Patents by Inventor Atushi Koide

Atushi Koide 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).

  • Screw driving method for injection molding machine
    Patent number: 5474733
    Abstract: A screw driving mechanism E which uses a hydraulic cylinder (main cylinder) 2 arranged on the same axis with respect to a screw 3 so as to allow the screw 3 to perform frontward and rearward driving. A pair of auxiliary cylinders 4 and 5 are arranged in parallel at both sides of the main cylinder 2, and the forward ends of piston portions 4p and 5p of the auxiliary cylinders 4 and 5 are joined to the forward end of a piston portion 2p of the main cylinder 2 via a joint mechanism 6. This makes it possible to select a plurality of different injection pressures.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 12, 1995
    Assignee: Nissei Plastic Industrial Co., Ltd.
    Inventors: Atushi Koide, Koichi Matsubayashi, Junichi Shimizu