Patents Assigned to Westaflex-Werk L.U.F. Westerbarkey GmbH & Co.
  • Method of manufacturing helically wound tubes and tubes manufactured by said method
    Patent number: 4481978
    Abstract: A typical embodiment of the invention produces helically wound tubes from strips of thin plate in which adjacent edges are provided with interlocking ribs that are folded over to form a compressed bead. A further rib is formed at the bead, the bead providing one of the sides of the new-formed rib.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: November 13, 1984
    Assignee: Westaflex-Werk L.U.F. Westerbarkey GmbH & Co.
    Inventor: Manuel Escandell