Resource Engineering and Manufacturing Corp.

Inductotherm Heating & Welding Ltd

John W Betteridge

Milburn L Hart

Ronald E Carlson, Sr

Gregory H Carlson

Stephen William Baskerville

Derek Humphries

William Fenwick

Michael Lee

A modular electric induction heating and coating apparatus and method for coating, heating and/or coating and heating (and vice versa) the exterior surface of a pipe section within a pipe treatment region is provided. The apparatus comprises an interchangeable central main frame assembly removably attached to an outer drive frame assembly on each side of the central main frame assembly. An interchangeable induction coil assembly can be mounted in a coil main frame assembly of the central main frame assembly. The coil main frame assembly can close around a pipe section for electric induction heating of the pipe section within the pipe treatment region via a driver system in a central top drive frame assembly. The outer drive frame assemblies include mounting and rotational drive assemblies for interchangeable coating head cartridges that can coat the section of the pipe in the pipe treatment region.

Electric induction heating and coating of the exterior surface of a pipe

An apparatus and method for heating and coating a section of a pipe comprising a plurality of induction type heaters supported in spaced circumferential relation around the pipe section, the heaters having relatively flat and hollow induction coils therein, the coils of the induction heaters being oriented in a cylindrical surface adjacent to, and parallel with, the surface of the pipe, a coating dispenser mounted between a pair of induction heaters for dispensing a coating material on the surface of the pipe, the heaters and dispenser being rotated as a single assembly around the pipe while simultaneously applying an alternating electric potential to the induction heaters to heat the pipe to a suitable application temperature for a coating material, the coating material being applied to the thus-heated pipe through the dispenser while continuing to rotate the assembly, water being passed through the copper coils to keep them cool during the heating of the pipe.

Combined induction heating and coating system for pipe weld joints

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Essex, United Kingdom

John W Betteridge