Zf Sachs Ag

Zf Friedrichshafen Ag

Mannesmann Sachs Ag

Peter Wirth

Gerald Fenn

Hassan Asadi

G&uuml;nther Handke

Hans Luksch

Matthias H&ouml;hn

Wolfgang Bach

Björn Neumann

G&uuml;nther Braun

Vibration damper cylinder, in which a piston rod is guided with freedom of axial movement, where the cylinder has a compensating space, the volume of which is partially determined by an outer sleeve of a joint eye attached to the cylinder. The joint eye has an inner sleeve inside the outer sleeve, and where these two sleeves form a ring-shaped space, which is in flow connection with the compensating space.

Vibration damper having a joint eye

A piston rod and a piston are installed with freedom of axial movement in a cylinder filled with a working medium, the piston dividing the working space into a space on the piston-rod side of the piston and a space on the side of the piston facing away from the piston rod. A stop disk is mounted on the piston rod in addition to the piston rests against a retainer provided on the cylinder to limit the outward movement of the piston rod during a fire.

Vibration damper with fire safety device

A piston ring for the piston of a vibration damper includes a jacket and supporting segments connected to the jacket with holding surfaces. The supporting segments are supported axially on an upper side and a lower side of the piston by the holding surfaces. The piston ring has a seal carrier in which at least one seal is embedded, wherein the seal is oriented toward the piston proceeding from the seal carrier.

Piston ring for the piston of a vibration damper

Piston-cylinder unit comprising a cylinder in which a work space is filled with a work medium and which is limited by a closure and is sealed by at least one seal. The closure is fixed axially by a positive engagement with the cylinder up to a temperature threshold and the closure can carry out an axial movement for relieving pressure above the temperature threshold. A cutting device cancels the sealing function of the seal during the axial movement of the closure for relieving pressure.

Fire protection in a piston-cylinder unit

Damping valve for a shock absorber includes a damping valve body with at least one valve seat surface for a valve disk which is loaded in the lifting direction by a flow of damping medium. At least one support disk arranged on the valve disk determines, by its contour, a lever arm up to an effective surface to which pressure is applied by a damping medium in the lifting direction, and this support disk is pretensioned in direction of the valve disk by a tensioning plate, wherein the damping valve body forms a line of tensioning with the valve disk, support disk and tensioning plate, wherein at least one of the contact surfaces within the line of tensioning is profiled, so that there is a contact circle at the support disk, and the radius of the contact circle matches the provided reference dimension for the contour of the support disk determining the lever arm length. The profile contains a free cut that accommodates any inaccuracies in the shape of the structural component parts contained in the line of tensioning.

Damping valve for a shock absorber

Piston ring including a covering surface which covers a circumferential surface of a piston, and supporting segments having retaining surfaces which engage the upper and lower sides of the piston. The piston ring has a butt joint which enables the piston ring to be elastically deformable radially, the butt joint being designed at one end of the covering surface with at least one tongue which engages in a cutout in the other end of the covering surface. The tongue is designed with at least one retaining segment which runs in the circumferential direction and engages in a supporting manner in each case on the upper and lower side of the piston.

Growing community of inventors

Schonungen, Germany

Peter Wirth