Patents by Inventor Tatsuo Mimura

Tatsuo Mimura 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: 6008497
    Abstract: A laser apparatus comprises storage means for storing a power source voltage of each pulse at the time of continuous pulse oscillation for one cycle, with each voltage correlated with an identifier which specifies the respective pulse, and output control means for, when a pulse is generated, reading from the storage means the source voltage of a pulse having the same identifier, and performing pulse oscillation on the basis of the source voltage. Thus the influence of the spiking phenomenon during a burst mode operation is eliminated as much as possible, and thereby the accuracy of laser beam machining is still more improved.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: December 28, 1999
    Assignee: Komatsu Ltd.
    Inventors: Hakaru Mizoguchi, Osamu Wakabayashi, Yukio Kobayashi, Yoshiho Amada, Tatsuo Mimura
  • Patent number: 5350547
    Abstract: An expert system for retrieving molding conditions, in which a statistical technique is added to the functions of the conventional expert system, causes of defects are inferred from the records of countermeasures taken and inputted defect occurrence situation, conditions for temporary molding are obtained while repeating test molding, qualitative defects are extracted from defects occurred, a boundary of a region in which defects occur is determined with decision analysis of qualitative defects extracted with the use of the record of countermeasures as above, a condition for molding to eliminate the qualitative defects is determined on the basis of the boundary of region of defects occurrence, quantitative defects are extracted from defects occurred, and molding conditions for eliminating the quantitative defects are determined by performing analysis of variance depending on design of experiment with the quantitative defects extracted from the record of countermeasures, whereby the frequency of experiment is
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: September 27, 1994
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Hiroyoshi Yamaguchi, Shuji Murai, Tatsuo Mimura
  • Patent number: 5163056
    Abstract: An apparatus for carrying out serial control includes a single main controller and a plurality of node controllers for directly controlling a variety of sensors and actuators. The node controllers are serially connected to the main controller. The main controller receives a data signal row which is successively transferred through the node controllers and then indirectly and centrally controls sensor data derived from the sensors, as well as actuator control data transmitted to the actuators. Data is transmitted from the data signal row to the sensors or the actuator to be controlled and vice versa in each node controller. An error code is added to the data signal row which is to be transferred to a succeeding port under logic conditions indicating the occurrence of an error. The occurrence of an error is confirmed by inspecting an error check code which is previously added to the data signal row to check whether an error has or has not occurred between the node controllers.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: November 10, 1992
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Masao Hagiwara, Masakazu Moritoki, Tatsuo Mimura
  • Patent number: 4984289
    Abstract: With respect to correcting of a forward movement course of the underground excavator, the control apparatus is so constructed that a positional deviation of the pilot head (20) relative to an excavation planned value is obtained on the basis of detecting of the existent position assumed by the pilot head (20) and the excavation angle correcting means (S1, S2, 21, 23, 41, 71, 72, 73, 80) is provided for automatically correcting an excavating angle of the excavating head (10) on the basis of the positional deviation so as to allow controlling to be achieved automatically.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: January 8, 1991
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Shuji Arakawa, Tatsuo Mimura