Patents by Inventor Youji Hamajima

Youji Hamajima 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).

  • Slide guiding device
    Patent number: 7785009
    Abstract: A slide guiding device in a machine tool includes slide guiding surfaces provided on a bed, sliding surfaces provided on a column, which is guided on the bed for movement on the same, and movable on the slide guiding surfaces, oil grooves each with a first supply hole for supplying lubrication oil to contact surface areas between the sliding surfaces and the slide guiding surfaces, and oil pockets formed independently of the oil grooves for retaining the lubrication oil supplied to the contact surface areas between the sliding surfaces and the slide guiding surfaces.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: August 31, 2010
    Assignee: JTEKT Corporation
    Inventors: Toshiyuki Saito, Toshikazu Sakei, Tomio Aso, Youji Hamajima
  • Slide Guiding Device
    Publication number: 20070201775
    Abstract: A slide guiding device in a machine tool includes slide guiding surfaces provided on a bed, sliding surfaces provided on a column, which is guided on the bed for movement on the same, and movable on the slide guiding surfaces, oil grooves each with a first supply hole for supplying lubrication oil to contact surface areas between the sliding surfaces and the slide guiding surfaces, and oil pockets formed independently of the oil grooves for retaining the lubrication oil supplied to the contact surface areas between the sliding surfaces and the slide guiding surfaces.
    Type: Application
    Filed: March 18, 2005
    Publication date: August 30, 2007
    Applicant: JTEKT Corporation
    Inventors: Toshiyuki Saito, Toshikazu Sakei, Tomio Aso, Youji Hamajima