The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2022
Filed:
Nov. 13, 2019
Hexagon Technology Center Gmbh, Heerbrugg, CH;
Silvan Meile, St. Gallen, CH;
Charles Leopold Elisabeth Dumoulin, Balgach, CH;
Matthias Burri, Rheineck, CH;
HEXAGON TECHNOLOGY CENTER GMBH, Heerbrugg, CH;
Abstract
An additive manufacturing apparatus for manufacture of aluminum parts layer-by-layer, the apparatus comprising an eddy current sensor for in-process measuring of contour and defects of manufactured layers with a defect resolution of at least 0.25 mm. Preferably, the eddy current sensor is embodied as a differential mode line sensor with dual use of sensor coils. Preferably, the array of the line sensor comprises a zig-zag-arrangement of sensor coils with a cross section of 0.15 mmmaximal and with a core with an initial magnetic permeability of at least 5000, preferably a permalloy or metal glass coil core.