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:
Apr. 17, 1979
Filed:
Nov. 28, 1977
Wolfgang Buttcher, Dortmund, DE;
Hermann-Josef Kopineck, Dortmund, DE;
Hoesch Werke Aktiengesellschaft, Dortmund, DE;
Abstract
A device for checking materials by means of an electrodynamic converter which includes a magnet and at least one high frequency coil arranged between the core of the magnet and the workpiece. The high frequency coil includes a first section effective with regard to the generation of ultra sound, and a second section which is not effective with regard to the generation of ultra sound. In the first section the individual currents in the windings of the high frequency coil have approximately the same direction while the second section is located outside the magnetic field of the magnet or opposite the workpiece behind a shielding.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile