Piston Patents (Class 73/1.19)
  • Patent number: 10550833
    Abstract: The invention relates to a method as well as a microdosing system for dosing an amount of fluid to be dispensed, wherein the microdosing system includes a micropump including an inlet and an outlet and configured to suck the fluid to be dispensed through the inlet and to dispense at least part of the fluid from the outlet. Further, the inventive microdosing system includes a first flow sensor arranged on the inlet side or the outlet side having an opening and a flow rate meter, wherein the flow rate meter is configured to determine the flow rate of the fluid passing through this opening. Additionally, the inventive microdosing system includes calibrators and/or fault detectors of the first flow sensor.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 4, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Martin Richter, Martin Wackerle, Sebastian Kibler
  • Patent number: 10060776
    Abstract: A spool, including a substantially cylindrical flange portion and a substantially cylindrical front end portion which is thinner than the flange portion and whose center axis is substantially coincident with the center axis of the flange portion, is provided in a manner capable of slidingly moving in a cavity formed in a casing. The flange portion is inserted in a first cavity which has a center axis substantially coincident with the center axis of the casing and which has an inner diameter that is substantially the same as the diameter of the flange portion in length. The front end portion is inserted in a second cavity which is formed with its center axis being substantially coincident with the center axis of the casing, and which has an inner diameter greater than the diameter of the front end portion and less than the inner diameter of the first cavity in length.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 28, 2018
    Assignee: YAMASHIN-FILTER CORP.
    Inventors: Jiro Inoue, Nobuki Sasaki, Hiroshi Inaba, Nobuyuki Kitajima
  • Patent number: 9035781
    Abstract: A gas appliance monitoring apparatus for automatically detecting and alerting to a “gas-out” condition of a gas appliance during operation, and/or for alerting to the presence of prolonged “gas-on” conditions of an appliance. The apparatus utilizes a highly sensitive low loss and low flow gas flow indicator with multiple flow sensors to monitor the gas flow characteristics of the appliance during use. A gas flow analyzer and alarm timing mechanism analyzes the gas flow characteristics and sounds an alarm at the appliance or wirelessly at a remote location upon detection of either of the above conditions. A biasing attraction magnet is incorporated in the fluid flow indicator to offset either the force of gravity or a return spring in low flow/low pressure applications. The piston is sealed for use in high pressure/low flow applications, and provided with a vent hole for residual gas bleed-off upon a stoppage of gas flow.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: May 19, 2015
    Assignee: WATERSTRIKE INCORPORATED
    Inventor: David A. Struyk
  • Publication number: 20150052968
    Abstract: Apparatus and methods for proving a flow meter including a launch hold facility and a seal leak detect device.
    Type: Application
    Filed: October 15, 2012
    Publication date: February 26, 2015
    Applicant: DANIEL MEASUREMENT AND CONTROL, INC.
    Inventors: Donald M. Day, Drew S. Weaver
  • Patent number: 8950235
    Abstract: A self-flushing small volume prover apparatus, method and system for removing foreign materials. A piston can be configured with a valve arrangement located within a cylindrical object in order to permit fluid to pass through an annular passage when the piston travels from a downstream position to an upstream position. An inlet port and an outlet port can be located at the bottom of the cylindrical object. The outlet port can be welded at the bottom of the bore cylinder so that foreign material can flow directly out of the prover bore cylinder via the outlet port. The velocity of the piston can remove the collected foreign material from the bore cylinder via the outlet port, thus creating a self-flushing prover.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 10, 2015
    Assignee: Honeywell International Inc.
    Inventor: Darren Paul Heath
  • Patent number: 8915115
    Abstract: A piston prover comprises a measurement cylinder; a hydraulic cylinder coupled with a downstream end of the measurement cylinder; a measuring piston that moves a predetermined distance through the measurement cylinder during a measurement due to a fluid flow to eject a reference volume of fluid; and a piston rod that is movably in the hydraulic cylinder, wherein the measuring piston and the piston rod are separately constructed. When returning the measuring piston to a predetermined upstream measurement standby position, the piston rod moves the measuring piston to set the measuring piston at the predetermined measurement standby position, and thereafter only the piston rod is moved from upstream to downstream and is accommodated in the hydraulic cylinder.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 23, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kuge, Hajime Iida
  • Publication number: 20140331738
    Abstract: Apparatus for flow prover precisely measures the volume and the flow rate of a fluid through a cylinder. The prover includes a piston within a cylinder supporting a shaft extending longitudinally through the cylinder, which cylinder receives and discharges the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means draws the shaft and piston toward the fluid receiving end of the cylinder. Travel of the piston in the direction from the fluid receiving end to the fluid discharging end of the cylinder is sensed at discrete locations to provide an indication of the volume of fluid therebetween and the related flow rate. Each of a plurality of emitter/detector modules provides piston position sensing signals reflective of the volume and rate of fluid flowing through the cylinder. A switch bar rigidly and permanently fixes the position of the emitter/detector modules with respect to the piston and with respect to one another.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: FLOW MANAGEMENT DEVICES, LLC.
    Inventor: Michael D. Brown
  • Publication number: 20140318211
    Abstract: A positive displacement calibration tool useful for simultaneously calibrating a plurality of flow meters, the tool comprising: a frame; a housing block having a plurality of fluid chambers therein, each fluid chamber being connectible to a respective liquid flow line, each chamber having an axis therethrough, the axis of each fluid chamber being aligned within a predetermined close tolerance with the axis of each of the other fluid chambers formed in the block; a piston mounted within the block for movement within each fluid chamber; and an actuator connected to all of the pistons whereby the actuator is operative to displace each piston through its associated chamber to cause a precisely dispensed predetermined flow rate of a liquid to pass simultaneously from each chamber.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 30, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: JAMES DANIEL TREMEL
  • Patent number: 8871034
    Abstract: A master verification assembly includes a plurality of plunger devices. Each of the plunger devices includes a piston that is axially moveable between a raised position and a depressed position. When placed in a washing assembly, each of the plunger devices is aligned with a nozzle. The nozzles dispense a cleaning fluid under pressure. An axial force applied by the dispensed cleaning fluid depresses the pistons into the depressed position, whereupon the pistons disposed in the depressed position are axially secured in an indicator position. Upon removal of the master verification assembly from the washing assembly, depressed pistons in the indicator position indicate proper function of the nozzles, whereas pistons disposed in the raised position indicate improperly functioning nozzles.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: October 28, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Matthew Kenworthy
  • Patent number: 8726716
    Abstract: A piston insertion force gauge tool for measuring the insertion force of a piston into a bore of a brake caliper includes a housing assembly having an inner housing member at least partially disposed in an outer housing member, where the housing members are generally coaxial and selectively displaceable along the axis. First and second end members form the ends of the gauge tool. The inner housing member is received into the outer housing member at a second open end. A measuring device extends from the second end member through a first open end and to the first end member. The measuring device displaces the inner housing member with respect to the outer housing member to indicate the insertion force imparted on the piston.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: May 20, 2014
    Assignee: International Truck Intellectual Property Company, LLC
    Inventor: Mark Ehlers
  • Patent number: 8677800
    Abstract: A prover mounted upon a supporting lower framework includes a piston supporting rod extending longitudinally through a cylinder. Motive means supported on a frame mounted on the prover draws the rod toward the fluid receiving end of the cylinder. An upper framework is attached to the lower framework through a plurality of stanchions. Various I-beams formed as part of the upper framework enhance rigidity to the combination of lower framework and upper framework. The combination of lower framework and upper framework provides support for the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: March 25, 2014
    Assignee: Flow Management Devices, LLC.
    Inventor: Alexander Ignatian
  • Patent number: 8578752
    Abstract: A prover mounted upon a supporting lower framework includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means supported on a frame mounted on the prover draws the rod toward the fluid receiving end of the cylinder. An upper framework is attached to the lower framework through a plurality of stanchions. Various I-beams formed as part of the upper framework enhance rigidity to the combination of lower framework and upper framework. The combination of lower framework and upper framework provides support for the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: November 12, 2013
    Assignee: Flow Management Devices, LLC
    Inventor: Alexander Ignatian
  • Patent number: 8511138
    Abstract: A piston prover apparatus, method and system for accurately measuring the flow rate of a fluid by the measurement of the position of an internal piston. The piston can be integrated with a poppet valve arrangement located within a cylinder in order to permit fluid (e.g., cryogenic fluid) to pass through an orifice passage when the piston is drawn to an upstream position prior to proving the flow. An actuator in association with a motor and an encoder can be located inside the cylinder. The motor drives the piston to the upstream position of the cylinder when a proving run is initiated. Once the piston is released for the proving run, the initial and final positions of the piston can be accurately measured along with the transit time.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: August 20, 2013
    Assignee: Honeywell International, Inc.
    Inventors: Christopher Scott Larsen, Brian Krafthefer
  • Publication number: 20130152972
    Abstract: A self-flushing small volume prover apparatus, method and system for removing foreign materials. A piston can be configured with a valve arrangement located within a cylindrical object in order to permit fluid to pass through an annular passage when the piston travels from a downstream position to an upstream position. An inlet port and an outlet port can be located at the bottom of the cylindrical object. The outlet port can be welded at the bottom of the bore cylinder so that foreign material can flow directly out of the prover bore cylinder via the outlet port. The velocity of the piston can remove the collected foreign material from the bore cylinder via the outlet port, thus creating a self-flushing prover.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 20, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Darren Paul Heath
  • Publication number: 20130104621
    Abstract: A piston prover apparatus, method and system for accurately measuring the flow rate of a fluid by the measurement of the position of an internal piston. The piston can be integrated with a poppet valve arrangement located within a cylinder in order to permit fluid (e.g., cryogenic fluid) to pass through an orifice passage when the piston is drawn to an upstream position prior to proving the flow. An actuator in association with a motor and an encoder can be located inside the cylinder. The motor drives the piston to the upstream position of the cylinder when a proving run is initiated. Once the piston is released for the proving run, the initial and final positions of the piston can be accurately measured along with the transit time.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 2, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Christopher Scott Larsen, Brian Krafthefer
  • Publication number: 20130091923
    Abstract: A piston prover comprises a measurement cylinder; a hydraulic cylinder coupled with a downstream end of the measurement cylinder; a measuring piston that moves a predetermined distance through the measurement cylinder during a measurement due to a fluid flow to eject a reference volume of fluid; and a piston rod that is movably in the hydraulic cylinder, wherein the measuring piston and the piston rod are separately constructed, When returning the measuring piston to a predetermined upstream measurement standby position, the piston rod moves the measuring piston to set the measuring piston at the predetermined measurement standby position, and thereafter only the piston rod is moved from upstream to downstream and is accommodated in the hydraulic cylinder.
    Type: Application
    Filed: March 23, 2011
    Publication date: April 18, 2013
    Inventors: Hirokazu Kuge, Hajime Iida
  • Publication number: 20130000379
    Abstract: A piston insertion force gauge tool for measuring the insertion force of a piston into a bore of a brake caliper includes a housing assembly having an inner housing member at least partially disposed in an outer housing member, where the housing members are generally coaxial and selectively displaceable along the axis. First and second end members form the ends of the gauge tool. The inner housing member is received into the outer housing member at a second open end. A measuring device extends from the second end member through a first open end and to the first end member. The measuring device displaces the inner housing member with respect to the outer housing member to indicate the insertion force imparted on the piston.
    Type: Application
    Filed: March 15, 2010
    Publication date: January 3, 2013
    Applicant: International Truck Intellectual Property Company, LLC
    Inventor: Mark Ehlers
  • Patent number: 8264361
    Abstract: A highly sensitive low loss and low flow fluid flow switch is coupled with an automatic timer and/or optional transmitter to indicate the flow of gas to an appliance and to automatically start a reminder timer to turn the appliance off. After a preset time limit has expired, the timer either sounds an alarm or wirelessly triggers an alarm in a remote location. The receiver portion of the wireless timer may be mounted directly to the appliance (grill handle), so that the timer automatically resets when activity (cover opening or closing) is detected, indicating the appliance is still in use. An alarm can also be configured to sound when the grill is attempted to be ignited with the cover closed, thereby avoiding a potential explosion. A biasing attraction magnet is incorporated in the fluid flow switch to offset either the force of gravity or a return spring in order to extend performance to low pressure and low flow applications.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: September 11, 2012
    Assignee: Waterstrike Incorporated
    Inventor: David A. Struyk
  • Publication number: 20120216595
    Abstract: A prover mounted upon a supporting lower framework includes a piston supporting rod extending longitudinally through a cylinder. Motive means supported on a frame mounted on the prover draws the rod toward the fluid receiving end of the cylinder. An upper framework is attached to the lower framework through a plurality of stanchions. Various I-beams formed as part of the upper framework enhance rigidity to the combination of lower framework and upper framework. The combination of lower framework and upper framework provides support for the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
    Type: Application
    Filed: May 10, 2012
    Publication date: August 30, 2012
    Applicant: FLOW MANAGEMENT DEVICES, LLC
    Inventor: Alexander Ignatian
  • Patent number: 8205479
    Abstract: A method for mounting a prover and its attached motive means either horizontally or vertically as a function of the footprint available on the surface on which the prover is to be mounted. The method includes attaching the prover and its motive means to a lower framework. Attaching a plurality of stanchions to the lower framework. Mounting an upper framework on the stanchions. Adding a plurality of I-beams to the upper framework and to the stanchions to render the mounting for the prover rigid, whether the prover is mounted horizontally or vertically.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: June 26, 2012
    Assignee: Flow Management Devices, LLC
    Inventor: Alexander Ignatian
  • Patent number: 8196446
    Abstract: A prover mounted upon a supporting lower framework includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means supported on a frame mounted on the lower framework draws the rod toward the fluid receiving end of the cylinder. Upon such movement of the rod, a poppet valve formed as part of the piston opens to permit fluid flow through the piston. A clutch serving as part of the motive means permits travel of the piston from the fluid receiving end to the fluid discharging end of the cylinder and serve the flow rate measuring function of the prover. An upper framework is attached to the lower framework through a plurality of stanchions. Various I-beams formed as part of the upper framework enhance rigidity to the combination of lower framework and upper framework.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: June 12, 2012
    Assignee: Flow Management Devices, LLC
    Inventor: Alexander Ignatian
  • Patent number: 8161791
    Abstract: A prover includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the volume and flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means includes at least one element for drawing the rod and piston toward the fluid receiving end of the cylinder. Travel of the piston in the direction from the fluid receiving end to the fluid discharging end of the cylinder is sensed at discrete locations to provide an indication of the quantity of fluid therebetween and the related flow rate. Each of a plurality of switches, linear encoder or laser detector provides position sensing signals reflective of the volume and rate of fluid flowing in the cylinder. These signals, representative of this volume and flow rate, are compared with preset parameters to determine the degree of equivalence. Thereby, self testing and validation occurs.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 24, 2012
    Assignee: Flow Management Devices, LLC
    Inventor: Alexander Ignatian
  • Patent number: 8151639
    Abstract: Provided is a test tool for an airspeed indicator of an aircraft, including: a cylinder portion including an insertion groove with a predetermined amount of space, and of which one end is sealed by a cover and includes an injection portion on the cover so that the insertion groove passes through a pitot tube, and of which another open end includes a protruded step around its inner circumferential surface; a piston portion being inserted into the insertion groove to reciprocally move within the insertion groove, and including a protrusion portion having a size and a shape corresponding to an aperture of the insertion groove, and a bar-shaped knob portion being extended from the protrusion portion; and a display portion being formed of a transparent material on an outer surface of the cylinder portion to display a location of the protrusion portion reciprocally moving within the cylinder portion.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: April 10, 2012
    Assignee: Korea Aerospace Research Institute
    Inventors: Jae Won Chang, Kie Jeong Seong, Sang Jong Lee, Sang Man Moon, Hyoun Kyoung Kim, Il Kyung Park, Byoung Ho Jeon
  • Publication number: 20120024037
    Abstract: A compact prover assembly (10) suitable for determining the accuracy of a flow meter. The assembly (10) includes a piston (20) and cylinder arrangement (12) with a cylinder (14) with an inlet (16) and an outlet (18) towards respective ends thereof. The arrangement (12) also includes a piston (20) movable by fluid flowing through the inlet (16) towards the outlet (18), and means for measuring the time taken for the piston (20) to move between predetermined points in the cylinder (14). The piston (20) includes a flow past arrangement, which includes an opening (28) and a cover (34). The cover (34) is selectively movable substantially parallel to the piston between a closed position closing the opening (28), and an open position clear of the opening (28) to permit fluid to pass through the opening (28) and hence through the piston (20) when the piston (20) is static or being moved backwards towards the inlet (16).
    Type: Application
    Filed: March 24, 2010
    Publication date: February 2, 2012
    Applicant: ALDERLEY PLC
    Inventor: Glenn Christopher Massey
  • Publication number: 20100116019
    Abstract: A prover mounted upon a supporting lower framework includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means supported on a frame mounted on the lower framework draws the rod toward the fluid receiving end of the cylinder. Upon such movement of the rod, a poppet valve formed as part of the piston opens to permit fluid flow through the piston. A clutch serving as part of the motive means permits travel of the piston from the fluid receiving end to the fluid discharging end of the cylinder and serve the flow rate measuring function of the prover. An upper framework is attached to the lower framework through a plurality of stanchions. Various I-beams formed as part of the upper framework enhance rigidity to the combination of lower framework and upper framework.
    Type: Application
    Filed: January 6, 2010
    Publication date: May 13, 2010
    Applicant: FLOW MANAGEMENT DEVICES, LLC
    Inventor: Alexander Ignatian
  • Patent number: 7656305
    Abstract: There is disclosed a monitoring system for monitoring alignment of a piston rod assembly of a reciprocating pump, such as those used to pump drilling mud in the oil and gas exploration and production industry. In one embodiment, a monitoring system is disclosed which is for a reciprocating pump (10) of a type comprising a fluid end component (20), a power end component (18), and a piston rod assembly (12) extending between the fluid and power end components. The monitoring system includes a number of sensors (52, 74) coupled to the piston rod assembly, for providing an output indicative that the piston rod assembly is experiencing bending stress, which occurs in the event that the piston rod assembly becomes misaligned, in use of the pump.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: February 2, 2010
    Assignee: Spicket Valves and Pumps Limited
    Inventor: George Coulter Kennedy
  • Patent number: 7650775
    Abstract: A prover includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means includes at least one reel mounted belt for drawing the rod toward the fluid receiving end of the cylinder. Upon such movement of the rod, a poppet valve formed as part of the piston opens to permit fluid flow through the piston. A clutch serving as part of the motive means permits travel of the piston from the fluid receiving end to the fluid discharging end of the cylinder and serve the flow rate measuring function of the prover. Apparatus is also provided to permit opening of the poppet valve for maintenance and/or repair purposes. A framework permits support of the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: January 26, 2010
    Assignee: Flow Management Devices, LLC
    Inventor: Alexander Ignatian
  • Publication number: 20090178461
    Abstract: A prover includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means includes at least one reel mounted belt for drawing the rod toward the fluid receiving end of the cylinder. Upon such movement of the rod, a poppet valve formed as part of the piston opens to permit fluid flow through the piston. A clutch serving as part of the motive means permits travel of the piston from the fluid receiving end to the fluid discharging end of the cylinder and serve the flow rate measuring function of the prover. Apparatus is also provided to permit opening of the poppet valve for maintenance and/or repair purposes. A framework permits support of the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 16, 2009
    Inventor: Alexander Ignatian
  • Publication number: 20090019914
    Abstract: Disclosed is a bi-directional piston displacement type volumetric fluid flow rate delivery and metering system (calibration standard) and operational method for calibration of fluid flowmeters. The present invention provides reduced uncertainty of delivered volumetric fluid flow rate at meters under test relative to the uncertainty of volumetric fluid flow rate at meters under test provided by prior art bi-directional piston displacement type volumetric fluid flow rate standards given the same nominal cylinder diameters and working fluid and equal dimensional, timing and temperature measurement uncertainties by employing a plurality of metering pistons and cylinders to minimize the connecting volume piping between the metering piston cylinder outlet and meters under test, providing open access to one side of each metering piston to accomplish installation of temperature probes through the pistons into the working fluid and by operational method which minimizes the connecting volume to standard volume ratio.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 22, 2009
    Inventor: James Edward Winchester
  • Patent number: 7475586
    Abstract: A meter calibration apparatus includes a fluid intake conduit, a fluid discharge conduit, and a calibration cylinder connected in fluid communication with the intake and discharge conduits, the calibration cylinder defining a chamber. The apparatus further includes a piston slidable within the cylinder and defining first and second chamber portions on opposite sides of the piston, and at least one valve having an intake port in fluid communication with the intake conduit, a first flow port with a first flow conduit extending therefrom and connected to the first chamber portion for providing fluid communication therebetween, and a second flow port with a second flow conduit extending therefrom and connected to the second chamber portion for providing fluid communication therebetween.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: January 13, 2009
    Assignee: Total Meter Services Inc.
    Inventor: Dennis Jerome Swanek
  • Patent number: 7395690
    Abstract: A pulse production interval measurement module (or temporal reconciliation module) for preferred use with a computational flowmeter and/or non-computational flowmeters to thereby temporally reconcile or time shift flowmeter output produced by a volume of fluid flow through the computational flowmeter with the start and stop times of the flow of a calibrated fluid volume through a prover. The pulse production interval measurement module may be implemented with software and/or hardware and operate on stored data or real time or near real time measurements.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: July 8, 2008
    Inventor: Galen Cotton
  • Patent number: 7386408
    Abstract: A parallel kinematic machine has a parallel kinematic mechanism including an end effecter and a parallel link mechanism. A numerical control device controls a position and orientation of the end effecter based on kinematics of the parallel kinematic mechanism. A posture setter sets an adjustment tool on the end effecter in a known posture in a reference coordinate system defined outside the parallel kinematic mechanism based on a measurement method. A data acquirer acquires data in accordance with a measurement method selecting code for designating the measurement method used by the posture setter in setting the adjustment tool in the known posture, and defines a correlation between kinematic parameters for the parallel kinematic mechanism and the reference coordinate system. A calculator calculates the kinematic parameters based on the acquired data by using a relational expression describing forward kinematics of the parallel kinematic mechanism.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: June 10, 2008
    Inventors: Nobutaka Nishibashi, Kazuaki Yagi
  • Publication number: 20070169537
    Abstract: A pulse production interval measurement module (or temporal reconciliation module) for preferred use with a computational flowmeter and/or non-computational flowmeters to thereby temporally reconcile or time shift flowmeter output produced by a volume of fluid flow through the computational flowmeter with the start and stop times of the flow of a calibrated fluid volume through a prover. The pulse production interval measurement module may be implemented with software and/or hardware and operate on stored data or real time or near real time measurements.
    Type: Application
    Filed: September 19, 2006
    Publication date: July 26, 2007
    Inventor: Galen Cotton
  • Patent number: 7114367
    Abstract: A system for calibrating pulmonary function test equipment having syringe means, including a syringe having a cylindrically shaped sidewall, a proximal end with an centrally located orifice, a distal end with an output port, an interior cavity, and a plunger with a shaft slidably mounted through the orifice, a piston-type head mounted on one end of the shaft, and a handle mounted on an opposing end of the shaft; an FRC port; a rigid FRC bag connected in flow communication with the FRC port; control means having a plurality of stop mechanisms, including a first stop mechanism, a second stop mechanism structured to enable selective connection of the interior cavity in flow communication with the FRC port, and a third stop mechanism, and connection means structured to connect the syringe means to existing pulmonary function test equipment. A method of utilizing the system is also disclosed.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: October 3, 2006
    Inventor: Norman L. Owens
  • Patent number: 7089789
    Abstract: A fuel injection system (18) is calibrated as an assembled system. The fuel injection system (18) includes a unit pump (10) a cam follower (24), a joined fuel injection line (14) and injection nozzle (16). The fuel injection system (18) is mounted to a test stand an is subsequently calibrated to a specified fuel delivery and timing. The relative positions of the unit pump (10) and fuel injection nozzle (16) are fixed during calibration. The assembled fuel injection system is packaged and delivered so that the calibrated system can be installed in the relative positions fixed during calibration.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: August 15, 2006
    Assignee: Stanadyne Corporation
    Inventors: Kenneth H. Klopfer, Michael O'Brien
  • Patent number: 7060036
    Abstract: A portable apparatus for calculating respiratory oxygen consumption comprising a housing having a fluid inlet, a flow sensor, mounted within the housing, an oxygen sensor and means for calculating the respiratory oxygen consumption using data obtained from the oxygen sensor and the flow sensor. The invention also relates to a method of calculating respiratory oxygen consumption.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: June 13, 2006
    Assignee: Nutren Technology Limited
    Inventor: Austen Peter Bradley
  • Publication number: 20040040368
    Abstract: An apparatus and method that employ a motor control system coupled to a variable positive displacement water chamber system for testing a quantity meter. Using this apparatus and method, the flow rate of water passing through the meter can be positively controlled. The water meter generates an output signal that is monitored by an electronic sensor. The information from the motor controller is compared with the meter output signal to provide a measure of the meter's accuracy.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 4, 2004
    Inventors: Carl R. Guckenberger, Dan C. Pinney
  • Patent number: 6629447
    Abstract: A magnetically coupled, small volume, positive displacement, multi-axial, isokinetic, flow sensor calibrator or prover has one or more, serially interconnected flow tubes, through which a cylindrical, convoluted, displacer, with embedded, omni-directional magnet(s), and anti-compression device(s), sequentially, isokenetically dispenses calibration fluid through test flow sensor(s). An oscillating volume detector actuator magnetically coupled to the displacer has concentric, or parallel, outer rings connected to an inner, common center ring, with integral volume detector sensor initiator projection. The volume detector actuator outer ring(s) and center ring oscillate coaxially, respectively, with each flow tube, and a volume detector rod with integral volume detector sensors, sequentially activated by the initiator projection.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: October 7, 2003
    Inventor: Louis Charles Collins
  • Patent number: 6427517
    Abstract: A calibration system for a tube prover used in gas flow rate calibration equipment includes a low friction piston which provides an effective seal without the use of mercury. The low friction piston is easily movable in a prover tube of the calibration system in response to gas flow rates, even low flow rates. The piston is constructed of a light weight, low friction fluorinated hydrocarbon material. The piston has first and second seals which provide a positive seal with the inner surface of the prover tube and which maintain the alignment of the piston within the prover tube.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: August 6, 2002
    Assignee: McMillan Company
    Inventor: Robert D. McMillan
  • Publication number: 20020095972
    Abstract: A calibration system for a tube prover used in gas flow rate calibration equipment includes a low friction piston which provides an effective seal without the use of mercury. The low friction piston is easily movable in a prover tube of the calibration system in response to gas flow rates, even low flow rates. The piston is constructed of a light weight, low friction fluorinated hydrocarbon material. The piston has first and second seals which provide a positive seal with the inner surface of the prover tube and which maintain the alignment of the piston within the prover tube.
    Type: Application
    Filed: December 4, 2000
    Publication date: July 25, 2002
    Inventor: Robert D. McMillan
  • Patent number: 6408674
    Abstract: A device for remotely calibrating leak sensors is disclosed. The leak sensor calibration device includes a reservoir for storing a fluid calibrant, a conduit in flow communication with the reservoir, an outlet nozzle, an air supply source, and a valve mechanism. A portion of the conduit defines a dosing chamber for storing a measured quantity of the calibrant, and the outlet nozzle is in flow communication with the dosing chamber. The air supply source is adapted to pressurize the measured quantity of calibrant stored in the dosing chamber. The valve mechanism is adapted to eject the measured quantity of calibrant stored in the dosing chamber to the atmosphere through the outlet nozzle.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: June 25, 2002
    Assignee: Fisher Controls International
    Inventor: John Patrick Dilger
  • Patent number: 6359682
    Abstract: A fluid flow velocity measuring system for an internal combustion engine including a laser Doppler velocimeter having a probe for projecting a pair of coherent laser beams and beam guiding means for guiding the laser beams into a combustion chamber. The beam guiding means is installed in a spark plug mounting hole of an engine.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: March 19, 2002
    Assignee: Hyundai Motor Company
    Inventor: Sang-Bong Park