Patents Assigned to Esdan Pty. Ltd.
  • Method of manufacture of electric fusion pipe fittings
    Patent number: 4470193
    Abstract: Electric fusion pipe fittings for use in connecting plastics pipes may be manufactured by forming a groove (6) in a surface (2) of a filling (1) and laying a wire (8) in groove (6). Preferably groove (6) is formed by incision and the wire layed by groove cutting tool (4).
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: September 11, 1984
    Assignee: Esdan Pty. Ltd.
    Inventors: Soumar Karel, Earl Erling