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:
Jun. 14, 2005
Filed:
Nov. 22, 2000
Frank Filser, Oberengstringen, CH;
Ludwig Gauckler, Schaffhausen, CH;
Peter Kocher, Wallisellen, CH;
Heinz Luethy, Neuchâtel, CH;
Peter Schaerer, Zurich, CH;
Frank Filser, Oberengstringen, CH;
Ludwig Gauckler, Schaffhausen, CH;
Peter Kocher, Wallisellen, CH;
Heinz Luethy, Neuchâtel, CH;
Peter Schaerer, Zurich, CH;
Eidgenossische Technische Hochschule Zurich, Zurich, CH;
Abstract
The invention relates to an automatic machine tool, for the production of base structures, for false teeth, in particular, for tooth crowns and/or tooth bridges of exact three-dimensional shape. Said base structures may be fixed to prepared natural and/or artificial tooth stumps. The machine tool comprises a machine frame, or a body, a work piece carrier, with a rotation shaft, at least one digitization unit, at least one machining unit and an electronic arithmetic and control unit for all drive lines. A carrier for the workpiece, a blank, and/or for the machining unit(s), serves as displacement unit, with three translational axes in the x-, y- and z-directions. The digitization of the preparation model and the machining of the blank are carried out on the same machine tool, at different times. The machining paths for the blank are calculated from the measured and stored digitized data and a predetermined material-specific scaling factor, before the machining of the blank.