Patent ID: 7434467
Filing Date: 2008-10-14
Classification: B06B,G01N

Abstract:
1. An electromagnetic ultrasonic transducer for coupling media free generation and/or reception of ultrasonic waves as linearly polarized transverse waves into and from a workpiece, having at least one unit for converting the ultrasonic waves inside the workpiece and including a coil for generating, and/or detecting a high-frequency magnetic field, a premagnetizing unit for generating a quasi-static magnetic field which superimposes the high-frequency magnetic field in the workpiece, with the coil being torus shaped on at least one partially toroidal magnetic core or at least one magnetic core including parallel pieces, and each core including two front ends which can be turned to face the workpiece; and wherein the front ends of each magnetic core, which can be turned to face the workpiece, are connected directly or indirectly to a magnetic flux piece which has a surface which faces the workpiece and which connects the front ends to each other.