Patent ID: 6318524
Filing Date: 2001-11-20
Classification: B60G,F16F

Abstract:
A piston-cylinder unit, comprising:a cylinder having a first end and a second end;a piston rod guide mounted at said first end of said cylinder;a piston-piston rod component group including a piston connected to a piston rod axially movably mounted in said cylinder so that said piston rod extends through an opening in said piston rod guide;a movement determination device having a transmitter portion and a receiver portion operatively mounted in said piston rod guide for emitting waves from said transmitter portion and analyzing a travel time of reflections of said waves at said receiver portion for determining a movement of said component group relative to said cylinder; anda stop spring operatively connected to said piston rod for limiting movement of said piston rod, said stop spring being operatively arranged for effecting a reflection pattern during measurement wave propagation recognizable as a reference variable for the temperature compensation of the measurement device.