Patents Assigned to Dymco Limited
  • Circular-shaped metal structure and method of fabricating the same
    Patent number: 7229398
    Abstract: A circular-shaped metal structure is fabricated by plastic-working and has a wall thickness in the range of 0.03 mm to 0.09 mm both inclusive. A film composed of one of (a) silicon and fluorocarbon resin and (b) copper is coated on a surface of the circular-shaped metal structure.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: June 12, 2007
    Assignees: Dymco Limited, K.K. Endo Seisakusho
    Inventors: Masaru Sakuma, Youji Ito
  • Circular-shaped metal structure
    Patent number: 6898397
    Abstract: A circular-shaped metal structure formed by spinning working has a thickness equal to or smaller than 0.09 mm. The structure may be used as a photosensitive drum or fixing belt in an electrophotographic printer.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: May 24, 2005
    Assignees: K.K. Endo Seisakusho, Dymco Limited
    Inventors: Masaru Sakuma, Youji Ito
  • Circular-shaped metal structure and method of fabricating the same
    Publication number: 20040098855
    Abstract: A circular-shaped metal structure is fabricated by plastic-working and has a wall thickness in the range of 0.03 mm to 0.09 mm both inclusive. A film composed of one of (a) silicon and fluorocarbon resin and (b) copper is coated on a surface of the circular-shaped metal structure.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 27, 2004
    Applicants: Dymco Limited, K.K. Endo Seisakusho
    Inventors: Masaru Sakuma, Youji Ito
  • Circular-shaped metal structure, method of fabricating the same, and apparatus for fabricating the same
    Patent number: 6561001
    Abstract: A method of fabricating a circular-shaped metal structure, includes the steps of (a) rotating a pipe around an axis thereof, the pipe being composed of a plastic-workable metal, and (b) applying drawing to an outer wall of the pipe with the pipe being kept rotated, to reduce a wall thickness of the pipe and lengthen a wall of the pipe. A resultant circular-shaped metal structure fabricated by the method could have a thickness equal to or smaller than 0.09 mm.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: May 13, 2003
    Assignees: K.K. Endo Seisakusho, DYMCO Limited
    Inventors: Masaru Sakuma, Youji Ito
  • Circular-shaped metal structure, method of fabricating the same, and apparatus for fabricating the same
    Publication number: 20010007846
    Abstract: A method of fabricating a circular-shaped metal structure, includes the steps of (a) rotating a pipe around an axis thereof, the pipe being composed of a plastic-workable metal, and (b) applying drawing to an outer wall of the pipe with the pipe being kept rotated, to reduce a wall thickness of the pipe and lengthen a wall of the pipe. A resultant circular-shaped metal structure fabricated by the method could have a thickness equal to or smaller than 0.09 mm.
    Type: Application
    Filed: December 1, 2000
    Publication date: July 12, 2001
    Applicant: DYMCO LIMITED and K.K. ENDO SEISAKUSHO
    Inventors: Masaru Sakuma, Youji Ito