Patent application number | Description | Published |
20090009036 | PRESSURE TRANSDUCER - A pressure transducer for high-pressure measurements comprising a housing and a piezoelectric resonator located in the housing, wherein the resonator comprises double rotation cut piezoelectric material configured or designed for vibrating in the fundamental tone of dual modes of the fast and slow thickness-shear vibrations. | 01-08-2009 |
20090287451 | METHOD AND SYSTEM FOR AZIMUTH MEASUREMENTS USING GYRO SENSORS - A method and system for azimuth measurements using one or more gyro sensors is disclosed. The method includes acquiring a first data from each of the gyro sensors with an input axis aligned to a first angular orientation and acquiring a second data from each of the gyro sensors with the input axis flipped to a second angular orientation opposite to the first angular orientation. An earth rate component at the first angular orientations is determined based on a difference between the first data and the second data to cancel out bias of each of the gyro sensors. The method may include acquiring a third data of the gyro sensor with the input axis aligned to the same angular orientation as the first angular orientation. An average of the first data and the third data may be used instead of the first data for determining the earth rate component. | 11-19-2009 |
20100077623 | APARATUS FOR AZIMUTH MEASUREMENTS USING GYRO SENSORS - An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor holders arranged along the longitudinal direction of the housing, at least one motor for driving the sensor holders, a transmission mechanism for transmitting a rotation force from the motor to each of the sensor holders and a controller for controlling a rotation of the motor. Each of the sensor holders has one of the gyro sensors and is rotatable about a rotation axis so as to change the orientation of the input axis of the gyro sensor. | 04-01-2010 |
20100223796 | APPARATUS FOR AZIMUTH MEASUREMENTS USING GYRO SENSORS - An apparatus for azimuth measurements is provided. The apparatus comprises a housing and a plurality of gyro sensors aligned in the housing. Each of the plurality of gyro sensors has an input axis for angular velocity measurements. There is provided a drive unit for rotating each of the plurality of gyro sensors about a rotation axis. Each of the plurality of gyro sensors changes orientation of the input axis with the drive unit. | 09-09-2010 |
20110015862 | METHOD AND APPARATUS FOR WELLBORE SURVEY USING INERTIAL SENSORS - A sensor apparatus comprising a housing, two or three gyroscope units and three accelerometer units. The gyroscope units are oriented orthogonally respective to each other and mounted within the housing. Each gyroscope unit includes a plurality of gyroscopes with input axes parallel to each other. The accelerometer units are oriented orthogonally respective to each other and mounted within the housing. Each accelerometer unit includes a plurality of accelerometers with detection axes parallel to each other. | 01-20-2011 |
20110050233 | VIBRATING HELICAL SPRING SENSORS AND METHODS TO OPERATE THE SAME - Example vibrating helical spring sensors and methods to operate the same are disclosed. A disclosed example apparatus includes a housing, a helical spring held in tension, a flowline to expose the helical spring to a fluid, a magnet to expose the helical spring to a magnetic field, and a wire to electrically conduct an actuating current through the helical spring to displace the helical spring. | 03-03-2011 |
20110094963 | MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE - To provide a membrane separation method capable of attaining reduced adsorption of a membrane-fouling substance contained in treatment water onto the surface of a separation membrane during membrane separation of the treatment water, to thereby lead retarded deterioration in membrane separation performance, and a membrane separation apparatus for performing the method. In the membrane separation method, to treatment water, a particulate cationic polymer which swells in water but does not substantially dissolve therein is added, and the treatment water is subjected to membrane separation. | 04-28-2011 |
20110290992 | SYSTEM AND METHOD OF OPTICAL MEASUREMENTS FOR WELLBORE SURVEY - A system of optical measurements for wellbore survey comprises a light conveyable cable, an optical measurement apparatus optically coupled to one end of the light conveyable cable, and a light source optically coupled to another end of the light conveyable cable. The light source produces light used for optical measurements in the optical measurement apparatus. | 12-01-2011 |
20120084050 | Method and System for Azimuth Measurements Using a Gyroscope Unit - Methods and systems for azimuth measurements using a gyroscope unit are disclosed. The method includes acquiring a ratio value between two earth rate components orthogonal to each other by using the gyroscope unit at a measuring position; acquiring three gravity vector components orthogonal to each other at the measuring position; and determining an azimuth with respect to a reference axis predetermined in the gyroscope unit, based on the ratio value, the three gravity vector components and a geodetic latitude of the measuring position. | 04-05-2012 |
20120298570 | FILTRATION APPARATUS AND WATER TREATMENT APPARATUS - A filtration apparatus | 11-29-2012 |
20120305468 | WATER TREATMENT APPARATUS - A water treatment apparatus includes: a mixing element having a mixing tank in which water is mixed with a flocculant added thereto; a flocculation element having a cylindrical flocculation tank into which the water discharged from the mixing element is introduced, and in which the water is kept unexposed to the atmosphere, a for-treatment water inlet which introduces the water to be treated into the flocculation tank from a lower part of the flocculation tank in a tangential direction so as to produce a swirl flow, and a for-treatment water outlet discharging the water to be treated from the upper part of the flocculation tank; and a solid-liquid separation element into which the water to be treated after discharge from the flocculation element is introduced from the flocculation element without being exposed to the atmosphere, and in which the water to be treated is subjected to solid-liquid separation. | 12-06-2012 |
20140286613 | RECEPTACLE CAGE, RECEPTACLE ASSEMBLY, AND TRANSCEIVER MODULE ASSEMBLY - In a receptacle cage, a front EMI finger in a tubular shape serving as a first shield member is provided on the entire periphery of a substantially rectangular module slot. In addition, a gap between the peripheral edge of a slot of a cover, into which a plug connector for the optical module connected to a receptacle connector in a receptacle connector accommodating portion is inserted, and a peripheral surface of a plug connector and a gap between a lower surface of the cover and a surface, on which a printed wiring board is mounted, are shielded by an EMI gasket serving as a second shield member and an EMI gasket serving as a third shield member, respectively. | 09-25-2014 |