Patents by Inventor Tatsuji Hayashi

Tatsuji Hayashi 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).

  • Patent number: 7299670
    Abstract: A preparatory molding roll 4 having a convex push surface 41 is pushed to an outer peripheral surface of a work 1A while the work 1A is chucked by a pair of molds 2 and 3 and is rotated by applying axial propelling force, to bend inward the outer peripheral surface of the work in a radial direction. The work is then chucked by the preparatory molding roll and the upper and lower molds. Next, the preparatory molding roll is moved back and the work is crushed in the axial direction to form a bent portion 1a. A molding roll 5 is pushed to mold the outer shape of the work. A grooved roll 6 is next pushed to the outer peripheral surface of the work and a groove 1b is formed on the outer peripheral surface.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: November 27, 2007
    Assignee: Denso Corporation
    Inventors: Hiroshi Shohara, Tatsuji Hayashi, Yuji Eguchi, Shigeo Hattori
  • Publication number: 20060185414
    Abstract: A preparatory molding roll 4 having a convex push surface 41 is pushed to an outer peripheral surface of a work 1A while the work 1A is chucked by a pair of molds 2 and 3 and is rotated by applying axial propelling force, to bend inward the outer peripheral surface of the work in a radial direction. The work is then chucked by the preparatory molding roll and the upper and lower molds. Next, the preparatory molding roll is moved back and the work is crushed in the axial direction to form a bent portion 1a. A molding roll 5 is pushed to mold the outer shape of the work. A grooved roll 6 is next pushed to the outer peripheral surface of the work and a groove 1b is formed on the outer peripheral surface.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 24, 2006
    Applicant: DENSO CORPORATION
    Inventors: Hiroshi Shohara, Tatsuji Hayashi, Yuji Eguchi, Shigeo Hattori