Line Condition Change Responsive Patents (Class 137/220)
  • Patent number: 9766632
    Abstract: A device having pressure independent control and balancing valves, suitable for use in a hydronic system, comprises a seat, a plug having an upstream surface and a downstream surface, and a piston, wherein the seat, plug and piston are aligned coaxially, a controller determines the size of a first flow restriction between the upstream surface of the plug and the seat, the piston is operable to move in response to differential pressure across the first restriction and a predetermined force, the position of the piston relative to the downstream surface of the plug determining the size of a second flow restriction thereby in use maintaining a substantially constant differential pressure across the first restriction.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 19, 2017
    Assignee: IMI HYDRONIC ENGINEERING INTERNATIONAL SA
    Inventors: Peter Volovec, Slavko Lah, Gregor Bozic
  • Patent number: 9739290
    Abstract: A system is disclosed wherein a pressure pulse dampener is in fluid communication with a compressed fluid. The pulse dampener being operable for reducing pressure pulsations within the fluid. In some embodiments a check valve can be in fluid communication with the pulse dampener to prevent reverse flow of the compressed fluid.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 22, 2017
    Assignee: Ingersoll-Rand Company
    Inventors: Michael John Lucas, James Li
  • Patent number: 9551433
    Abstract: A combined balancing and control valve suitable for use in a hydronic system is provided, including a chamber enclosing a plug (6, 10, 16, 15), a seat (13) and a cam and pinion mechanism (20-28) for adjusting the separation of the plug (6, 10, 16, 15) and the seat (13). Pressure ports (42, 43) are included for monitoring the rate of fluid flow across the separation. The cam and pinion mechanism provides a motion transformation (20-27) operable by an actuator (28) to control the motion of the valve plug (6, 10, 16, 15). The valve plug motion provides a favorable change in conductance of the valve for a given change in the actuator position. The actuator (28) is calibrated in increments which correspond to incremental changes in the conductance.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: January 24, 2017
    Assignee: TA HYDRONICS S.A.
    Inventor: Peter Volovec
  • Patent number: 9409652
    Abstract: The present invention refers to a dual pressure regulation system to ensure a proper pressure regulation during the Aerial REFUELING operations with Hose and Drogue systems. More specifically is directed to dual redundant fuel pressure regulation systems. The pressure regulator system comprises two pressure regulators (10, 20) located in series and a control element (30) for controlling the movement of both regulators operatively connected downstream (34) the second pressure regulator (20) such that the movement of the pressure regulators (10, 20) is independently controlled by the control element (30) according to the delivery pressure downstream the second regulator (20).
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: August 9, 2016
    Assignee: EADS Construcciones Aeronauticas S.A.
    Inventor: Martin Espinosa Sanchez
  • Patent number: 9279502
    Abstract: A first valve member has an axis and a first seat surface with a tapered contour facing axially downstream. A second valve member has a second seat surface with a tapered contour facing axially upstream. The second valve member has a closed position in which the second seat surface abuts the first seat surface, and has an open position in which the second seat surface is spaced axially downstream from the first seat surface. The second valve member further has a terminal end portion configured as a nose cone. The nose cone may be located entirely downstream of the second seat surface, and may have a cavity with a drain opening.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 8, 2016
    Assignee: FIVES BRONX, INC.
    Inventors: Edward Dray, David E. Harhay, Naethan Eagles, Christopher Scott Eddinger
  • Patent number: 9091353
    Abstract: A gas charging check valve uses a first elastic element and a second elastic element, which respectively provide elastic force on a top valve and a bottom valve. The top valve and the bottom valve correspond to each other as a set. When the gas charging device is moved to apply an external force on a movement control portion of the gas charging check valve, the second elastic element removes the elastic force applied on the bottom valve to reduce the required gas inject force for a valve formed by the top valve and the bottom valve, so that the gas can more easily enter the valve.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: July 28, 2015
    Assignee: Gudeng Precision Industrial Co, Ltd.
    Inventor: Hsaio-Chia Lo
  • Patent number: 8966897
    Abstract: An internal combustion engine having an air intake section (2) which has an air intake line (3), having an exhaust section (4) which has an exhaust line (5), and having at least one exhaust-gas turbocharger (6) which has a compressor (7) in the air intake line (3) and a turbine (8) arranged in the exhaust line (5), characterized by a controllable bypass arrangement (9) which has an air supply line (10) which, as viewed in the flow direction (R) of the intake air, opens into the air intake line (3) down-stream of the compressor (7).
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: March 3, 2015
    Assignee: BorgWarner Inc.
    Inventor: Thomas Hahn
  • Patent number: 8931504
    Abstract: The present invention applies to the hydraulic axial piston regulating valve with a linear position sensor, consisting of the valve body (1) and the central part (2), around which the fluid flows when the valve is opened, the hydraulic cylinder (3) with the piston (4) and the piston rod (5), to which the valve regulating piston (12) is firmly fastened. The linear position sensor (8) is placed inside the hydraulic cylinder, and in the electric version of the valve, the sensor with the magnetostrictive waveguide (20) is used. The present invention applies also to the utilization of the linear response of such valves for the regulation purpose using various driving aids; as e.g. electro-hydraulic drive, pneumatic drive or autonomous drive using the energy of the fluid flowing in the pipeline.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: January 13, 2015
    Assignee: Hydromat-Inzenjering D.O.O.
    Inventor: Slavko Canjuga
  • Patent number: 8910653
    Abstract: A valve assembly is provided and includes a poppet disposed to regulate a pressure of a fluid flowing through a pathway defined between the poppet and a valve body, a drive element configured to modulate a pressure of a servo fluid to thereby control a position of the poppet relative to the valve body and an actuator body coupled to the poppet and configured to deliver a supply fluid to the drive element from a first cavity defined between the poppet and the actuator body and to deliver the servo fluid from the drive element to a second cavity defined between the actuator body and the poppet. The poppet defines a filter through which fluid flows from the pathway into the first cavity as the supply fluid.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 16, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Christopher McAuliffe, Bruce R. Schroder
  • Patent number: 8763631
    Abstract: A metering valve includes a valve body, a flow tube, an orifice plate, a central flow body, and a mover. The valve body has an inlet and an outlet. The flow tube is carried for axial movement in slidable and sealing engagement with the valve body at an inlet end and an outlet end. The orifice plate has an outlet. The central flow body is provided on an upstream end of the orifice plate and has an annular seal configured to seat into engagement with the outlet end of the flow tube when the flow tube is moved to a downstream position. The central flow body also includes a central, protruding flow diverter upstream and central of the annular seal. The mover is provided in the valve body and is configured to carry the flow tube for displacement of the output end toward and away from the central flow body.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: July 1, 2014
    Assignee: Precision Engine Controls Corporation
    Inventors: E. Joseph Mares, Nathan Todd Miller, Mark Robert Huebscher
  • Patent number: 8733737
    Abstract: In accordance with one embodiment of the present invention, a seal for a surge relief valve includes a) a valve housing having a flow inlet and a flow outlet; b) an annular retainer for coupling a plug to an interior of the valve housing, the retainer having a first end oriented toward the flow inlet and a second end remote therefrom; c) the plug having a first end oriented toward the flow inlet and a second end remote therefrom, the plug having a mating junction for coupling with the second end of the retainer, the plug having a first countersink, a second countersink, a first lip defined between the first and second countersinks and a second lip adjacent the second countersink; and d) an annular plug seal having a first end oriented toward the flow inlet and a second end remote from the first end for mating with the second countersink and a lip that abuts the second end of the retainer.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: May 27, 2014
    Assignee: SPX Corporation
    Inventors: Mark Lewandowski, Raj Shah, Phi Nguyen
  • Patent number: 8544493
    Abstract: A water-hammer proof and silent check valve comprises a shell (1), a spring (9), a flow guide body (10) and a cowl (11). The flow guide body (10) is provided with flow blocking boards (4, 6) which project from the outer surface of the flow guide body (10) and are capable of rotating around installation shafts (3, 7). A plurality of flow blocking boards are arranged in the flow passage in the axial direction of the valve, so that most part of pressure energy and kinetic energy are undertaken by the flow blocking boards by grading when liquid flows back to the valve, thus ensuring that the water hammer with large energy is divided into multiple water hammers with relatively smaller energy so as to greatly reduce the inner stress of valve bearing parts.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: October 1, 2013
    Assignee: Guangdong Liansu Technology Industrial Co., Ltd.
    Inventors: Hongbin Huang, Jiyue Yang
  • Patent number: 8381764
    Abstract: A check valve (1) includes a casing (2) having a valve seat (10) formed in a flow path and a valving element assembly (21) disposed in the casing. A top (23) of a valving element (22) is received in a large-diameter portion (38) of a through-hole (37) in a support member (35) of the valving element assembly. A narrow flow path portion (68) is formed between an arcuate portion (46) of an outer periphery (45) of the support member and a second enlarged-diameter portion (11) of the casing. The narrow flow path portion (a first portion of an intermediate flow path) is communicated with a back-pressure chamber (50) defined in the support member at the rear of the top of the valving element through a communicating passage (67) including a gap (66) between the outer periphery of the valving element and the inner periphery of the large-diameter portion and grooves (27) on the rear surface of the top of the valving element.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: February 26, 2013
    Assignees: Shinshu University, Nippo Valve Company Ltd.
    Inventors: Masaharu Matsubara, Yuichi Takeda
  • Patent number: 8365764
    Abstract: Minimum pressure valve having a housing (13) with an inlet (14) and an outlet (15) and in which has been provided a valve body (21) which is pushed against a seating (30) round the inlet (14) in a closed position, and whereby the valve body (21) is situated at a distance from the above-mentioned seating (30) in an open position, such that the inlet (14) is connected to the outlet (15), whereby the valve body (21) is provided in a sliding manner in a valve casing (17) confining, together with the valve body (21) an inner space (36) that is connected to the inlet (14) via a duct (35).
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 5, 2013
    Assignee: Atlas Copco Airpower, Naamloze Vennootschap
    Inventor: Kristof Adrien Laura Martens
  • Patent number: 8281810
    Abstract: A dry valve is provided for a sprinkler system, including a housing including a valve body having an inlet end and a valve cover having an outlet end. A prime chamber housing is disposed within the housing and defines a prime chamber. A prime piston is disposed within the prime chamber and is movable between a closed position seated against a valve seat and an open position received within the prime chamber. A check valve diaphragm assembly is disposed within the housing and disposed against the prime chamber housing in a closed position and spaced from the prime chamber housing in an open position.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: October 9, 2012
    Assignee: The Viking Corporation
    Inventors: Shawn J. Feenstra, Vinh B. Hoa
  • Patent number: 8136543
    Abstract: Axial flow control valves are described herein. An example axial flow control valve described herein includes a valve body defining a passageway between an inlet and an outlet that is substantially parallel to a fluid flow path at the inlet and the outlet of the valve body. The example control valve includes a cartridge assembly removably coupled to the valve body and disposed within the passageway of the valve body between the inlet and the outlet. The cartridge assembly is substantially axially aligned with the passageway and includes a motor to operate the axial flow control valve between a first position to prevent the flow of fluid between the inlet and the outlet and a second position to allow the flow of fluid between the inlet and the outlet.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: March 20, 2012
    Assignee: Fisher Controls International, LLC
    Inventor: Lonnie Oscar Davies, Jr.
  • Patent number: 8113228
    Abstract: A suction valve for a pipe line in which a medium flows is provided, whereby the flow can be closed and regulated and whereby back flow prevented. The suction valve includes a movable a closing mechanism (3) placed in a valve house (1), and an opposed counter face in the valve house. The closing mechanism (3) can be moved by the pressure of the medium flow by forming the closing mechanism (3) to be as piston parts or cylinder parts in a working cylinder. The pressure of the medium flow used for moving the closing mechanism (3) is led into the closing mechanism through an outlet valve (8,9,10), which outlet valve is fitted inside the closing mechanism (3).
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: February 14, 2012
    Assignee: Polarteknik PMC Oy Ab
    Inventor: Vesa Ropponen
  • Patent number: 7640944
    Abstract: A flow responsive valve for a flow metering system comprising a fluid meter having a minimum measuring flow threshold. The valve is shiftable between an open position at flow rates above the minimum measuring flow threshold, and a pressure pulsating position depending on pressure differential over an inlet port and an outlet port of the valve. The pressure pulsating position alters between a closed position essentially prohibiting fluid flow therethrough at flow rates below the minimum measuring flow threshold, and an open position admitting fluid flow into the supply line at a measurable flow rate above the minimum measuring flow threshold.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: January 5, 2010
    Assignee: A.R.I. Flow Control Accessories Agricultural Cooperative Association Ltd.
    Inventors: Avraham Zakai, Jonathan Bar-Or
  • Patent number: 7628016
    Abstract: A method of effecting multi-stage supercharging in internal combustion machines comprising a supercharging system, wherein fresh air is first routed through a low-pressure compressor. At least a portion of the compressed air stream is compressed further in a high-pressure compressor, and the rest of the fresh air compressed in the low-pressure compressor is routed around the high-pressure compressor via a compressor bypass. All the fresh air is ultimately delivered to the internal combustion engine. The compressor bypass is opened or closed by a self-actuating valve in dependence on the differential pressure, the compressor bypass opening as soon as the pressure downstream from the high-pressure compressor is lower than the pressure upstream of the high-pressure compressor.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: December 8, 2009
    Assignee: Robert Bosch, GmbH
    Inventor: Guenther Vogt
  • Patent number: 7588047
    Abstract: A compressor bypass valve for multistage supercharging an internal combustion engine equipped with a supercharging system. The valve includes a displacement body accommodated in a valve housing. The displacement body is divided into a first displacement part and a second displacement part. The first displacement part, facing the upstream side, moves to close or open the bypass in response to a pressure differential.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: September 15, 2009
    Assignee: Robert Bosch, GmbH
    Inventor: Guenther Vogt
  • Publication number: 20080173762
    Abstract: An aircraft refuelling system of an aircraft is provided. The refuelling system comprises a refuelling connector (34) mounted as part of the aircraft and configured to detachably connect to the fuel outlet (2) of a fuel supply apparatus separate from the aircraft, and a fuel pressure regulator (36) having an inlet in communication with a fuel inlet (35) of the refuelling connector (34) and having an outlet in communication with refuelling pipework (39) of the aircraft. The fuel pressure regulator (36), regulates the pressure of fuel in the refuelling pipework (39) when fuel is being passed into the refuelling pipework (39) from the fuel inlet (35) of the refuelling connector.
    Type: Application
    Filed: March 23, 2007
    Publication date: July 24, 2008
    Applicant: Airbus UK Limited
    Inventor: Michael Crowley
  • Publication number: 20080135104
    Abstract: A high pressure storage and delivery system having a fail-safe vacuum actuated valve is provided. In particular, through the innovative design of the vacuum actuated check valve, the system can accommodate up to three times the volume of product in similar size cylinders.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 12, 2008
    Inventors: Scott Lawrence Cooper, Lloyd Anthony Brown, Douglas Charles Heiderman, Brian Michael Meredith
  • Patent number: 7040339
    Abstract: A suction inlet valve for fire truck pumpers has a male body portion and a female body portion, the portions defining a chamber therein. A cone-shaped valve element is connected to a valve stem which has a cam body thereon with a cam slot therein. The cam slot receives a projection from an operating shaft which projects out of the housing. The operating shaft has an operating handle thereon which is exposed to the environment and conducts heat from the chamber. If there is water in the chamber, there is an increased chance of water in the cam slot freezing disabling operation of the valve. To drain water away from the cam slot, a drain is provided in the male body portion for draining water from the chamber.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: May 9, 2006
    Assignee: Hydra-Shield Manufacturing, Inc.
    Inventor: Roy Istre, Jr.
  • Patent number: 6915813
    Abstract: A check valve including an outer body having a cylindrical inner bore and a shuttle within the inner bore which is arranged with an upstream, middle and downstream portion that each engage with a sliding fit the inner bore of the outer body being such that, when in a closed position, the middle portion engages with a flexible seal a sealing engagement the inner bore and when in an open position it is arranged that the liquid will flow through a passage around the middle portion which passage includes at the least a path through the outer body.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 12, 2005
    Assignee: Hydro-Flo Holdings PTY LTD
    Inventor: Frederick Kobes
  • Publication number: 20040182438
    Abstract: A check valve including an outer body having a cylindrical inner bore and a shuttle within the inner bore which is arranged with an upstream, middle and downstream portion that each engage with a sliding fit the inner bore of the outer body being such that, when in a closed position, the middle portion engages with a flexible seal a sealing engagement the inner bore and when in an open position it is arranged that the liquid will flow through a passage around the middle portion which passage includes at the least a path through the outer body.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 23, 2004
    Applicant: HYDRO-FLO HOLDINGS PTY LTD
    Inventor: Frederick KOBES
  • Patent number: 6752168
    Abstract: A system for controlling the working conditions for mechanical pumps supplying associated devices with pressure fluid via a pipe system. A valve means (25) is placed between at least one of the pumps and an appurtenant device supplied by the pump, which valve means is arranged to open only when the pump has started up, and by adjustment of its flow cross-section seeks to maintain its downstairs pressure at a value (P3) which is predetermined from the specifications of the pipe system and said device, but gives priority to restrict its flow cross-section so that counterpressure of the pump does not fall below a given minimum value (P2) determined from the characteristic properties of the pump. The valve means is a regulating valve (25) operating in accordance with this functional principle.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: June 22, 2004
    Assignees: Aker Maritime ASA, Ottestad Breathing Systems AS
    Inventors: Nils T Ottestad, Finn Wichstrom
  • Patent number: 6742539
    Abstract: A flow control valve has a housing having a fluid inlet at one fitting end and fluid outlet at another fitting end, and a control body supported within the housing by support structure bridging between the control body and the housing such that for flow of fluid through the valve from the inlet to the outlet is along fluid paths symmetric with respect to an axis of the control body, the control body and support structure being streamlined so as not to interfere substantially with flow. At least one valve member is carried by the control body in an orientation for being shifted by driven movement along the axis relatively toward and away from the fitting end for control of fluid passing through the fitting end in response to an actuator within the control body. At least one port extends through the support structure for communicating with the actuator and providing for control of the actuator.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: June 1, 2004
    Assignee: Innovative Controls
    Inventor: Jerry L. Lyons
  • Patent number: 6684895
    Abstract: An improved fluid control valve includes a valve body with an inlet and an outlet. A sealing member is connected to the valve body conformed to seal the inlet and form a pressure chamber. A push rod is connected to the sealing member and a sleeve is provided which encompasses the push rod. A piston, forming an equalization chamber, is connected to the sleeve and to the push rod so that when the piston moves in one direction the sealing member is moved in the opposite direction until camover when both move in the same direction.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: February 3, 2004
    Inventors: Joseph Licari Sclease, Gary Lynn Williams
  • Publication number: 20020074038
    Abstract: Aircraft air control valve apparatus for controlling the flow of pressurized aircraft engine bleed air. The control valve apparatus includes a hollow housing with two end portions with each end portion having an aperture located therein with one end portion being connected to a source of pressurized aircraft engine bleed air. A shut-off valve is located in one end portion of the hollow housing for starting and stopping the flow of pressurized aircraft engine bleed air through the hollow housing and a modulating valve is located in the other end portion of the hollow housing for modulating the flow of pressurized aircraft engine bleed air through the hollow housing. The shut-off valve and the modulating valve are operated by the use of pressurized aircraft engine bleed air.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Inventors: Paul J. Dziorny, Benjamin D. Sellers
  • Publication number: 20020005217
    Abstract: A flow control valve has a housing having a fluid inlet at one fitting end and fluid outlet at another fitting end, and a control body supported within the housing by support structure bridging between the control body and the housing such that for flow of fluid through the valve from the inlet to the outlet is along fluid paths symmetric with respect to an axis of the control body, the control body and support structure being streamlined so as not to interfere substantially with flow. At least one valve member is carried by the control body in an orientation for being shifted by driven movement along the axis relatively toward and away from the fitting end for control of fluid passing through the fitting end in response to an actuator within the control body. At least one port extends through the support structure for communicating with the actuator and providing for control of the actuator.
    Type: Application
    Filed: May 24, 2001
    Publication date: January 17, 2002
    Inventor: Jerry L. Lyons
  • Patent number: 6279594
    Abstract: An upright cylindrical valve body has an inlet port axially aligned with an outlet port. A valve member is retained for reciprocal movement into and out of engagement with a valve seat axial aligned with fluid flow between the inlet and outlet ports. A relief port positioned adjacent to the outlet port exhausts fluid that remains in the valve above the valve seat after it is closed. The valve member is normally maintained in a closed position. Fluid flow into the inlet port actuates the valve. A portion of the fluid flowing through the valve chamber is diverted through passageways by a pair of remote controlled solenoid valves to open the valve. When it is desired to close the valve, the solenoid valves are actuated to evacuate fluid internally within the valve so that the valve member is returned to a closed position. A relief valve in the outlet port exhausts fluid from the upper end of the valve when the fluid pressure falls below a preselected magnitude.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: August 28, 2001
    Assignee: Beitzel Corporation
    Inventors: Donald D. Beitzel, Robert Yaste
  • Patent number: 6230734
    Abstract: A flow-rate controller comprises hollow casing 1, main 2 and additional 3 outlet branch pipes, and outlet branch pipe 4. Piston-type slide valve 13 with skirt 14 is located between front 5 and rear 10 guide bushes. The starting fuel component flows through the controller via branch pipe 3, hole 22, inlet space 7, holes 24 and 23, passage space 8, outlet orifices 11 and outlet branch pipe 4. It is followed by the main fuel component supplied to the system through the controller via branch pipe 2, open nonreturn pressure control valve 27, open front orifices 9, passage space 8, outlet orifices 11 and outlet branch pipe 4. Constant rates of flow of both the starting and the main fuel components through the controller are assured by the aforesaid original design slide valve and by the corresponding channels.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: May 15, 2001
    Assignee: Otkrytoe Aktsioneirnoe Obschestvo “Nauchnoproizvodstvennoeobiendinene “Energomash” Imeni Akademika V.P.Glushko”
    Inventors: Mikhail Jurievich Grebnev, Boris Mikhailovich Gromyko, Viktor Antonovich Kartysh, Igor Ivanovich Khrenov
  • Patent number: 6132191
    Abstract: A series of check valves are disclosed for use in a scroll compressor which control and dampen the closing of the check valve to reduce noise during rapid pressure fluctuations encountered during normal operation and to control loss of gas in a discharge passage. In one check valve, a reed valve or poppet valve is employed to control the motion of a main valve to a closed position. In another check valve, suction pressure is used to reduce the closing force of the main valve. In another check valve, the main refrigerant flow passes through a converging, diverging passage to create a relatively low pressure chamber to reduce the closing force of the main valve. In another check valve, the reverse flow from the discharge plenum either does not act to close the valve or acts on a reduced surface area.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: October 17, 2000
    Assignee: Scroll Technologies
    Inventors: Jason Hugenroth, Dennis Janda, Gene Fields
  • Patent number: 5921276
    Abstract: An axial recess is formed in the downstream end of the diffuser body. An annular tail member is mounted on the downstream end of the valve piston. The tail member retracts into the recess when the piston is in the closed position and provides an extension of the diffuser body when the piston is in the open position.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: July 13, 1999
    Assignee: Stream-Flo Industries, Ltd.
    Inventors: Tony M. Lam, Keith D. Farquharson
  • Patent number: 5715857
    Abstract: A multi-use flow control and pressure reducing valve includes an inlet chamber, an intermediate chamber, and an outlet chamber. An hydraulic gate member forms the outlet chamber and controls communication between the intermediate chamber and outlet chamber to control flow of fluid through the valve. The hydraulic gate also establishes a control or actuating chamber for receiving fluid therein to control the position of the hydraulic gate. The valve is separable in the axial direction into at least two parts for removal, cleaning, or repair with the two parts coupled and held together during use preferably by an easily operated coupling device.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: February 10, 1998
    Inventor: Ajit Singh Gill
  • Patent number: 5540252
    Abstract: A variable area inline valve receives a pressurized fluid and regulates the amount of pressurized fluid flowing through the valve. The valve includes a piston assembly which slides longitudinally along a center line of the valve to control a variable flow area through which the fluid passes to the outlet of the housing. To stabilize the valve, the valve includes an axial feedback passage through which outlet fluid enters and is fed back to a first cavity to provide a retarding force to the piston movement. This fluid feedback assembly allows a proportional amount of the outlet fluid pressure to act on the piston assembly and stabilize the valve by providing a positive spring rate to the valve (i.e., negative feedback). The size of both the feedback orifice and a vent orifice which vents the first cavity to ambient sets the gain of the feedback.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: July 30, 1996
    Assignee: United Technologies Corporation
    Inventor: Eugene R. Bruun
  • Patent number: 5435337
    Abstract: An inline control valve (10-10F) having a fixed diverter member or plug (34-34F) positioned centrally of the flow passage (30-30F) and a sleeve (40-40F) mounted for movement between open and closed position relating to the plug (34-34F). One embodiment (FIGS. 2-4) includes a solenoid (72) for moving the sleeve (40) to an open position. A radially expandable metal seat ring (50) shown carried by the sleeve (40) in FIG. 4 seals against the plug (34) by radial expansion of the seat ring (50) relative to the sleeve (40). Another embodiment shown in FIGS. 5 and 6 includes a separate source of pressurized fluid (72A) for movement of the sleeve (40A) to an open position. The inline control valve (10F) is utilized in the embodiment of FIGS. 11-14 in combination with an indicator member (47F) to indicate an excessive fluid pressure.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: July 25, 1995
    Assignee: Fike Corporation
    Inventor: Willard E. Kemp
  • Patent number: 5375621
    Abstract: A diaphragm- and spring-less check valve for gaseous media comprising an inlet housing (41) having a sealing edge (51), an outlet housing (11) and a closure body (30) disposed in between the housings, which is guided so as to be axially (14) movable and capable of being impressed bilaterally in any desired position and/or state of the valve, wherein the closure body (30) is moveable exclusively on the basis of a differential pressure between inlet (41) and outlet housing (11) in the blocking position against the sealing edge (51) and in the through-put position the sealing edge (51).
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: December 27, 1994
    Assignee: EMS-Inventa AG
    Inventor: Heinz U. Gaehwiler
  • Patent number: 5314299
    Abstract: A speed governor for a pneumatic power tool which comprises a housing (10) with pressure air supply means (16-18) and an air turbine (20) including a turbine wheel (22) drivingly coupled to an output spindle and a number of air nozzles (25) for directing motive pressure air onto the turbine wheel (22), wherein the speed governor comprises a flow controlling valve element (43) associated with an activation piston (44) for adjusting the valve element (43) in response to a control pressure obtained in a pressure sensing opening (34) located opposite an idle running nozzle (28) downstream of the turbine wheel (22).
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: May 24, 1994
    Assignee: Atlas Copco Tools AB
    Inventor: Rolf A. Jacobsson
  • Patent number: 5141420
    Abstract: A scroll type hermetic compressor is disclosed which incorporates an improved disc type check valve in the discharge conduit exiting from the compressor shell. The check valve operates to prevent return of high pressure refrigerant which may cause reverse movement of the orbiting scroll upon shut down of the compressor.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: August 25, 1992
    Assignee: Copeland Corporation
    Inventor: Koman B. Nambiar
  • Patent number: 5104038
    Abstract: An apparatus wherein a thermostat is mounted within a sleeve, with the sleeve positionable as a junction between a plurality of hoses, or alternatively, the sleeve formed with a sealing boss, with the sealing boss extending radially beyond the sleeve, and including an "O" ring to effect sealing of the organization within a single unitary fluid conducting hose.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: April 14, 1992
    Inventor: Pete Cruces
  • Patent number: 5080122
    Abstract: A valve body having an opening closed by a cover through which may be mounted or demounted a non-return obturator which is mobile along an upstream-downstream axis, the obturator being installed by first securing a first member to the valve body and then securing the obturator and its spring and then securing a second member.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: January 14, 1992
    Assignee: Socla
    Inventor: Bernard Neuzeret
  • Patent number: 4911196
    Abstract: An inline check valve (10) has a valve body (12) with an enlarged diameter valve chamber (14) in which a cage assembly (44) is mounted. Cage assembly (44) has a cylindrical body (48) fitted about the outlet flow passage (18) and projecting in unsupported cantilevered relation within the valve chamber (14). The free end portion (56) of body (48) mounted a piston check valve member (50) thereon for relative reciprocal movement between open and closed positions. Upon a reversal of fluid flow, the entire rear face for the check valve member (50) is exposed to fluid pressure from the outlet flow passage (18), and the check valve member (50) immediately moves to closed position under the influence of spring (86) and fluid pressure. Cage assembly (44) may be inserted within and removed from the inlet fluid passage (16) upon removal of the inlet seat (36) and retainer (42).
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: March 27, 1990
    Assignee: Kemp Development Corporation
    Inventor: Willard E. Kemp
  • Patent number: 4747426
    Abstract: A check valve or non-return valve has a valve body (9) which is connected with a piston (15) by a rod (14). The piston is guided by a sleeve (17) mounted inside an inner housing of the valve. The sleeve is provided with two radially extending openings (21, 22) which are axially spaced from each other. These openings provide communication between the inner space in the sleeve and the inner space in the inner housing (1) depending on the position of the piston (15). This structure permits a rapid closing of the valve, whereby nevertheless, the pressure shock caused by the rapid movement of the valve body is substantially reduced by these openings causing a pressure build-up inside the sleeve with a respective damping action on the valve body.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: May 31, 1988
    Assignee: Mokveld Valves B.V.
    Inventor: Henri H. Weevers
  • Patent number: 4732189
    Abstract: A fast opening plug valve especially for release of high pressure gas. The plug has an internal chamber and is held in the closed position by the pressure of gas within this chamber which acts on a fixed wall. The opening stroke is driven by valve inlet pressure upon release of gas from the plug chamber to a dump chamber. Flow from the plug chamber to the dump chamber is choked towards the end of the valve opening cycle to decelerate the plug. Plug acceleration at the start of the opening cycle is commenced prior to opening to minimize the opening period. Release of pressure from the plug chamber may be initiated by action of a slide valve and linked to rise of valve inlet pressure. The valve has application in wind tunnels.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: March 22, 1988
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Terence V. Jones, Peter J. Loftus
  • Patent number: 4681130
    Abstract: A combined pressure-regulated and check fluid flow valve is disclosed which is adapted to be installed directly on the pipeline and serve also as a protection against water hammer in case of sudden pressure failure in the line. The valve is installed within a housing configured as a uniform extension of a pipeline to which the valve is connected. The structure consists mainly of a freely reciprocable differential piston associated with a fixed differential cylinder, a freely reciprocable valve member at the inlet side and a freely reciprocable piston at the outlet side of the housing.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: July 21, 1987
    Assignee: "AR-KAL" Plastics Products (1973)
    Inventor: Elhanan Tabor
  • Patent number: 4651768
    Abstract: The flow controlling valve, particularly mounted in a pipe flange structure, comprises a cylindrical housing, a flow passage whose cross section is controllable, a valve seat, and a valve member and at least one auxiliary valve mounted in the housing. The valve seat is formed as a mushroom member whose mushroom head has an edge with an adjacent seating surface and whose stem is connected to at least one supporting cross piece extending across the flow passage. The valve member is a spring-loaded hollow piston guided in the housing whose interior space forms the flow passage which is mounted with its inner edge positionable on the seating surface of the mushroom head. The auxiliary valve has a spring-loaded auxiliary stopper member with an associated auxiliary valve seat which controls a flowing medium branching from the main flow by a metering element.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: March 24, 1987
    Inventor: Alfred Epe
  • Patent number: 4638832
    Abstract: A nonreturn piston slide valve has an inner housing operatively held in an outer housing and a spring operated piston operatively held in the inner housing for cooperation with a valve seat. A flow passage is formed between the piston face and the valve seat when fluid flows through the valve in the intended direction. When the fluid flow direction is reversed, the valve closes. In order to prevent so-called flutter movements of the piston the piston side wall is provided with a number of apertures through which the inner volume of the inner valve housing may communicate with the fluid flow. The apertures move with the piston to facilitate rapid opening of the valve during a first portion of a valve opening piston stroke. During a second end portion of a valve opening piston stroke the apertures pass into the inner housing thereby braking or dampening the movement of the piston at the end of the stroke to prevent slamming.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: January 27, 1987
    Assignee: Mokveld Valves bv.
    Inventor: Nicolaas J. Mokveld
  • Patent number: 4637428
    Abstract: A fluid flow control valve which is responsive to the pressure drop occurring across the valve in order to maintain a substantially constant volume of fluid flow regardless of the pressures appearing at the upstream and downstream sides of the valve has a valve casing with an inner face that widens outwardly from a fluid inflow end to a fluid outflow end, and a valve member which is convex towards the fluid inflow end of the casing and is axially movable relatively to the casing in order to vary the annular gap between the valve member and the valve casing. Means for sensing the fluid pressures at points spaced from the valve member on the upstream and downstream sides thereof are coupled to a fluid pressure actuating mechanism for acting directly upon the axially movable valve ember in order to vary the axial position of the valve member in accordance with the pressure drop across the valve.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: January 20, 1987
    Assignee: Spiro Investment A.G.
    Inventor: Bengt Berglund
  • Patent number: 4516600
    Abstract: Pressure regulating valves intended primarily for use as pressure regulating shut-off valves are disclosed. The valves utilize a simple piston assembly operative between a valve open position and a valve closed position responsive to a spring biasing the assembly toward the open position against an opposite force proportional to the outlet pressure. The piston assembly has only a single seal to seal the assembly against leakage, with a shut-off mechanism operative on only a 180 degree rotation thereof being cooperatively disposed with respect to the piston assembly so as to not require any additional seals. Embodiments having a fixed pressure regulation and a manually adjustable pressure regulation are disclosed.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: May 14, 1985
    Inventors: Oded E. Sturman, Benjamin Grill, Lynn Harrison