Patent ID: 6659240
Filing Date: 2003-12-09
Classification: F15B,F16F

Abstract:
An arrangement for a piston and cylinder device, comprising:a cylinder unit having an inner space defined therein, the inner space having a flowable medium disposed therein; a slidable piston unit disposed in the inner space, the piston unit being movable in a forward and backward direction, the piston unit dividing the inner space into a first chamber and a second chamber; a piston rod connected to the piston unit and having a recess defined therein; the cylinder unit having an end wall at the second chamber, the end wall having at least a part of a first and second cylinder channel defined therein, the cylinder unit having a third cylinder channel defined therein; a hollow sensor element disposed in the inner space and attached to the end wall, the sensor element having an axial sensor channel defined therein and extending therethrough, the piston unit being slidably associated with the sensor element and the sensor element extending through the piston unit and into the recess of the piston rod; the first cylinder channel in fluid communication with the second chamber, the sensor channel having a bottom end opening in fluid communication with one end of the second cylinder channel, the third cylinder channel in fluid communication with the first chamber; and a conductive member disposed in the sensor element, the conductive member being connected to an electric unit for detecting an inductance.