Patents Assigned to Uponor Limited
  • Patent number: 6998588
    Abstract: A method for the manufacture of a heat fusion fitting, which comprises i) forming a body (1) comprising at least a first layer of a first cross-linked polymeric material, ii) embedding or partly embedding a ferromagnetic heating element (11, 12) in a second polymeric material (13, 14) to form an insert (7, 8), the ferromagnetic heating element (11, 12) having a Curie temperature equal to or greater than the crystalline melting point or softening point of the second polymeric material (13, 14), and iii) assembling the body and the insert (7, 8) to form the fitting.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: February 14, 2006
    Assignee: Uponor Limited
    Inventors: David Charles Harget, Jyri Jarvenkyla
  • 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
  • Patent number: 6818870
    Abstract: A method for the manufacture of a heat fusion fining, which comprises i) forming a body (1) comprising at least a first layer of a first cross-linked polymeric material, ii) embedding or partly embedding a ferromagnetic heating element (11, 12) in a second polymeric material (13, 14) to form an insert (7, 8), the ferromagnetic heating element (11, 12) having a Curie temperature equal to or greater than the crystalline melting point or softening point of the second polymeric material (13, 14), and iii) assembling the body and the insert (7, 8) to form the fitting.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: November 16, 2004
    Assignee: Uponor Limited
    Inventors: David Charles Harget, Jyri Jarvenkyla
  • Publication number: 20030209904
    Abstract: A method for the manufacture of a heat fusion fining, which comprises i) forming a body (1) comprising at least a first layer of a first cross-linked polymeric material, ii) embedding or partly embedding a ferromagnetic heating element (11, 12) in a second polymeric material (13, 14) to form an insert (7, 8), the ferromagnetic heating element (11, 12) having a Curie temperature equal to or greater than the crystalline melting point or softening point of the second polymeric material (13, 14), and iii) assembling the body and the insert (7, 8) to form the fitting.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 13, 2003
    Applicant: Uponor Limited, a United Kingdom Corporation
    Inventors: David Charles Harget, Jyri Jarvenkyla
  • Patent number: 6585924
    Abstract: A method for the manufacture of a heat fusion fitting, which comprises i) forming a body (1) comprising at least a first layer of a first cross-linked polymeric material, ii) embedding or partly embedding a ferromagnetic heating element (11, 12) in a second polymeric material (13, 14) to form an insert (7, 8), the ferromagnetic heating element (11, 12) having a Curie temperature equal to or greater than the crystalline melting point or softening point of the second polymeric material (13, 14), and iii) assembling the body and the insert (7, 8) to form the fitting.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 1, 2003
    Assignee: Uponor Limited
    Inventors: David Charles Harget, Jyri Jarvenkyla
  • Patent number: 6016849
    Abstract: A plastic pipe which includes an inner core and an outer protective layer bonded thereto, in which the dimensions of the pipe and the protective layer are such that the ratio of the external diameter of the pipe to the thickness of the protective layer is at least 70, preferably at least 100, and the cohesive strength of the outer protective layer, excluding any lines of weakness, at least at the ends of the pipe is greater than the peel strength of the adhesive bond between the outer protective layer and the inner core.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: January 25, 2000
    Assignee: Uponor Limited
    Inventors: David Charles Harget, Mikael Andersson, Eino Matias Holso, Jyri Jaakko Jarvenkyla
  • Patent number: 5951058
    Abstract: A pipe joint which is made of a hollow body member having a passageway therethrough for receiving a pipe, a segmented gripper means positioned in a first circumferential tapered channel in the hollow body member and moveable axially within the passageway. The arrangement is such that, in use, when forces are applied tending to separate the pipe from the hollow body member the segmented gripper means can move axially along the tapered channel into gripping engagement with the pipe.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: September 14, 1999
    Assignee: Uponor Limited
    Inventors: Alan J. Dickinson, Giles C. Pettit
  • Patent number: 5662358
    Abstract: An adaptor (1) and method for fitting or replacing a branch-off connection in a fluid distribution main in which the adaptor (1) is inserted into a hole in the wall of the distribution main, the adaptor (1) comprising a rigid body (2) with an internal bore (3) therein, the internal bore (3) being closed with a displaceable blocking element (10), and a service pipe (16) is inserted into the internal bore (3) of the adaptor (1) so as to displace the blocking element (10) and open the internal bore (3) of the adaptor (1).
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: September 2, 1997
    Assignee: Uponor Limited
    Inventors: George Albert Lees, Stuart Nigel Godfrey