Abstract: In a shock absorber for a vehicle, a piston rod extends through a piston rod guide into a cylinder and its end within the cylinder is attached to a damping piston. A stop assembly is mounted on the piston rod close to the damping piston and spaced from the piston rod guide. The stop assembly includes an axially extending sleeve laterally enclosing the piston rod. The end of the sleeve can be secured directly to the piston rod or a support device can be secured to the piston rod and disposed in contact with the end of the sleeve. When the piston rod is displaced relative to and out of the cylinder, the stop assembly contacts the piston rod guide. The piston rod can be a solid rod member or a tubular member with solid end connections.

Abstract: In a vibration damper or shock absorber for a vehicle, an axially extending cylinder is positioned within a similarly axially extending container with an annular reservoir formed between them. A piston rod extends through a guide in one end of the cylinder and includes a piston axially slidable within the cylinder for dividing it into a pair of working spaces interconnected through a damping device in the piston. One of the working spaces is in fluid connection with the reservoir. A connection is provided between the piston rod guide and the container and includes an annular groove in the guide and a projection from the container extending into the groove. Further, a sealing ring is provided between the guide and the container axially outwardly from the projection-groove. A certain amount of axial play is afforded between the container and the piston rod guide.

Abstract: An impact shock absorber is mounted between the bumper and body of a motor car and permits the bumper to move relative to the car body when the bumper hits an obstacle. The shock absorber damps the impact energy during this relative movement. It consists essentially of a cylinder wherein a piston is glidingly mounted and held under a yielding force in a rest position. The piston is weakened at its connection to the inner end of the piston rod that the piston will break off the rod under a selected maximum impact force.

Abstract: A hydropneumatic shock absorber for use between a bumper and the chassis of a motor vehicle has a cylinder and a plunger guided in the cylinder by the radially enlarged inner end portion of the plunger and by an annular sealing assembly which axially bound a gap radially defined by respective walls of the cylinder and plunger. The sealing assembly includes a rigid guide ring axially secured on the plunger, a resilient sealing ring, and a backing ring of intermediate hardness axially interposed between the guide ring and the sealing ring. The hollow interior of the plunger is partly filled with a compressed gas and partly by liquid which also occupies the cylinder chamber outwardly closed by the plunger, a throttling passage in a closing disc which is an end wall of the plunger, and the remainder of the hollow plunger interior, the liquid being separated from the compressed gas by a floating partition in the plunger.