Patents by Inventor Yoshiaki Muraoka

Yoshiaki Muraoka 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).

  • Surveying system
    Patent number: 6462810
    Abstract: The present invention provides a surveying system, which comprises a survey instrument main unit for receiving and detecting a guide light projected from a collimation target, a horizontal rotating mechanism 38 for rotating the survey instrument main unit in a horizontal direction, a control unit 37 for controlling the horizontal rotating mechanism, a rough direction detecting unit 24 capable to detect the guide light from all horizontal directions, and a precise direction detecting unit 25 arranged in a direction to collimate the survey instrument main unit from a telescope and detects said guide light only in a range of a predetermined angle, wherein said control unit controls the horizontal rotating mechanism so that a direction of the survey instrument main unit is aligned to the collimation target based on a result of a detection from said rough direction detecting unit, and collimates the survey instrument main unit is collimated to the collimation target based on a result of a detection from the precis
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: October 8, 2002
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Yoshiaki Muraoka, Ikuo Ishinabe, Sho-ujiro Takahashi
  • SURVEYING SYSTEM
    Publication number: 20020093646
    Abstract: The present invention provides a surveying system, which comprises a survey instrument main unit for receiving and detecting a guide light projected from a collimation target, a horizontal rotating mechanism 38 for rotating the survey instrument main unit in a horizontal direction, a control unit 37 for controlling the horizontal rotating mechanism, a rough direction detecting unit 24 capable to detect the guide light from all horizontal directions, and a precise direction detecting unit 25 arranged in a direction to collimate the survey instrument main unit from a telescope and detects said guide light only in a range of a predetermined angle, wherein said control unit controls the horizontal rotating mechanism so that a direction of the survey instrument main unit is aligned to the collimation target based on a result of a detection from said rough direction detecting unit, and collimates the survey instrument main unit is collimated to the collimation target based on a result of a detection from the precis
    Type: Application
    Filed: March 14, 2000
    Publication date: July 18, 2002
    Inventors: Yoshiaki Muraoka, Ikuo Ishinabe, Sho-Ujiro Takahashi