Patents Assigned to Cofpa
  • Conveyor belt constituted by plastic spirals
    Patent number: 4839213
    Abstract: A conveyor belt such as a paper-making fabric, said belt being made of spirals (2, 3) assembled together by rods (5) or by imbrication. With a view to reducing the permeability or to changing the surface condition, it has a generally flat member (7) which is inserted inside the spirals (2, 3) so as to completely or partially fill the spaces between or inside the spirals.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: June 13, 1989
    Assignee: Cofpa
    Inventor: Maurice Gauthier
  • Method for steaming a papermaker's fabric
    Patent number: 4683624
    Abstract: A method for seaming the ends of a papermaker's fabric during installation on papermaking equipment is disclosed.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: August 4, 1987
    Assignee: Cofpa
    Inventor: Marcel Dufour
  • Papermaker's fabric constituted by plastic spirals
    Patent number: 4567077
    Abstract: A conveyor belt such as a paper-making fabric, said belt being made of spirals (2, 3) assembled together by rods (5) or by imbrication. With a view to reducing the permeability or to changing the surface condition, it has a generally flat member bearing holes or notches (7) which is inserted inside the spirals (2, 3) so as to completely or partially fill the spaces between or inside the spirals.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: January 28, 1986
    Assignee: Cofpa
    Inventor: Maurice Gauthier