With Means To Adjust Stroke Of Armature Patents (Class 251/129.18)
  • Patent number: 10719089
    Abstract: Apparatus and methods to characterize fluid valves are disclosed. An example apparatus includes a fluid valve having a valve seat and a flow control member to sealingly engage the valve seat. The apparatus includes a sensor to detect a change in position of the flow control member. The apparatus includes a processor to determine at least one of a seating point or a breakout point corresponding to the flow control member based on the change in position.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: July 21, 2020
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Thomas A. Imsland, Jeffrey Dean Seyller
  • Patent number: 9903328
    Abstract: A solenoid valve for controlling fluids includes a closing element that opens and closes at least one outlet opening on a valve seat, and a magnetic circuit that includes an armature, an internal pole, a magnetic return path, and a coil, the armature being connected to the closing element. The magnetic circuit includes a nonmagnetic separating element for interrupting the magnetic circuit and at least one magnetic crosspiece running in a direction of a longitudinal extension of the valve and situated on the nonmagnetic separating element.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 27, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Ralf Kromer, Michael Knorpp
  • Patent number: 9732874
    Abstract: A control valve according to an exemplary embodiment includes an interlocking mechanism that achieves a first operation and a second operation simultaneously or continuously. In the first operation, a sub-valve is opened by having an actuating rod displaced integrally with a sub-valve element in accordance with the magnitude of solenoidal force. In the second operation, a load, by which to bias a main valve element in a closing direction of a main valve, is increased by displacing the actuating rod relative to the main valve element.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 15, 2017
    Assignee: TGK CO., LTD.
    Inventors: Shinji Saeki, Yuuki Kaneko, Masaaki Tonegawa
  • Patent number: 9534589
    Abstract: Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 3, 2017
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Shinobu Oikawa, Hirokuni Tomita, Takehiko Kato
  • Patent number: 9470332
    Abstract: A stator is located in a coil. A movable body is attracted toward the stator when the stator is magnetized by the coil. A valve element is movable integrally with the movable body to open and close a fluid passage when the coil is activated and de-activated. A regulating member is opposed to the movable body to regulate movement of the movable body. An elastic member is equipped to one of the regulating member and the movable body and is elastically deformable between the movable body and the regulating member when the movable body is attracted toward the stator. The elastic member is located at a position shifted in a radial direction relative to the regulating member or the movable body. The elastic member is in an asymmetrical shape relative to an axial rotational direction.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 18, 2016
    Assignee: DENSO CORPORATION
    Inventor: Yuichiro Miura
  • Patent number: 9366354
    Abstract: A normally closed solenoid valve includes a valve element arranged to be seatable on and unseatable from a valve seat. A movable core is movable with the valve element. A first spring biases the valve element and the movable core toward the valve seat. A coil and a stator core generate an electromagnetic force resistive to a load of the first spring for the movable core. A second spring applies a load smaller than and resistive to the load of the first spring to the valve element and the movable core. The valve further includes a load adjusting mechanism for adjusting the load of the first spring, and a stroke adjusting mechanism for adjusting an unseating stroke of the valve element from the valve seat.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: June 14, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Nanahara, Yoshito Tanaka, Kei Sato
  • Patent number: 9193409
    Abstract: A saddle riding type vehicle includes a stabilizer arranged to support a pair of wheels arranged at opposite sides of a vehicle body to be movable up and down relative to the vehicle body, and a switching mechanism arranged to switch between a movable state in which the pair of wheels are permitted to move up and down and a locked state in which the pair of wheels are restricted from moving up and down. The switching mechanism includes a coupling pin member arranged to engage with the stabilizer to set the stabilizer to the locked state thereby restricting rotation of the stabilizer relative to the vehicle body, and to disengage from the stabilizer to set the stabilizer to the movable state thereby permitting rotation of the stabilizer relative to the vehicle body, and a solenoid fixed to the vehicle body and arranged to drive the coupling pin member into and out of engagement with the stabilizer.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: November 24, 2015
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Eiichirou Tsujii, Kazuhiro Nishida, Masayuki Hirano, Toshio Takeuchi
  • Patent number: 9074701
    Abstract: A solenoid valve is disclosed that includes at least one chamber which can be filled with a fluid and which is provided in a housing of the solenoid valve, a closing piston which can be displaced by an actuation device and a spring element which can act against the actuation device. An annular element which divides the chamber into a first and a second sub-chamber is provided, said annular element being at least partially, in particular completely engaged in the axial direction by a closing piston of the solenoid valve arranged in a guide opening of the annular element and comprises at least one fluid passage recess which is different from the guide opening.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: July 7, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Karl, Florian Richter, Oliver Holz, Nicolas Houis, Joerg Fricke-Schmidt, Andrej Gardt, Elmar Vier
  • Publication number: 20150090912
    Abstract: A pressure control valve includes a housing with a lower part and an upper part. The housing includes a coil wound on a coil carrier, an armature configured to be axially displaceable within a bearing, a core, a flux guiding device, a connection bore, and a connector comprising a valve seat for the armature. The connector and the connection bore are disposed in the lower part of the housing. The upper part of the housing is arranged in a force-locked or a form-fitting manner. A bearing bushing for the armature is provided in a portion of the connector directed towards the core. A stop bushing for the armature is provided in an opposite portion of the connector.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Inventors: WERNER BUSE, FRANZ-JOSEF SCHNELKER, ROLF DOHRMANN
  • Patent number: 8985551
    Abstract: A solenoid includes: a movable core configured to move in a first space of a main body case in an axial direction to apply a biasing force to a spool; a fixed magnetic pole portion configured to attract the movable core in the axial direction; an adjusting spring configured to apply the biasing force to the movable core; a biasing force adjusting member provided at an opening end portion of a rear case and configured to adjust an axial position thereof to adjust the biasing force; and a degassing plug provided at an opening end portion of the adjusting member and including a degassing passage that allows a second space to communicate with an outside by changing relative positions of the adjusting member and the degassing plug. A sealing portion configured to open or close communication between degassing passages is provided between the adjusting member and the degassing plug.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: March 24, 2015
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Masahiro Matsuo, Yuko Funakubo, Mitsuo Yoshimoto
  • Publication number: 20150041694
    Abstract: A normally closed solenoid valve (100) includes a housing (10), and a valve element (21), a movable core (22), a first spring (23), a second spring (24), a coil (25), a stator core (26), and other components, which are assembled to the housing (10). The valve element (21) is arranged so as to be seatable on and unseatable from a valve seat (12c). The movable core (22) is assembled to a cylinder section (11b) of the housing (10) so as to be movable integrally with the valve element (21) in an axial direction of the movable core (22). The first spring (23) is configured to bias the valve element (21) and the movable core (22) toward the valve seat (12c). The coil (25) and the stator core (26) are configured to generate an electromagnetic force resistive to a load of the first spring (23) for the movable core (22) through energization of the coil (25).
    Type: Application
    Filed: June 12, 2012
    Publication date: February 12, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Nanahara, Yoshito Tanaka, Kei Sato
  • Patent number: 8783653
    Abstract: A solenoid operated modular valve includes a solenoid body having a coil and a pole piece positioned in the solenoid body. A valve body cartridge is connected to the solenoid body. A polymeric snap-in seat assembly includes first and second deflectable claw arms each having a barb engaging the valve body cartridge retaining the snap-in seat assembly in direct contact with the valve body cartridge. A seat engagement face when contacted by a valve seal member defines a valve closed position, and is displaced away from the seat engagement face in a valve open position when the coil is energized. A valve body cartridge body end portion includes a barb engagement face having pitched contact edges each having a continuous pitch directly contacted by the barb of the first and second deflectable claw arms to rotatably and frictionally lock the snap-in seat assembly to the valve body cartridge.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 22, 2014
    Assignee: MAC Valves, Inc.
    Inventors: Michael Jamison, Jeffrey Simmonds, Kevin C. Williams
  • Patent number: 8671912
    Abstract: The invention relates to an injector, in particular, a common-rail injector for injection of fuel into a combustion chamber of an internal combustion engine. An injection valve element, adjustable between a closed position and an open position, is controllable by means of a control valve. The control valve has a control valve element, adjustable between a closed position and an open position by means of an actuator, which in the closed position is an at least almost pressure-equalized and has a sealing line which cooperates in a sealing manner with a control valve seat. The sealing line of the control valve element is lifted off the control valve seat in the open position and hence opens fuel flow from a high pressure region to a low pressure region of the injector. According to the invention, the control valve element has a support region extending over the sealing line in a radial direction to the high pressure region.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: March 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Nadja Eisenmenger, Hans-Christoph Magel
  • Patent number: 8667986
    Abstract: A pressure-regulating valve for regulating the pressure in a high-pressure fuel accumulator of an internal combustion engine, in particular in common-rail injection systems, with a valve piston (3) which is guided in an axially displaceable manner in a bore (1), is acted upon in the opening direction by the compressive force of a spring (2) and, when a magnet coil (4) is energized, undergoes an axial displacement in the direction of a first valve seat (5) counter to the compressive force of the spring (2) and counter to the pressure prevailing in the high-pressure fuel accumulator, wherein the valve piston acts on a valve-sealing element (6) which interacts with the valve seat (5).
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: March 11, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Brigitte Roth
  • Patent number: 8651453
    Abstract: The invention relates to a valve cartridge for a solenoid valve, having a capsule, a magnetic armature that is movably guided within the capsule, a valve insert that is inserted into the capsule at a first end, and a valve body, which is pressed into a second end of the valve insert and has a main valve seat. The magnetic armature, moved by a generated magnetic force, moves a tappet guided within the valve insert. The tappet has a closing element with a sealing element which plunges into the main valve seat of the valve body in a sealing manner for carrying out a sealing function, and an associated solenoid valve. According to the invention the valve insert is configured as a one-part slotted bushing, and the valve body is configured as a bonnet-shaped bushing. The valve body configured as a bushing is pressed into a second end of the valve insert configured as a slotted bushing such that the main valve seat is disposed within the valve insert.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: February 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Heyer, Reinhard Fink, Florian Richter, Jean-Guillaume Pic, Daniel Brenndoerfer, Volkmar Wetschorek, Harald Speer, Florian Rispler, Oliver Holz, Friedrich Mueller, Nicolas Houis, Anton Fritz, Alice Schacherl, Franz Neuhauser, Hubert Rapp, Martin Haas, Christoph Kasper, Joerg Fricke-Schmidt, Guenther Schnalzger, Martin Kirschner, Elmar Vier, Stefan Eichmann, Jens Kolarsky, Gerhard Stokmaier, Dietmar Kratzer, Kurt Mueller
  • Publication number: 20140042347
    Abstract: A valve includes a valve housing having a fluid inlet and a fluid outlet with a longitudinal axis defined through the valve housing. The valve also includes a toggle mechanism configured and adapted to cycle flow from the fluid inlet to the fluid outlet through a plurality of different flow rates in response to repeated impulses. The toggle mechanism is also configured to hold flow rate steady between impulses.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 13, 2014
    Applicant: Delavan Inc
    Inventors: Brandon P. Williams, Neal A. Thomson
  • Patent number: 8613420
    Abstract: A solenoid valve for controlling a hydraulic system having a coil which is composed of an electrical conductor, an armature which is situated at least partially inside the coil and is connected to a valve element for opening and closing a flow opening of the solenoid valve, and a hydraulic fluid-filled valve chamber that accommodates the armature and communicates fluidically with the hydraulic system. The armature is supported in movable fashion in the hydraulic fluid of the hydraulic system. In order to reduce the viscosity of the hydraulic fluid, the coil is situated so that a heating of the coil produced by a current flow produces a heating of the hydraulic fluid in the valve chamber.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: December 24, 2013
    Assignee: Magna Powertrain AG & Co. KG
    Inventor: Thomas Linortner
  • Patent number: 8556231
    Abstract: A vertical rotor type gas solenoid valve comprises a valve case (14), a regulating spring (11), a regulating nail (10), a rotor regulating screw (9), a regulating screw bracket (12), a swing arm (18), a sealing gasket component arranged at an outer end of the swing arm (18), and a vertical rotor type electromagnet. The valve case (14) comprises a gas net (15), a gas outlet (16) and a valve port (17). The gas flow and the curve of the gas flow against the electric current of the winding can be regulated, and the minimum starting point of gas flow is determined.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: October 15, 2013
    Inventor: Zhaokeng Pan
  • Patent number: 8528879
    Abstract: The invention relates to a method and a device for producing a high-pressure-tight connection between a pole core and a valve sleeve of a solenoid valve and to an associated valve cartridge for a solenoid valve. According to the invention, the pole core is placed in a two-part compression mold, which comprises a middle die and an outer die, in such a way that a joining gap is produced between an inner bore of the outer die and the placed-in pole core. Subsequently, the pole core is placed against the valve sleeve and the valve sleeve is inserted into the joining gap. Then, the middle die and the outer die are pressed simultaneously with the pole core such that the valve sleeve passes into the joining gap. When a pressed diameter of the pole core is reached, the valve sleeve expands and is shaped in the joining gap between a first shaping edge and a second shaping edge and is joined onto the pole core. The diameter of the inner bore tapers between the first shaping edge and the second shaping edge.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: September 10, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Mueller, Guenther Schnalzger, Martin Kirschner
  • Patent number: 8517336
    Abstract: A solenoid valve for controlling a fluid is disclosed. The solenoid includes an armature, a pole core, wherein a working gap is provided between the armature and the pole core, a valve member which is connected to the armature and can be moved together with the armature, a valve body with a through-opening on which a valve seat is formed, wherein the valve member opens and closes the through-opening on the valve seat, a return element which applies a return force to the valve member in order to return the valve member to a closed state, a spring element which is arranged in the working gap, and an adjusting device which is in contact with the spring element in order to adjust a spring force of the spring element.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 27, 2013
    Assignee: Robert Bosh GmbH
    Inventor: Dietmar Kratzer
  • Patent number: 8505874
    Abstract: An adjusting screw structure of an oil immersed solenoid comprises a movable core provided in a first space of a main body case to be movable in an axial direction. The core is biased by an adjusting spring to be pulled by a fixed magnetic pole portion. An adjusting screw capable of adjusting biasing force of the adjusting spring is included. The adjusting screw structure includes an air-bleeding plug configured to detachably attach to and seal an opening end portion of a rear case, which communicates with the first space. The air-bleeding plug includes an internal screw portion that threadedly engages the adjustable screw. A detachable mechanism is configured to attach the air-bleeding plug to the opening end portion, locating the air-bleeding plug at a predetermined attachment position in a movement direction of the adjusting screw. Thus, air in a solenoid can be removed without causing a biasing force error.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 13, 2013
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Hiroaki Shimizu
  • Patent number: 8505873
    Abstract: A pressure regulating valve having a compression spring fixed in a valve housing for positioning a valve plunger connected to a magnetic armature in the position above a valve seat and not electromagnetically excited, in order to create a connection between at least two pressure medium channels opening into the valve housing, and having a further compression spring disposed coaxially to the first compression spring in the valve housing, having the characteristic that the first compression spring is designed as a control spring forming a stroke and force-specific spring drive by adjusting the spring rates of both compression springs to the force/distance curve of an electromagnet by varying the current in an exciter coil, wherein the further compression spring is designed as a variably adjustable spring acting opposite to the control spring.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: August 13, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Christian Courth, Christoph Voss, Harald Biller, Joachim Bohn, Holger Kollmann, José Garcia-Quilon
  • Patent number: 8448916
    Abstract: A solenoid valve for controlling a fluid is disclosed. The solenoid includes an armature, a pole core, wherein a working gap is provided between the armature and the pole core, a valve member which is connected to the armature and can be moved together with the armature, a valve body with a through-opening on which a valve seat is formed, wherein the valve member opens and closes the through-opening on the valve seat, a return element which applies a return force to the valve member in order to return the valve member to a closed state, a spring element which is arranged in the working gap, and an adjusting device which is arranged on the armature and which is in contact with the spring element in order to adjust a spring force of the spring element.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: May 28, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Patent number: 8430378
    Abstract: In one embodiment of the invention, a valve apparatus is provided to proportionally control fluid flow. The valve apparatus includes a housing having a valve body with an inlet port having a valve seat and an outlet port; a valve assembly including an armature, a movable fluid control member, and at least one spring biasing the valve assembly into a closed position, a diaphragm in contact with the valve seat of the inlet port when the valve is in the closed position, and a poppet plate backing the diaphragm, in contact with the fluid control member and extending beyond the valve seat on the inlet port. The valve apparatus also has a solenoid assembly including an electromagnetic coil and a pole piece, the solenoid moves the armature when energized to allow fluid to flow through the valve apparatus.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: April 30, 2013
    Assignee: South Bend Controls Holdings LLC
    Inventors: Peter G. Hutchings, Mark A. Beasley, Deron Kaczorowski, Donald Sack
  • Patent number: 8393346
    Abstract: A valve assembly includes a housing having a valve bore, a valve seat, and at least one port communicating with the bore. A moveable plunger resides in the valve bore and selectively seals against the valve seat. A bobbin integral with the housing has a solenoid bore adjacent to and coaxial with the valve bore. A moveable armature resides in the solenoid bore and has an operating rod connected to the plunger. A pole piece resides in the solenoid bore adjacent the armature. A solenoid coil is wound about the bobbin. A flux conductor partially surrounding the bobbin, pole piece, and armature. An assembly method includes flowing air through the port, inserting the plunger or another sealing element into the bore while monitoring the fluid flow; and stopping the plunger or sealing element when the flow is at a preselected condition.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: March 12, 2013
    Assignee: Parker-Hannifin Corporation
    Inventors: Douglas Allan Curtis, Nathan Horst Davis, Linnea M. Hargraves
  • Patent number: 8328158
    Abstract: A module solenoid valve (14) includes a valve body (16) defining an inlet opening (22) and an outlet opening (20). The valve body includes a valve seat (18) at a distal end thereof. A valve member (24) controls flow of fuel through the outlet opening. A movable armature (26) is coupled with the valve member such that movement of the armature moves the valve member between a closed position and an open position. A stator (38) is associated with the armature. An electromagnetic coil (36) is associated with the stator and armature for causing movement of the armature towards the stator. A spring (32) biases the armature and thus the valve member to the closed position. The spring provides a spring force that is greater than a first, normal hydrostatic force applied to the valve seat, but less than a second, overpressure hydrostatic force applied to the valve seat.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: December 11, 2012
    Assignee: Continental Automotive Systems US, Inc.
    Inventor: Rodney E. Crispen
  • Patent number: 8317157
    Abstract: A module solenoid valve (14) includes a valve body (16) defining an inlet opening (22) and an outlet opening (20). The valve body includes a seating surface (18) at a distal end thereof. A valve member (24) controls flow of fuel through the outlet opening. A movable armature (26) is coupled with the valve member such that movement of the armature moves the valve member between a closed position and an open position. A stator (38) is associated with the armature. A first spring (32) biases the armature and thus the valve member to the closed position. A cover (28) is coupled to the stator. A second spring 34 is between the cover and the armature to provide a biasing force on the armature. An electromagnetic coil (36) is associated with the stator and armature for causing movement of the armature towards the stator.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 27, 2012
    Assignee: Continental Automotive Systems US, Inc.
    Inventor: Michael J. Hornby
  • Patent number: 8286897
    Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: October 16, 2012
    Assignee: Magneti Marelli
    Inventors: Pasquale Dragone, Andrea Cobianchi, Mirco Vignoli
  • Patent number: 8231105
    Abstract: The metering servovalve (7) includes a valve body (8, 30), a shutter (45), and an electromagnet (15), and is housed inside a casing (2) of the injector (1). The electromagnet (15) activates a movable armature (16) performing a travel defined by a stop member (19) carried by the electromagnet (15), which is fixed inside the casing by a threaded ring nut (40) with the interposition of at least one deformable shim (48). The ring nut (40) is screwed to a predetermined tightening torque to a thread (46) on the casing (2) to elastically deform the shim (48). And the shim (48) is defined by a metal ring with, for example, an L-, C-, S-, Z- or ?-shaped cross section.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: July 31, 2012
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Adriano Gorgoglione, Sisto Luigi De Matthaeis
  • Patent number: 8205858
    Abstract: An electromagnetic pressure regulating valve has a valve portion for conducting and regulating the pressure of an operating medium, such as oil, a magnet portion for actuating the valve portion for regulating the pressure of the operating medium and having a magnet housing, in which a magnet core is located that as needed exerts magnetic force on an armature, located in the magnet housing, a spring with a spring force generating a pressure activation threshold to be overcome upon regulation and located between the armature and an adjusting ball that is located in a pole piece of the magnet housing, and the spring has regions of different diameter.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: June 26, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Erwin Mueller, Klaus Schudt, Michael Duerr, Rene Deponte, Guido Daimer
  • Patent number: 8167000
    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: Grant
    Filed: June 18, 2008
    Date of Patent: May 1, 2012
    Assignee: MAC Valves, Inc.
    Inventors: Robert H. Neff, Jeffrey Simmonds, Eric P. Janssen
  • Patent number: 8151824
    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: Grant
    Filed: April 5, 2007
    Date of Patent: April 10, 2012
    Assignee: MAC Valves, Inc.
    Inventors: Kevin C. Williams, Robert H. Neff, Jeffrey Simmonds
  • Patent number: 8128004
    Abstract: In order to operate an injection valve, a freewheeling operating state is controlled as the nozzle needle moves to its closing position, and a current through the coil is detected as a freewheeling current during freewheeling. As the nozzle needle moves to its closing position, a braking current pulse (I_BR) is generated on the basis of a time derivative (DI_DT_FW) of the freewheeling current and is impressed on the coil.
    Type: Grant
    Filed: January 2, 2007
    Date of Patent: March 6, 2012
    Assignee: Continental Automotive GmbH
    Inventor: Achim Koch
  • Patent number: 8123193
    Abstract: The invention relates to a magnetic valve having a magnetic assembly and a capsule. An armature is disposed in the capsule and a valve insert is inserted in the capsule. A tappet is guided in a displaceable manner within the inner bore of the valve insert and sealingly immerges in a sealing seat. The valve insert is arranged at a distance from the armature via an adjustable air gap. According to the invention, the sealing seat is arranged in a sleeve which itself is disposed inside the capsule. The sleeve has at least one opening through which adjusting elements act upon the valve seat in order to regulate the magnetic flux generated by the magnetic assembly. The air gap between the valve insert and the armature is variable, whereby the adjusting elements either move the valve insert in axial direction towards the armature in order to increase the magnetic flux or move the valve insert away from the armature in order to reduce the magnetic flux.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: February 28, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Patent number: 8109519
    Abstract: The invention describes a leak proof shaft seal for valves and other pressurized vessels, wherein the shaft seal can deform elastically by either stretching or twisting without loosing its ability to seal all, or a portion, of said shaft from harmful fluids. Furthermore, the elastic shaft seal is immune to static pressures, since it closely surrounds a shaft and thus is protected from collapse.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: February 7, 2012
    Inventor: Hans D. Baumann
  • Patent number: 8082953
    Abstract: A solenoid valve assembly includes a bobbin supporting a coil and having at least one protrusion on an inner surface, an adjustment member disposed within the bobbin and in contact with the at least one protrusion, a pole piece disposed within the adjustment member, a valve body having a seat, wherein the bobbin is disposed in contact with the seat, a spool slideably disposed within the valve body, and a resilient member disposed in contact with the adjustment member and the spool.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: December 27, 2011
    Assignee: Eaton Corporation
    Inventor: Robert Andrew Dayton
  • Patent number: 7918208
    Abstract: A movable portion is movable from a closed position, in which the movable portion is in contact with a valve element, to an opened position so as to supply fuel from a fuel portion to a compression chamber through a fuel passage. A drive control unit supplies of a small driving current, which is sufficient to maintain the movable portion at the closed position, to a coil portion so as to move the movable portion from the opened position to the closed position. The drive control unit switches the supply of the small driving current to supply of the large driving current in the course of the movement of the movable portion to the closed position by supplying the small driving current.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: April 5, 2011
    Assignee: Denso Corporation
    Inventors: Jun Hasegawa, Masahiro Yokoi, Yoshihito Suzuki, Kaoru Oda
  • Patent number: 7895993
    Abstract: The present invention relates to an internal combustion engine (1), in particular for a vehicle, having at least one exhaust gas recirculation line (13) for externally recirculating exhaust gases from an exhaust gas side of the internal combustion engine (1) to a fresh air side of the internal combustion engine (1). To provide a cost-effective and compact design, a combination valve (14) is situated in the exhaust gas recirculation line (13), said combination valve (14) serving to set the quantity of the exhaust has recirculated from the exhaust gas side to the fresh air side and to block a counterflow from the fresh air side in the direction of the exhaust gas side.
    Type: Grant
    Filed: March 11, 2006
    Date of Patent: March 1, 2011
    Assignee: Mahle International GmbH
    Inventor: Rafael Weisz
  • Patent number: 7871058
    Abstract: A hot melt adhesive or other thermoplastic material dispensing valve assembly comprises a pair of oppositely disposed electromagnetic solenoid assemblies which alternatively act upon a pair of armatures which are fixedly mounted upon a valve stem, upon which is fixedly mounted a valve member, so as to rapidly and assuredly control the reciprocal movements of the valve stem, and the valve member attached thereto, between its unseated or OPENED position and its seated or CLOSED position. A coil spring also biases the valve stem and the valve member toward the seated or CLOSED position such that when both of the electromagnetic solenoid assemblies are de-energized, the coil spring maintains the valve member at its seated or CLOSED position upon the valve seat.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 18, 2011
    Assignee: Illinois Tool Works Inc.
    Inventors: James W. Robinson, C. Randolph Tiller, Richard L. Edwards
  • 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: 7766037
    Abstract: A gas valve assembly includes a solenoid coil, a linearly actuated plunger, and a stop member. The plunger is disposed in the coil so that a gap exists between the plunger and the stop member at a deenergized condition of the solenoid. The assembly includes a valve having a port and a closing member. The closing member blocks the port in a closed position corresponding to the de-energized condition of the solenoid, and slidably unblocks the port in an open position corresponding to the energized condition of the solenoid. An adjustable length member is coupled to the closing member and the plunger and has a portion accessible external to the valve assembly. The externally-accessible portion of the adjustable length member is adjustable to vary the size of the gap between the plunger and the stop member when the closing member is in the closed position.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: August 3, 2010
    Assignee: Honeywell International, Inc.
    Inventors: Patrick R. Moenkhaus, Scott O'Leary
  • Patent number: 7721712
    Abstract: A pressure regulating valve in a fuel injection system for internal combustion engines for regulating the pressure in a fuel reservoir in which the operating pressure is adjusted by the dimensioning of an adjusting disk, whose function-determining axial height is ascertained with high precision by a force measuring system and by a travel measuring system by way of ascertaining a spacing between an end face of a valve member of the pressure regulating valve and a reference face of a housing of the pressure regulating valve.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: May 25, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Michael Bitter, Helmut Sattmann, Peter Luckeneder, Johann Schardax, Gerold Neuwirt
  • Patent number: 7673818
    Abstract: In an electromagnetic fuel injection valve designed so that the contact of a movable attraction face at a rear end of a movable core with a stationary attraction face included at a front end of a stationary core is inhibited, a ring-shaped stopper (28) made of a material non-magnetic or magnetic weakly more than a movable core (18) is press-fitted into an inner periphery of a rear portion of the movable core (18), and a flat abutment face (51), which is disposed at a location displaced from a flat movable attraction face (41) formed at the rear end of the movable core (18) toward a stationary attraction face (42), is formed at a rear end of the stopper (28) to be able to abut against the stationary attraction face. A slant (52) is formed on an inner periphery of the rear end of the movable core (18) and an outer periphery of the rear end of the stopper (28) to continuously and smoothly connect the movable attraction face (41) and the abutment face (51) to each other.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: March 9, 2010
    Assignee: Keihin Corporation
    Inventor: Akira Akabane
  • Patent number: 7640989
    Abstract: Electrically operated well tools. A well system includes a well tool positioned in a wellbore. The well tool includes an actuator and an operating member displaceable to operate the well tool. The actuator includes a series of longitudinally distributed electromagnets, in which current is controllable in a predetermined pattern to thereby variably control longitudinal displacement of the operating member. In another well system, the operating member is displaceable between opposite maximum limits of displacement to operate the well tool, and an electromagnet is operative to displace the operating member to at least one position between the opposite maximum limits of displacement. In a method of operating a well tool, the well tool is operated by controlling current in a series of longitudinally distributed electromagnets of an actuator in a predetermined pattern, thereby causing corresponding longitudinal displacement of an operating member.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 5, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jimmie R. Williamson, Jr., James D. Vick, Jr.
  • Publication number: 20090205348
    Abstract: There is provided a brazing method which makes it possible to rationally perform not only the brazing between a metal member such as a stator made of a magnetic material and a metal member such as a guide pipe made of a non-magnetic material but also the magnetic annealing of these metal members. By making use of a brazing material (90) which can be fused at a lower temperature than a magnetic annealing temperature of metal member (33), the metal member such as a stator made of a magnetic material and the metal member (35) such as a guide pipe made of a non-magnetic material are heated to a predetermined temperature in a furnace to perform the magnetic annealing of the metal member (33) concurrent with the brazing of these metal members.
    Type: Application
    Filed: April 24, 2009
    Publication date: August 20, 2009
    Inventors: Yoshiyuki Kume, Masayuki Imai, Tatsuya Kondo, Toru Watanuki
  • Patent number: 7552909
    Abstract: An injector with an adjustable-metering servo valve is provided. The injector has a shutter actuated by an armature of an electromagnet. The armature is mobile for an opening stroke defined by a surface of the core of the electromagnet, which is fixed in the casing by a ring nut and a hollow support of the core. The hollow support has a first contact surface that acts on a flange of the core. Set between the surface and a shoulder of the casing is a shim. An annular projection, having a second contact surface, is set between the surface and a shoulder of the casing. The second contact surface is contained at least in part in the area corresponding to the first contact surface so that the stroke of the armature is adjusted by plastic deformation of the shim or of the surface of the core.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: June 30, 2009
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Adriano Gorgoglione, Raffaele Ricco, Antonio Gravina
  • 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
  • Patent number: 7458529
    Abstract: The metering servovalve (7) comprises a valve body (8, 30), an open/close element (45) and an electromagnet (15), and is housed in a casing (2) of the injector (1). The electromagnet (15) actuates a mobile armature (16) for a travel defined by a polar surface (19) of the core (18) of the electromagnet (15). This latter is fixed in the casing (2) by means of a threaded ring nut (40), with the interposition of at least one deformable adjustment shim (48). The ring nut (40) is screwed with a pre-set tightening torque on a thread (46) of the casing (2) so as to bring about an elastic deformation of the adjustment shim (48) and to prevent accidental unscrewing of the ring nut (40). The adjustment shim (48) is constituted by a metal ring with a cross section having a shape chosen between L, C, S, Z, and ?.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 2, 2008
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Adriano Gorgoglione, Sisto Luigi De Matthaeis
  • 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
  • Patent number: 7377290
    Abstract: A valve assembly for a vibration damper includes a valve housing, an actuator for driving an adjustable valve part, and a circuit arrangement having an opening which provides access to the actuator, wherein the actuator has a coil. The actuator and the circuit arrangement are arranged in the housing. A coating arranged on the circuit arrangement is shaped and dimensioned to position the circuit arrangement at a fixed position and orientation relative to the actuator. An outer plastic jacket is arranged over the coating of the circuit arrangement and encloses the coil of the actuator, so that the outer plastic jacket protects both the circuit arrangement and the coil.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: May 27, 2008
    Assignee: ZF Friedrichshafen AG
    Inventors: Bernd Albert, Jürgen Lindenthal, Stefan Rappelt, Christina Wittwer