Geometrical instruments – Distance measuring – Scale reading position sensor
Reexamination Certificate
2005-07-26
2005-07-26
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Distance measuring
Scale reading position sensor
C033S0010MP, C033S708000, C033S0010PT, C033S762000
Reexamination Certificate
active
06920699
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.
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Prospect From Rexroth Star GMBH: “Star-Kugel-Und Rolenschienenfuehrungen MIT Integriertem Messsystem”, Jul. 2000, pp. 1-23.
Reusing Guenter
Schuler Stefan
Fulton Christopher W.
Guadalupe Yaritza
Rexroth Star GmbH
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