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. 11, 2006
Filed:
Jan. 28, 2003
David Paige, Newcastle upon Tyne, GB;
Robert Andrew Mercel, Ashington, GB;
David Paige, Newcastle upon Tyne, GB;
Robert Andrew Mercel, Ashington, GB;
Pii Limited, Cramlington, GB;
Abstract
An electromagnetic acoustic transducer for exciting ultrasound in a ferromagnetic material under test (), includes a magnetic unit () arranged to be moved relative to the material under test () to magnetize a surface layer of the material, and an electrical winding () supplied by an alternating current source, the magnetic unit () and the electric winding (), in use, being applied in sequence to the material under test () whereby the electrical winding () is positioned adjacent the material subsequent to magnetization thereof by the magnetic unit (), the alternating magnetic flux created by the winding () interacting with the remanent magnetization of the material to create ultrasonic vibration of the material.