Patents Represented by Attorney, Agent or Law Firm Woodbrige & Associates, P.C.
  • Process for forming sheet products
    Patent number: 6468461
    Abstract: In a process and apparatus for producing long plastic sheets by pressing molten plastic materials between the forming roller and the forming drum unit, the forming drum unit including a thin cylindrical sleeve supported from inside by a drum support unit and pressed against the outer surface of the forming roller to deform elastically in a curve along the outer surface of the forming roller as it rotates, thus maintaining a relatively long contact length.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: October 22, 2002
    Assignee: Chiba Machine Industry Corporation
    Inventors: Koji Sumiyoshi, Keiichi Ueba