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US 4,230,923 AGranted
Device for induction welding
AssigneeAB Akerlund & Rausing
InventorJan-Bertil Jeppsson
Life of this patent
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Abstract
A device for induction welding apparatus fashioned partly from a metal plate is disclosed. The metal plate is constructed so as to form an inductive loop for generating eddy currents in electrically conductive material placed adjacent thereto. The metal plate contains a groove for carrying a cooling medium; a second, similarly configured non-conductive plate is attached to the metal plate over said groove to allow passage of said cooling medium in said groove.
Claims10
A device for inductive welding comprising:
- metallic plate means having an arbitrary contour formed of highly conductive material, said metallic plate means having at least one aperture therein configured to admit materials to be welded, and said metallic plate means having a slot therein defining a high frequency current path within said metallic plate means about said aperture;
- cover plate means configured to cover at least a portion of said metallic plate means about said at least one aperture, said cover plate means being made of nonconductive material and having therein at least one aperture corresponding generally in configuration to said at least one aperture within said metallic plate means when said cover plate means is in a covering relationship therewith, said metallic plate means and said cover plate means defining a cooling fluid groove therebetween in the form of a closed passage disposed substantially about said at least one aperture for conveying cooling fluid thereabout, said cooling fluid groove defined being configured to cool said metallic plate means in response to inductive heating;
- and
- means for applying high frequency voltage to said high frequency current path within said metallic plate means.
1 more element
Dependencies are inferred from the claim text.