Patents Assigned to Caldervale Technology Limited
  • Patent number: 8057215
    Abstract: A device for the preparation of pipe ends, prior to jointing them together using an inserted close-fitting spool and an external close-fitting sleeve, consists of a plain cylindrical mandrel (10) adapted to be firmly fixed centrally inboard of an end zone of the bore of a pipe (12) so as to project from the end of the pipe, a hydraulic cylinder (46) adapted to be removeably mounted co-axially on the projecting end of the mandrel, and a piston (48) in the cylinder slideable along the mandrel and adapted to carry an interchangeable annular tool, whereby the tool can be force fed axially along the mandrel into the pipe to modify the bore thereof.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: November 15, 2011
    Assignee: Caldervale Technology Limited
    Inventors: Paul Nicholas Myers, Steven Garfield Farrar, Gordon Leslie Lilley
  • Patent number: 6968762
    Abstract: This invention relates to pipe preparing tools, and more particularly to a novel pipe preparing tool suitable for cutting, scoring or penetrating a surface of a plastics pipes.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: November 29, 2005
    Assignees: Caldervale Technology Limited, Uponor Limited
    Inventors: Derek Muckle, Gordon Leslie Lilley, Ian Smith, Steven Garfield Farrar, Paul Nicholas Myers