Abstract: A piston is guided in an axially displaceable manner sealed off from a closed cylinder via an annular seal radially surrounding it, and divides the cylinder interior into a working space near the piston rod and a working space away from the piston rod. The two working spaces are filled with a hydraulic fluid. The piston has a one-sided piston rod which extends through the working space near the piston rod and is guided in a sealed manner to the outside through an end closing wall of the cylinder. A first valve can be opened under high pressure to connect the working space away from the piston rod to the working space near the piston rod. A second valve can be opened under high pressure to connect the working space near the piston rod to the working space away from the piston rod. A volume-equalizing chamber for receiving the amount displaced from the working space away from the piston rod, which is greater than the amount displaced from the working space near the piston rod.

Abstract: A piston/cylinder unit has a closed cylinder with a piston axially displaceably guided therein. The piston divides the cylinder interior into first and a second working spaces which are both filled with a fluid. A first nonreturn valve is arranged in the piston having a closing element of which is force-loaded in the closing direction. At least a portion of the first nonreturn valve is exposed to pressure in the first working space. A second nonreturn valve is also arranged in the piston and also has a closing element of which is force-loaded in the closing direction. The surface of the closing element of the first and/or second nonreturn valve acted upon by the pressure of the respective working spaces can be enlarged during the opening stroke of said nonreturn valve.

Abstract: The invention is concerned with a ball-and-socket joint connection having a retaining part which has a fastening point for fixedly arranging it, and a rod part which is arranged pivotably in a pivoting-angle region in a pivoting plane via a ball-and-socket joint on the retaining part 1. The fastening point and the ball-and-socket joint are situated approximately in the pivoting plane and the rod part protrudes from the ball-like component out of a journal slot 19 which extends radially to the ball seat in a sector-like or sectional manner at least corresponding to the pivoting angle and has a width at least corresponding to the thickness of the rod part to reduce a bending moment and loading on the retaining part.

Abstract: A piston/cylinder unit has a closed cylinder with a piston axially displaceably guided therein. The piston divides the cylinder interior into first and a second working spaces which are both filled with a fluid. A piston rod extends through the cylinder interior and is guided on its end side to the outside in a sealed manner through a closing wall of the cylinder. Furthermore, a first nonreturn valve is arranged in the piston having a closing element of which is force-loaded in the closing direction. At least a portion of the first nonreturn valve is exposed to pressure in the first working space. When an opening pressure in the first working space exceeds an opening pressure, the first nonreturn valve is opened connecting the first working space to the second working space. A second nonreturn valve is also arranged in the piston and also has a closing element of which is force-loaded in the closing direction.

Abstract: A piston is guided in an axially displaceable manner sealed off from a closed cylinder via an annular seal radially surrounding it, and divides the cylinder interior into a working space near the piston rod and a working space away from the piston rod. The two working spaces are filled with a hydraulic fluid. The piston has a one-sided piston rod which extends through the working space near the piston rod and is guided in a sealed manner to the outside through an end closing wall of the cylinder. A first valve can be opened under high pressure to connect the working space away from the piston rod to the working space near the piston rod. A second valve can be opened under high pressure to connect the working space near the piston rod to the working space away from the piston rod. A volume-equalizing chamber for receiving the amount displaced from the working space away from the piston rod, which is greater than the amount displaced from the working space near the piston rod.