Patent ID: 6745876
Filing Date: 2004-06-08
Classification: F15B,F16F

Abstract:
A piston-cylinder assembly, comprising:a cylinder having a top end, a bottom end, and an inside wall; a piston rod having a piston movably arranged for axial movement in said cylinder; a piston rod guide arranged in said cylinder for guiding the axial movement of said piston rod; a distance detection system for detecting a position of said piston in said cylinder, said distance detection system comprising a sensor and a transmitter, said sensor being mounted on one of said piston and said bottom end of said cylinder, wherein said transmitter moves a first distance in response to an axial displacement of said piston in said cylinder by a second distance different than said first distance, wherein said distance detection system determines said position of said piston in response to the difference between said first and second distances; and a first spring arranged between said transmitter and said piston and a second sprint arranged between said transmitter and said bottom end of said cylinder, said transmitter supported by said first spring and said second spring.