Patents Assigned to Uponor Limited
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Patent number: 6998588Abstract: 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: GrantFiled: June 3, 2003Date of Patent: February 14, 2006Assignee: Uponor LimitedInventors: David Charles Harget, Jyri Jarvenkyla
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Patent number: 6968762Abstract: 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: GrantFiled: May 19, 2000Date of Patent: November 29, 2005Assignees: Caldervale Technology Limited, Uponor LimitedInventors: Derek Muckle, Gordon Leslie Lilley, Ian Smith, Steven Garfield Farrar, Paul Nicholas Myers
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Patent number: 6818870Abstract: 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: GrantFiled: June 3, 2003Date of Patent: November 16, 2004Assignee: Uponor LimitedInventors: David Charles Harget, Jyri Jarvenkyla
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Publication number: 20030209904Abstract: 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: ApplicationFiled: June 3, 2003Publication date: November 13, 2003Applicant: Uponor Limited, a United Kingdom CorporationInventors: David Charles Harget, Jyri Jarvenkyla
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Patent number: 6585924Abstract: 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: GrantFiled: March 31, 2000Date of Patent: July 1, 2003Assignee: Uponor LimitedInventors: David Charles Harget, Jyri Jarvenkyla
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Patent number: 6016849Abstract: 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: GrantFiled: October 22, 1997Date of Patent: January 25, 2000Assignee: Uponor LimitedInventors: David Charles Harget, Mikael Andersson, Eino Matias Holso, Jyri Jaakko Jarvenkyla
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Patent number: 5951058Abstract: 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: GrantFiled: September 22, 1998Date of Patent: September 14, 1999Assignee: Uponor LimitedInventors: Alan J. Dickinson, Giles C. Pettit
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Patent number: 5662358Abstract: 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: GrantFiled: June 16, 1995Date of Patent: September 2, 1997Assignee: Uponor LimitedInventors: George Albert Lees, Stuart Nigel Godfrey