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:
Jun. 05, 1984
Filed:
Oct. 20, 1981
Gerhard Huschelrath, Laufach, DE;
Karl Laudenbach, Giessen, DE;
Nukem GmbH, Hanau, DE;
Abstract
An electrodynamic ultrasonic transformer, having at least one exciting coil and one receiving coil, for use in ultrasonic nondestructive material testing in order to reduce the dead times and to remove or, respectively, minimize negative influences occurring during the measuring of different test piece material and at distance variations without adversely affecting the signal/noise ratio. Those parts of the exciting coil and/or receiving coil designed for current conducting are preferably made of resistance material which is suitable for structural elements embodying electric resistors, and which material will not essentially obstruct the current flow during the exciting phase of the current, and after termination of the excitation will rapidly reduce the energy stored in stray and coupling fields.