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:
Jul. 04, 1995
Filed:
May. 06, 1994
Gerald Metz, St. Georgen, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
In a position measuring system a period graduation is scanned by a scanning unit using two groups of respectively four magneto-resistive elements. To avoid crossings of the connecting strip conductors of the magneto-resistive elements and short-wave interference effects on the measuring accuracy, the magneto-resistive elements of the first group extend over one index period of the graduation at a mutual separation of t/4, while every magneto-resistive element of the second group is disposed in adjoining index periods of the graduation at a mutual separation of 3/4(t). Starting at the center of both groups, the respectively Nth magneto-resistive element of the first group is connected to the Nth magneto-resistive element of the second group free of crossings.