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:
Sep. 16, 2003
Filed:
Jul. 09, 2001
Applicant:
Inventors:
Wolfgang Holzapfel, Obing, DE;
Walter Huber, Traunstein, DE;
Sebastian Tondorf, Waging am See, DE;
Peter Pechak, Stein/Traun, DE;
Herbert Mauerberger, Traunstein, DE;
Franz Obermaier, Trostberg, DE;
Josef Höhentinger, Truchtlaching, DE;
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/34 ;
U.S. Cl.
CPC ...
G01D 5/34 ;
Abstract
An optical encoder including a scale, a scanning device displaceable relatively to the scale in a measuring direction and having a scanning reticle with at least one transparent window limited by an opaque screen and a partial grit formed of an electrically conductive material and provided at least in a region of the window.