the pole piece and is adjustably biased by a member and adjusting tube toward engagement with a seat assembly. A lift setting device sets the axial displacement of the armature assembly. The seat assembly includes a flow portion and a securement portion having respective first and second axial lengths at least equal to one another.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: September 30, 2008
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Michael Dallmeyer
  • Publication number: 20080217437
    Abstract: Methods and systems for efficiently driving, diagnosing and configuring an electric spray gun system use a pulse width modulated driving signal to achieve fast gun opening and closing times while minimizing the power consumption of the gun. Additionally, an example method and system for detecting the opening and closing of an electric spray gun is provided. Finally a method for determining parameters such as an electric spray gun's on current, off current and holding current is provided. Through use of the methods and systems provided herein, a technician can easily and effectively configure an electric spray gun for efficient use in a spraying system.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Applicant: Spraying Systems Co.
    Inventors: Jan Vanden Berghe, Hans Saelens
  • Publication number: 20080210897
    Abstract: A solenoid valve may include a housing, a solenoid coil, and a plunger. The solenoid coil may be disposed about an external portion of the housing and the plunger may be slidably disposed within the housing. The plunger may include a recess in a first end thereof having a seal assembly located and retained therein through a mechanical engagement therewith.
    Type: Application
    Filed: March 3, 2007
    Publication date: September 4, 2008
    Applicant: Freudenberg-NOK General Partnership
    Inventor: John B. Wagner
  • Patent number: 7407119
    Abstract: A fuel injector for an internal combustion engine including a body, a stator member, an armature, an electromagnetic coil, and a diamagnetic member. The body includes a passage extending along a longitudinal axis between inlet and outlet ends. The armature member is movable with respect to the stator member between a first configuration and a second configuration, and includes a closure member proximate the outlet end and contiguous to a seat in the first configuration, and spaced from the seat in the second configuration. The electromagnetic coil surrounds the passage, is disposed in a housing, and is energizable to provide magnetic flux that moves the armature between the first and second configuration to permit fuel flow through the passage. The diamagnetic member is proximate the electromagnetic coil so that when the electromagnetic coil is energized the magnetic flux flows around the diamagnetic member.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: August 5, 2008
    Assignee: Continental Automotive Systems US, Inc.
    Inventor: Perry R. Czimmek
  • Publication number: 20080179556
    Abstract: Auxiliary electromagnetic valve for its incorporation into a main valve of a gas servo valve, which comprises a body with an auxiliary outlet conduit connected to an outlet conduit of the servo valve, a pivoting arm that comprises a closure member of a valve seat of the auxiliary outlet conduit, a ferromagnetic armature that closes the magnetic circuit opening the valve seat, and a return means, supported by a plate, that returns the pivoting arm in order to keep the seating closed. The body is configured by means of a peripheral surface fitted to a cavity of the main valve, a lower surface supported against the cavity by means of fitting means, an intermediate transverse surface on which the valve seat is fitted, a transverse perimetral rim upon which the plate is fixed, and an auxiliary hole that connects the valve seat to the outlet conduit.
    Type: Application
    Filed: January 14, 2008
    Publication date: July 31, 2008
    Inventors: Jose Maria Lasa, Mikel Arizmendi, Marcos Pablo
  • Patent number: 7309033
    Abstract: A fuel injector and various methods relating to the assembly of the fuel injector. The fuel injector includes a power group subassembly and a valve group subassembly having a respectively connected first and second connector portions. The power group subassembly includes an electromagnetic coil, a housing, at least one terminal, and at least one overmold formed over the coil and housing. The valve group subassembly insertable within the overmold includes a tube assembly having an inlet tube and a filter assembly. A pole piece couples the inlet tube to one end of a non-magnetic shell having a valve body coupled to the opposite end. An axially displaceable armature assembly confronts the pole piece and is adjustably biased by a member engaged with an adjusting tube with a filter assembly mounted thereon. The seat assembly includes a flow portion and a securement portion having respective first and second axial lengths at least equal to one another.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: December 18, 2007
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Michael Dallmeyer
  • Patent number: 7296781
    Abstract: An electromagnetic fuel injection valve includes a coil assembly housed in a solenoid housing having a cylindrical magnetic metal coil case which integrally has, at one end side, a ring-shaped end wall portion and a press-fit cylindrical portion integrally connected to an inner periphery of the end wall portion so that the magnetic cylindrical body is press-fitted to the press-fit cylindrical portion and the press-fit cylindrical portion is welded to the magnetic cylindrical body, and a flange portion which is provided at a rear end of a fixed core. Wherein at least the solenoid housing is covered with a resin molded part and integrally has a power receiving coupler, the coil case being formed by a burring process to a central portion of a closed end of a bottomed cylindrical material having a circular opening with a smaller diameter than an outer diameter of the press-fit cylindrical portion.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: November 20, 2007
    Assignee: Keihin Corporation
    Inventor: Akira Akabane
  • Patent number: 7293757
    Abstract: An electromagnetic fuel injection valve has a rear end of a magnetic body coaxially connected to a front portion of a fixed core via a non-magnetic body. A coil assembly surrounds a rear portion of the magnetic body and the fixed core. A bobbin includes a cylindrical portion; a pair of flanges protruding radially outward from opposite ends of the cylindrical portion; and a terminal boss portion protruding sideways from one of the flanges disposed at a side opposite from the magnetic body and to which a pair of power-receiving-side connecting terminals are fixed. Engagement recesses are recessed inward on opposite sides of the terminal boss portion connected to the one flange wherein intermediate portions of a pair of coil ends extending from opposite ends of a coil pass through and engage the engagement recesses and are electrodeposited to a pair of electrodeposition portions provided with the connecting terminals.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: November 13, 2007
    Assignee: Keihin Corporation
    Inventor: Akira Akabane
  • Publication number: 20070252100
    Abstract: A fuel injection valve comprises: a solenoid unit including a core, an armature and a coil; and a valve unit including a valve element connected to the armature to travel therewith, and a valve seat that regulates a movement in valve closing direction of the valve element, and is open and closed by the valve element separating from or coming in contact and a stopper for regulating a movement in valve opening direction of the valve element; and that is connected to the solenoid unit; and in which there is provided a cavity that communicates with a gap formed between the core and the armature in opposition, and the cavity forms a resonator for suppressing bounce of the valve element. In spite of the simple structure, it is possible to effectively suppress bounce of the valve element that takes place at the time of valve opening/closing.
    Type: Application
    Filed: July 27, 2006
    Publication date: November 1, 2007
    Inventors: Kazunori Kitagawa, Yoshihiko Onishi
  • Patent number: 7278594
    Abstract: A fuel injector 10 may comprise a valve body 14 having a fuel path, a valve seat 23 fixed to a downstream end of the valve body, and a valve 25 that opens and closes a fuel injection hole of the valve seat 23. The valve may be housed within the valve body in a manner allowing sliding. An armature 31 may be attached to an upstream end of the valve 25, and a valve closing element 32 may be attached to a downstream end of the valve 25. A core 21 may be disposed at an upstream side of the armature 31. A downstream end surface of the core 21 faces an upstream end surface of the armature 31. When the valve 25 opens the fuel injection hole, the downstream end surface of the core 21 makes contact with the upstream end surface of the armature 31. A non-magnetic ring 20 may be disposed at an outer circumference side of the armature 31 and the core 21.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: October 9, 2007
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kazuaki Koyanagi, Hiroshi Kawazoe
  • Patent number: 7278447
    Abstract: An actuator assembly comprised of: a first coil and a second coil, each with a bore and a producing a magnetic flux when subject to an electric signal; a tube extending through the bores such that coils are coaxial; a magnetic pole piece within the tube and generally between the first bore and the second bore; a magnetic ring set outside of the tube and between the coils, in which the magnetic flux paths both travel through the magnetic pole piece and the magnetic ring to complete their respective magnetic paths; and a first and second axially translatable movable member within the tube and wherein the movable members each axially translate towards the magnetic pole piece in the presence of the magnetic flux such that by controlling the electric signal, proportionality can be achieved.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: October 9, 2007
    Inventor: Viraraghavan S. Kumar
  • Patent number: 7264230
    Abstract: An engine carburetor and a solenoid valve assembly therefor and methods of assembling the same. The carburetor has a body with a fuel and air mixing passage communicating with an air bleed passage. A cavity extends into the body for communication with the air bleed passage. A solenoid housing is received in the cavity and maintains a coil body for receipt of a valve body therein. The valve body moves between a retracted position to substantially open the air bleed passage and an extended position to substantially close the air bleed passage.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: September 4, 2007
    Assignee: Walbro Engine Management, L.L.C.
    Inventors: Michael P. Burns, David L. Speirs
  • Patent number: 7255290
    Abstract: A very high speed injector permits injecting high pressure diesel oil directly into a diesel engine combustion chamber. The very high speed permits almost arbitrary rate shaping, minimizing formation of diesel particulate matter and oxides of nitrogen pollutants. An electrical waveform is pre-determined for a desired fuel injection rate shape. The electrical waveform is converted into a corresponding magnetic field waveform by a solenoid coil. A giant magnetostrictive material (GMM) transduces the magnetic field waveform into a corresponding mechanical waveform. The mechanical waveform positions a valve element to control flow rate. The very high speed features include a thin solenoid coil of relatively few turns, proportionally supplying up to one hundred amperes at up to one hundred volts in no greater than ten microseconds, the GMM is subject to a bias compressive stress magnitude of no less than fourteen megapascals, and the magnetic flux path is minimized and designed to suppress eddy currents.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 14, 2007
    Inventors: Charles B. Bright, Jon C. Garza
  • Patent number: 7229064
    Abstract: A valve for controlling a fluid, in particular for controlling a gas. The valve includes a valve housing having a housing sleeve and an electromagnetic actuator for an armature which is guided in an axially displaceable manner and which cooperates with a valve seat situated on a seating plate so that a fluid flow through outflow orifices in the seating plate is controllable. The armature is guided along an armature sleeve which is situated in the housing sleeve.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: June 12, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Frank Miller, Elmar Okrent
  • Patent number: 7219695
    Abstract: A shut-off valve that has particular application for opening and closing a compressed hydrogen storage tank. In one embodiment, the valve includes two valve sealing members where one side of one valve sealing member is on the high pressure side of the valve and an opposing side of the other valve sealing member is on the high pressure side of the valve. Therefore, the pressure applied to the two valve sealing members offset each other so that less force is required to open the valve against the high pressure. In another embodiment, one of the sealing members is replaced with a bellows.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: May 22, 2007
    Assignee: General Motors Corporation
    Inventor: Rainer Pechtold
  • Patent number: 7182311
    Abstract: A flow through solenoid valve comprises a housing, a coil encircling the housing, and a hollow plunger slidably positioned in the housing. The housing has an inlet, a seat, and an outlet. The hollow plunger has a fixed segment and a poppet segment. The poppet segment includes a poppet conduit and is slideable within the housing. The spring encircles the poppet segment and biases the poppet segment toward the seat. The solenoid valve is energized to disengage the poppet segment from the seat. When the poppet and the seat are disengaged, a gas is permitted to flow through the hollow plunger. The solenoid valve is de-energized to engage the poppet segment and the seat. When the poppet and the seat are engaged, the gas is prevented from flowing out of the outlet.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 27, 2007
    Assignee: Robertshaw Controls Company
    Inventor: James D. Kimble
  • Patent number: 7168681
    Abstract: A fuel injection valve includes a valve member, a movable core, a fixed core, and a coil. The valve member opens and closes a nozzle hole. The movable core reciprocates with the valve member in a substantially axial direction of the movable core. The fixed core is arranged on the side opposite to the nozzle hole with respect to the movable core. The fixed core opposes to the movable core. The coil generates magnetic force, which attracts the movable core toward the fixed core when the coil is energized. The coil includes a winding. The winding of the coil has an axial section, which is in a polygonal shape. The axial section of the winding is in a substantially oblong shape, in a substantially rectangular shape, or the like.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: January 30, 2007
    Assignee: Denso Corporation
    Inventor: Yoshinori Yamashita
  • Patent number: 7163162
    Abstract: A fuel-injection valve includes a fuel-injection hole, a valve element and a valve seat for opening and closing the fuel-injection hole, a force-applying member for applying force to the valve element in a direction of motion of the valve element, and a drive unit for applying force to the valve element in the direction opposite to that of the force applied by the force-applying member; wherein a secondary oscillation system, which interacts with a primary oscillation system including the valve element and the force-applying member, is added to the primary oscillation system, and the phase angle of force applied to the primary oscillation system by the secondary oscillation system is also staggered from that of force applied to the primary oscillation system, which is other than the force applied to the primary oscillation system by the secondary oscillation system, whereby the bouncing of the valve element during opening and closing of the valve is reduced, which in turn makes it possible to achieve very acc
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: January 16, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Tsuchiya, Tosuke Hirata, Yoshio Okamoto, Tohru Ishikawa, Noriyuki Maekawa, Yoshiyuki Tanabe, Atsushi Sekine, Yuzo Kadomukai, Makoto Yamakado, Motoyuki Abe
  • Patent number: 7128304
    Abstract: A control valve for a compressor with a discharge port, a chamber port, a side chamber port, an intake port, a feed hole between the discharge port and the chamber port, an extraction hole between the side chamber port and the intake port; a feed valve controls the feed hole; an extraction valve controls the extraction hole; and a solenoid is capable of actuating the feed and extraction valves. In a first status, a minimum flow rate is secured at the extraction valve with the feed valve being fully opened. In a second status, the feed valve is fully closed and the extraction valve is fully opened. In an intermediate status, the feed valve is moved from a nearly closed state to a fully closed state depending on the value of control current. At the extraction valve, a predetermined flow rate is effectuated irrespective of its opening degree.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 31, 2006
    Assignee: Fujikoki Corporation
    Inventors: Daisuke Morisawa, Toshikio Okii