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| Number | Title | Issue Date |
| 8181540 | Measurement of sliding friction-induced vibrations for biomimetic tactile sensing Tactile sensors are disclosed that mimic the human fingertip and its touch receptors. The mechanical components are similar to a fingertip, with a rigid core surrounded by a weakly conductive fluid contained within an elastomeric skin. The deformable properties of t... | 05/22/2012 |
| 7987735 | Correlating push force and stalk vibration to a plant'S susceptibility to root lodging The present device enables measurement of the susceptibility of corn plants to root lodging. The device is used to push over a corn stalk and the force used to push over the stalk, and the vibration of the stalk caused by the push are recorded. As material breaks in... | 08/02/2011 |
| 7958788 | Piezoelectric vibrating beam force sensor A force sensor (10) is forced from a vibrating beam (11), an excitation piezoelectric device (12) to cause a vibration in the beam at its resonate frequency and a measurement piezoelectric device (12) to measure the frequencies being indi... | 06/14/2011 |
| 7886622 | Method for processing detection signal of vibratory inertial force sensor and vibratory inertial force sensor A method for processing a detection signal of a vibratory inertial force sensor is disclosed. This method improves detection accuracy of the vibratory inertial force sensor. A detection circuit of the vibratory inertial force sensor removes harmonic component from s... | 02/15/2011 |
| 7762151 | Load detection device A load detection device includes a piezoelectric body unit adapted to be deformed by receiving an electric voltage, the piezoelectric body unit generating an electric charge by receiving an external load, a drive portion applying the electric voltage to the piezoele... | 07/27/2010 |
| 7673529 | Method for processing detection signal of vibratory inertial force sensor and vibratory inertial force sensor A method for processing a detection signal of a vibratory inertial force sensor is disclosed. This method improves detection accuracy of the vibratory inertial force sensor. A detection circuit of the vibratory inertial force sensor removes harmonic component from s... | 03/09/2010 |
| 7424827 | Inspecting method of elastic body, inspecting apparatus thereof, and dimension predicting program thereof In an inspecting method of a piezoelectric/electrostrictive actuator having a piezoelectric/electrostrictive element and two or more electrodes, the frequency response characteristics is picked up when a vibration is given to the piezoelectric/electrostrictive actua... | 09/16/2008 |
| 7371601 | Piezoresistive sensing structure A technique for manufacturing a piezoresistive sensing structure includes a number of process steps. Initially, a piezoresistive element is implanted into a first side of an assembly that includes a semiconductor material. A passivation layer is then formed on the f... | 05/13/2008 |
| 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 |
| 7337674 | Pressure detector for fluid circuits A pressure measurement device usable for monitoring pressure of fluids such as blood, waste, and replacement fluid in a blood treatment system provides a reliable signal and other benefits by virtue of a number of features of the various embodiments disclosed. The p... | 03/04/2008 |
| 7334481 | Pressure sensor with improved vibrating microassembly and optical detection system A pressure sensor made of a wafer with a pair of parallel silicon layers and a silicon oxide layer there between, comprises a vibrating microassembly formed as a silicon beam, which is arranged in a plane perpendicular to the silicon layers and fastened to a support... | 02/26/2008 |
| 7332977 | Crystal clock generator operating at third overtone of crystal's fundamental frequency A crystal oscillator operates at the third overtone of the crystal's fundamental frequency. A value of a shunt resistor between the two phase-shift leg nodes is chosen so that the absolute value of the product gm×(Xc1)×(Xc2) is greater than the effec... | 02/19/2008 |
| 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 |
| 7320252 | Flow meter using an expanded tube section and sensitive differential pressure measurement A method and apparatus for measuring the flow rate of a fluid within tubing disposed within a downhole wellbore. The present invention provides an inverse Venturi meter inserted within tubing with an enlarged inner diameter portion. Pressure differential is measured... | 01/22/2008 |
| 7318353 | Method and apparatus for a product displacement sensing device A displacement sensing device transduces deflection of a body disposed around a conduit into complementary signals indicative of the amount of displacement experienced by the conduit. The displacement sensing device includes a cuff and a sensor disposed on an outer ... | 01/15/2008 |
| 7302830 | Flow detectors having mechanical oscillators, and use thereof in flow characterization systems An improved system, device and method for characterizing a fluid sample that includes injecting a fluid sample into a mobile phase of a flow characterization system, and detecting a property of the fluid sample or of a component thereof with a flow detector comprisi... | 12/04/2007 |
| 7299678 | Sensor apparatus A measurement head particularly for borehole use can measure multiple parameters with no electronics in the head and only a single conductor cable. Double-ended tuning forks (26, 28 and 38, 40) in the head are arranged to respond to different parameter... | 11/27/2007 |
| 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 |
| 7293605 | Feed-back control system for heat exchanger with natural shedding frequency The invention relates with the feed-back control system of a heat exchanger by use of the flow resonance phenomenon which maximizes the heat transfer efficiency by generating the flow disturbances of a heat transfer medium. If a heat transfer medium is periodically ... | 11/13/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 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 |
| 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 |
| 7197938 | Contact-based transducers for characterizing unsteady pressures in pipes A sensor head characterizes unsteady pressures in a fluid flowing within a pipe, as may be caused by one or both of acoustic waves propagating through the fluid within the pipe and/or pressure disturbances that convect with the fluid flowing in the pipe. The sensor ... | 04/03/2007 |
| 7197942 | Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors An apparatus 10 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 the velocity and volum... | 04/03/2007 |
| 7186131 | Vibration isolated transducer connector A transducer including a transducer body, a sensor associated with the transducer body, an electrical connector assembly fastened to an end of the transducer body, and a vibration damper system disposed between the end of the transducer body and the electrical conne... | 03/06/2007 |
| 7178215 | Instrumented transition alignment fixture and method Aspects of the invention relate to a fixture and a method to assist in the alignment of the inlet end of a transition duct and a combustor component in a turbine engine. The fixture includes a plurality of pressure transducers spaced on a mandrel so as to correspond... | 02/20/2007 |
| 7177081 | High contrast grating light valve type device A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the conditions for constructive and destructive interference with an incident... | 02/13/2007 |
| 7168321 | Vibration-type piezoelectric acceleration sensor element and vibration-type piezoelectric acceleration sensor therewith The vibration-type piezoelectric acceleration sensor element includes a frame; and a diaphragm, support, and retentive part, provided in the frame. The diaphragm includes a bottom electrode layer, a piezoelectric thin-film layer formed on the bottom electrode layer,... | 01/30/2007 |
| 7165464 | 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 ... | 01/23/2007 |
| 7159653 | Spacer sub The present invention involves a method and apparatus for communicating from within a wellbore to the surface of the wellbore, as well as communicating from the surface of the wellbore to downhole within the wellbore. More specifically, the present invention involve... | 01/09/2007 |
| 7160752 | Fabrication of advanced silicon-based MEMS devices A micro-electro-mechanical (MEM) device and an electronic device are fabricated on a common substrate by fabricating the electronic device comprising a plurality of electronic components on the common substrate, depositing a thermally stable interconnect layer on th... | 01/09/2007 |
| 7152460 | Apparatus and method for compensating 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... | 12/26/2006 |
| 7152479 | Pressure transmitter having a pressure sensor of micromechanical design A pressure transmitter has a housing (11) on which a pressure sensor (12) is fastened. There is provided in the housing a region, produced micromechanically, with reduced wall thickness that forms a separating diaphragm (22) such that the fluid ... | 12/26/2006 |
| 7150202 | Method and apparatus for measuring characteristics of core-annular flow An apparatus and method are disclosed wherein at least one parameter associated with a core-annular flow (CAF) in a pipe is measured by sensing unsteady pressures associated with undulations formed at the interface of a core region and an annular region in the CAF a... | 12/19/2006 |
| 7146864 | Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe An apparatus measures the speed of sound and/or vortical disturbances propagating in a fluid flow to determine a parameter of the flow propagating through a pipe. The apparatus includes a sensing device that includes an array of pressure sensors used to measure the ... | 12/12/2006 |
| 7139667 | Method for calibrating a volumetric flow meter having an array of sensors A method and apparatus are provided for calibrating a flow meter having an array of sensors arranged in relation to a pipe that measures a flow rate of a fluid flowing in the pipe. The method features the step of calibrating the flow rate using a calibration correct... | 11/21/2006 |
| 7138893 | Micro device Resonators 4 and 5 are able to oscillate horizontally and vertically to substrate 1. Resonator 4 is primarily composed of a supporting portion in stationary contact with substrate 1, a movable portion including a contact surface ma... | 11/21/2006 |
| 7134320 | Apparatus and method for providing a density measurement augmented for entrained gas A flow measuring system combines a density measuring device and a device for measuring the speed of sound (SOS) propagating through the fluid flow and/or for determining the gas volume fraction (GVF) of the flow. The GVF meter measures acoustic pressures propagating... | 11/14/2006 |
