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Vacuumschmelze Gmbh & Company Kg

Vacuumschmelze Gmbh

Herbert Hein

Kurt Emmerich

Harald Hundt

Wulf Guenther

Achim Kipper

Matthias Reidel

J&ouml;rg L&uuml;scher

Markus Widrig

Alois Hangg

A highly bendable antenna core () which is highly bendable for high-frequency identification systems substantially retains its soft-magnetic properties when bending occurs. The antenna core is produced by using specific amorphous or nanocrystalline alloys having a very low magnetostriction value. The antenna core () is embodied in the form of a laminate with/or without insulating layers placed therebetween. An antenna can be provided with one such antenna core.

Antenna core

In a manufacturing method and apparatus for manufacturing sheet metal packets in punch-packeting technology with a round or oval iron cross section. laminations are punched from a ribbon and are provided with depressions at one side and with elevations at the other side that coincide with the depressions and lie opposite them, with the elevations being in the form of at least two circular nipples being pressed into the depressions upon assembly of each packet. In one lamination per packet, serving as a separating lamination, cylindrical holes are punched instead of the depressions, the nipples of the neighboring lamination engaging into these holes. Laminations are thereby punched from the strip that respectively exhibit different outside contours, particularly different widths, and are joined with one another to form a packet that has a cross-section that is at least partially round, by virtue of the sheet metal packet having graduated edges.

Method and device for producing bundles of sheet metal laminates for magnetic cores

For the production of a plate packet for magnet cores that have an opening in the longitudinal direction of the plate lamellae, inner plate lamellae with reduced cross-section are stacked in the region of the opening. Of these inner lamellae, at least two lie in one plate plane and together have a surface that is reduced in size by the cross-section of the opening in comparison to the size of the outer plate lamellae.

Plate packet for magnet cores for use in inductive components having a

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Freigericht, Germany

Herbert Hein