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:
Aug. 05, 2008
Filed:
Jun. 18, 2004
David Paige, Newcastle-upon-Tyne, GB;
Robert Andrew Mercel, Northumberland, GB;
Ian Sowerby, Northumberland, GB;
David Paige, Newcastle-upon-Tyne, GB;
Robert Andrew Mercel, Northumberland, GB;
Ian Sowerby, Northumberland, GB;
PII Limited, Tyne and Wear, GB;
Abstract
An electromagnetic acoustic transducer () has one or a plurality of magnets for applying a DEC magnetic field to a material () under test, and an electrical coil () supplied by an alternating current source for, providing an AC magnetic flux within the material under test. A wear plate () engages with an slides along the surface of the material under test. The wear plate () is of electrically conductive ferromagnetic material and has apertures () therein. Thus, both the DC field and the ACT flux can penetrate the material under test and create ultrasonic vibration of that material.