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. 25, 2007
Filed:
Oct. 16, 2002
Jan Braasch, Trostberg, DE;
Wolfgang Holzapfel, Obing, DE;
Volker Seyfried, Nussloch, DE;
Sebastian Tondorf, Waging am See, DE;
Jan Braasch, Trostberg, DE;
Wolfgang Holzapfel, Obing, DE;
Volker Seyfried, Nussloch, DE;
Sebastian Tondorf, Waging am See, DE;
Dr. Johannes Heidenhain GnbH, Traunreut, DE;
Abstract
A position measuring device for detecting the spatial position of a movable element in relation to a base body, the device including a linear measuring device that measures a distance between a movable element and a base body and an angle-measuring apparatus that measures an angle between the movable element and the base body. A light source that directs light along a beam path, a detector within the beam path and a grating within the beam path between the light source and the detector. For measuring the angle, the beam path extends between the movable element and the base body so that an intensity strip pattern is created by illuminating the grating by the light source, whose position relative to the detector is a measure of the angle.