EP 0721067 B1 20020828 - Fluid-pressure actuator with a magnetic field sensor
Title (en)
Fluid-pressure actuator with a magnetic field sensor
Title (de)
Druckmittelbetätigte Zylinder-Kolben-Anordnung mit einem Magnetfeldsensor
Title (fr)
Vérin d'actionnement à fluide à capteur de champs magnétique
Publication
Application
Priority
DE 19500137 A 19950104
Abstract (en)
[origin: EP0721067A2] The piston-cylinder device has an annular permanent magnet (3) attached to the piston (11), cooperating with a magnetic field sensor (2) within the cylinder (10), for detecting the piston position. The permanent magnet is magnetised in the axial direction of the piston-cylinder device and provided by ferromagnetic discs (32,33) for guiding the magnetic flux. The piston has an open groove (31) receiving the permanent magnet, which has an outer dia. only slightly less than the inner dia. of the cylinder, which has a recess receiving a sleeve (21) of a non-magnetic material, incorporating the magnetic field sensor.
IPC 1-7
IPC 8 full level
F15B 15/28 (2006.01)
CPC (source: EP)
F15B 15/2807 (2013.01)
Designated contracting state (EPC)
AT DE DK ES FR GB IE IT NL SE
DOCDB simple family (publication)
EP 0721067 A2 19960710; EP 0721067 A3 19980211; EP 0721067 B1 20020828; AT E223002 T1 20020915; DE 19500137 A1 19960711; DE 59510348 D1 20021002
DOCDB simple family (application)
EP 95120518 A 19951223; AT 95120518 T 19951223; DE 19500137 A 19950104; DE 59510348 T 19951223