Patent ID: 7395715

Claim:
An electromagnetic ultrasonic probe for coupling-media-free generation and reception of ultrasonic waves in the form of linearly polarized transverse waves in a workpiece, and from the workpiece, comprising: a unit for generating the ultrasonic waves inside the workpiece, the unit comprising a transmission coil, to which a high-frequency voltage can be applied to generate a high-frequency magnetic field, and a premagnetizing unit for generating a quasi-static magnetic field superimposed on the high-frequency magnetic field in the workpiece; an ultrasonic waves reception unit comprising a reception coil; the transmission coil and the reception coil being torus-shaped and being disposed at least on one partially toroidal-shaped magnetic core, having two front ends which can be turned to face the workpiece and through which the high-frequency magnetic fields can be coupled into and coupled out of, the workpiece; a contact area for providing direct or indirect contact between the premagnetizing unit and the workpiece through the contact area; and the at least one partially toroidal-shaped magnetic core is disposed laterally next to the contact area so that the premagnetizing unit can project over the partially toroidal-shaped magnetic core perpendicular to the contact area.