Patents by Inventor Yuji Kamigauchi

Yuji Kamigauchi 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).

  • Method of operating injection molding machine and injection molding machine
    Patent number: 8329076
    Abstract: In an injection molding machine, dies are connected to a die temperature regulating machine by means of thermal medium supplying pipes and thermal medium returning pipes. A heat exchanger is interposed between the thermal medium returning pipes. The air which has been heated by the heat exchanger is supplied to a hopper through a hot air supplying pipe so as to preheat and dry injection material in the hopper.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: December 11, 2012
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Yuji Kamigauchi
  • Method and apparatus for stopping servo motor
    Patent number: 8134315
    Abstract: The servo motor is controlled by a control signal from a control circuit. A common branch line is separated from a positive common line in accordance with information that a safety door is opened. Thus, a first gate drive circuit group is made inoperative. Then, a second gate drive circuit group is operated to thereby short-circuit the U?, V? and W?phases of the motor to place in a regenerative braking state.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: March 13, 2012
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Yuji Kamigauchi
  • METHOD OF OPERATING INJECTION MOLDING MACHINE AND INJECTION MOLDING MACHINE
    Publication number: 20100320633
    Abstract: In an injection molding machine, dies are connected to a die temperature regulating machine by means of thermal medium supplying pipes and thermal medium returning pipes. A heat exchanger is interposed between the thermal medium returning pipes. The air which has been heated by the heat exchanger is supplied to a hopper through a hot air supplying pipe so as to preheat and dry injection material in the hopper.
    Type: Application
    Filed: June 22, 2010
    Publication date: December 23, 2010
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Yuji KAMIGAUCHI
  • METHOD AND APPARATUS FOR STOPPING SERVO MOTOR
    Publication number: 20090189551
    Abstract: The servo motor is controlled by a control signal from a control circuit. A common branch line is separated from a positive common line in accordance with information that a safety door is opened. Thus, a first gate drive circuit group is made inoperative. Then, a second gate drive circuit group is operated to thereby short-circuit the U?, V? and W?phases of the motor to place in a regenerative braking state.
    Type: Application
    Filed: January 28, 2009
    Publication date: July 30, 2009
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Yuji KAMIGAUCHI