Spool Patents (Class 137/625.34)
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Patent number: 11797031Abstract: A cartridge flow rate adjusting assembly for a hydraulic valve, may include a cartridge body, a stem that is slidingly disposed in the cartridge body, and a shutter to be slidingly placed against a passage opening. The cartridge flow rate adjusting assembly may further include a sleeve rotatively disposed inside the valve that may include at least one first opening to enable adjustment of a maximum flow rate of the valve within a first range of values, and according to a first scale at least one second opening made in the wall to enable adjustment of the maximum flow rate of the valve within a second range of values according to a second scale. A hydraulic control valve is also provided that comprises a cartridge flow rate adjusting assembly.Type: GrantFiled: February 24, 2020Date of Patent: October 24, 2023Inventors: Samuele Molina, Giuliano Ruga
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Patent number: 11719345Abstract: An example method includes moving a first portion of a control element and a second portion of the control element coupled to the first portion from a closed position to an intermediate position. In the closed position, the first portion being seated against a first valve seat thereby preventing flow through a first orifice and the second portion being seated against a second valve seat thereby preventing flow through a second orifice. In the intermediate position, flow through the first orifice is deterred and flow through the second orifice is permitted. The method includes moving the first portion and the second portion from the intermediate position to an open position. In the open position, the first portion being spaced from the first valve seat thereby permitting flow through the first orifice and the second portion being spaced from the second valve seat thereby permitting flow through the second orifice.Type: GrantFiled: January 19, 2022Date of Patent: August 8, 2023Assignee: FISHER CONTROLS INTERNATIONAL LLCInventors: David L. Hostetter, Benjamin J. Harris
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Patent number: 11578804Abstract: A valve includes: a drive; a plunger connected to the drive; and two closing bodies connected to the plunger and movable by the plunger such that the two closing bodies are movable into abutment against respective sealing seats or away from the respective sealing seats. The two closing bodies are arranged fixedly on a sleeve, and the sleeve is slidable onto the plunger and connected fixedly to the plunger.Type: GrantFiled: October 9, 2019Date of Patent: February 14, 2023Assignee: VITESCO TECHNOLOGIES GMBHInventors: Christian Weis, Eduard Cornel Petca
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Patent number: 11359740Abstract: An electromagnetic valve includes a sleeve having a valve hole at a central portion thereof, a spool, and an electromagnetic solenoid. The sleeve has plural ports penetrating the sleeve between inner and outer peripheral surfaces thereof and disposed side by side in a central axis direction of the valve hole. In the spool, plural lands having an outer peripheral surface facing an inner peripheral surface of the valve hole are provided side by side in the central axis direction. The electromagnetic solenoid is configured to move the spool in the central axis direction in the valve hole. The ports have one or plural recessed portions in which working oil is stored. When the spool is decentered with respect to the sleeve, a pressure of the working oil stored is increased.Type: GrantFiled: July 27, 2020Date of Patent: June 14, 2022Assignee: JTEKT CORPORATIONInventors: Kaori Fujita, Toshihiko Shima, Teppei Morita, Toshio Murakami, Shungo Kamigaichi, Tomohiro Shiromaru
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Patent number: 9425471Abstract: A fuel cell system includes a fuel cell stack, a cathode supply flow passage which is connected to the fuel cell stack and through which cathode gas flows, a cathode off-gas flow passage which is connected to the fuel cell stack and discharges cathode off-gas, a bypass flow passage which is branched off from the cathode supply flow passage and through which a part of the cathode gas flows while bypassing the fuel cell stack, a bypass valve configured to regulate a bypass flow rate in the bypass flow passage and include an atmosphere communication hole, and an anode off-gas flow passage which is connected to the fuel cell stack and discharges anode off-gas. The anode off-gas flow passage joins the bypass flow passage at a side downstream of the cathode off-gas flow passage or the bypass valve, and the bypass valve is formed with a clearance configured to leak a predetermined quantity of gas even in a fully closed state.Type: GrantFiled: March 12, 2013Date of Patent: August 23, 2016Assignee: NISSAN MOTOR CO., LTD.Inventor: Takamitsu Tokuoka
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Publication number: 20140352825Abstract: An end cap assembly configured for use in a control valve and in combination with a spool includes a stater, the stater having a spool stop having a hardened surface.Type: ApplicationFiled: May 31, 2013Publication date: December 4, 2014Inventors: Robert Donald Roy, Martin Heiner Luedicke
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Patent number: 8793971Abstract: A fuel supply system for a gas turbine engine has a first pump for delivering fuel to a first use on a gas turbine engine, and a second pump for delivering fuel to a second use on the gas turbine engine. A valve allows flow from the first pump to be delivered to the first use, but also routes some flow from the first pump to supplement fuel flow from the second pump until a pressure downstream of the second pump increases. The valve then allows flow from the second pump to flow to the first use to supplement the flow from the first pump.Type: GrantFiled: May 25, 2010Date of Patent: August 5, 2014Assignee: Hamilton Sundstrand CorporationInventors: Gerald P. Dyer, Kevin Gibbons
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Publication number: 20130228229Abstract: A coupling plate of a detent lever is assembled to an oil-pressure control device, wherein a transmission casing is a base for an assembling process. A slider of a range sensor coupled to the coupling plate is assembled to the transmission casing via a sensor body. A spool of a manual valve coupled to the coupling plate is assembled to the transmission casing via a valve body fixed to the sensor body. The coupling plate, the slider and the spool are assembled together, wherein the transmission casing is used as the base for the assembling process. It is not necessary to relatively position the slider and the spool to each other during the assembling process for an oil-pressure control device.Type: ApplicationFiled: February 28, 2013Publication date: September 5, 2013Applicant: DENSO CORPORATIONInventor: Akira TAKAGI
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Patent number: 8393344Abstract: The microvalve device includes a pilot microvalve and a pilot operated spool valve. The pilot microvalve includes a pilot input orifice; a pilot output orifice, at least one of the pilot input orifice and the pilot output orifice having a cross-section flow area that changes as the pilot microvalve is actuated; and a passageway providing fluid communication between the pilot input orifice and the pilot output orifice. The pilot operated spool valve includes a spool having a surface in fluid communication with the passageway; a spool input port; and a spool output port, at least one of the spool input port and the spool output port having a cross-section flow area that changes as the spool is actuated. The spool valve is operable by the pilot microvalve such that a ratio of the cross-sectional flow area of the spool input port to the spool output port will substantially equal to a ratio of the cross-sectional flow area of the pilot input orifice to the pilot output orifice.Type: GrantFiled: September 29, 2009Date of Patent: March 12, 2013Assignee: DunAn Microstaq, Inc.Inventor: Harry A. Hunnicutt
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Patent number: 8393355Abstract: A short stroke flow control device or valve which is adapted to provide velocity control trim in a short stroke. The valve constructed in accordance with the present invention comprises multiple disk stacks or cages which are separated from each other by intervening spacers, and are placed axially in a valve gallery clamped between a seat ring and bonnet of the valve. The fluid passageways in the cages are throttled in a controlled manner by a plug which defines multiple throttling elements or plug lobes, the number of plug lobes defined by the plug preferably being equal to the number of cages included in the valve. The plug lobes of the plug control the flow of fluid through the disk stacks or cages in tandem. All of the throttling elements or plug lobes of the plug, with the possible exception of the plug lobe which contacts the seat ring for closure, is larger in diameter than the remainder of the plug and has at least one kidney bean shaped flow passage extending therethrough.Type: GrantFiled: May 28, 2009Date of Patent: March 12, 2013Assignee: Control Components, Inc.Inventor: Sekhar Samy
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Patent number: 8307902Abstract: A downhole flow control tool 1, includes a flow control member in the form of a sleeve 8, and comprises a main body 2 having a longitudinal internal bore 3 extending therethrough, an upper end 4 having a box section 6, and a lower end 5 with a pin section 7, which enable connection of the tool 1 into a work string. The flow control sleeve 8 is mounted for movement relative to the bore 3 between at least a closed and one of several open positions. The tool body 2 includes several flow ports extending through a wall of the body 2 and spaced around a circumference of the body 2. The tool provides multiple fluid flow control options for directing and splitting fluid flow for example during a drilling operation to clear settled cuttings by suitable location of the tool.Type: GrantFiled: May 21, 2008Date of Patent: November 13, 2012Assignee: Specialised Petroleum Services Group LimitedInventor: George Telfer
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Patent number: 8245728Abstract: A miniature quantum fluid transfer system configured to regulate the flow rate of a fluid by allowing passage of very small, discrete increments of fluid through the valve including a valve body having at least one inlet to receive fluid and at least one outlet to release fluid. The quantum fluid transfer system includes a valve rod movably disposed in a first chamber in the valve body. The valve rod has a plurality of fluid passages spaced longitudinally along the valve rod, and the valve rod is movable to align each fluid passage with an inlet or outlet port in the first chamber to allow fluid to flow through selected inlet or outlet ports corresponding to selected fluid passages. The quantum fluid transfer system has a plug movably disposed in a second chamber in the valve body.Type: GrantFiled: May 8, 2008Date of Patent: August 21, 2012Assignee: Raytheon CompanyInventors: Stephen C. Jacobsen, Shane Olsen
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Patent number: 8118112Abstract: A hydraulic rock breaking device, a protection valve and a method of operating a hydraulic rock breaking device. The rock breaking device comprises a percussion device to which pressure fluid is fed along an inlet channel. The inlet channel is provided with a protection valve arranged to monitor the volume flow of pressure fluid flowing through it. If the flow is larger than what has been preset, the protection valve closes, at least partly, the connection through it, protecting thus the percussion device against too high an input power. The protection valve comprises a throttle which generates a pressure difference the magnitude of which is dependent on the fed volume flow. Information on the pressure difference is utilized in controlling the protection valve.Type: GrantFiled: October 3, 2008Date of Patent: February 21, 2012Assignee: Sandvik Mining and Construction OyInventor: Esko Juvonen
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Patent number: 8006718Abstract: A sleeve has an input port, an output port, an insertion hole, and only one discharge port. A spool is axially slidable through the insertion hole to communicate among the input port, the output port, and the discharge port. An electric actuator is provided to one end of the sleeve and has a variable volume chamber, which communicates with the discharge port through an axial through hole and a spool breathing hole in the spool. The spool has a communication through hole to lead fluid from the output port to the discharge port through the axial through hole. A passage partition member is in the axial through hole to define an in-spool breathing passage communicating with the spool breathing hole.Type: GrantFiled: June 3, 2008Date of Patent: August 30, 2011Assignee: Denso CorporationInventors: Yasuhiro Hamaoka, Jiro Kondo
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Publication number: 20090266432Abstract: The present invention provides a spool seat with a positioning structure, which resolves the shortcomings of the assembly of a typical spool ceramic disc and spool seat. The spool seat of the present invention is provided with a chamber space for locating the fixed ceramic disc. The chamber space is provided with an internal locating portion which comprises an internal locating flange and external locating flange. An external locating portion is protruded from the chamber space. The chamber space is divided into inlet space and outlet space via the arrangement of internal locating portion. It is possible to eliminate the space restrictions for the fixed ceramic disc, and also prevent the rotation and slide or displacement when the fixed ceramic disc is assembled into the chamber space of the spool seat.Type: ApplicationFiled: April 28, 2008Publication date: October 29, 2009Applicant: Kuching International Co., Ltd.Inventor: Mei-Li Chen
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Patent number: 7537026Abstract: An on-off valve is disclosed, especially a fast-acting on-off valve, wherein a plunger is pretensioned in a base position. The plunger has a plurality of parallel control edges via which a plurality of sectional opening cross-sections, arranged in parallel in a hydraulic manner, can be jointly actuated to open or close when the valve is switched.Type: GrantFiled: April 5, 2005Date of Patent: May 26, 2009Assignee: Bosch Rexroth AGInventors: Jörg Dantlgraber, Heino Försterling, Rudolf Scheidl, Bernd Winkler
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Patent number: 7527072Abstract: A gas cook-top with glass (capacitive) touch controls and automatic burner re-ignition is provided. The gas cook-top utilizes a variable flow gas control valve that is driven by an electronic controller whose user interface provides a glass capacitive touch interface. Various electronic features including safety lockouts and burner re-ignition are provided, as is relational control of the burner flame. As a user moves their finger along a flame adjust indicator, the electronic control positions the variable flow gas valve to control the flame height of the burner to correspond to the relative position along the indicator selected by the user.Type: GrantFiled: November 30, 2006Date of Patent: May 5, 2009Assignee: Robertshaw Controls CompanyInventor: Andrew Crnkovich
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Patent number: 7503115Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.Type: GrantFiled: May 19, 2005Date of Patent: March 17, 2009Assignee: Schaeffler KGInventors: Klaus Daut, Eduard Golovatai-Schmidt
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Patent number: 7458393Abstract: A control valve for regulating flow of fluids has an actuator located in a control chamber connected to a valve body. The valve body defines a flow passageway passing through an opening. A plug is associated with the actuator such that movement of the actuator from a retracted position towards an extended position displaces the plug towards the opening. The valve also includes a guide-and-seat insert which provides a valve seat interconnected with an attachment collar via a number of plug guides. When the plug is displaced by the actuator, the plug slides in contact with at least two of the plug guides. When the actuator moves to its extended position, the plug closes against the closure surface of the valve seat so as to block the passage of fluid from an inlet to an outlet of the valve.Type: GrantFiled: March 28, 2006Date of Patent: December 2, 2008Assignee: Bermad CS, LtdInventor: Zvi Weingarten
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Patent number: 7455073Abstract: A fluid valve has a housing having an inlet port and an outlet port. A fluid flow path extends between the inlet port and the outlet port. A valve member is located in the housing in the fluid flow path. The valve member is moveable among a series of positions. The valve member and the housing have a plurality of apertures arranged such that a varied selection of the apertures is in the fluid flow path according to the indexed position of the valve member. In at least one indexed position of the valve member no apertures are in the flow path.Type: GrantFiled: August 21, 2006Date of Patent: November 25, 2008Assignee: Robertshaw Controls CompanyInventors: Konstantin Shukhmin, Rana Waitai, Andrew Palmer
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Patent number: 7389756Abstract: The invention relates to a control valve (20) for an apparatus (1) for the variable setting of the control times of gas exchange valves (110, 111) of an internal combustion engine (100), having a valve housing (22) of hollow configuration which has at least one inflow connection (P), at least one outflow connection (T) and at least two working connections (A, B), and having a control plunger (35).Type: GrantFiled: November 2, 2006Date of Patent: June 24, 2008Assignee: Schaeffler KGInventors: Jens Hoppe, Ali Bayrakdar
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Patent number: 6968816Abstract: In an oil flow control valve (OCV) according to the present invention, a first volume varying chamber is adapted to communicate with a second volume varying chamber through a second plunger breathing path, and the second volume varying chamber is adapted to communicate with a first breathing hole through an intra-plunger breathing path, an intra-shaft breathing path, and a third volume varying chamber. That is, the breathing path to the second volume varying chamber is long and the volume thereof is large, and the breathing path to the first volume varying chamber is still longer and larger in its volume. Consequently, the amount of foreign matters getting into the first and second volume varying chambers can be decreased and therefore it is possible to prevent the occurrence of an operation defect of the OCV.Type: GrantFiled: October 15, 2004Date of Patent: November 29, 2005Assignee: Denso CorporationInventors: Eiji Isobe, Jiro Kondo
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Patent number: 6966285Abstract: A valve actuator control monitors engine valve trajectory, lift and seating velocity and varies the timing of internal feedback control channels to correct for engine valve positioning errors to achieve precise engine valve lift, closing timing and desired seating velocity.Type: GrantFiled: October 13, 2004Date of Patent: November 22, 2005Assignee: General Motors CorporationInventor: Zongxuan Sun
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Patent number: 6935290Abstract: A VCT phaser for an internal combustion engine with at least one camshaft comprising a housing, a rotor, a spool valve and a ring-shaped reservoir. The housing having at least one chamber and the rotor having at least one vane dividing the chambers into advance and retard. The spool valve is comprised of a spool mounted within a bore of the rotor. The reservoir is defined within the bore by an oil dam and at least one of the spool lands. The spool has a first position in which a chamber is coupled to the supply and the other chamber is exhausting fluid and a second position in which a chamber is coupled to the supply and the other chamber is coupled to the reservoir. When a torque reversal occurs, hydraulic fluid pooled in the reservoir is drawn into the other chamber when the spool is in the second position.Type: GrantFiled: July 14, 2004Date of Patent: August 30, 2005Assignee: BorgWarner Inc.Inventor: Zhenyu Jiang
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Patent number: 6928967Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.Type: GrantFiled: September 30, 2004Date of Patent: August 16, 2005Assignee: INA-Schaeffler KGInventors: Klaus Daut, Eduard Golovatai-Schmidt
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Patent number: 6889641Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.Type: GrantFiled: December 15, 2003Date of Patent: May 10, 2005Assignee: Ina Walzlager Schaeffler oHGInventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
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Patent number: 6851451Abstract: What is disclosed is a method for manufacturing a valve piston, as well as a valve piston, wherein flow in the fine control range is determined through control windows formed by a through opening extending through the valve body.Type: GrantFiled: January 31, 2001Date of Patent: February 8, 2005Assignee: Bosch Rexroth AGInventor: Klaus Hoefling
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Patent number: 6752734Abstract: This invention provides a switch valve which can increase durability without causing driver discomfort at a time when a failure occurs. The switch valve has a spool is formed by a spool portion and a plunger which is arranged so as to freely abut against the spool portion. The switch valve also include a spool surrounding portion surrounding the spool and provided with a plurality of land portions. The spool selectively adopts a position at a normal, non-failure state and a position at a fail state. In the position at the normal state, at least one corner portion of the land in the plunger protrudes from an end portion of the corresponding land portion. Because a stepped wear portion is not formed on an inner peripheral surface of the land portion, foreign materials, such as wear powders or the like, do not enter a portion between an outer peripheral surface of the land and the inner peripheral surface of the land portion when the failure occurs.Type: GrantFiled: July 1, 2002Date of Patent: June 22, 2004Assignees: Aisin AW Co., LTD, Toyota Jidosha Kabushiki KaishaInventors: Masahiro Itou, Naoyuki Fukaya, Mikio Iwase, Kazunori Ishikawa, Yoshihiro Iijima
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Publication number: 20040094215Abstract: The invention concerns an electrovalve proportional to a field current supplying the field coil (5) axially enclosing a mobile core (76), whereto is secured a push rod (16) sliding in a polar component (9) of the fixed magnetic circuit co-operating with the field coil, actuating a shutter (2, 3) comprising at least a valve (25, 26) co-operating with a scat (28, 29) to open and close the shutter, return means (32, 33) providing it with a stable neutral position relative to the seal when the field current is null, each valve being coaxial to the push rod and actuated thereby. The invention is characterised in that the mechanical linkage between the stem of each valve (17, 27) and, either the stem of the adjacent valve, or the push rod, constitutes a punctual contact.Type: ApplicationFiled: November 13, 2003Publication date: May 20, 2004Inventors: Christian Dragoni, Emmanuel Hermet, Michel Hernandez, Francois Rosaz
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Publication number: 20030168111Abstract: Disclosed is an EGR valve which is compact in size and can increase an amount of exhaust gas to be recirculated in comparison with that of the prior art without deteriorating mountability of an engine to a vehicle. The EGR valve has a housing with a mounting surface adapted to be mounted to an exhaust gas confluence port on a suction pipe, an gas intake pathway extending through the housing along the mounting surface and having longitudinal ends one of which is opened as gas inlet, gas discharge pathways in the housing for communication with longitudinally spaced portions of the gas intake pathway via openings and opened via gas outlets to the mounting surface, and actuators mounted on the housing for moving valve bodies to selectively open and close the openings.Type: ApplicationFiled: March 5, 2003Publication date: September 11, 2003Applicant: HINO MOTORS LTD.Inventors: Ryuuichi Koga, Yoshiyuki Nii, Yuuichi Takeuchi
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Patent number: 6615868Abstract: A spool valve includes a groove defined in the spool and a notch. A line A is drawn to extend through a communication zone a provided upon communication of the notch which is disposed at a distal end of the line A and defined in a step of a spool with an input port to form a 69° angle with respect to an L-axis. Fluid flowing into the groove through the communication zone a upon communication of the notch with the input port, does not collide with other portions of the spool before colliding with a bottom of the groove. Therefore, the flow of the fluid along the L-axis causes a flow force applied to the spool to be suppressed resulting in a decreased load on an actuator. The notch makes it is possible to ensure the stable operation of a spool valve, while preventing the self-induced vibration of the spool.Type: GrantFiled: October 12, 2001Date of Patent: September 9, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Akihiro Ueki
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Patent number: 6408882Abstract: An apparatus and method is disclosed for an improved diverter valve comprising a valve housing defining an internal chamber. A main port and a first and a second port communicate with the internal chamber in a Y-shape configuration. A spool valve element is slidably disposed within the internal chamber of the valve housing. An actuator moves the spool valve element between a first position and a second position for diverting fluid between the main port and the first port and the main port and the second port. The improved diverter valve is suitable for use with viscous fluids operating under high or low temperature and high pressure.Type: GrantFiled: November 8, 2000Date of Patent: June 25, 2002Inventor: Walter L. Smith, Jr.
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Patent number: 6397890Abstract: A variable metering fluid control valve comprising a valve body having at least one work port and one exhaust port with the ports in fluid communication with a spool bore and an exhaust core, said exhaust core having an exhaust core land and a reciprocating valve spool in the spool bore to control communication of fluid between the work port and the exhaust core, with said valve spool having a land portion with a plurality of variable length metering notches, wherein the land portion of the valve spool remains in contact with the exhaust core land through the full stroke of the valve spool. The variable length metering notches may be varied in width, depth, and cross-section so that precise control of the fluid system is achieved.Type: GrantFiled: February 15, 1999Date of Patent: June 4, 2002Assignee: Case Corp.Inventors: Roger Mickelson, Matthew J. Hennemann, David Swaim
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Patent number: 6386234Abstract: In a double seat valve (1) comprising a valve body (8) with an upper valve disk (6) and a lower valve disk (7), an upper valve seat (4) for the upper valve disk (6) and a lower valve seat (5) disposed underneath for the lower valve disk (7), and an adjustment element for the valve body (8) for opening this valve body (8) against the action of a closing spring (9), the valve body (8) is guided displaceably on the adjustment element and that on the adjustment element a limit stop (14) is provided which takes the valve body (8) along in opening direction (10), which limit stop (14) is spaced from its bearing, effective in taking along, on the valve body (8) when the valve body (8) has been closed. Upon opening the adjustment element first performs an idle stroke, before the valve body is taken along. Upon closing the adjustment element performs an additional overtravel corresponding to the idle stroke, when the valve body already rests with both its valve disks on the respective valve seats.Type: GrantFiled: February 2, 2001Date of Patent: May 14, 2002Assignee: Karl Dungs GmbH & Co.Inventor: Rolf-Helmut Sontag
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Publication number: 20010025661Abstract: In a double seat valve (1) comprising a valve body (8) with an upper valve disk (6) and a lower valve disk (7), an upper valve seat (4) for the upper valve disk (6) and a lower valve seat (5) disposed underneath for the lower valve disk (7), and an adjustment element for the valve body (8) for opening this valve body (8) against the action of a closing spring (9), the valve body (8) is guided displaceably on the adjustment element and that on the adjustment element a limit stop (14) is provided which takes the valve body (8) along in opening direction (10), which limit stop (14) is spaced from its bearing, effective in taking along, on the valve body (8) when the valve body (8) has been closed. Upon opening the adjustment element first performs an idle stroke, before the valve body is taken along. Upon closing the adjustment element performs an additional overtravel corresponding to the idle stroke, when the valve body already rests with both its valve disks on the respective valve seats.Type: ApplicationFiled: February 2, 2001Publication date: October 4, 2001Inventor: Rolf-Helmut Sontag
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Patent number: 6286550Abstract: A valve apparatus for preventing the reverse of a thrust force and the generation of oscillation by smoothing a fluid flowing, including: an upper plug and an upper sheet ring which are for adjusting flow of fluid to an upper current path; and a lower plug and a lower sheet ring which are provided on the same axis as the upper plug and the upper sheet ring, and are for adjusting flow of fluid to a lower current path, wherein the generation of oscillation noise can be prevented by making the upper flowing path and the lower flowing path as different shapes, by making the upper and lower plug shape different, by making the plug operation stable with the reverse of the thrust force being prevented by making the fluid amount for the upper flowing path being increased, with the upper and lower sheet ring being formed as one body.Type: GrantFiled: July 10, 2000Date of Patent: September 11, 2001Assignee: Yamatake CorporationInventors: Seiji Yamaki, Kenichi Kawazoe, Hideo Ohtani, Hiroshi Yamamoto, Ryoji Okutsu, Koji Izumi
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Patent number: 6230742Abstract: A two-headed force-balanced poppet valve assembly wherein the spacing of the valve heads along the pintle shaft is directed by the spacing between the valve seats during assembly and wherein at least one of the valve heads is compliantly mounted on the pintle shaft. The valve body has a central chamber separating first and second valves disposed at opposite ends of the chamber for ingress an/or egress of gas or liquid, one of the valves opening into the chamber and the other valve opening out of the chamber. Axial motion of the pintle shaft causes the valves to be opened or closed simultaneously. One of the valve heads is fixed to the pintle shaft and the other valve head is axially slidable on the shaft and is retained thereon by swaging of the shaft. A compression spring is compressedly retained on the shaft inboard of the slidable head to continuously urge the head against the swage, thereby preventing the head from sliding inwardly along the shaft during valve actuation.Type: GrantFiled: October 21, 1999Date of Patent: May 15, 2001Assignee: Delphi Technologies, Inc.Inventor: Raul Armando Bircann