Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8186230 | System and method for airflow sensing and monitoring A system and method for measuring the airflow in an air handling unit, comprising a pressure plate with a plurality of apertures having a known surface area, a differential pressure manometer, and two. The first end of the leads is attached to a differential pressur... | 05/29/2012 |
| 8171803 | Air sampling apparatus and method A sampling system includes a collection module including a gas handler, and a flow controller in communication with the gas handler of the collection module. The flow controller controls the gas handler to move a selected volume of gas through the collection module.... | 05/08/2012 |
| 8141435 | Pressure measurement for flow metering device A flow metering device includes a flow tube, a motor for positioning the flow tube, an outlet nozzle in fluid communication with the flow tube, and an inlet nozzle in fluid communication with the flow tube. The outlet nozzle has an outlet pressure tap and the inlet ... | 03/27/2012 |
| 8065923 | Method and apparatus for measuring the flow rates of the individual phases of a multiphase fluid mixture A flow rate measuring method for a multiphase fluid mixture flowing into a line is provided. The method comprises the steps of passing the fluid mixture through a Venturi tube having a pressure drop, measuring a differential pressure across the Venturi tube and a li... | 11/29/2011 |
| 8024982 | Duct-mountable sensing unit A duct-mountable sensing unit includes a plurality of sensors for detecting respective parameters, including pressure, of a fluid in a duct. The sensing unit enables fluid communication between the sensors and the fluid in the duct through a single insertion point i... | 09/27/2011 |
| 7992453 | Erosion-resistant insert for flow measurement devices An erosion-resistant insert is provided for a flow measurement device having a fluid displacement member. The insert includes a flange and a sleeve extending axially from the flange. The sleeve may be inserted into a recess machined into a fluid conduit of the fluid... | 08/09/2011 |
| 7810400 | Velocity based method for determining air-fuel ratio of a fluid flow A method for determining one or more fluid flow parameters for a fluid flowing within a pipe is provided. The fluid is a mixture of solid particles and gas. The method includes the steps of: a) providing a meter operable to determine the velocity of the fluid flow t... | 10/12/2010 |
| 7770469 | Differential pressure measurement device having a microwave resonator with a flexible member A differential pressure (dP) measurement device for use in flow measurement including a first microwave resonator (1) having a flexible or yieldable part or member (4) deformable or yieldable when subject to a differential pressure in such a way as to ... | 08/10/2010 |
| 7765879 | Flow control valve for measuring flow coefficient and flow rate A flow control valve has upstream fluid pressure outlets provided between inner and outer circumferential surfaces of an upstream retainer, which is attached to an upstream inner surface of a valve body. A second conduit is provided between inner and outer surfaces ... | 08/03/2010 |
| 7603916 | Wet gas metering using a differential pressure and a sonar based flow meter A method and apparatus for measuring wetness of a gas flow within a conduit is provided that includes a first pressure sensor, a second pressure sensor, a sonar based flowmeter, and a processing device. The first pressure sensor is operable to sense the pressure of ... | 10/20/2009 |
| 7587948 | Flow rate measurement for industrial sensing applications using unsteady pressures An apparatus for use in an industrial process for measuring a velocity of a fluid moving in a pipe includes a probe disposed in said fluid flow. The probe includes a tube and an array of at least two sensors disposed at different axial locations along the tube. Each... | 09/15/2009 |
| 7549347 | Multiple differential volume tube measurement quantitative conveying device and its conveying method thereof This invention discloses a multiple differential volume tube measurement quantity conveying device and its conveying method thereof. The device includes volume tubes, inlet pipes and outlet pipes, in which there are at least two set of volume tubes divided into two ... | 06/23/2009 |
| 7503227 | Method and apparatus for measuring parameters of a fluid flow using an array of sensors An apparatus for measuring velocity of a fluid passing through a pipe is provided. The apparatus includes a spatial array of sensors having at least two sensors disposed at different axial locations along the pipe, wherein the sensors provide at least one signal ind... | 03/17/2009 |
| 7461562 | Process device with density measurement A process variable transmitter for measuring a process variable of a process fluid in a vessel includes first and second pressure couplings arranged to receive a first pressure and a second pressure of process fluid in the vessel. These pressures are related to the ... | 12/09/2008 |
| 7458280 | Wet gas indication using a process fluid differential pressure transmitter A process pressure fluid transmitter is coupled to a differential pressure producer and measures a differential pressure across the producer. A statistical parameter is calculated upon successive differential pressure indications, and the calculated parameter is use... | 12/02/2008 |
| 7454982 | Flow meter for measuring flow velocity or volumetric flow rate based on pressure gradient The invention relates to a new method and a new apparatus to accurately measure flow rates in injection systems such as gasoline, direct injection gasoline and diesel downstream of the injector where the fuel (liquid in general) is discharged from a nozzle (e.g. an ... | 11/25/2008 |
| 7418877 | Wet gas metering using a differential pressure based flow meter with a sonar based flow meter A method and apparatus for measuring a parameter of a wet gas flow is provided, wherein the apparatus includes a differential pressure based flow meter configured to determine a first volumetric flow rate of the wet gas flow. Additionally, the apparatus includes a s... | 09/02/2008 |
| 7412904 | Isokinetic testing apparatus and system An isokinetic testing machine is disclosed having a support frame, a sub-assembly disposed on the support frame, a power source operably disposed within the sub-assembly, a first main arm having a proximal apex end and a distal end, the first main arm distal end is ... | 08/19/2008 |
| 7409874 | Metering apparatus for fuel injector flow test Metering apparatus including wall portions which define an elongate generally upright cavity of substantially uniform cross-section and an inlet to the cavity to enable fluid which is to be metered to be fed into the cavity. The apparatus further includes a pressure... | 08/12/2008 |
| 7367240 | Apparatus and method for providing a flow measurement compensated for entrained gas A apparatus 10, 110 is provided that measures the speed of sound and/or vortical disturbances propagating in a fluid or mixture having entrained gas/air to determine the gas volume fraction of the flow 12 propagating through a pipes and compensating or... | 05/06/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7359803 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par... | 04/15/2008 |
| 7347089 | Gas volume contents within a container, smart volume instrument A method for determining the volume of an incompressible gas in a system including incompressible substances in a zero-gravity environment. The method includes inducing a volumetric displacement within a container and measuring the resulting pressure change. From th... | 03/25/2008 |
| 7337675 | Method for measuring average velocity pressure and system thereof A method for measuring average velocity pressure of a stack comprises the following steps. First, a total pressure measuring device is provided. The total pressure measuring device then measures the total pressure at a first location in the stack. Next, physical par... | 03/04/2008 |
| 7337075 | Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations x1-xN disposed axially along a pipe 14 for measuring at least one par... | 02/26/2008 |
| 7328624 | Probe for measuring parameters of a flowing fluid and/or multiphase mixture A probe 10,170 is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, ... | 02/12/2008 |
| 7322251 | Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors A method, apparatus and system are provided to measure the process flow of a fluid or medium traveling in a pipe. The system and apparatus feature a standoff and piezoelectric-based sensor arrangement having a plurality of standoffs arranged on a pipe and a pluralit... | 01/29/2008 |
| 7313954 | Apparatus for measuring flow characteristics A flow detection device for detecting a flow characteristic of a fluid within a pipe is disclosed. The flow detection device includes a first channel portion that defines a first channel with an upstream aperture. The fluid can flow into the first channel through th... | 01/01/2008 |
| 7308820 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable based sensor for measuring unsteady pressures inside a pipe comprises a cable wrapped around the pipe and an outer band compressing the cable towards the pipe. The cable provides a signal indicative of unsteady pressure within the pipe in response to ex... | 12/18/2007 |
| 7302861 | Portable flow measurement apparatus having an array of sensors A portable flow measuring apparatus includes an array of pressure sensors used to measure the acoustic and convective pressure variations in the flow to determine a desired parameter. A portable processing instrument processes the signals provided by the sensing arr... | 12/04/2007 |
| 7299705 | Apparatus and method for augmenting a Coriolis meter A flow measuring system is provided that provides at least one of a compensated mass flow rate measurement and a compensated density measurement. The flow measuring system includes a gas volume fraction meter in combination with a coriolis meter. The GVF meter measu... | 11/27/2007 |
| 7299706 | Flow meter and method of using the same The invention relates to a new method and a new apparatus to accurately measure flow rates in injection systems such as gasoline, direct injection gasoline and diesel downstream of the injector where the fuel (liquid in general) is discharged from a nozzle (e.g. an ... | 11/27/2007 |
| 7295934 | Flow meter performance monitoring system Apparatus and associated systems, methods and computer program products relate to monitoring the performance of an operating gas meter by automatic and substantially continuous differential pressure (dP) measurement. Measured dP may be compared against a baseline dP... | 11/13/2007 |
| 7295933 | Configurable multi-function flow measurement apparatus having an array of sensors A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure pressures disturbances (e.g. vortical disturbances or eddies) moving w... | 11/13/2007 |
| 7284450 | Averaging orifice primary flow element A process flow device that includes a self-averaging orifice plate type of primary flow element for measuring, by a differential pressure process, the volumetric rate of fluid flow at a point in a fluid carrying conduit where the velocity profile of the fluid is asy... | 10/23/2007 |
| 7261002 | Flow rate measurement for industrial sensing applications using unsteady pressures Flow rate measurement system includes two measurement regions 14,16 located an average axial distance ΔX apart along the pipe 12, the first measurement region 14 having two unsteady pressure sensors 18,20, located a distance X1 | 08/28/2007 |
| 7255012 | Process fluid flow device with variable orifice A process device providing total fluid flow control is provided. The device includes a closure mechanism disposed in a flow conduit. The closure mechanism, which is preferably an iris-type diaphragm, provides a variable internal diameter. The device includes a diffe... | 08/14/2007 |
| 7253742 | Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors An apparatus for measuring at least one parameter associated with a fluid flowing within a pipe includes a spatial array of pressure sensors disposed at different axial locations x1. . . xN along the pipe. Each of the pressure sensors provides ... | 08/07/2007 |
| 7254493 | Pressure transducer based fluid velocity sensor The invention consists of a pressure transducer based air velocity sensor that has been optimized for use in metal ducts. The fluid flow velocity is determined by measuring the propagation delay of a direct path pressure wave signal transmitted through the fluid as ... | 08/07/2007 |
| 7237440 | Flow measurement apparatus having strain-based sensors and ultrasonic sensors A flow measurement apparatus is provided that combines the functionality of an apparatus that uses strain-based sensors and ultrasonic sensors to measure the speed of sound propagating through a fluid flowing within a pipe, and measure pressures disturbances (e.g. v... | 07/03/2007 |
