Turbine Or Swinging Vane Type Reactor Patents (Class 137/499)
  • Patent number: 11292711
    Abstract: The subject of the invention is a dispensing nozzle for dispensing a fluid into a tank of a motor vehicle. The dispensing nozzle comprises the following features: the dispensing nozzle comprises a channel (30) for passing through the fluid, wherein a main valve (5) is arranged in the channel (30), said main valve being movable between a closed position and an open position for controlling a fluid flow, the dispensing nozzle comprises a first maximum volumetric flow rate and a second maximum volumetric flow rate, wherein the second maximum volumetric flow rate is greater than the first, According to the invention it is provided that the dispensing nozzle comprises an adjustable flow limiter (22) which is arranged downstream of the main valve (5) and which is configured to limit the fluid flow selectively to the first or second maximum volumetric flow rate.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: April 5, 2022
    Assignee: ELAFLEX HIBY GMBH & CO. KG
    Inventors: Stefan Kunter, Sebastian Viets
  • Patent number: 11192445
    Abstract: An air intake grille through which air in a passenger compartment of a vehicle V is taken in includes a frame body, a plurality of first grille forming portions and second grille forming portions arranged in a lattice shape inside the frame body, and a flow rate adjusting plate disposed inside the frame body so as to be perpendicular to the first grille forming portions and the second grille forming portions. The flow rate adjusting plate has a flow rate adjusting window having an opening area smaller than an opening portion inside the opening portion formed by the first grille forming portion and the second grille forming portion.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: December 7, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Hiroshi Kano
  • Patent number: 10974590
    Abstract: Methods and systems are provided for regulating fuel flow in a fuel tank. In one example, a method may comprise fueling a fuel tank by receiving a nozzle into a filler tube which extends into a fuel tank to fuel the fuel tank, and directing fuel through the tube against vanes in a baffle which forms a compartment within the tank. Additionally, the method may comprise enabling the vanes to open so that pressure within the compartment remains below a level which would otherwise cause shut off the nozzle during the fueling.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 13, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Rob Ognjanovski, Jr.
  • Patent number: 10605076
    Abstract: Well systems comprise communicating devices for use in subterranean formations. An example well system comprises a mud valve system having a stator and a rotor to modulate drilling mud flow to provide increased pulse amplitude signals up-hole for improved and faster signaling from down-hole tools while also providing for better detection capability up-hole. The improved signaling technique permits for deeper well applications.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: March 31, 2020
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Olumide O. Odegbami, Larry DeLynn Chambers, Daniel Patrick Carter
  • Patent number: 10598404
    Abstract: A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: March 24, 2020
    Assignee: RESEARCH PRODUCTS CORPORATION
    Inventors: Peter J. Davis, Thomas J. Anoszko
  • Patent number: 10416015
    Abstract: A technique facilitates evaluation of a fluid, such as a fluid produced from a well. The technique utilizes a modular and mobile system for testing flows of fluid which may comprise mixtures of constituents, and for sampling fluids thereof. The multiphase sampling method includes flowing a multiphase fluid comprising an oil phase and a water phase through a first conduit, the oil phase and water phase at least partially separating in the first conduit, mixing together the oil phase and water phase to form a mixed bulk liquid phase by flowing the multiphase fluid through a flow mixer toward a second conduit downstream the flow mixer, sampling a portion of the mixed bulk liquid phase at location at or within the second conduit, wherein the sampled portion of the mixed bulk liquid phase has a water-to-liquid ratio (WLR) representative of the pre-mixed oil phase and water phase.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 17, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Cheng-Gang Xie, Jianhua Zhu, Alexander Tuborg Vilstrup, Guillaume Jolivet, Shasha Wang
  • Patent number: 10281384
    Abstract: Methods and systems are provided sensing particulate matter by a particulate matter sensor positioned downstream of a diesel particulate filter in an exhaust system. In one example, a method may include increasing an inlet opening of the particulate matter sensor when an exhaust flow rate falls below a threshold to allow more particulates to enter the particulate matter sensor and further includes decreasing the inlet opening when the exhaust flow rate rises above the threshold to reduce the particulates entering the sensor. By adjusting the amount of particulates entering the sensor based on the exhaust rate, and further including a plurality of flow redirectors inside the sensor, the rate of deposition of the sensor and hence the sensitivity of the sensor to the exhaust flow rate may be maintained at a desired level, and independent of the exhaust flow rate.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: May 7, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10260918
    Abstract: A flow amount measuring apparatus comprising: a rotating device, configured to rotate while material flows through the rotating device; a rotating bar, connected to the rotating device, configured to rotate corresponding to rotating of the rotating device; a feature acquiring device, configured to detect at least one feature of the rotating bar; and a computing unit, configured to compute a number for full rotations for the rotating bar based on the feature of the rotating bar, and configured to compute a flow amount for the material flows through the rotating device based on the number for full rotations.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: April 16, 2019
    Assignee: PixArt Imaging Inc.
    Inventors: Feng-Chi Liu, Yen-Min Chang
  • Patent number: 10221743
    Abstract: Methods and systems are provided sensing particulate matter by a particulate matter sensor positioned downstream of a diesel particulate filter in an exhaust system. In one example, a method may include increasing an inlet opening of the particulate matter sensor when an exhaust flow rate falls below a threshold to allow more particulates to enter the particulate matter sensor and further includes decreasing the inlet opening when the exhaust flow rate rises above the threshold to reduce the particulates entering the sensor. By adjusting the amount of particulates entering the sensor based on the exhaust rate, the rate of deposition of the sensor and hence the sensitivity of the senor to the exhaust flow rate may be maintained at a desired level, and independent of the exhaust flow rate.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: March 5, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 9982533
    Abstract: Methods and apparatus are disclosed for generating fluid pulses in a fluid column, such as within a well. Various described example fluid pulse generators each have a valve structure including a plurality of rollers rotatable around axes that are oriented perpendicular or otherwise angled with respect to the flow direction, the rollers being arranged to collectively at least partially obstruct the cross-sectional area of the fluid conduit. The rotational positions of the rollers may be varied to change the degree of obstruction in the conduit, thereby to generate pressure pulses in the fluid column detectable at a location remote from the fluid pulse generator; these pressure pulses can be used to encode a signal received at the fluid pulse generator.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: May 29, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Muhammad Subhan Bin Muhammad Moizuddin
  • Patent number: 9684318
    Abstract: A gas distribution system is provided for use in an enclosed volume. This system includes a distribution duct and a first inflatable duct portion in fluid communication with the distribution duct. A passageway is provided defining an opening which extends through the passageway wherein the opening is in fluid communication with the first inflatable duct portion and wherein a cross-sectional area of the opening is less than a cross-sectional area of the first inflatable duct portion. Additionally, an inflatable enclosure is provided which is in fluid communication with the opening of the passageway wherein the inflatable enclosure is configured to form a volume within and separated from the enclosed volume.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: June 20, 2017
    Assignee: THE BOEING COMPANY
    Inventor: Galen Duff Carroll
  • Patent number: 8777182
    Abstract: A fluid dispensing assembly, including a valve, a housing, a user interface, and a fitting to couple to a fluid source. The valve may include a first sensor detecting proper placement of the fluid container based on a magnetic material positioned at the bottom of the fluid container, a plunger having a plunger shaft coupled thereto, the plunger selectively placing the valve in fluid communication with the fluid container, and a solenoid coupled to the plunger shaft and moving the plunger shaft to transition the plunger between an open position and a closed position. The user interface may be coupled to the valve to enable selection of at least a fluid container size and a dispensing mode.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: July 15, 2014
    Assignee: GrinOn Industries
    Inventor: Joshua Springer
  • Patent number: 8739819
    Abstract: A fluid regulating device includes a valve body having an inlet, an outlet, a valve port, and a control element shiftable within the valve body. A control assembly includes an actuator coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. A sense tube has a first end, a second end, and an intermediate portion, the first end positioned to communicate with the diaphragm chamber, the second end disposed adjacent the outlet, and the intermediate portion disposed adjacent an intermediate portion of the outlet. The sense tube includes a shoulder and a flared portion, with the flared portion disposed adjacent the second end.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: June 3, 2014
    Assignee: Emerson Process Management Regulator Technologies, Inc.
    Inventors: Gregory L. Foust, Jared B. Chizek, Mark A. Michnevitz, Tung K. Nguyen
  • Patent number: 8316882
    Abstract: The present invention relates to a mechanical fuse to seal pipes upon unintended rupture. When a pressure difference between a first pressure and a second pressure in a pipe is below a pressure threshold, a first spring retains a flap in a first position allowing gaseous fuel to flow from a first portion to a second portion and when the pressure difference between the first pressure and the second pressure is not below the pressure threshold the flap moves to a second position preventing the gaseous fuel from flowing from the first portion to the second portion.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: November 27, 2012
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Andrea Leigh Lubawy
  • Patent number: 8113232
    Abstract: A water flow control system for regulating water traveling through an existing water supply line preferably includes a housing connected to an existing water line. A user interface may be coupled thereto and remotely attached. A mechanism may automatically prevent water from flowing through the housing upon detection of a triggering event. A controller may be situated within the housing along with motion sensors. A rotatable fan may be situated within the housing along with a plurality of tracks, triggers, and resilient spring members anchored to the triggers and tracks respectively. The rotation speed of the fan may be commensurate with the real-time water flow rate of the water flowing through the housing. A control logic algorithm operates to close a restrictor valve if the water flow rate exceeds limits set by the user interface. A manually-actuated lever may also be attached to open or close the restrictor valve.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: February 14, 2012
    Inventor: Eric Tallman
  • Patent number: 8025077
    Abstract: The present invention relates to a mechanical fuse to seal pipes upon unintended rupture. When a pressure difference between a first pressure and a second pressure in a pipe is below a pressure threshold, a first spring retains a flap in a first position allowing gaseous fuel to flow from a first portion to a second portion and when the pressure difference between the first pressure and the second pressure is not below the pressure threshold the flap moves to a second position preventing the gaseous fuel from flowing from the first portion to the second portion.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: September 27, 2011
    Assignee: Toyota Motor Engineering & Manufacturing North American, Inc.
    Inventor: Andrea Leigh Lubawy
  • Patent number: 7775504
    Abstract: A fluid flow control device (1) comprising at least one valve, the or each valve being controlled by an electrically-operate e actuator (32), a control means (27) for controlling the actuators and a communication means (28) to provide signals for the control means (27), wherein the device (1) includes an electrical power generation means (5) to generate electricity from the flow of fluid in the control device to operate the actuators (32), the control means (27) and the communication means (28). The device does not require an external electricity supply as it generates its entire electricity requirement locally. The device (1) may also receive instructions wirelessly to control the at least one valve.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: August 17, 2010
    Assignee: Norgren Limited
    Inventor: Christopher Simon Patient
  • Patent number: 7059325
    Abstract: A vent valve apparatus (10) for use with a system for supplying breathable gas pressurised above atmospheric pressure to a human or animal. The apparatus (10) includes a gas washout vent (15), a vent valve (18) adapted to progressively restrict the flow area of the washout vent (15), and a pressure sensitive vent valve control means (20,22,23). The control means is adapted to progressively cause the vent valve (18) to restrict the flow area of the gas washout vent (15) in response to increases in the pressure of the gas supply, thereby substantially regulating the volumetric flow of gas and/or CO2 gas through the washout vent (15) over a range of gas supply pressures.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: June 13, 2006
    Assignee: ResMed Limited
    Inventor: Shane Douglas Hollis
  • Patent number: 6889700
    Abstract: Methods and apparatus are provided for modulating a flow of fluid in a duct using a rotating member that rotates in the duct. A sensing unit senses the rotation speed of the rotating member and generates a rotation signal as a function of the sensed rotation speed. A control unit receives the rotation signal from the sensing unit and generates a control signal to modify the rotation speed of the rotating member. The apparatus can be self-powering by generating an electric current in response to rotation of the blade.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: May 10, 2005
    Inventor: Fred George
  • Patent number: 6889692
    Abstract: A vent valve apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal includes a gas washout vent, a vent valve adapted to progressively restrict the flow area of the washout vent, and a pressure sensitive vent valve controller. The controller is adapted to progressively cause the vent valve to restrict the flow area of the gas washout vent in response to increases in the pressure of the gas supply. Thereby, the vent valve substantially regulates the flow of gas through the washout vent over a range of gas supply pressures.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: May 10, 2005
    Assignee: ResMed Limited
    Inventor: Shane Douglas Hollis
  • Publication number: 20040144427
    Abstract: Methods and apparatus are provided for modulating a flow of fluid in a duct using a rotating member that rotates in the duct. A sensing unit senses the rotation speed of the rotating member and generates a rotation signal as a function of the sensed rotation speed. A control unit receives the rotation signal from the sensing unit and generates a control signal to modify the rotation speed of the rotating member. The apparatus can be self-powering by generating an electric current in response to rotation of the blade.
    Type: Application
    Filed: January 23, 2003
    Publication date: July 29, 2004
    Inventor: Fred George
  • Patent number: 6557555
    Abstract: A vent valve apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal includes a gas washout vent, a vent valve adapted to progressively restrict the flow area of the washout vent, and a pressure sensitive vent valve controller. The controller is adapted to progressively cause the vent valve to restrict the flow area of the gas washout vent in response to increases in the pressure of the gas supply. Thereby, the vent valve substantially regulates the flow of gas through the washout vent over a range of gas supply pressures.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: May 6, 2003
    Assignee: ResMed Limited
    Inventor: Shane Douglas Hollis
  • Patent number: 6066043
    Abstract: Disclosed is an apparatus and method to redirect airflow and enhance heat transfer using an oscillating baffle. This apparatus and method allows for the improved efficiency of a heat transfer tunnel, while reducing the size of the tunnel. Several embodiments of the oscillating baffle have a first degree of freedom and a second degree of freedom which allows it to oscillate under the power of the airflow. The method employs the oscillating baffle to redirect and mix the airflow in order to enhance heat transfer in a heat transfer tunnel. The oscillating baffle is used for cooling, for heating, for enhancing the mixing of a multi-component air flow or redirecting an air flow. Other applications could include use in dusty environments to provide high speed gas streams sweeping a wall to prevent the build-up of dust.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: May 23, 2000
    Inventor: Charles W. Knisely
  • Patent number: 5927400
    Abstract: A device is described, for the adjustment of the flow rate of a liquid which circulates within thermal convectors or heat exchangers making up part of heating, conditioning or ventilation plants, or apparatus for the thermal treatment of products. The device comprises a body within which a movable shutter is provided, the position of which allows for adjusting the quantity of liquid flowing between at least an inlet duct and an outlet duct, the positioning of the shutter being obtained by way of a suitable actuator.The device comprises a control circuit and an instant flow rate and/or quantity meter of the liquid flowing in one of said ducts, for the automatic and continuous adjustment of the flow, by way of the appropriate positioning of the shutter.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: July 27, 1999
    Assignee: Eltek S.p.a.
    Inventors: Elvio Bononi, Costanzo Gadini
  • Patent number: 5509443
    Abstract: A pressure regulator for an industrial process system is connected between the industrial process equipment and pollution control equipment and exhibits a pressure inversely related to pressure changes in the pollution control equipment so as to maintain the exit pressure at the process equipment constant.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: April 23, 1996
    Assignee: Salem Engelhard
    Inventor: Stephen J. Russ
  • Patent number: 5409034
    Abstract: An electrically actuated valve for control of a pressurized fluid, particularly a sanitary valve, comprises a rotor (15) arranged in a housing (1) between an inlet passageway (6) and an outlet passageway (7). The rotor (15) is rotatable under the action of the pressurized fluid and transports portions of the fluid from the inlet passageway (6) to the outlet passageway (7). There is an operational connection between the rotor (15) and an element (19) rotatably arranged in a chamber (21) filled with an electro-viscous liquid (22). The electro-viscous liquid (22) is arranged between two electrodes (23, 24) to which as high voltage (25) can be applied. In one embodiment of the invention the rotor (15) also forms the closure element of the valve, which is braked to a various extent by the rotatable element (19) arranged in the electro-viscous liquid. In a further embodiment rotation of the rotor will supplied to a closure member via the rotatable element, which will then be an element of a clutch, and gear means.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: April 25, 1995
    Assignee: Hansa Metallwerke AG
    Inventors: Ulrich Ostertag, Reinhard Ostertag
  • Patent number: 5406977
    Abstract: This invention relates to an automatic flowrate regulator for ventilation and air-conditioning installations, wherein it comprises a rigid flap articulated in the body and which is subjected, on the one hand, to elastic means, on the other hand, to the pressure of the air stream, this antagonistic action ensuring control of said flap which at any moment leaves free a section adapted to ensure balancing of the installation.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: April 18, 1995
    Inventors: Christian Barbarin, Laurent Barbarin
  • Patent number: 5398728
    Abstract: A volume flow controller for air conditioning and ventilation apparatus which has a pivotable flap in a flow duct whose pivot shaft has a lever arm and which is articulated to a spring. To provide a mechanically self-actuating volume flow controller, in which the spring is matched to the control process by a simple adjustment, the spring is a leaf spring whose one end is connected with a lever and whose other end is so fastened on a cam disk that upon adjustment of the cam disk about a rotation point, the leaf spring is entrained by the cam disk and rolls on the curve thereof. A device is provided for fixing the cam disk.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: March 21, 1995
    Assignee: Gebruder Trox Gesellschaft mit beschrankter Haftung
    Inventors: Gregor Baumeister, Manfred Sadkowski
  • Patent number: 5348449
    Abstract: A passive aspirator based on the Venturi effect has a pivotable flap in the inlet portion of a first air passage. The flap reduces the air flow through the passage when high pressure is present. A spring biases the flap toward an open position. Increasing air flow overcomes the spring force and tends to close the flap. This variable-volume flow allows use of a large enough passage to aspirate sufficient air at low flow rates but does not produce excess waste air at high flow rates.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: September 20, 1994
    Assignee: Lake Center Industries, Inc.
    Inventors: Robert A. Wilke, James M. Grupa
  • Patent number: 5044394
    Abstract: An apparatus for regulating or controlling the outflow from a rain tank, a rain overflow, etc. contains a slide which, by a drive mechanism, can close the outlet line from the tank. The position of the slide is controlled by a control mechanism. The control mechanism is operated by the hydraulic oil of a hydraulic circuit having a hydraulic pump. The latter is driven by a turbine wheel, which is housed in a turbulence restrictor located downstream of the slide and which is rotated by the flow of the outflowing water.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: September 3, 1991
    Inventor: Hansjorg Brombach
  • Patent number: 4951722
    Abstract: A flow rate limiting device (40) for a fuel dispensing nozzle (10) having an inlet (12) through which fuel is supplied to said nozzle (10) from a supply hose (14) and an outlet (20) from which fuel is discharged, as into a tank of a vehicle. The device (40) includes a flow restrictor (42) which is mounted in the fuel dispensing nozzle in its internal flow passage (16) the flow restricter (42) is automatically operated to reduce the flow rate, when the flow rate of fuel through said nozzle (10) reaches a preselected threshold rate such as the rate established by governmental regulations. After the flow rate of the fuel in the internal flow passage (16) is reduced below the preselected threshold rate, the flow restriction is attentuated such that the flow in the passage (16) can increase and approach the threshold rate.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: August 28, 1990
    Inventors: Leonard R. Nitzberg, Paul D. Manhradt
  • Patent number: 4905724
    Abstract: A material regulating valve which controls the flow of an additive material into a primary material as a function of the volume, flow rate, and viscosity of the primary material. The device is comprised of a two sectioned body with a primary flow path and an additive flow path through the body such that the additive flow path intersects the primary flow path at one portion in the body. Located between the primary flow path and the additive flow path is a additive flow regulating component. The device also included a flow indicator which provides a visual confirmation when material is flowing through the primary path and a manual control component which provides a manual over ride of the normally self controlling flow regulating component.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: March 6, 1990
    Assignee: Ryder International Corporation
    Inventors: Joseph V. Ranalletta, Joseph J. Cerola
  • Patent number: 4844113
    Abstract: An automatic shut-off safety valve comprising a movable poppet held in a stable position by magnets and a movable weight. On the occurrence of an abnormal condition, such as a seismic event, the movable weight is displaced and gravity carries the poppet downward until it engages a valve seat, closing off fluid flow. Magnets may also be used to hold the poppet in its closed position. Modifications include using the fluid flow itself to assist in displacing the poppet from its stable position.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: July 4, 1989
    Inventor: Cecil R. Jones
  • Patent number: 4785840
    Abstract: The passage of ore through a pass is controlled by means of a rotatably mounted arcuate door which is orientated so that a convex face of the door faces oncoming material flow. When the rate of material flow is so high that the door is forced open, fins on a concave face of the door react with the material flow and a force is generated which rotates the door to a blocking position at which the rate of material flow is substantially reduced.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: November 22, 1988
    Inventor: Anthony B. Cremen
  • Patent number: 4785300
    Abstract: An improved acoustic signal generator has rotor and stator elements, each having a plurality of radially-extending lobes and intervening ports relatively positioned and configured to establish fluid dynamic forces that bias the generator into an open position, thereby imparting a "stable open" characteristic to the generator. The rotor is located downstream of the stator, and rotor lobes are outwardly tapered in the downstream direction and have underlap relative to the upstream stator lobes. The invention is especially suited for use in oil industry MWD operations to communicate downhole measurement data to a well surface during drilling. In one embodiment, undercuts on the rotor lobes impart a flutter action which clears debris.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: November 15, 1988
    Assignee: Schlumberger Technology Corporation
    Inventors: Wilson C. Chin, Jose A. Trevino
  • Patent number: 4694851
    Abstract: The invention concerns a flow regulator, intended for gaseous substances, in particular for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within desired limits. The flow regulator comprises an envelope and a regulating member disposed in the flow passage confined by the envelope. The flow regulator is provided with limiter members for limiting the differential pressure range of the flow regulator, said limiter members being disposed to restrict the movement of the regulating member. The limiters are adjustable and/or self-adjusting. The flow regulator has a scale for setting the limiter members.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: September 22, 1987
    Assignee: Halton Oy
    Inventors: Erkki Aalto, Veikko Yla-Hemmila
  • Patent number: 4678005
    Abstract: The present invention concerns a flow regulator for gaseous substances, particularly a flow regulator intended for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating member turnably disposed in the flow passage confined by the envelope. The torque produced by the flow of gaseous substance on the regulating member and on the other hand a countertorque dependent on the position of the regulating member cause the regulating member turning in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintaining the volumetric flow rate at predetermined magnitude. The regulating member is substantially slightly curved at least in the flow surface facing the incoming flow of the gaseous substance.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: July 7, 1987
    Assignee: Halton Oy
    Inventors: Erkki Aalto, Veikko Yla-Hemmila
  • Patent number: 4674531
    Abstract: The present invention concerns a flow regulator for gaseous substances, particularly a flow regulator intended for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating member turnably disposed in the flow passage confined by the envelope (11). The torque produced by the flow of gaseous substance on the regulating member and on the other hand a counter-torque dependent on the position of the regulating member cause the regulating member turning in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintaining the volumetric flow rate at predetermined magnitude.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: June 23, 1987
    Assignee: Halton Oy
    Inventors: Erkki Aalto, Veikko Yla-Hemmila, Reijo Villikka
  • Patent number: 4523609
    Abstract: A volume flow or pressure regulating device is described which is especially suitable for air conditioning or air heating systems. The device transmits a torque moment function onto the flap control shaft in response to the flap angle. The device includes primarily a shaft (2) which is rotatably supported and extends through a conduit (3) in which the flap is mounted on the shaft which cooperates with a curved cam disk (10). One end of a tension cable (9) is secured to a circumferential point of the cam disk and the other end of the tension cable (9) is secured to the free end of a bending spring 6, the opposite end of which is secured to a fixed point. An adjustable tensioning member (7) defines, in accordance with its position relative to the length of the bending spring (6) the effective or bendable length of the bending spring (6).
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: June 18, 1985
    Assignee: H. Krantz GmbH & Co.
    Inventor: Franz Weck
  • Patent number: 4501261
    Abstract: Hot water supply temperature is set by a temperature setting device in response to an instantaneous flow rate signal from a water flow rate sensor arranged in a water supply pipe and a feeding water temperature signal from a feeding water temperature sensor which are compared with a predetermined hot water supply temperature and calculated in a control unit. A proportional valve and other devices in a gas supply pipe are controlled in response to the result of the comparison and calculation to define a required volume of gas for ignition and heating. At the same time, a fan damper is controlled by a damper control device so as to adjust the volume of combustion air. A signal representing discharging hot water temperature from a discharging hot water temperature sensor arranged in a hot water feeding pipe is fed back to the control unit and calculated therein, and a valve in the hot water supply pipe is adjusted in response to the result of calculation to attain the desired hot water supply temperature.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: February 26, 1985
    Assignee: Toto Limited
    Inventors: Osamu Tsutsui, Shusaku Murakami, Hidehiko Kuwahara, Shigefumi Yasunaga
  • Patent number: 4491148
    Abstract: An automatic storm choke valve having two vertically spaced-apart valve members movable longitudinally within a valve housing to open and close the valve. A pair of vanes pivotally affixed to an upper valve member at its lower end are kept in a preset oblique position by a pair of compression springs, mounted within the upper valve member, allowing a predetermined amount of fluid to pass through the valve. The vanes cause the valve members to rotate responsive to an upward fluid flow within the housing. A pressure equilization chamber affixed below the lower valve member is provided with a compression spring, which in its expanded position tends to keep the valve open.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: January 1, 1985
    Inventor: William N. Schoeffler
  • Patent number: 4488575
    Abstract: The invention concerns a volume flow regulator for ventilation systems with a conduit section (1) in which a regulating part (3) is pivotably mounted about an axle (2) which bisects the conduit cross section, whereby the regulating part (3) has a basically even surface on its leading side and a length which corresponds to the conduit height.In order to reduce the noises produced by the volume flow regulator itself, the regulating part (3) has a semicircular section in a plane vertical to its pivot axle (2), whereby the section radius corresponds to one half the conduit height. In a rectangular conduit section the regulating part (3) is a semicylinder whose curved contour fits against a conduit wall with a slight amount of play in all regulating positions. The regulating part can be balanced in various ways. In addition, a diffuser (24, 27) can be connected in after it which also functions as a sound absorber.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: December 18, 1984
    Assignee: Gebr. Trox GmbH
    Inventors: Josef Haaz, Wolfgang Finkelstein, Gregor Baumeister
  • Patent number: 4340083
    Abstract: A valve includes a piezoelectric bar mounted as a cantilevered beam. The free end of the bar is mounted for movement toward and away from a valve seat surrounding a control opening. The beam is initially flexed when in the closed position so as to maintain a fluid-tight seal with the seat. Application of an electrical signal causes the bar to flex further, thereby causing the deflectable beam portion to move away from the valve seat and permitting fluid to flow through the control opening. The beam valve may be designed to provide a substantially constant flow independent of changes in the pressure differential thereacross, and to exert a minimum closing force against a seat to provide a substantially fluidtight seal therewith in the absence of a command signal applied to the bar.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 20, 1982
    Assignee: Carleton Controls Corporation
    Inventor: Richard D. Cummins
  • Patent number: 4289161
    Abstract: A fluid flow regulator wherein a shaft which extends transversely of the passage in a tubular housing carries a flap having two mutually inclined sections. A spring biases the flap to a fully open position and the flap is moved from such open position toward a fully closed position by the fluid which flows through the passage in a direction from the one toward the other axial end of the housing. A flow restricting device is installed in the housing so that it defines one or more channels for the flow of fluid against one or more selected portions of or against the entire flap, depending upon whether the flap extends across the entire passage or across a central portion of the passage. The flow restricting device enhances the sensitivity of the flap so that the latter can change its position in response to each variation of the pressure of fluid which is caused to flow through the housing at a relatively low pressure.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: September 15, 1981
    Inventor: Emil Siegwart
  • Patent number: 4265268
    Abstract: A modulating flow control valve assembly having a bypass extending from the face of the valve through the valve and the means by which the valve is mounted within the valve body. As the valve moves within the valve body in response to fluid demands, the amount of bypass fluid is varied accordingly by controlling the amount of fluid permitted to pass through the bypass.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: May 5, 1981
    Assignee: Yarway Corporation
    Inventor: Heinz K. Hetz
  • Patent number: 4246918
    Abstract: The present invention encompasses a method and apparatus for assisting in the operation of air control dampers. An air deflector is positioned downstream from a rotatable damper in an air conduit. The deflector is positioned to direct air moving over one side of the damper against the damper during opening to assist in the opening movement and thereby reduce the amount of weight which would otherwise be required. The same deflector is positioned so that upon closing of the damper air will be deflected against the opposite side of the damper blade to augment the torque forces tending to close the damper while also reducing the pressure drop from one side of the damper to the other. In another embodiment of the invention a sail blade is provided upstream from the control damper to assist in closing the damper at low flow conditions.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: January 27, 1981
    Assignee: Tempmaster Corporation
    Inventor: Raymond H. Dean
  • Patent number: 4222408
    Abstract: A check valve having a body with a passage therethrough, a pair of vanes pivotally mounted within said passage so that they open and close flow therethrough responsive to flow in one direction, said vanes having an arcuate shape to create a smooth venturi passage between each vane and the opposed wall of the body so that the vanes open responsive to excess flows in the direction opposite to said one direction.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: September 16, 1980
    Assignee: Anderson, Greenwood & Co.
    Inventor: Lomis Slaughter, Jr.
  • Patent number: 4214607
    Abstract: Unidirectional flow limiter housed in a union between a pipe and a user apparatus, comprising a first channel, a second channel, a flow reduction member between the two channels, a third channel, a non-return valve in the third channel and constituted by a deformable annular member placed concentrically about one of the first or second channels.
    Type: Grant
    Filed: January 11, 1979
    Date of Patent: July 29, 1980
    Assignee: Societe Anonyme: La Telemecanique Electrique
    Inventor: Daniel Bouteille
  • Patent number: 4197809
    Abstract: A flow responsive device for use in a fluid flow system to establish a signal when a predetermined flow rate is attained within a flow conduit. The device is adapted for connection to a flow conduit and has a target vane adapted for insertion within the flow conduit for movement in response to predetermined flow to open internal valve means against the bias force of a compression spring and control pressure within a pressure chamber. In operation, the control pressure is maintained at a higher pressure than the fluid pressure within the flow conduit so that after initial opening of the valve means, the control pressure drops and the valve means undergoes fast-action movement to its fully open condition. The flow rate at which the valve means closes is less than the flow rate at which the valve means opens so that hunting of the valve means during operation is prevented.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: April 15, 1980
    Assignee: Textron, Inc.
    Inventor: Dwight N. Johnson
  • Patent number: 4188144
    Abstract: A pivoting member, especially the air flow rate meter of an internal combustion engine is disposed on a hub which surrounds a locally fixed shaft. Extending inwardly from the hub is a protrusion, for example a pin, which penetrates an opening in the wall of the shaft which is hollow at this point due to a blind bore extending axially into the shaft. The protrusion is held between two balls or rollers which are located in the blind bore and held in position by cooperation of a spring and an adjustment screw. The adjustment screw has a counter nut which bears on the end face of the shaft and also has gear teeth which engage a first set of threads of a pinion. The pinion has another set of threads of opposite and slightly different pitch so that rotation of the pinion causes differential rotation of the counter nut and permits very precise axial positioning of the hub which carries the pivoting member.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: February 12, 1980
    Assignee: Robert Bosch GmbH
    Inventors: Klaus-Jurgen Peters, Hermann Nusser, Manfred Knetsch