Patent ID: 6823725
Filing Date: 2004-11-30
Classification: F16H,G01D

Abstract:
Linear distance sensor comprising:at least one axially displaceable element composed of at least one part and a stator, field-generating means with a permanently existing modulated course of lines of magnetic flux are arranged in the displaceable element, and one or more sensor modules stationarily connected to the stator and carry at least one magnetic field sensor wherein the one or more sensor modules convert the course of lines of magnetic flux generated by said field generating means completely or partially into output signals that can be further processed, wherein the magnetic field sensors operate either according to the AMR principle, the GMR principle, or the Hall effect principle, wherein the displaceable element is guided by means of a bearing connected to the stator and embracing the displaceable element at least partly and thereby guiding it axially, and wherein the one or more sensor modules are stationarily connected to the stator, and wherein field-generating means are positively connected to the displaceable element.