Patents by Inventor Syoji Hayasi

Syoji Hayasi 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 for automatically setting a condition of an injection molding speed
    Patent number: 5733486
    Abstract: A reference pressure of a melted material injected into a mold cavity of a mold is set at each of a plurality of positions in a barrel, a nozzle, and the mold cavity as a function of injection passing time from a start of an injecting process or a function of a distance of movement of an injection plunger, and the movement of the plunger is started at a temporarily constant injection speed. The pressure of the melted material is sensed at the plurality of positions in any order during an injection passing time from the start of the injection process wherein the plunger is started to move or during the movement of the plunger.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: March 31, 1998
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Syoji Hayasi, Hirosi Katuta