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:
Jan. 31, 2006
Filed:
Feb. 17, 2004
Ingo Irion, Schwanau, DE;
Michael Voss, Leonberg, DE;
Ingo Irion, Schwanau, DE;
Michael Voss, Leonberg, DE;
Abstract
The invention is concerned with a device for clamping and releasing work tools () in a tool receptacle (). The tool receptacle () includes on its free end for this purpose an open socket part (), which is adapted for frictional engaging reception of the work tool shaft (). The work tool shaft is thereby shrunk-fit into a borehole () in the socket part (). For this purpose the socket part is provided with an induction coil () encircling the tool receptacle () which coil can be acted upon by high frequency alternating current for producing heat and heating the socket part (). For avoidance of leakage fields which could result in a undesired heating of the work tool (), it is proposed in accordance with the invention that the induction coil (), on its surface adjacent the free end of the socket part (), is covered over by a pole shoe () having a central through hole () for the work tool () and comprised of a magnetically conductive and electrically non-conductive material.