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:
Mar. 22, 2016
Filed:
Mar. 15, 2012
Holger Schafer, Weilmunster, DE;
Steffen Wallendorf, Wetzlar-Dutenhofen, DE;
Udo Fiedler, Lahnau/Dorlar, DE;
Holger Schafer, Weilmunster, DE;
Steffen Wallendorf, Wetzlar-Dutenhofen, DE;
Udo Fiedler, Lahnau/Dorlar, DE;
Satisloh AG, Baar, CH;
Abstract
A device for the fine machining of optically active surfaces in particular spectacle lenses, has a spindle shaft which has a tool-holder portion and is mounted in a spindle housing such that it can rotate about a tool rotation axis. The device has an electric rotary drive with a rotor and a stator that rotates the spindle shaft operatively connected to the rotor about the tool rotation axis. The tool-holder portion can be displaced axially in the direction of the tool rotation axis. The rotor and the stator parts are axially guided in a guide tube along the tool rotation axis. The spindle shaft is in the form of a hollow shaft, via which the tool-holder portion, which is configured to hold a membrane chuck, can be subjected to a fluid.