Fluid Pressure Type Patents (Class 137/488)
  • Patent number: 9038659
    Abstract: The invention allows securing greater discharge pressure and flow rate at high revolutions of an engine in order to secure lubrication and cooling, while reducing discharge pressure and flow rate at low and medium revolutions of the engine in order to improve efficiency. The invention includes a housing; a relief valve; a valve passage; a main discharge flow channel; a main relief flow channel; an auxiliary relief flow channel; a solenoid valve mounted on the auxiliary relief flow channel; and a spring. The solenoid valve is controlled so as to switch between communication and shut-off between the auxiliary relief flow channel and the large-diameter passage section in accordance with an increase or decrease in engine revolutions, and oil in the large-diameter passage section is discharged when the shut-off is implemented.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: May 26, 2015
    Assignee: YAMADA MANUFACTURING CO., LTD.
    Inventors: Manabu Watanabe, Junichi Miyajima
  • Patent number: 9027589
    Abstract: An assembly of valve sections includes an inlet section, an outlet section, a working section, and a working section. The working section is a conventional pressure compensated working section. The working section includes a directional control valve, a pressure compensator valve, and a pressure limiter valve. The valves are of integral construction, such that each is an essential part to complete the other. The pressure compensator valve includes a pressure compensator spool movable between an opened position and a closed position in response to a pressure differential across the spool. The pressure limiter valve includes a pressure limiter spool that moves to an open position to change the pressure differential and close the pressure compensator valve when a selected limit pressure is reached.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: May 12, 2015
    Assignee: Parker-Hannifin Corporation
    Inventor: Gregory Coolidge
  • Patent number: 8978692
    Abstract: A pilot valve (2) for controlling operation of a hydraulically-actuated pressure reducing valve, the pilot valve including a housing (4), and a first valve member (15) mounted in the housing for longitudinal movement along an axis relative to the housing and to a second valve member (22) in response to the outlet pressure of the pressure reducing valve. The first valve member is provided with an aperture (20) and the second valve member comprises a closure portion which varies the effective flow cross section of the aperture in accordance with relative longitudinal movement between the first and second valve members. An adjuster (26) controls the relative rotational position of the first and second valve members, the closure portion having a profile such that relative rotation between the first and second valve members causes the closure portion to vary the effective flow cross section of the aperture (20).
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: March 17, 2015
    Assignee: i20 Water Limited
    Inventors: Roger Heron, Andrew Roland Burrows
  • Patent number: 8979064
    Abstract: A positioner includes a shift magnitude calculating portion that calculates a shift magnitude from the equilibrium state of a pilot relay, from an input air pressure that is inputted into the pilot relay and an output air pressure that is outputted from the pilot relay. A control calculating portion determines a control signal from an actual opening signal, an opening setting value, and the shift magnitude from the equilibrium state of the pilot relay that is calculated by the shift magnitude calculating portion, and outputs it to the electropneumatic converter.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 17, 2015
    Assignee: Azbil Corporation
    Inventors: Takashi Nomiyama, Masaki Namikawa
  • Publication number: 20150069828
    Abstract: A pressure regulator, including a housing; a piston axially movably disposed in the housing; a high-pressure chamber; a low-pressure chamber; a regulated-pressure chamber whose pressure biases the piston in a first direction in an axial direction of the housing; a first pilot chamber whose pressure biases the piston in a second direction opposite to the first direction; a second pilot chamber whose pressure biases the piston in the second direction; and a valve mechanism configured such that, by a movement of the piston in the second direction, communication between the regulated-pressure chamber and the high-pressure chamber is permitted while communication between the regulated-pressure chamber and the low-pressure chamber is shut off and such that, by a movement of the piston in the first direction, the communication between the regulated-pressure chamber and the high-pressure chamber is shut off while the communication between the regulated-pressure chamber and the low-pressure chamber is permitted.
    Type: Application
    Filed: May 25, 2012
    Publication date: March 12, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Ueno, Kiyoyuki Uchida
  • Patent number: 8967180
    Abstract: A pilot type pressure regulator has: a primary port to which air is supplied from the outside; and a secondary port discharging air regulated by a main valve body provided to a main valve shaft. A main valve diaphragm abutting on an abutting end surface of the main valve shaft partitions an inner space into a secondary pressure chamber communicating with the secondary port and a pilot pressure chamber to which pilot pressure is supplied. This pressure regulator has an exhaust mechanism exhausting air from the secondary pressure chamber to the outside when pressure of the secondary port exceeds a set value. In the exhaust mechanism, a stopper holding a sealing material in a guide hole is inserted from the side close to a main valve hole, that is, an inner end portion.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: March 3, 2015
    Assignee: Koganei Corporation
    Inventor: Takeshi Yamauchi
  • Publication number: 20150047928
    Abstract: A lubrication system for a tool powered by a drive fluid is provided. The lubrication system includes a reservoir configured to deliver a lubricant and a plunger disposed within the reservoir. The plunger is configured to selectively generate a pilot signal based on a level of the lubricant. The lubrication system further includes a valve having a housing. The housing includes a drive fluid inlet and a drive fluid outlet. The valve also includes a pilot spool configured to move from a neutral position to an actuated position in response to the pilot signal. The valve further includes a main spool selectively actuated by a pressure of the drive fluid to move from a first position to a second position in response to the movement of the pilot spool such that in the second position the drive fluid inlet is in fluid communication with the drive fluid outlet.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: Caterpillar Inc.
    Inventors: Kyle C. Hiner, Lauritz P. Pillers, II
  • Patent number: 8925896
    Abstract: A positioner includes a modeling portion that, having input/output characteristics that model an electropneumatic converter, inputs a control signal from a control calculating portion to calculate an estimated value for an input air pressure that is inputted from the electropneumatic converter into a pilot relay, and a shift magnitude calculating portion that calculates a shift magnitude from the equilibrium state of the pilot relay, from the estimated value for the input air pressure, which is calculated by the modeling portion, and the output air pressure that is outputted from the pilot relay. The control calculating portion determines the control signal from an actual opening signal, an opening setting signal, and the shift magnitude from the equilibrium state of the pilot relay, and outputs it to the electropneumatic converter.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: January 6, 2015
    Assignee: Azbil Corporation
    Inventors: Takashi Nomiyama, Masaki Namikawa
  • Publication number: 20140367616
    Abstract: A safety means for protecting a plant section located on the pressure side of a jet compressor connected with a propellant system against the exceedance of an admissible pressure, comprising a controlled safety valve actuated by external energy, whose control means measures is connected with the plant section to be protected via at least one pressure tapping line, wherein the safety valve is arranged such that upon exceedance of the pressure in the protected plant section it can vent propellant from the propellant system.
    Type: Application
    Filed: February 21, 2013
    Publication date: December 18, 2014
    Applicant: L'AIR LIQUIDE, SOCIÉTÉ ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCÉDÉS GEORGES CLAUDE
    Inventors: Alexander Roesch, Dieter Ulber, Ulrich Wolf
  • Patent number: 8910656
    Abstract: A fluid controller is disclosed, having a body unit, a fluid controlling valve, pressure sensors, and a casing. The fluid controlling valve is attached to a component part attachment face of the body unit. The pressure sensors are attached to the component part attachment face so that the pressure sensing surfaces thereof are positioned substantially perpendicular to the component part attachment face and substantially parallel to the longitudinal direction. On the lateral walls of the casing, the inner surfaces thereof are arranged to be uneven, so that such sections facing the fluid controlling valve and the pressure sensors are arranged to be thin sections, whereas at least a part of such a section that does not face the fluid controlling valve and the pressure sensors is arranged to be a thick section that is thicker than the thin sections.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: December 16, 2014
    Assignee: HORIBA STEC, Co., Ltd.
    Inventor: Tadahiro Yasuda
  • Publication number: 20140360599
    Abstract: A fluid pressure regulating unit, comprises a fluid inlet port, a fluid outlet port, a valve comprising a movable valve part, wherein the movable part comprises at least one fluid pressure balancing means and wherein the at least one pressure balancing means comprises a tapered surface, and a main valve biasing means. The main valve biasing means biases said valve in the direction of an open position. An auxiliary valve biasing means is provided, biasing the valve in the direction of a closed position. Wherein essentially every surface part, being in fluid connection to the fluid inlet port and having a surface normal at least partially in parallel to the moving direction of the moving part of the valve, is balance by a balancing surface part.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Inventor: Soeren Kristoffersen
  • Publication number: 20140345701
    Abstract: Electrohydraulic pilot control means (1) for a hydraulic device which can be a proportional directional valve, an adjusting pump or an adjusting motor, which pilot control means contains two proportionally acting pressure control valves (3) and is provided with a control block (2) which accommodates the hydraulic valve parts (4) in holes and to which the associated proportional magnets are flange-connected, wherein the proportional magnets have a common electrical plug connection (5) and wherein the two proportional magnets (3) are joined to form an assembly by being encapsulated with plastic, the said assembly being fastened to the control block (2) and, in this case, being precisely oriented relative to the valve components (4), which are accommodated in the control block, by means of positioning aids which act perpendicular to the movement direction of armatures.
    Type: Application
    Filed: October 9, 2012
    Publication date: November 27, 2014
    Applicant: THOMAS MAGNETE GMBH
    Inventors: Jürgen Schonlau, Jens Krallmann, Harald Geis, Marc Leinweber, Thomas Zastrau, René Schulz
  • Patent number: 8869825
    Abstract: A flow rate control device comprises a regulator that adjusts the pressure of a fluid to be supplied, a plurality of narrowed pathways arranged in parallel on the downstream side of the regulator, and an open/close section that switches a predetermined narrowed pathway amongst the plurality of narrowed pathways between an open position and a closed position. One of the pathways can be an open narrowed pathway arranged on the downstream side of the regulator and another can be an opened/closed narrowed pathway arranged downstream of the regulator in parallel with the open narrowed pathway. In this case, the open/close section that switches the opened/closed narrowed pathway between as open position and a closed position.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: October 28, 2014
    Assignee: CKD Corporation
    Inventors: Kazuhiro Sugata, Takashi Kato
  • Patent number: 8857456
    Abstract: Methods and apparatus utilize a rate of drop in pressure upstream of a gas flow controller (GFC) to accurately measure a rate of flow through the GFC. Measurement of the gas flow through the many gas flow controllers in production use today is enabled, without requiring any special or sophisticated pressure regulators or other special components. Various provisions ensure that none of the changes in pressure that occur during or after the measurement perturb the constant flow of gas through the GFC under test. A pressure regulator is coupled to a gas source. The GFC is positioned downstream of the pressure regulator. A pressure transducer is measuring pressure in a volume between the pressure regulator and the GFC. Techniques are provided for increasing the pressure in the volume.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 14, 2014
    Assignee: Pivotal Systems Corporation
    Inventors: Joseph R. Monkowski, Jialing Chen, Tao Ding, James MacAllen Chalmers
  • Patent number: 8851106
    Abstract: A disclosed gas supplying apparatus includes a pressure controller that reduces a primary pressure thereby providing a secondary pressure greater than a process pressure at which a predetermined process is performed and less than the atmospheric pressure in a secondary pipe; a pressure sensor that measures a pressure in the secondary pipe; a first open/close valve provided in the secondary pipe; an open/close valve controller that opens or closes the first open/close valve; a pressure comparator that compares the pressure measured by the pressure sensor in the secondary pipe with a first set pressure that is greater than the process pressure by a predetermined pressure; and a controller that outputs a signal to the open/close valve controller thereby closing the first open/close valve, when the pressure comparator determines that the pressure in the secondary pipe is less than the first set pressure.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: October 7, 2014
    Assignee: Tokyo Electron Limited
    Inventor: Tsuneyuki Okabe
  • Publication number: 20140216024
    Abstract: A brake valve is insertable into a working line of a hydrostatic travel drive. The brake valve has a main stage with a first port connected to a variable displacement pump of the drive system and a second port connected to a motor of the drive system. The main stage has a slide piston positionable in a valve bore. In a freewheeling position, a connection is maximally open with minimal throttling between the two ports. In pressure-reducing positions, a regulable, throttled connection is open from the second to the first port to brake the motor. In pressure-limiting positions, a regulable, throttled connection is open from the first to the second port to begin to throttle a pressure medium flow from the variable displacement pump to a pressure protection mechanism. The positions lie on a center line of the main stage along which the slide piston is movable.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 7, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Karl Krug-Kussius
  • Patent number: 8783284
    Abstract: A fluid supply system includes a fluid supply source, a first valve unit, a second valve unit, a first pressure detector, a second pressure detector, a third pressure detector, and a controller. If the pressure detected by the third pressure detector is less than a shutoff pressure at a timing of starting supply of fluid from the fluid supply source, the controller calculates a pressure equalization time from a timing at which opening of a pilot valve is completed to a timing at which a main valve starts closing, based on the pressures detected by the first pressure detector, the second pressure detector and the third pressure detector, sets a valve-open waiting time based on the pressure equalization time, and controls opening of the second valve unit upon elapse of the valve-open waiting time after controlling opening of the first valve unit.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: July 22, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Koichi Kato, Koichi Takaku, Saneto Asano, Hiroyasu Ozaki, Taneaki Miura
  • Patent number: 8776890
    Abstract: A tool that is usable in a well and may include an operator, a switch, a resilient device and an indexer. The switch may be configured to selectively communicate a first force to the operator, thereby actuating the tool. The resilient device may exert a second force. The indexer may cycle through a sequence of positions in response to alternating between the second force and a third force. The sequence includes a predetermined position configured to actuate the switch, thereby communicating the first force to the operator to actuate the tool.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: July 15, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Arin Basmajian, Brad Swenson, John R. Whitsitt
  • Publication number: 20140182694
    Abstract: A system and method for automatically performing start-up and overpressure relief functions in association with a primary fluid carrier such as, for example, a liquid handling pipeline or tank. The system includes a main valve for primarily exhausting air from the system as it fills with a liquid. A start-up pilot device is also provided for exhausting air from the system upon start-up, but prior to the main valve opening. Finally, an overpressure pilot device is provided to relieve overpressure situations during normal operation.
    Type: Application
    Filed: October 30, 2013
    Publication date: July 3, 2014
    Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.
    Inventors: Bruno Jean Michel Cheron, Garrett Winston, Douglas J. Scheffler
  • Publication number: 20140174562
    Abstract: A system for hydraulically managing fluid pressure between selected set points includes a pilot control system operably coupled to a main valve. The pilot control system includes at least one fluid conduit, a variable orifice assembly, and a control pilot valve apparatus. Fluid is passed through a fixed orifice and into a first chamber of the control pilot valve apparatus. Fluid is passed through the variable orifice of the variable orifice assembly and into a second chamber of the control pilot valve apparatus. The main valve is hydraulically opened or closed in response to a pressure differential between the first and second chambers of the control pilot valve apparatus so as to manage fluid pressure downstream of the main valve between the selected upper and lower set points.
    Type: Application
    Filed: March 3, 2014
    Publication date: June 26, 2014
    Applicant: CLA-VAL CO.
    Inventor: Robert Folk
  • Publication number: 20140166130
    Abstract: An anti-surge valve opens or closes a path depending on a negative pressure formed at an intake manifold, and includes an operating unit movable in a direction in response to the negative pressure, a spring means provided to push the operating unit in a direction opposite to the moving direction of the operating unit in response to the negative pressure, a spring mounting portion for mounting the spring means, and a diaphragm disposed to cover an outer surface of the operating unit. The diaphragm may be formed in a substantially hollow cylindrical shape and include a circumference portion formed along a circumference of an opened top surface of the diaphragm, a coupling portion formed along a circumferential direction from an outer end of the circumference portion, and a side portion extended substantially vertically from an inner end of the circumference portion, and has substantially uniform outer and inner diameters.
    Type: Application
    Filed: July 31, 2013
    Publication date: June 19, 2014
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Young Soo Jin, Kyung Woo Lee, Kyu Seok You, Woojin Lee, Sukyong Song
  • Patent number: 8733391
    Abstract: A pressure control valve is provided, which includes a stopper having a flow path for preventing damping that is provided in a contact portion that is adjacent to an inner flow path of a main piston so that hydraulic fluid in the main piston is smoothly drained through a gap between stopper contact surfaces.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: May 27, 2014
    Assignee: Volvo Construction Equipment AB
    Inventor: Man-Seuk Jeon
  • Publication number: 20140137956
    Abstract: Provided is a hydraulic control valve in which a center bypass passage is not blocked, but is unloaded when a swing and an arm are operated at the same time to prevent the pressure in a hydraulic pump from being increased.
    Type: Application
    Filed: June 27, 2011
    Publication date: May 22, 2014
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Jin-Wook Kim
  • Patent number: 8714188
    Abstract: The water hammerless opening device comprises an actuator operating type valve installed on the fluid passage, an electro-pneumatic conversion device to supply the 2-step actuator operating pressure Pa to the afore-mentioned actuator operating type valve, a vibration sensor removably fixed to the pipe passage on the upstream side of the actuator operating type valve, and a tuning box to which the vibration detecting signal Pr detected by the vibration sensor is inputted, through which the control signal Sc to control the step operating pressure Ps? of the afore-mentioned 2-step actuator operating pressure Pa is outputted to the electro-pneumatic conversion device, and with which the 2-step actuator operating pressure Pa, of the step operating pressure Ps? which makes the vibration detecting signal Pr nearly zero, is outputted from the electro-pneumatic conversion by adjusting the control signal Sc.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 6, 2014
    Assignees: Fujikin Incorporated
    Inventors: Tadahiro Ohmi, Kouji Nishino, Masaaki Nagase, Ryousuke Dohi, Nobukazu Ikeda, Ryutaro Nishimura
  • Patent number: 8701703
    Abstract: The present invention comprises a method and apparatus for controlling gas flow via a gas shut-off valve assembly. In at least one embodiment, the assembly is configured to drive its shut-off valve from an open position to a closed position, in response to detecting a valve closure condition. The assembly in one or more embodiments operates as an intelligent node in an AMR network, and it interprets a received closure command as a closure condition. Additionally, or alternatively, the assembly detects abnormal operating conditions as the closure condition. Advantageously, the assembly performs initial closure verification, based on detecting movement of the valve into the closed position, and performs subsequent closure verification, based on monitoring downstream gas pressure. In the same or other embodiments, the assembly provides enhanced stand-alone reliability and safety by incorporating one or more valve clearing/cleaning routines into its operations.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: April 22, 2014
    Assignee: Sensus USA Inc.
    Inventors: Tim Scott, Dirk Steckmann, Daniel W. Peace, Doug Vargas
  • Publication number: 20140090724
    Abstract: A fluid regulating device includes a regulator valve, an actuator and a pilot regulator valve assembly. The pilot regulator valve assembly provides a pressure load to a surface of a diaphragm of the actuator in response to changes in downstream pressure being applied to the opposite surface of the diaphragm. An upper cavity of the pilot regulator valve assembly is in fluid communication with a control cavity of the actuator, allowing both the actuator diaphragm and the pilot regulator valve assembly diaphragm to simultaneously sense pressure variations within the cavities. As the downstream pressure varies, the diaphragms of both the actuator and the pilot regulator valve assembly displace to regulate the downstream pressure and the pilot regulator valve assembly maintains a load pressure. The regulator further includes a balanced regulator valve applying a balancing force to offset a force of upstream pressure on a balanced valve plug.
    Type: Application
    Filed: October 1, 2012
    Publication date: April 3, 2014
    Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.
    Inventors: Jason Scott Mevius, James Chester Hawkins, Paul Richard Anderson
  • Patent number: 8684028
    Abstract: A fuel quality traceable and remote system for monitoring and controlling fuel characteristics during transport from a fuel supply to a supplied device is provided. The system includes one or more subsystems that include at least one sensor monitoring the characteristics of the fuel. The sensor operably sends the data relating to the characteristics to a data register-transmitter which sends the data to a base station that uploads the data to a remote server. The remote server is remotely accessible by a user. The system can also generate warning messages to warn a user when the characteristics are outside a tolerable range. Further, the system can automatically or manually interrupt fuel transport when the characteristics are outside a tolerable range.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: April 1, 2014
    Assignee: Pecofacet (US), Inc.
    Inventor: Camilo Vazquez Pérez
  • Publication number: 20140076425
    Abstract: A pneumatic switch is provided for the pneumatic control of process control components, such as valves and compressors. The pneumatic switch utilizes a slide bar operationally connected to a waggle arm to control valves, which control the introduction of compressed gas to the process control components.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 20, 2014
    Applicant: KIMRAY, INC.
    Inventor: William David Filler
  • Publication number: 20140069528
    Abstract: A fluid flow regulator adapted to be inserted into a conduit and inflated to form a leak tight sealing contact with the interior wall of the conduit. The fluid flow regulator includes a toroidal inflatable member mounted on a cylindrical annular mount which attaches to a flow-through pipe. The fluid flow regulator also includes a fluid flow control valve within the inner portion of the toroidal inflatable member which can be opened and closed to control the flow of fluid from the reservoir through the conduit.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Inventors: Leslie Dale Ware, Orlin Dale Ware
  • Publication number: 20140034154
    Abstract: The present invention relates to a valve assembly, the valve assembly comprising: a valve body having a first pressure chamber and a second pressure chamber, wherein the pressure of the first pressure chamber is lower than that of the second pressure chamber, and the pressure of the second pressure chamber is discharged to the first pressure chamber in response to the change of the pressure of the first pressure chamber; a blocking device arranged between the first pressure chamber and the second pressure chamber; and a valve stem arranged in the valve body with one end movably contacting the blocking device; and a diaphragm connected to the valve stem and adjacent to or arranged above the first pressure chamber; wherein when the pressure of the first pressure chamber is changed, the diaphragm forces the valve stem to move by sensing the pressure change of the first pressure chamber.
    Type: Application
    Filed: July 22, 2013
    Publication date: February 6, 2014
    Applicant: FISHER JEON GAS EQUIPMENT (CHENGDU) CO., LTD.
    Inventor: Le Wang
  • Publication number: 20140021777
    Abstract: The disclosure relates to a fluidically controlled pressure switching valve for a vehicle brake system including a valve chamber, which is arranged in a valve interior and into which an inlet opening and an outlet opening open, and a valve closing body, which is movable in the valve interior and which comprises a piston, defining a first piston surface and a second piston surface, and including a closing element. The valve closing body is movable in accordance with a pressure difference between a pressure acting on the first piston surface and a pressure acting on the second piston surface, against the force of a setting spring arranged in the valve interior, between a closed position, in which a fluid connection between the inlet opening and the outlet opening is interrupted, and an open position, in which the fluid connection between the inlet opening and the outlet opening is open.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 23, 2014
    Inventors: Michael Dinerman, Andrej Gardt
  • Patent number: 8631819
    Abstract: A gas supply system includes a receiver assembly, a gas storage vessel coupled to the receiver assembly, a main poppet positioned at an end of the gas storage vessel and sealing the gas storage vessel when the main poppet is closed, a pilot poppet positioned in the main poppet and sealing the gas storage vessel when the pilot poppet is closed, and a chamber positioned behind the main poppet, wherein when the pilot poppet opens, gas from the gas storage vessel is released into the chamber to exert pressure on the main poppet to open the main poppet.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: January 21, 2014
    Assignee: Ausco, Inc.
    Inventors: Joseph R. McKee, Kenneth Bram
  • Publication number: 20140007952
    Abstract: A control valve for an indirectly acting compressed-air brake of a rail vehicle includes a pneumatic relay valve for controlling a brake cylinder pressure via a pilot-control circuit for generating a temporally defined pilot-control pressure for the proportional activation of the relay valve, wherein, connected upstream of the pilot-control circuit, there is provided a device for generating the braking and release times of the compressed-air brake, wherein the device for generating uniform braking and release times of the compressed-air brake has mechanisms for realizing a volume flow with constant pressure change for the compressed-air supply and the de-aeration of the pilot-control circuit.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 9, 2014
    Applicant: Knorr-Bremse Systeme Fur Schienenfahrseuge GMBH
    Inventor: Christian KRAUTH
  • Publication number: 20130333775
    Abstract: Provided is an automatic gas purge valve system including a normally closed gas discharge faucet configured for discharging gas at substantially high flow rates, and an automatic valve unit configured for selectively generating a flow pulse to displace the gas discharge faucet into its open position.
    Type: Application
    Filed: March 13, 2012
    Publication date: December 19, 2013
    Applicant: A.R.I. FLOW CONTROL ACCESSORIES LTD.
    Inventor: Meir Shoval
  • Publication number: 20130333803
    Abstract: A pressure regulator valve arrangement may include first and second regulator valves for closing a fluid passage in the event of over-pressure. The valve members may each have pressure ports for sensing the pressure, and the ports may be located downstream of the valve members to minimise interaction between the valves.
    Type: Application
    Filed: July 11, 2013
    Publication date: December 19, 2013
    Inventor: Christopher Mouskis
  • Publication number: 20130287609
    Abstract: An arrangement for throttling a fluid flow includes a throttle element arranged so as to influence a flow cross section in a fluid duct. The throttle element has a resiliently elastic disc-shaped basic body which is arranged with a top side and a bottom side between at least two supports in the fluid duct. The body is arranged in such a way that the flow cross section can be variably adjusted as a function of a pressure difference between the top side and the bottom side of the resiliently elastic disc-shaped basic body. At least one support bears against the top side of the resiliently elastic disc-shaped basic body, and at least one support bears against the bottom side of the resiliently elastic disc-shaped basic body.
    Type: Application
    Filed: July 6, 2011
    Publication date: October 31, 2013
    Applicant: Robert Bosch GMBH
    Inventors: Reiner Fellmeth, Juergen Haecker, Oliver Gaertner, Heiko Jahn, Marc Zimmermann, Wolfgang Schuller, Harald Hermann, Rolf Stotz, Daniel Gosse
  • Publication number: 20130276901
    Abstract: A flow control device for control of fluid flow through a tubular member comprises a control chamber having a piston disposed therein, where the piston is moveable from an open piston position to a closed piston position by the application of a first fluid pressure, and a valve chamber having a valve therein, where the valve is moveable from a closed valve position to an open valve position by the application of a second fluid pressure. A seal preventing fluid flow through the control chamber into the tubular member is formed in the closed piston position, and a flow path through the valve chamber and into the tubular member is formed in the open valve position.
    Type: Application
    Filed: March 4, 2013
    Publication date: October 24, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Luke William Holderman
  • Publication number: 20130276915
    Abstract: A directional valve for controlling an actuator by a pressurized medium, including: a pressure port; a work port; a tank port; a spool moving axially inside the directional valve; a first position of the spool, in which the spool tends to be set, and a second position, to which the spool can be moved by a pilot control force and in which the spool opens the flow of pressurized medium from the pressure port to the work port. The directional valve further includes a feedback chamber in which the pressure generates a feedback force effective on the spool and opposite to the pilot control force. In its second position, the spool guides the pressure of the work port to the feedback chamber, and in the second position, the directional valve generates a feedback force proportional to the pressure of the work port, moving the spool to shut off the flow.
    Type: Application
    Filed: January 31, 2012
    Publication date: October 24, 2013
    Applicant: PARKER HANNIFIN MANUFACTURING FINLAND OY
    Inventor: Tommi Liukkunen
  • Publication number: 20130269795
    Abstract: A fluid controller is disclosed, having a body unit, a fluid controlling valve, pressure sensors, and a casing. The fluid controlling valve is attached to a component part attachment face of the body unit. The pressure sensors are attached to the component part attachment face so that the pressure sensing surfaces thereof are positioned substantially perpendicular to the component part attachment face and substantially parallel to the longitudinal direction. On the lateral walls of the casing, the inner surfaces thereof are arranged to be uneven, so that such sections facing the fluid controlling valve and the pressure sensors are arranged to be thin sections, whereas at least a part of such a section that does not face the fluid controlling valve and the pressure sensors is arranged to be a thick section that is thicker than the thin sections.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 17, 2013
    Applicant: HORIBA STEC, Co., Ltd.
    Inventor: Tadahiro Yasuda
  • Publication number: 20130255799
    Abstract: A microfluidic device includes an input source characterized by a source pressure and an input channel in fluid communication with the input source. The microfluidic device also includes an output channel and a valve having an open state and a closed state. The valve is disposed between the input channel and the output channel and is characterized by a static pressure. The microfluidic device further includes a control channel coupled to the valve and characterized by a control pressure. In the closed state, the control pressure is greater than atmospheric pressure.
    Type: Application
    Filed: February 21, 2013
    Publication date: October 3, 2013
    Inventors: Naga Gopi Devaraju, Marc A. Unger
  • Patent number: 8528588
    Abstract: A safety valve drive system is operated such that a safety valve of a nuclear power plant is opened by supplying a driving gas by using a pilot valve at an occurrence of an accident or a transient state to thereby protect a reactor against pressure application. The safety valve drive system is provided with a safety valve drive unit, as a function of actuating the safety valve, and cables. The safety valve drive unit actuates in a manner that the safety valve is opened in response to respective auto-depressurization system actuating signals for two or more segments among respective auto-depressurization system actuating signals for four segments, and is closed if an auto-depressurization system actuating signal for one or less segment among the auto-depressurization system actuating signals for the four segments is received. The cables are connected to the safety valve drive unit and used to transfer the auto-depressurization system actuating signals for the four segments.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: September 10, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Yamazaki, Takeo Shimizu, Yuka Suzuki
  • Publication number: 20130220453
    Abstract: Provided is a fast switching hydraulic pilot valve with hydraulic feedback for quickly and accurately switching between opened and closed positions of the hydraulic valve. The hydraulic valve includes a valve body, a valve bore defined by the valve body, a plurality of valve ports extending through the valve body and into the valve bore, and an actuator. Actuation of the actuator allows for movement of the spool to a first position within the valve bore, thereby providing for one of opening or closing the hydraulic valve. Exposure of the spool to a pressure at an end of the spool proximate the actuator allows for movement of the spool to a second position within the valve bore, thereby providing for the other of opening or closing the hydraulic valve.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 29, 2013
    Applicant: PARKER-HANNIFIN CORPORATION
    Inventor: Parker-Hannifin Corporation
  • Publication number: 20130200166
    Abstract: The present invention relates to the fluid discharge device of a fluid transfer pipe, and to a technology which alters the sectional area of a discharge hole in proportion to the increase or decrease in fluid discharge flow per unit of time so as to maintain a relatively uniform fluid discharge rate from the discharge hole.
    Type: Application
    Filed: September 8, 2011
    Publication date: August 8, 2013
    Inventor: Euntae Park
  • Patent number: 8490645
    Abstract: In a pressure sensor that detects the pressure of liquid flowing in a main fluid flow path, a pressure measuring unit is installed by providing a pressure measuring space at a position branching from a straight-pipe portion of the main fluid flow path, and, in addition, the main fluid flow path and the pressure measuring space are connected with an inlet pipe and an outlet pipe whose pipe diameters are smaller than the main fluid flow path.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 23, 2013
    Assignee: Surpass Industry Co., Ltd.
    Inventor: Hiroki Igarashi
  • Publication number: 20130182737
    Abstract: Continuous mass flow gas replenishment may be implemented in a gas lasing device, such as a gas laser or amplifier, by using a restrictive orifice to bleed one or more gases into a reservoir and/or discharge chamber of the gas laser or amplifier at a predefined mass flow rate. The mass flow rate is a function of the pressure drop across the restrictive orifice resulting from the pressure differential between the depleted gas and the source gas. Thus, gases may be added as needed such that the gas total pressure, as well as the constituent partial pressures, is maintained within a desired range throughout the laser or amplifier fill lifetime. The continuous mass flow gas replenishment may thus make up the lost partial pressure of reactive gases in gas lasing devices in a manner that is less complicated and is less expensive than other continuous flow methodologies.
    Type: Application
    Filed: November 23, 2012
    Publication date: July 18, 2013
    Applicant: IPG MICROSYSTEMS LLC
    Inventor: IPG MICROSYSTEMS LLC
  • Patent number: 8485213
    Abstract: An example loading regulator having an internal relief valve apparatus includes a body having a loading diaphragm disposed between a first casing and a second casing. The first casing and a first side of the loading diaphragm define a first chamber and the second casing and a second side of the loading diaphragm define a second chamber. A relief valve assembly is coupled to the loading diaphragm. The relief valve assembly includes a relief valve seat having an aperture that forms a passageway to fluidly couple the first chamber and the second chamber and a relief valve plug movably coupled to the relief valve seat. The relief valve seat is to move relative to the relief valve plug to a bleed position to allow the flow of fluid between the first chamber and the second chamber in response to an outlet pressure substantially greater than a pressure at which the loading regulator enters a lock-up condition.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: July 16, 2013
    Assignee: Emerson Process Management Regulator Technologies, Inc.
    Inventors: James Chester Hawkins, David Edward Woollums, Tung Kim Nguyen, Gregory Lawrence Foust
  • Patent number: 8479734
    Abstract: An overpressure protection system and method for a hyperbaric chamber having a secondary relief valve in pressure communication with a hyperbaric chamber and configured to actuate upon occurrence of a predetermined pressure condition. Actuation of the secondary relief valve causes an output signal to be delivered to a relay input, which results in actuation of an emergency vent valve to close an oxygen shutoff valve to terminate the flow of oxygen to the chamber. In the preferred embodiment, the predetermined pressure condition occurs when the chamber pressure exceeds the maximum chamber set point plus a predetermined pressure differential. In the preferred embodiment, the relay may be pneumatic or electromechanical.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: July 9, 2013
    Inventor: John Steven Wood
  • Patent number: 8474480
    Abstract: A spool valve is formed from a spool having two adjacent lands of equal cross-sectional dimensions, and a third land having greater cross-sectional dimensions than the other two. The spool reciprocably moves through a bore formed in a housing, so as to open and close fluid communication between selected pairs of ports formed in the housing. The bore includes a first chamber which receives the third land of the spool and has no externally communicating port formed in its walls. The spool valve may be used as a control valve for the actuator of a system valve. As the spool valve begins to actuate, the third land becomes exposed to actuator pressure. The greater area of the third land serves to increase the force applied to the spool valve by the actuator pressure source, enhancing protection from unintended or malicious resetting of the spool.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 2, 2013
    Assignee: BS&B Safety Systems Limited
    Inventor: Gary W. Scantlin
  • Publication number: 20130139909
    Abstract: The present disclosure relates to a hydraulic system with at least two main control valves and with a hydraulic pilot control system for actuating the main control valves, wherein the hydraulic pilot control system and/or the main control valves are constructed such that the at least two main control valves open one after the other.
    Type: Application
    Filed: November 29, 2012
    Publication date: June 6, 2013
    Applicant: LIEBHERR-HYDRAULIKBAGGER GMBH
    Inventor: Liebherr-Hydraulikbagger GmbH
  • Publication number: 20130133760
    Abstract: Flow through pressure sensors for use in fluid chromatography systems include a planar device formed from diffusion bonding of a plurality of metallic sheets and at least one sensing element. The planar device has a top surface, a bottom surface and a flow through channel. A diaphragm formed from a portion of one of the top or bottom surfaces is located adjacent to a sensing region of the flow through channel and is attached to the sensing element. The diaphragm is sized to deflect a distance in response to fluid pressure in the sensing region, which has an internal volume of less than about 25 microliters. The diaphragm and attached sensing element form a pressure sensor that measures strain or deflection of the diaphragm to calculate a pressure within the sensing region.
    Type: Application
    Filed: May 10, 2011
    Publication date: May 30, 2013
    Applicant: Waters Technologies Corporation
    Inventors: Bernard Bunner, Geoff C. Gerhardt, Theodore A. Dourdeville