EP 0618373 B1 19990901 - Position indicator
Title (en)
Position indicator
Title (de)
Positionsanzeiger
Title (fr)
Indicateur de position
Publication
Application
Priority
NL 9300565 A 19930330
Abstract (en)
[origin: EP0618373A1] Apparatus for determining the position of a piston rod (1) relative to a reference point, in which the circumference surface of the surface rod (1) comprises a substantially tangentially directed profiling (2) with a pattern repeating itself in the axial direction, comprising a magnetic member which has been fixed relative to the reference point for generating a magnetic field, which is affected by the profiling (3); at least two sensor (6) fixed relative to the reference point for sensing the strength of the magnetic field, and a processing circuit for processing the signals generated by the sensor (6), in which the sensors (6) have a mutual distance in the axial direction, which equals an integer multiple of the pitch of the profiling (2) plus or minus a quarter of the pitch, whereby the sensors (6) each comprise a magnetoresistive element being integrated into a bridge circuit. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/28 (2006.01)
CPC (source: EP)
F15B 15/2846 (2013.01); F15B 15/2861 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0618373 A1 19941005; EP 0618373 B1 19990901; DE 69420299 D1 19991007; DE 69420299 T2 19991230; NL 9300565 A 19941017
DOCDB simple family (application)
EP 94200818 A 19940328; DE 69420299 T 19940328; NL 9300565 A 19930330