Patents Assigned to C-tech Ltd
  • Pipe coupling for plastic pipes
    Patent number: 6450547
    Abstract: A pipe coupling according to the invention comprises a socket (2) of glass-fiber reinforced plastics material and a membrane (4) of elastic material which is formed at at least one end as a seal and comprises a sleeve section (8). Where the membrane is formed as a seal, it has at the end where the pipe (20) is to be introduced (thus at the outer end), a short cylindrical band (14). In the cylindrical band the membrane has a constant wall thickness, which is backed by the glass-fiber reinforced socket material of the pipe coupling.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: September 17, 2002
    Assignee: C-tech Ltd
    Inventor: Börge Carlström