EP 2476916 B1 20170816 - Piston-cylinder unit with device for position tracking
Title (en)
Piston-cylinder unit with device for position tracking
Title (de)
Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung
Title (fr)
Vérin avec dispositif de détermination de position
Publication
Application
Priority
DE 102011008381 A 20110112
Abstract (en)
[origin: EP2476916A2] The unit (10) has a position determination device with an excitation unit e.g. oscillator (50) such as Hartley oscillator, which is directly or indirectly connected with a tubular hydraulic cylinder barrel (20) and electrical-conductively connected with a cylinder piston (30). The determination device is partially arranged within a cylinder housing or the barrel. An electrical resonant circuit formed from the unit and contact lines (40) is stimulated for oscillating at resonance frequency. An electric signal characterizing the resonance frequency is measured as measurable voltage at the unit.
IPC 8 full level
F15B 15/28 (2006.01)
CPC (source: EP US)
F15B 15/2815 (2013.01 - EP US); F15B 15/2869 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2476916 A2 20120718; EP 2476916 A3 20140326; EP 2476916 B1 20170816; DE 102011008381 A1 20120712; JP 2012145226 A 20120802; US 2012174771 A1 20120712; US 9027460 B2 20150512
DOCDB simple family (application)
EP 11010014 A 20111220; DE 102011008381 A 20110112; JP 2012003227 A 20120111; US 201213347935 A 20120111