Gas spring with reduced extension force when contracted - has at least tow friction engaging retaining elements connected to pressure pipe and piston rod

摘要

The gas spring has a pressure tube contg. a sealed displaceable piston and a retaining device (8) provided on the side remote from the piston rod with at least two friction-engaging retaining elements (12,19) which are actively connected on one side to the pressure tube (4) and on the other by an axially movable shear connection (14) to the piston rod (2). A spring-loaded part of the shear connection (14) has at least one inclined surface which comes to adjoin a surface which lies on the remote side of a retaining face (15) of a retaining element. The retaining surfaces are designed without rear-cut sections. ADVANTAGE - The connecting points for the individual parts of the gas spring can be made from economically produced standardised parts adapted for different dias. of pressure pipes.