Patents by Inventor Tsunehiko Imamura

Tsunehiko Imamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for azimuth measurements using gyro sensors
    Patent number: 8061048
    Abstract: 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.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 22, 2011
    Assignees: Schlumberger Technology Corporation, Tamagawa Seiki Co., Ltd.
    Inventors: Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi, Tsutomu Yamate
  • APPARATUS FOR AZIMUTH MEASUREMENTS USING GYRO SENSORS
    Publication number: 20100223796
    Abstract: 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.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 9, 2010
    Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION, TAMAGAWA SEIKI CO., LTD.
    Inventors: TSUNEHIKO IMAMURA, AKIRA KAMIYA, SHIGERU SATO, JUEI IGARASHI, TSUTOMU YAMATE
  • Apparatus for azimuth measurements using gyro sensors
    Patent number: 7712223
    Abstract: 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.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: May 11, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi, Tsutomu Yamate
  • APARATUS FOR AZIMUTH MEASUREMENTS USING GYRO SENSORS
    Publication number: 20100077623
    Abstract: 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.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Applicants: Schlumberger Technology Corporation, Tamagawa Seiki Co., Ltd.
    Inventors: TSUNEHIKO IMAMURA, AKIRA KAMIYA, SHIGERU SATO, JUEI IGARASHI, TSUTOMU YAMATE