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. 26, 2005
Filed:
Jan. 13, 2004
Guenter Reusing, Niederwerrn, DE;
Stefan Schuler, Schonungen, DE;
Guenter Reusing, Niederwerrn, DE;
Stefan Schuler, Schonungen, DE;
Rexroth Star GmbH, Schweinfurt, DE;
Abstract
A device for detecting a relative movement between two machine parts movable relative to one another has a plurality of marking rulers arranged on one of the machine parts one after the other in direction of the relative movement of the machine parts and having increment markings for detecting a distance of a relative movement of the both machine parts, two sensors for sensing of the marking rulers and arranged on the other of the machine parts at the predetermined distance in the direction of relative movement of the machine parts, the sensors sensing the increment markings and each providing a sensing signal; the marking rulers being arranged so that distances between two neighboring ones of the marking rulers being smaller than the predetermined distance between the sensors, an evaluating unit operative for determining an absolute position of the corresponding sensor between two successive increment markings based on a phase position of the sensing signal of the sensors.