Fluid Pressure Responsive Patents (Class 137/565.13)
  • Patent number: 10612647
    Abstract: An oil supply system of an automatic transmission for vehicle may include low-pressure oil pump discharging the oil to low-pressure passage; torque converter control valve controlling flow of the low-pressure passage while recirculating some of surplus flow rate and supplying the controlled flow rate to an operating-side chamber of torque converter and downstream valve; torque converter lock-up clutch switch valve supplying the flow rate of the torque converter control valve and circulation flow rate of the operating-side chamber of the torque converter to lubrication passage; torque converter pressure control valve supplying the flow rate to non-operating side chamber of the torque converter; high-pressure oil pump boosting some of the flow rate of the low-pressure passage and discharging the boosted flow rate to high-pressure passage; and line regulator valve supplying the surplus flow rate during control process to the low-pressure passage and supplying the controlled flow rate to high-pressure portion.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 7, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Uk Shin, Minho Chae, Chon Ok Kim, Sun Sung Kwon
  • Patent number: 9328721
    Abstract: Provided is a variable displacement swash plate type compressor including: a lug plate fixed to a driving shaft; and a swash plate combined to the lug plate and whose tilt angle is varied according to rotatory motion, wherein the lug plate includes a protruding portion protruding towards the swash plate, and a rotatory power projection transmitting power for rotating the swash plate is formed at a leading end of the protruding portion through the swash plate. Accordingly, a varying operation between a maximum tilt angle and a minimum tilt angle of the swash plate and a rotatory power transmitting operation for rotating the swash plate are performed at different locations, thereby simultaneously improving the varying operation and the rotatory power transmitting operation of the swash plate.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 3, 2016
    Assignees: DOOWON ELECTRONICS CO., LTD, DOOWON TECHNICAL COLLEGE
    Inventors: Geonho Lee, Tae Jin Lee, Seung Won Lee, Ki Chun Lee, Hyun Jae Kim
  • Publication number: 20150129044
    Abstract: Embodiments of mechanisms for processing a wafer are provided. A method for processing a wafer includes creating an exhaust flow in a fluid conduit assembly that is connected to a process module used for processing the wafer. The method also includes detecting the exhaust pressure in the fluid conduit assembly. The method further includes determining whether the exhaust pressure meets a set point. In addition, the method includes regulating the exhaust flow if the exhaust pressure fails to meet the set point.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: You-Hua CHOU, Shih-Hung CHEN, Jian-Huah CHIOU
  • Publication number: 20150121936
    Abstract: A backflow preventer apparatus comprising an inline solenoid valve configured to shut when de-energized, disposed between a closed system desired to be evacuated and a vacuum pump, wherein the inline solenoid valve and vacuum pump share a common source of electrical power.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 7, 2015
    Inventors: Vincent J. Browning, Mike Heinhorst
  • Publication number: 20150114790
    Abstract: A pump apparatus with a switching valve includes an actuator that is rotationally driven, a pump, a switching valve and a driving power interrupting device. The pump discharges a fluid sucked by rotational driving of the actuator. The switching valve is changed in phase by the rotational driving of the actuator so as to be switchable among a plurality of destinations of the fluid discharged from a pump chamber of the pump. The driving power interrupting device for a valve is switchable between a state where rotational driving power of the actuator is transmitted to the switching valve and a state where the rotational driving power of the actuator is interrupted.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Applicant: JTEKT Corporation
    Inventor: Motoyasu YAMAMORI
  • Patent number: 9004100
    Abstract: The present invention relates to a pump assembly (5) for a supply unit, in particular a tank container (1), comprising: a pump line (51; 51r, l) for conveying a liquid medium between a container (3) and a removal connection, a pump (55) arranged in the pump line (51), and a feed connection (58), which is connected to the pump line (51) via two connecting lines (57). Here the pump (55) acts between the two connecting points (57a) of the connecting lines (57) in the pump line (51). The medium can therefore be delivered as desired directly by the pump (55) between the feed connection (58) and the container (3), between the container (3) and the removal connection (52), or between the feed connection (58) and the removal connection (52). The invention further relates to a fuel supply unit having a pump assembly (5) according to the invention and a container (3).
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: April 14, 2015
    Assignee: WEW Westerwalder Eisenwerk GmbH
    Inventors: Rainer Metz, Thomas Schmidt
  • Publication number: 20150075635
    Abstract: A system actively regulates the fluid pressure entering the pump of a fluid-dispensing system to provide a more uniform fluid flow exiting the pump. The pump is supplied with fluid from a pressurized reservoir (e.g., that is pressurized from an external air source, or by mechanical or electrically-driven pressurization). A pressure sensor monitors the fluid pressure in the fluid supply line between the reservoir and pump. A controller receives this fluid pressure reading as an input to regulate the pressurization of the reservoir. Optionally, a second pressure sensor can be used to monitor the fluid pressure at the pump exit to provide an additional input for the controller.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 19, 2015
    Applicant: GPD GLOBAL, INC.
    Inventors: Christian R. Vega, John W. Kohler, Alvin R. Miller
  • Publication number: 20150075634
    Abstract: A pump assembly includes a pump unit having a centrifugal pump and a variable pump supplying pressurized flow. A fuel control assembly receives flow from the pump unit and includes at least one metering valve and at least one throttling valve. A control for the variable pump receives first and second pressure signals indicative of a pressure differential across the throttling valve, or across the metering valve/throttling valve combination, for altering operation of the variable pump in response to the pressure differential.
    Type: Application
    Filed: May 1, 2013
    Publication date: March 19, 2015
    Inventors: Robert Nyzen, Martin A. Clements
  • Publication number: 20150068606
    Abstract: A subsea system is for uptake and supply of a liquid. The system comprises a storage tank having at least one outlet, a valve assembly, a pump having a high-pressure side and a low-pressure side, and a feed line. The outlet is in fluid communication with a lower internal volume of the tank, and the valve assembly. The low-pressure side of the pump and the feed line are in fluid communication with the outlet, and the valve assembly is arranged on the feed line, and the feed line is bypassing the pump, such that said pump may withdraw liquid from the tank when the valve assembly on the feed line is closed.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 12, 2015
    Applicant: OBS TECHNOLOGY AS
    Inventor: Nils Terje Ottestad
  • Publication number: 20150068624
    Abstract: A pressure switch safety system includes a pressure switch for mounting to a mud pumping system. The pressure switch can be moved from a pressure switch open position to a pressure switch closed position when the pressure within the mud pumping system reaches an excess trigger pressure. The excess trigger is greater than the pressure required to activate a pressure relief valve system of the mud pumping system. An alarm and a timer are actuated when the pressure switch is moved from the pressure switch open position to the pressure switch closed position. The timer has a preset time interval. The system has a mud pump shut down control module that will shut down the mud pumping system after the preset time interval has elapsed.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 12, 2015
    Applicant: Saudi Arabian Oil Company
    Inventor: Eyadah Al-Ruothy Al-Shammary
  • Publication number: 20150041008
    Abstract: A cavitation sense fill system for a dishwasher system is disclosed. The dishwasher system includes a fluid circulation system for circulating water in a tub, wherein the fluid circulation system includes at least one recirculation pump and at least one fill valve. The cavitation sense fill system includes a pressure switch for monitoring an output pressure of the at least one recirculation pump, wherein the pressure switch deactivates the at least one fill valve when the output pressure satisfies at least one predefined criteria.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Inventors: Errin Whitney GNADINGER, Brian WORRASANGASILPA
  • Publication number: 20150034168
    Abstract: Exemplary embodiments of the present disclosure are directed to limiting a rate or pressurization in a reconfigurable pressurized flow system for which different system configurations can have different system volumes. In exemplary embodiments, the system can determine a limit for the rate of pressurization by configuring the system for a closed system rate of pressurization, measuring the closed system rate of pressurization at a set flow rate, and determining a relationship between the closed system rate of pressurization and the flow rate. The system can use the relationship to dynamically set the limit for different flow rates in the system.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 5, 2015
    Inventors: Joshua A. Shreve, Paul Keenan
  • Publication number: 20150027570
    Abstract: A hydraulic pressure supply system may supply low hydraulic pressure generated at a low-pressure hydraulic pump to a low pressure portion through a low-pressure regulator valve, may supply a portion of the low hydraulic pressure to a high-pressure hydraulic pump, and may supply high hydraulic pressure generated at the high-pressure hydraulic pump to a high pressure portion through a high-pressure regulator valve.
    Type: Application
    Filed: December 23, 2013
    Publication date: January 29, 2015
    Applicant: Hyundai Motor Company
    Inventors: Taehwan Wi, Jin Young Hwang, Se Hwan Jo
  • Publication number: 20150020889
    Abstract: An engine fuel system and methods are provided. The engine fuel system includes a supply arrangement for providing an outlet flow of fuel to a bypass metering arrangement. The bypass metering arrangement in turn provides a metered flow of fuel to a parallel metering system including a primary regulated circuit and one or more secondary metering circuits. The bypass metering arrangement is operable to maintain a substantially constant pressure differential across a fuel metering valve thereof, as well as provide the metered flow of fuel in response to downstream pressure demands of the parallel metering system.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 22, 2015
    Applicant: WOODWARD, INC.
    Inventor: Carthel C. Baker
  • Publication number: 20150020888
    Abstract: A fuel pressure regulation system is provided. The fuel pressure regulation system includes a supply arrangement for supplying an outlet flow. A primary metering circuit is provided, an inlet of which receives a first portion of the outlet flow of the supply arrangement, the primary metering circuit comprising a fuel metering valve and a primary pressure regulator. The primary pressure regulator is connected to an outlet of the fuel metering valve. The system also includes at least one secondary metering circuit. The primary pressure regulator is operably connected to the at least one secondary metering circuit to sense a pressure of the at least one secondary metering circuit. The system also includes a bypass regulator connected in parallel with the primary metering circuit and the least one secondary metering circuit such that an inlet of the bypass regulator receives a second portion of the outlet flow of the supply arrangement.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 22, 2015
    Applicant: WOODWARD, INC.
    Inventors: Carthel C. Baker, Michael P. Garry
  • Publication number: 20150000753
    Abstract: A control system for optimizing the flow of fluid from a plurality of pipelines in communication with a resource field includes a sensor array detecting characteristics of the resource field, the plurality of pipelines, and the flow of fluid through the plurality of pipelines. A first manifold assembly and a second manifold assembly each selectively receives the flow of fluid from any of the plurality of pipelines. A controller is provided to be in communication with the sensor array, the first manifold assembly and the second manifold assembly. The controller selectively diverts the flow of the fluid from a first group of the plurality of pipelines to one of the first and the second manifold assemblies, and diverts a second group of the plurality of pipelines to another of the first and the second manifold assemblies, in dependence upon the characteristics being communicated to the controller.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: SITEPP Sistemas y Tecnologia para et Petroleo, S.A. de C.V.
    Inventor: Francisco Morales Ramirez
  • Patent number: 8911217
    Abstract: An abnormality detecting device for a hydraulic system is disclosed. The hydraulic system has a pressure level switching mechanism that adjusts oil pressure in accordance with the operating state of an internal combustion engine. The device includes an oil pressure sensor and a ECU. The oil pressure sensor detects an oil pressure that is adjusted by the pressure level switching mechanism. When the pressure level switching mechanism changes the oil pressure from a first oil pressure level to a second oil pressure level, which is higher than the first oil pressure level, the ECU compares the oil pressure detected by the oil pressure sensor with a determination oil pressure level, which is lower than and close to the second oil pressure level. The ECU determines that there is an abnormality in the hydraulic system if the oil pressure detected by the oil pressure sensor does not change to pass the determination oil pressure level.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Katsuaki Takahashi
  • Patent number: 8893642
    Abstract: In various exemplary embodiments described herein, a system and related method to provide airflow management system in a substrate production tool includes a housing to couple the substrate production tool to a fan filter unit to provide filtered air to the housing, a facility connection to couple the substrate production tool to a reduced pressure exhaust mechanism, a substrate transfer section coupled below the housing and in airflow communication with the facility connection, and a substrate process area coupled to the substrate transfer section by one or more substrate transfer slots. A chamber substantially containing the substrate transfer section and the substrate process area is coupled to the housing to receive the filtered air and to the facility connection to provide an exhaust for excess gas flow. The chamber maintains a low pressure in the substrate process area relative to the substrate transfer section.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: November 25, 2014
    Assignee: Lam Research Corporation
    Inventor: Eric H. Lenz
  • Patent number: 8875498
    Abstract: A pump system that includes a pump, an injector and a regulator with a calculation unit. The regulator controls the pump to pump a liquid through a hose to the injector which opens and closes in response to an injector control signal, the time for an opening and closing cycle being called injector cycle and designated Ts, and the injector's open period being designated ?. The injector has a pressure sensor to measure the pressure of the liquid in the injector and to deliver to the calculation unit a pressure sensor signal representing the pressure amplitude in the injector. The calculation unit calculates the hose's rigidity B as a function of measured pressured amplitudes A in the injector, the injector cycle Ts and the injector's open period ?, and the regulator determines the basis of B the control signal to the pump.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: November 4, 2014
    Assignee: Scania CV AB
    Inventors: Ottmar Raeymaeckers, Anders Larsson, Eva Geijer, Leif Lundin
  • Publication number: 20140318647
    Abstract: A vacuum sizing tank configured to provide controlled fluid flow. A fluid control system and a vacuum sizing tank utilizing electronic controls to create and maintain controllable fluid flow within the tank. Flow meters may measure the flow in and out of the tank to maintain consistency. Temperature meters may measure the temperatures for each of the flows to maintain consistency. An electronic circuit may compare the values with preset values. Any difference between the values may trigger change by varying the voltage applied to a variable speed water pump.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Richard C. Bell, R. Brandon Bell
  • Publication number: 20140311581
    Abstract: An exemplary semiconductor processing system may include a processing chamber and a first pressure regulating device coupled with the processing chamber. A second pressure regulating device may also be coupled with the processing chamber separate from the first pressure regulating device. A first pump may be fluidly coupled with the first pressure regulating device and fluidly isolated from the second pressure regulating device. A second fluid pump may be fluidly coupled with the second pressure regulating device.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 23, 2014
    Applicant: Applied Materials, Inc.
    Inventors: Sergey G. Belostotskiy, Andrew Nguyen, Jonathan Dinh, Ying-Sheng Lin
  • Publication number: 20140261723
    Abstract: The present disclosure relates to a bidirectional valve design that provides for more rapid deflations/evacuation of fluid flow and in one example includes a valve body, a spindle piston movably coupled in a bore of the valve body and an electronically controllable motor that moves the spindle valve between a fluid evacuation position and a fluid fill position. In one example, the spindle piston includes piston structures on ends of a threaded rod. In another example, a mattress system is disclosed that employs the valve and a fluid source to provide quick evacuation of air from a patient support. In another example, the valve is coupled to an alternating pressure block valve which is then coupled to a patient support.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: KAP Medical
    Inventors: Raj Krish Gowda, David Darwin Lewis, Daniel Francis Rosenmayer
  • Publication number: 20140209193
    Abstract: A charged particle beam instrument is offered which has a specimen pre-evacuation chamber. An outflow flow rate adjusting valve (70) adjusts the flow rate of gas exhausted from the specimen pre-evacuation chamber (20) under control of controller (82). The controller (82) for making a decision as to whether the difference between a first pressure in the pre-evacuation chamber (20) before the adjusting valve (70) is controlled to the first degree of opening and a second pressure in the pre-evacuation chamber (20) after the adjusting valve (70) has been controlled to the first degree of opening is greater than a first reference value.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Inventor: Mitsuhide Matsushita
  • Publication number: 20140196804
    Abstract: A hydraulic control arrangement (1) is described having a directional valve (2), a metering pump unit which has at least two metering pumps (3, 4) which are connected hydraulically in parallel and are operable mechanically in parallel, and a shut-off valve (6) in hydraulic connection between two of the at least two metering pumps (3, 4), a pump connection (P) and a tank connection (T) which are connected to said metering pump unit by way of the directional valve (2), and two working connections (L, R) connected to the directional valve (2), a control input (8) of the shut-off valve (6) being connected to the pump connection (P) by means of a control valve. Such a control arrangement should be operated at a high hydraulic pressure and at the same time it should be made sure that the shut-off valve is actuated only when the required high pressure is available.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 17, 2014
    Inventors: Morten Hoeck Petersen, Bendt Porskrog, Nils E. Sevelsted
  • Publication number: 20140166134
    Abstract: Embodiments provided herein describe pumps and methods for pumping fluids. A first fixed valve has a passageway extending therethrough with first and second ends. The first fixed valve is configured to allow fluid flow through the passageway towards the second end thereof and at least partially restrict fluid flow towards the first end thereof. A pumping structure is in fluid communication with the second end of the passageway of the first fixed valve. A second fixed valve has a passageway extending therethrough with third and fourth ends. The second fixed valve is configured to allow fluid flow through the passageway towards the fourth end thereof and at least partially restrict fluid flow towards the third end thereof. The third end of the passageway of the second fixed valve is in fluid communication with the pumping structure and the second end of the passageway of the first fixed valve.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 19, 2014
    Applicant: INTERMOLECULAR, INC.
    Inventor: Peter Satitpunwaycha
  • Publication number: 20140158236
    Abstract: A hydraulic pressure supply system of an automatic transmission for a vehicle may include a low-pressure hydraulic pump receiving oil stored in an oil pan through an input line, generating low hydraulic pressure using the oil, and supplying the low hydraulic pressure to a low pressure portion through a low-pressure line, and a high-pressure hydraulic pump increasing a portion of the low hydraulic pressure to high hydraulic pressure and supplying the high hydraulic pressure to a high pressure portion through a high-pressure line.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 12, 2014
    Applicant: Hyundai Motor Company
    Inventors: Se Hwan JO, Jin Young HWANG, Taehwan WI
  • Publication number: 20140158242
    Abstract: A pressure supply system for a fresh water system is provided. The pressure supply system includes a water reservoir having a bleed air inlet and a water outlet. The pressure supply system also includes a water pump so as to load water, which is loaded with bleed air pressure, with a further pressure downstream until a predetermined nominal operating pressure range is achieved. As a result, the pressure supply system provides an increased redundancy by pressure generator assemblies which are based on different pressure generation principles.
    Type: Application
    Filed: February 7, 2014
    Publication date: June 12, 2014
    Inventors: Axel SCHREINER, Paolo CAVARERO, Ralf MENSHAUSEN, Markus WIRTH, Michael REMPE, Carlos ROSERO
  • Patent number: 8714177
    Abstract: A system is adapted to automatically maintain a desired yield level for a slurry flow. Measurements of the electrical conductivity of a slurry are taken and corrected for the effects of temperature and pressure. The corrected conductivity measurements are used to arrive at a value for system yield. The system automatically determines if the yield is too high or too low relative to a desired level, and controls the rate at which accelerator is added to the slurry in order to increase or decrease yield.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: May 6, 2014
    Assignee: W.R. Grace & Co. -Conn.
    Inventors: Dennis M. Hilton, Karl Taub, Keith Lipford, Philip A. Zanghi
  • Publication number: 20140000756
    Abstract: A pump system including a drive mechanism that provides a pumping force, a primary pump including a first pump cavity, an actuating element in reciprocal relation with the first pump cavity, and an outlet fluidly connected to a reservoir, a force translator that facilitates pump force transfer from the drive mechanism to the actuating element, a pressure regulation mechanism including a reciprocating pump that includes a pump chamber including an inlet manifold fluidly connected to the reservoir, a valve located within the inlet manifold, and a reciprocating element in reciprocal relation with the pump chamber. The pressure regulation mechanism preferably passively ceases force transfer from the drive mechanism to the primary pump based on the pressure of the reservoir.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 2, 2014
    Applicant: Aperia Technologies
    Inventor: Brandon Richardson
  • Patent number: 8613198
    Abstract: A method and apparatus for controlling fluid flow is provided. The valve assembly includes a valve body including a longitudinal axis and a radially inner internal flow passage extending axially between an inlet opening and an outlet opening, a disk selectively positionable to modulate a flow of working fluid through the flow passage, and a radially outer external surface. The valve assembly further includes a first actuator positioned radially outboard of the external surface, a second actuator positioned radially outboard of the external surface, and a first linkage including a first actuator end configured to couple to the first actuator, a second actuator end configured to couple to the second actuator, and a rod end configured to couple to the disk, wherein an actuating force applied from each actuator to each respective actuator end is combined through the first linkage to the rod end.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: December 24, 2013
    Assignee: Unison Industries, LLC
    Inventor: Mark Douglas Swinford
  • Publication number: 20130306159
    Abstract: The invention relates to a unit for simulating the pressure and temperature conditions of an air flow drawn in by a reciprocating internal combustion engine (1) at a height above sea level, corresponding to the operating height of said reciprocating internal combustion engine (1). According to the invention, the unit comprises at least: (a) a radial inward-flow turbine (2) for expanding an air flow towards the pressure and temperature of the air drawn in by the reciprocating internal combustion engine; (b) a first container (4) and (c) a second container (5) connected to the first container (4) by means of at least a connection pipe (7) in order to balance the pressure between the two containers; (d) a centrifugal compressor (3); and (e) a vacuum pump (6) for maintaining a pressure equal to the pressure of the air flow drawn in by the reciprocating internal combustion engine (1).
    Type: Application
    Filed: January 10, 2012
    Publication date: November 21, 2013
    Applicant: UNIVERSIDAD POLITECNICA DE VALENCIA
    Inventors: Francisco Payri González, Jose Maria Desantes Fernández, José Galindo Lucas, José Ramón Serrano Cruz
  • Patent number: 8561627
    Abstract: Method for providing a fluid at a target pressure. In one implementation, the method may include providing a semiconductor solution at a velocity to a supply line through a dispenser, measuring a pressure of the semiconductor solution flowing through the supply line, comparing the measured pressure with the target pressure, and adjusting the velocity based on the results of the comparison.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: October 22, 2013
    Assignee: Intermolecular, Inc.
    Inventor: Rajesh Kelekar
  • Publication number: 20130233397
    Abstract: A directional flow valve in a cardiovascular prosthesis test system includes a regurgitant flow passage. Forward flow from a pump through the valve is unrestricted and allowed to pass freely through the directional flow valve. Regurgitant flow is allowed across the directional flow valve to reduce a negative pressure gradient across the prosthetic device. The volume of regurgitant flow is controllable by changing a size of the regurgitant flow pathway.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 12, 2013
    Inventors: Benjamin McCLOSKEY, Craig WEINBERG
  • Patent number: 8517040
    Abstract: A closed-loop system includes a pump driving a fluid through a series of conduits. A control system is included that minimizes pressure fluctuations in a bootstrap reservoir to maintain a desired minimum pressure at the pump inlet. Moreover, the control system reduces a maximum system pressure by reducing the magnitude of pressure fluctuations encountered by the bootstrap reservoir.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: August 27, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Kurt J. Doughty
  • Publication number: 20130213486
    Abstract: A system for regulating a pressure of a piston on a bed in a flow through column system, where the flow through column system includes a piston pressure chamber in communication with the piston and an inlet line and an outlet line in communication with the bed. A pump has an inlet in communication with a supply of hydraulic fluid. A forward pressure reference communicates with the inlet line. A forward pressure regulator has a reference inlet in communication with the forward pressure reference and an inlet in communication with the pump. A switching valve communicates with the piston pressure chamber, and also has a inlet in communication with the outlet of the forward pressure regulator. A back pressure reference communicates with the outlet line. A back pressure regulator has an inlet in communication with the outlet of the switching valve, a reference inlet in communication with the back pressure reference and an outlet in communication with the supply of hydraulic fluid.
    Type: Application
    Filed: February 11, 2013
    Publication date: August 22, 2013
    Inventor: MICHAEL BRANDT
  • Publication number: 20130186472
    Abstract: A method of controlling a valve includes detecting a supply pressure at a fluid source and detecting a first port pressure at a first side of a piston. A controller actuates the valve from a closed position to a first open position when the supply pressure is in excess of the first port pressure. Thereafter, the controller actuates the valve to the closed position when the supply pressure is less than the first port pressure.
    Type: Application
    Filed: January 14, 2013
    Publication date: July 25, 2013
    Applicant: EATON CORPORATION
    Inventor: EATON CORPORATION
  • Patent number: 8485222
    Abstract: Systems and methods are provided for preventing oil migration in an engine lubrication system. The system includes a gearbox, a shaft disposed at least partially in the gearbox, an oil reservoir in flow communication with the gearbox, an oil supply pump in flow communication with the oil reservoir and coupled to the shaft, an oil scavenge pump coupled to the shaft and configured to pump oil from the gearbox, and an oil cooler in flow communication with and disposed between the oil scavenge pump and the oil reservoir. The system also includes a bypass drain line disposed between the oil source and the oil supply pump, a drain valve disposed in the bypass drain line configured to close when the pressure is above a predetermined pressure, and a check valve disposed between the oil supply pump and the gearbox configured to open when the pressure is above the predetermined pressure.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: July 16, 2013
    Assignee: Honeywell International Inc.
    Inventors: Anthony P. Restivo, Frank J. Zupanc
  • Publication number: 20130153045
    Abstract: A method of and apparatus for controlling pressure in a process chamber having a continuous gas inlet flow and a continuous gas outlet flow comprising providing a pulsed valve at a gas outlet, a pressure gauge, and a programmable controller and varying the pulse rate of the pulsed valve, wherein either the open time or closed time, or both open and closed times, is lengthened or shortened, depending on whether the gauge pressure is above or below the programmed setpoint.
    Type: Application
    Filed: July 14, 2010
    Publication date: June 20, 2013
    Inventor: Daniel J Vestyck
  • Publication number: 20130133766
    Abstract: A hydraulic pressure control apparatus for an automatic transmission may include an oil tank, a first hydraulic pump fluid-connected with the oil tank for generating a first hydraulic pressure, a second hydraulic pump fluid-connected with the first hydraulic pump for generating a second hydraulic pressure higher than the first pressure, a torque converter and a lubrication portion fluid-connected to a first low pressure supply line to receive the first hydraulic pressure, a first high pressure supply line fluid-connected to the second hydraulic pump and to a powertrain, a switching valve bifurcated from the first low pressure supply line and fluid-connected to the first hydraulic pump and both the torque converter and the lubrication portion, and a feedback line fluid-connected to the first high pressure supply line to the switching valve so as to selectively open or close the switching valve according to the second hydraulic pressure.
    Type: Application
    Filed: June 18, 2012
    Publication date: May 30, 2013
    Applicant: Hyundai Motor Company
    Inventors: Jin Young Hwang, Se Hwan JO
  • Publication number: 20130133765
    Abstract: A fuel pump assembly may include a housing and a fuel pump within a fuel pump cavity. The fuel pump may include a motor, a pumping element driven for rotation by the motor, a pump body that maintains the position of the pumping element relative to the motor and the housing, and a flexible seal. The seal may be disposed between the pump body and the housing to provide a fluid tight seal between them. A portion of the seal may be disposed radially outwardly of a distal end of the pump body to radially position the pump body within the fuel pump cavity and a portion of the seal may be disposed axially outwardly of the distal end of the pump body to axially position the pump body within the fuel pump cavity.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.
    Inventors: Kevin L. Israelson, Douglas W. Salowitz, JR., David L. Speirs
  • Publication number: 20130048096
    Abstract: A pump system that includes a pump, an injector and a regulator with a calculation unit. The regulator controls the pump to pump a liquid through a hose to the injector which opens and closes in response to an injector control signal, the time for an opening and closing cycle being called injector cycle and designated Ts, and the injector's open period being designated ?. The injector has a pressure sensor to measure the pressure of the liquid in the injector and to deliver to the calculation unit a pressure sensor signal representing the pressure amplitude in the injector. The calculation unit calculates the hose's rigidity B as a function of measured pressured amplitudes A in the injector, the injector cycle Ts and the injector's open period ?, and the regulator determines the basis of B the control signal to the pump.
    Type: Application
    Filed: April 1, 2011
    Publication date: February 28, 2013
    Inventors: Ottmar Raeymaeckers, Anders Larsson, Eva Geijer, Leif Lundin
  • Patent number: 8297311
    Abstract: Apparatus for establishing and controlling a low pressure gas mixture in a vacuum enclosure (8) comprises at least one secondary pump (9) of the molecular, turbomolecular, or hybrid type, followed by at least one primary pump (10), with first control and adjustment means (22) such as a regulation valve (24) for controlling and adjusting the total gas pressure of the mixture of gases in the vacuum enclosure (8) as a function of a total pressure setpoint (27). The apparatus further comprises second control and adjustment means (28) such as a second regulation valve (29a) downstream from the secondary pump (9). The second regulation valve (29a) is controlled as a function of a delivery pressure setpoint (32) to modify the delivery pressure of the secondary pump (9) and thus to adapt its pumping capacity in selective manner.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: October 30, 2012
    Assignee: Alcatel
    Inventors: Jean-Pierre Desbiolles, Michel Puech
  • Publication number: 20120261010
    Abstract: The present disclosure relates to a hydraulic system for construction machinery, which is applied to construction machinery provided with a steering unit for controlling steering of equipment, and a main control valve for controlling operating of a work tool, and includes: a main pump for discharging working fluid supplied to the steering unit and the main control valve; a load sensing pressure sensor for sensing a load sensing pressure of the steering unit; a priority valve installed in a supply passage for the working fluid discharged from the main pump, for dividing and supplying the working fluid discharged from the main pump to the steering unit and the main control valve, to correspond to the load sensing pressure; an auxiliary pump for supplementing working fluid to the supply passage supplying the working fluid divided by the priority valve to the steering unit; an electric motor for operating the auxiliary pump; and a controller for operating the electric motor when the load sensing pressure is great
    Type: Application
    Filed: November 3, 2010
    Publication date: October 18, 2012
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventor: Jeung Hwa Kim
  • Publication number: 20120211089
    Abstract: An apparatus and method for simulating production conditions in hydrocarbon-bearing reservoirs, as an example, by flooding of core samples from such reservoirs, are described. Full recirculation flow measurements permit several fluids (for example, crude oil, brine, and gas) to be simultaneously injected into core samples having varying dimensions. Accurate and stable back pressures are maintained at total flow rates of as high as 200 cc/min., for a large range of fluid viscosities. Accurate and stable net overburden pressures relative to pore pressure are also maintained, thereby simulating the formations at depth. Core samples from formations may also be investigated using the apparatus and method hereof, for carbon dioxide sequestration potential, as another example.
    Type: Application
    Filed: December 13, 2011
    Publication date: August 23, 2012
    Applicant: University of Wyoming
    Inventor: Mohammad Piri
  • Publication number: 20120167993
    Abstract: A system and method for controlling fuel pressure in a fuel delivery system. The system includes a fuel pump and an inlet control valve. The inlet control valve is operated to a closed state by an electrical signal applied to the inlet control valve. The electrical signal includes a pull-in portion of the electrical signal that is applied to the inlet control valve having a pull-in time interval that is varied based on the fuel pressure. By varying the pull-in time interval to control fuel pressure, electrical energy consumed and acoustic noise generated by the fuel delivery system are reduced.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: WILLIAM J. FEDOR, III, CHARLES A. IANNONE
  • Patent number: 8206123
    Abstract: A system is adapted to automatically maintain a desired yield level for a slurry flow. Measurements of the electrical conductivity of a slurry are taken and corrected for the effects of temperature and pressure. The corrected conductivity measurements are used to arrive at a value for system yield. The system automatically determines if the yield is too high or too low relative to a desired level, and controls the rate at which accelerator is added to the slurry in order to increase or decrease yield.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: June 26, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Dennis M. Hilton, Karl Taub, Keith Lipford, Philip A Zanghi
  • Publication number: 20110308650
    Abstract: A flow control system is disclosed for use with a micropump for pumping a fluid to be administered through a catheter. The flow control system includes a first body portion, a membrane and a second body portion. The first body portion has a membrane-receiving inner surface, an inlet aperture in fluid communication with the micropump, and a mating surface disposed about the membrane-receiving inner surface and configured to mate with a mating surface of the second body portion. The membrane has a reinforcement annulus configured to be received by the first body portion membrane-receiving inner surface and a domed portion oriented to be movable from a closed position, in sealable communication with the inlet aperture, and an open position, in spaced apart relation from the inlet aperture. The membrane is oriented and sized to be biased in the closed position.
    Type: Application
    Filed: June 30, 2011
    Publication date: December 22, 2011
    Inventors: Farid Amirouche, Matthew Cantwell
  • Publication number: 20110297259
    Abstract: An oil pump system can include a housing defining a pocket for an oil pump, a cavity, and a pump outlet passage connecting the pocket to the cavity. Low and high pressure relief passages can be defined by the housing for selectively fluidly coupling the cavity to a pressure relief area. A pressure relief valve positioned in the cavity can comprise first and second ends, first and second internal bores, and a slot in communication with the first internal bore. A biasing member positioned in the second internal bore can biasing the valve to a first position. The valve can translate to a second position aligning the slot with the low pressure relief passage to selectively provide low pressure relief to the oil pump, and can translate to a third position aligning the slot with the high pressure relief passage to selectively provide high pressure relief to the oil pump.
    Type: Application
    Filed: June 6, 2011
    Publication date: December 8, 2011
    Inventor: Walter W. Sundquist
  • Patent number: 8066030
    Abstract: Disclosed is a fuel conveying device including a valve housing in which a pressure release valve and a non-return valve are arranged parallel to one another, the pressure release valve having a first inlet, which downstream of a valve seat opens into a valve chamber in which a valve body is movably arranged and which is in fluid connection with a second inlet for the non-return valve via a first outlet. The device improves the control response of the pressure release valve by providing the first outlet at the periphery of the valve chamber and in the axial direction with respect to a valve axis such that when the pressure release valve is open the flow from the valve chamber into the second inlet is a substantially radial flow.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: November 29, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Peter Schelhas, Andreas Herforth, Zdenek Liner, Michael Dufek, David Krenovsky
  • Publication number: 20110259452
    Abstract: Disclosed is a differential pressure volume flow air sampler that measures temperature in a collection cavity, differential pressure between the measured ambient pressure and air pressure in a collection cavity. These parameters are used to calculate the volume air flow across a collection disk using a processor which adjusts a blower to maintain a substantially constant volume air flow through said air sampler from the surrounding atmosphere.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Inventor: Michael S. Carter