Patent ID: 8373104

Claim:
A device for inductively heating a component section symmetrical relative an axis, made of electrically conductive material, in particular a sleeve section associated with a tool clamping chuck, which sleeve section comprises a receiver opening for supporting a tool through press fit, wherein the device comprises plural pole pieces made of a material conducting magnetic flux and disposed circumferentially about the symmetry axis of the component section inserted into the device as intended, and an induction device for loading the pole pieces with magnetic flux, and thus, so that the magnetic flux of pole pieces adjacent in a circumferential direction is oriented in opposite directions, wherein an axis (feed rotation axis) extending in parallel to the axis of symmetry of the component section is associated with each pole piece, which axis is different from the feed rotation axes of the other pole pieces and about which axis the pole piece is rotatably supported at the device, so that each of the pole pieces are fed towards a surface portion to be heated of a particular work piece through a rotation about the feed rotation axis associated with said pole piece.