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:
May. 31, 2005
Filed:
Nov. 22, 2002
Josef Haimer, Igenhausen, DE;
Franz Haimer, Igenhausen, DE;
Josef Haimer, Igenhausen, DE;
Franz Haimer, Igenhausen, DE;
Franz Haimer Maschinenbau Kg, Hollenback-Igenhausen, DE;
Abstract
The induction coil () of an arrangement which heats a tool-holder () inductively for the purpose of changing a tool shank () retained with a press-fit therein has a winding (), in the case of which the number of coil turns per unit of length in the direction of the coil axis and/or the number of coil turns per unit of surface area is smaller in an intermediate region located, in the direction of the coil axis, between two main winding regions () than in the two main winding regions () and/or the internal winding diameter is smaller in the two main winding regions () than in the intermediate region and/or, at least in an axial sub-region of the induction coil (), increases from the two main winding regions () in the direction of the intermediate region. Such a winding achieves uniform heating of the tool-holder () in the axial direction of the tool shank () and, accordingly, it is possible even for tool shanks () retained with very small tolerances in the press-fit of the tool-holder () to be released from the shrink-fit without jamming.