Radius Systems Limited

Bg Corporation

Uponor, Inc.

Caldervale Technology Limited

Derek John Muckle

Ian D Smith

Gordon Leslie Lilley

Mario John Christodoulou

Steven Garfield Farrar

Paul Nicholas Myers

Zahid Shah

Andrew Jenner

Lawrence Adam Faulkner Richards

Alan John Dickinson

Method of lining a tubular structure with a plastics liner pipe comprising the steps of: &#x2014;temporarily reducing an outside diameter of the liner pipe by passing the liner pipe through a roller system; &#x2014;cooling the liner pipe once its outside diameter has been reduced and applying a thermal restraint; &#x2014;transporting the liner pipe to an installation site remote from the roller system; &#x2014;removing said thermal restraint; and &#x2014;installing the liner pipe in said tubular structure at said installation site.

Method of lining a tubular structure

An adaptor assembly to be fitted onto a service pipe comprising a host pipe lined with a lining pipe is provided. The adaptor assembly includes a body to seal with the host pipe, a bore extending along a longitudinal axis of said body, and a compression element mountable on and displaceable relative to the body. The adaptor assembly includes an axially translatable piston, an annular flange protruding into said bore, and a grip ring disposable between said piston and said flange and having an inner radial surface to grip an outer radial surface of the lining pipe. A slip spacer is disposable between the compression element and the piston to transmit axial load but substantially prevent transmission of torque therebetween. The compression element is moveable to axially displace the piston causing the grip ring to bear against the inclined annular flange and grip radially inwardly against the outer radial surface.

Adaptor assembly

A moulded electrofusion fitting for connection to a plastics pipeline comprises a hollow body formed with a tubular opening that has a longitudinal axis and is adapted to receive and end of the pipeline as a close sliding fit. An electrofusion element is formed in the internal surface in the opening, spaced from its end. Fingers are on the end of the opening, circumferentially spaced around the opening and separated by slots between them. Cam surfaces in the form of ribs are defined on the fingers, and a grip ring is received on the fingers and includes wedge elements in the form of grooves. These are adapted to fit the ribs so that, when a pipeline is inserted in the opening and the grip ring is rotated about said axis, the ribs and grooves engage to press the fingers radially inwardly against the reaction of the grip ring, whereby said pipe is gripped by said grip ring and centralized in the opening. The grip ring may be integrated with a terminal pin, a bayonet slot of the grip ring accommodating the terminal pin, a shroud boss formed on the grip ring around the base of the bayonet slot.

Electrofusion fitting

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.

Pipe preparing tool V

Lining a pipe

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Leicestershire, United Kingdom

Derek John Muckle