Yamaichi Electronics Co., Ltd.

Schlumberger Technology Corporation

Other

Sony Corporation

Kawasaki Steel Corporation

Tamagawa Seiki Co., Ltd.

Shigeru Sato

Toshiyasu Ito

Juei Igarashi

Tsutomu Yamate

Yosuke Takai

Akira Kamiya

Kiyoshi Abe

Yves Barriol

Tsunehiko Imamura

Takamitsu Sasaki

Bikash Kumar Sinha

Anthony Frank Veneruso

Takashi Torii

Noriyuki Matsumoto

Jimmy Lawrence

Charles Woodburn

Yoshiharu Ishii

Shigeo Daito

Takahiro Sakamoto

Noriaki Furuta

Jiro Takeda

Yasuhiro Yamaguchi

Lionel Beneteau

Teruo Nakamura

Masaaki Oshima

Sogo Kuroiwa

Eiji Matsuda

Hideyuki Kamei

Tsutomu Matsubara

Shigeji Nakajima

Masato Koyasu

Atsushi Kayama

So Suzuki

Toshifumi Takada

Shinichi Motegi

A gyroscope package, system and method for use in a downhole tool suitable are provided. The gyroscope package, system and method includes a housing coupleable with a downhole tool, a gyroscope body within the housing, and an inductive-type MEMS gyroscope. The MEMS gyroscope includes a magnetic shield disposed around the inductive-type MEMS gyroscope to magnetically shield the inductive-type MEMS gyroscope.

Apparatus, system and method of a magnetically shielded wellbore gyroscope

When an optical module is inserted into a compartment of a receptacle cage in a state where a heatsink is detached from the receptacle cage, a tip end portion of a protection wall portion of the optical module comes into contact with end portions of guide pieces of a guide plate even if the optical module is inserted with the protection wall portion being lifted up, and the tip end portion of the protection wall portion is thereby pushed down and guided to a clearance below the guide pieces.

Receptacle assembly and transceiver module assembly

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.

Method and system for azimuth measurements using a gyroscope unit

Apparatus to provide a time reference are disclosed herein. An example apparatus disclosed herein includes a resonator. A first cap is coupled to a first side of the resonator to define a first cavity, and a second cap is coupled to a second side of the resonator to define a second cavity. The first cavity and the second cavity provide a first vacuum in which the resonator is to resonate. The resonator, the first cap and the second cap have substantially identical thermal expansion coefficients. The example apparatus also includes a vacuum chamber surrounding the resonator, the first cap and the second cap. The vacuum chamber is to provide a second vacuum in which the resonator, the first cap and the second cap are disposed. A frequency of resonance of the resonator in the first vacuum is to provide a time reference.

Apparatus to provide a time reference

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.

Receptacle cage, receptacle assembly, and transceiver module assembly

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.

Vibrating helical spring sensors and methods to operate the same

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.

Pressure transducer

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.

Method and apparatus for wellbore survey using inertial sensors

A pressure transducer comprising a housing and a piezoelectric resonator in the housing, wherein the resonator is made of a piezoelectric crystal having Curie temperature greater than 1000&#xb0; C. or having no Curie temperature up to its melting point greater than 1000&#xb0; C., and the piezoelectric crystal has a piezoelectric constant more than two times greater than that of quartz.

Pressure transducer with piezoelectric crystal for harsh environment use

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.

Apparatus for azimuth measurements using gyro sensors

An integrated circuit ('IC') connector includes a card detection contact terminal which is provided substantially at a central part of a housing unit and between a first grounding contact terminal and a second grounding contact terminal, and first and second contact terminals located so as to face each other along a direction of mounting and demounting of a first IC card, the first contact terminals provided adjacent to and both sides of the card detection contact terminal, the second contact terminals provided adjacent to both sides of the card detection contact terminal.

Multiple integrated circuit card connector with a card detection terminal

A card insertion slot in the card connector through which two types of cards, large and small cards, can be selectively installed in a card accommodation space include first and second guideways in corresponding to the sizes of the cards. The card connector includes first and second contacts, a lock bracket configured to detect the width of the large card, an actuator configured to be rotatable, and a partition member including a partition plate configured to be movable. When the large card is inserted into the card connector, the lock bracket is moved from the first position to the second position. When the large card is further fed into the card connector, the actuator is rotated from the first position to the second position, and the partition plate is moved from the first position to the second position.

Card connector

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.

Method and system 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.

When inserting a MEMORY STICK MS, the tip portion of the MEMORY STICK MS rotates and detrudes the contact pressing plate, so that contact portions of contact terminalsfor a SD card SD are pressed down by a rim of slitsof the contact pressing plateup to a position where the contact portions do not interfere with the MEMORY STICK MS.

Growing community of inventors

Chiba, Japan

Shigeru Sato