Patent ID: 6588555
Filing Date: 2003-07-08
Classification: F16F

Abstract:
A piston-cylinder unit, comprising;a cylinder comprising first and second cylinder portions, said first cylinder portion being coaxially received inside said second cylinder portion and connected thereto by a threaded connection which is coaxial with said first and second cylinder portions; and a piston axially displaceable in said cylinder, said piston separating said cylinder into two work chambers, said cylinder having a bypass groove in said first cylinder portion for communicating between said two work chambers depending on a stroke position of said piston relative to said first cylinder portion, said bypass groove extending in a direction parallel to the axis of said cylinder and not extending radially completely through said first cylinder portion, whereby said first cylinder portion is displaceable axially relative to said second cylinder portion and said stroke position where said chambers communicate is adjustable by rotating said first cylinder portion relative to said second cylinder portion.