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. 16, 2011
Filed:
Aug. 30, 2006
Ferdinand Dietz, Stuttgart, DE;
Roland Finkler, Erlangen, DE;
Paul Dünisch, Burglauer, DE;
Rainer Siess, Erlangen, DE;
Ferdinand Dietz, Stuttgart, DE;
Roland Finkler, Erlangen, DE;
Paul Dünisch, Burglauer, DE;
Rainer Siess, Erlangen, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The invention relates to a measuring apparatus comprising a sensing head () for determining the position of a primary part () on a secondary part. The sensing head () is fixedly connected to a primary part () or is integrated therein while the primary part () and the secondary part form a linear motor (). Furthermore, the secondary part is embodied as a rack () which is provided at least with ferromagnetic material and preferably equidistant teeth () in a preferred direction (), said teeth () containing at least ferromagnetic material. The sensing head () can be moved in the preferred direction () and opposite thereto. An air gap is located between the sensing head () and the rack () while the sensing head () is equipped with at least one sensor (-), by means of which magnetic fields can be measured in order to determine a position.