Patents by Inventor Raiji Shimomura

Raiji Shimomura 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).

  • Patent number: 5274750
    Abstract: In accordance with levels of skillfulness of operators, guidance of a robot teaching apparatus is automatically changed for facilitated use by beginners and skilled operators. Teaching is performed through an interactive procedure with the aid of a display of message for manipulation guidance and a menu for input selection. A key manipulation path is automatically determined on the basis of various experience factors. For a skilled operator, operation up to generation of a final function display is executed in an automated manner.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: December 28, 1993
    Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd.
    Inventors: Tsukasa Shiina, Kazuyoshi Teramoto, Masao Oura, Raiji Shimomura
  • Patent number: 5170034
    Abstract: A method and a system for controlling a welding robot is disclosed, in which at the time of restarting the welding operation after a provisional welding stoppage which may occur during a series of welding operation by a robot, the welding operation is restarted from a position receded along the welding line thus far followed. A memory unit sequentially holds the position data along the welding line during the welding operation. The position receded along the welding line is calculated in accordance with the position data held in the memory unit during the provisional welding operation stoppage.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: December 8, 1992
    Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd.
    Inventors: Tatsuya Seshimo, Shigeyoshi Yokoyama, Raiji Shimomura, Tukasa Shiina
  • Patent number: 4891765
    Abstract: A control system including a plurality of machine units each implementing a role for a specific working, the system comprising independent operation control units which direct the machine units to perform independent operations, at least one concerted operation control unit which directs machine units to perform concerted-operations and control means which operates on machine units designated to perform a concerted operation to work under control of the concerted operation control unit and operates on said machine unit left aside from the concerted operation to work under control of the independent operation control units. The arrangement enables a plurality of machine units to have a concerted operation or quit a concerted operation, allowing a machine unit which is put aside from said concerted operation to implement independent operation, whereby a high-efficiency control system is realized.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: January 2, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Kouichi Hatori, Raiji Shimomura
  • Patent number: 4612487
    Abstract: A system and method for controlling an industrial robot wherein an adjustable optional region of a robot movement which differs from an inherent movable region defining the outer limits of robot movement and which is contained within the inherent movable region, is set by loading numerical data representing the shape of a workpiece to be handled by the robot, into a controller for the robot. During operation, the objective of the robot is controlled by the numerical data and thereby limited in movement to the optional region within said inherent movable region. The operational region is set in a rectangular coordinate system different from the operating coordinate system inherent to the robot, thereby defining a robot movement space which can be visualized and readily discerned by an operator.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: September 16, 1986
    Assignee: Hitachi, Ltd.
    Inventor: Raiji Shimomura
  • Patent number: 4095481
    Abstract: A joint mechanism of a manipulator, according to the present invention, consists of a first joint having its rotating shaft aligned with the Z-axis in the X-Y-Z Cartesian coordinate system established at a desired position in a working space, a second joint connected to the rotating shaft of the first joint and having its rotating shaft positioned within the X-Y coordinate plane, a third joint, connected to the rotating shaft of the second joint and having its rotating shaft aligned with the vector passing through the origin of the Cartesian coordinate system, and an arm assembly connected to the rotating shaft of the third joint and comprising a link mechanism which is driven so that a wrist connected to said arm assembly may be always moved on the prolongation line of the vector, to thereby provide a simplified joint mechanism of a manipulator having a redundant degree of freedom of the posture completely independent to the position of the wrist.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: June 20, 1978
    Assignee: Hitachi, Ltd.
    Inventors: Masuo Kasai, Kanji Kato, Yasuhide Matsumura, Kiyoo Takeyasu, Raiji Shimomura
  • Patent number: 4050293
    Abstract: In a detecting device of the unevenness of a curved surface of an object, the detecting device is characterized by providing means for seizing or holding the object, means for moving the seizing means in a predetermined direction, a variation detector for detecting the presence of a projection or a recess on the surface of the object, a supporting means including at least two contact members which contact the surface of the object for supporting the variation detector at a position corresponding to the position of the surface, and means for guiding the supporting means in response to the position variation of the surface.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: September 27, 1977
    Assignees: Hitachi, Ltd., Hitachi Metals, Ltd.
    Inventors: Raiji Shimomura, Toru Habu, Hisaaki Itoh, Naomi Sakai, Tatsuo Goto