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:
Aug. 11, 1981
Filed:
May. 22, 1980
Hans-Dieter Jacoby, Werdorf, DE;
Ernst Leitz Wetzlar GmbH, Wetzlar, DE;
Abstract
A process of and an apparatus for the automatic measuring of a workpiece. The workpiece is carried on a coordinate table which is mounted for movement relative to a scanning head in two mutually orthogonal directions. A control device moves the workpiece relative to the scanning head at a constant rate in one direction and at a rate in the other direction so as to maintain a constant pressure of the scanner head on said workpiece. The rates of movement in both directions are periodically compared and when equality is reached reversal occurs wherein control of the constant rate is switched to the scanning head and control from the scanning head is switched to a constant rate. This reversal permits uninterrupted measuring in an automatic mode.