Abstract: A housing having a first housing end and a second housing end, a substantially cylindrical work chamber formed in the housing, a piston which is arranged in the work chamber so as to be displaceable and which divides the work chamber into a first work space near the first housing end and a second work space near the second housing end, a piston rod which is arranged at one side of the piston and which projects through the first work space and is guided out of the work chamber in a sealed manner at the first housing end through a guiding and sealing device, and a valve chamber which is formed in the housing parallel to the work chamber and in which a first valve assembly and a second valve assembly are arranged. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium.

Abstract: A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium.

Abstract: A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium.