Patents by Inventor Ryuji Uda

Ryuji Uda 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 manufacturing hydraulic shock absorber and production system for shock absorber in plant
    Patent number: 7065852
    Abstract: A method of manufacturing a hydraulic shock absorber is provided with a piston main body manufacturing step 21 including the process of sintering of the piston main body and the process of forming of the molded sealing are performed, a piston assembly manufacturing step 22 including process of forming of the throttle oil passage on the piston main body manufactured in the piston main body manufacturing step 21 and the assembly of valves onto the piston main body, and a hydraulic shock absorber manufacturing step 23 for manufacturing a hydraulic shock absorber using the piston assembly. In this manner, it is not necessary to provide for an intermediate inventory between each process. Furthermore inventory monitoring processes are simplified in the piston main body manufacturing step and productivity is increased since it is not necessary to monitor the inventory level with respect to a plurality of piston assembly types with different valves or throttle hydraulic passages.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: June 27, 2006
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Kimio Sudo, Ryuji Uda
  • Method of manufacturing hydraulic shock absorber and production system for shock absorber in plant
    Publication number: 20040088850
    Abstract: A method of manufacturing a hydraulic shock absorber is provided with a piston main body manufacturing step 21 including the process of sintering of the piston main body and the process of forming of the molded sealing are performed, a piston assembly manufacturing step 22 including process of forming of the throttle oil passage on the piston main body manufactured in the piston main body manufacturing step 21 and the assembly of valves onto the piston main body, and a hydraulic shock absorber manufacturing step 23 for manufacturing a hydraulic shock absorber using the piston assembly. In this manner, it is not necessary to provide for an intermediate inventory between each process. Furthermore inventory monitoring processes are simplified in the piston main body manufacturing step and productivity is increased since it is not necessary to monitor the inventory level with respect to a plurality of piston assembly types with different valves or throttle hydraulic passages.
    Type: Application
    Filed: December 11, 2003
    Publication date: May 13, 2004
    Inventors: Kimio Sudo, Ryuji Uda