Patents Assigned to Danby Pty. Ltd.
  • Sewer renovation system
    Patent number: 4678370
    Abstract: A method for lining a sewer pipe incorporate the steps of continuously forming a liner of helically wound strip, the strip having complementary engaging side formations, and feeding the liner into the sewer pipe. The ends of the liner are sealed to the sewer pipe and cementitious grout is pumped under pressure into the space between the liner and the sewer pipe to bond the liner is position.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: July 7, 1987
    Assignee: Danby Pty. Ltd.
    Inventor: Peter Allen