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US 2014/0151368 A1Published application
Induction heating coil and process for fusion weld joining thermoplastic composite pipe
AssigneeAjax Tocco Magnethermic Corporation
InventorWilliam Adam Morrison
Life of this patent
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Abstract
A method and apparatus are provided for pipe joint fusion-welding and other applications, in which a hinged clamshell inductor apparatus is wound from a single contiguous length of Litz wire cable with turns of each half of the clamshell apparatus configured so that their individual magnetic fields are additive to induce uniform longitudinal current flow providing uniform circumferential heating in a carbon steel susceptor tube inserted within pipe ends to be joined.
Claims16
An induction heating apparatus, comprising:
- a clamshell housing with first and second parts, the housing defining an interior space to accommodate a workpiece along an axis;
- first and second Litz wire coils individually disposed on or in one of the first and second parts of the clamshell housing, and connected in series with one another, the individual Litz wire coils extending generally parallel to the axis along at least a middle portion of the housing;
- and
- a connector apparatus for coupling the first and second Litz wire coils to a power source.
1 more element
Dependencies are inferred from the claim text.