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. 02, 2017
Filed:
Feb. 18, 2015
Hexagon Technology Center Gmbh, Heerbrugg, CH;
Urs Vokinger, Au, CH;
Heinz Lippuner, Rebstein, CH;
Werner Amann, Feldkirch, AT;
Knut Siercks, Mörschwil, CH;
HEXAGON TECHNOLOGY CENTER GMBH, Heerbrugg, CH;
Abstract
System for determining relative positions comprising an encoder having encoder elements, and a sensor unit having a first sensor and at least one second sensor. The sensor unit and the encoder are movable relative to one another and their position relative to one another is determinable by the system. The first sensor and second sensor have a sensor distance with respect to one another. The sensor furthermore has a component composed of a dimensionally stable and aging-resistant material having a coefficient of thermal expansion which, in terms of absolute value, is in a range of 0 to 5·10K. The sensor distance is determinable highly precisely by the component by virtue of the component serving for the positional fixing of the sensors or by virtue of the component having a scale with the aid of which the sensor distance can be measured.