Patent ID: 6942204

Claim:
An extension spring strut, comprising a helical extension spring ( 1 ) having a first end, and a second end; and a pre-load, which is increased on elongating the spring ( 1 ) and is released on linear contraction of the spring ( 1 ), a damper ( 4 ), which is disposed inside the extension spring ( 1 ), which has a housing ( 6 ) that is supported on the first end of the extension spring ( 1 ) and is filled with a damping fluid, and which has a damping piston ( 7 ) disposed in the housing ( 6 ); and which has a piston rod ( 8 ) that is mounted on the damping piston ( 7 ) and extended from the housing ( 6 ) and movable over a damping range a and directed into the extension spring ( 1 ); and an operating element ( 5 ), which comprises an actuating tappet ( 11 ), which is separated from the piston rod ( 8 ), which is connected with the second end of the extension spring ( 1 ), and which is movable over a total range c that includes a no-load range b of the actuating tappet ( 11 ) whereby the actuating tappet ( 11 ) is not in contact with the piston rod ( 8 ) and that includes the damping range a of the piston rod ( 8 ) whereby the actuating tappet ( 11 ) is in contact with the piston rod ( 8 ).