Thyssenkrupp Bilstein Gmbh

Thyssen Krupp Ag

August Bilstein Gmbh & Co Kg

Sms Group Gmbh

Rational International Ag

Michael Hönig

Uwe Plociennik

Stefan Mages

Günter Poetsch

Hendrik Kloss

Johannes J De Baan

Thomas Heimann

Hans-Jürgen Odenthal

Thilo Reimann

Uwe Grafe

Esra Erdem-Hornauer

Kevin Spahlholz

Simone Wallstein

Simon Endres

A device for damping vibrations may comprise a hollow damper tube, a piston rod with a piston fastened thereto, at least one spring plate, and at least one securing element. The piston may be disposed within the damper tube, and the spring plate may be disposed outside the damper tube. To achieve a reliable connection between the spring plate and the damper tube in a cost-effective manner, the spring plate may be connected to the damper tube in both a force-fitting manner and a form-fitting manner. The present disclosure further concerns motor vehicles that employ such devices, as well as methods for fastening spring plates to damper tubes.

Shock-absorbing damper with a spring plate fastened thereto, and method for the fastening of a spring plate to a shock-absorbing damper

A hydraulic dashpot with a cylinder (), a piston (), and a bypass. The cylinder is charged with fluid. The piston partitions the cylinder into two compartments (&), travels back and forth therein on the end of a piston rod (), and is provided with breaches and valves. The open cross-section of the bypass can be expanded and contracted and fixed in accordance with the direction the piston is traveling in, depending on whether the dashpot is in the compression or in the suction phase. The bypass is provided with an axially displaceable control component. One end of the control component comes to rest against a valve, its displacement being limited by stops. The bypass is accommodated in an axial bore through the piston rod. The bypass operates in conjunction with various outlets that open into the compartments. The control component is provided with at least one lateral flange and travels back and forth in at least one tube. The object is a smooth performance curve and low wear. The control component is accordingly in several parts, comprising at least two bypass control caps that axially travel up to stationary stops. The caps, in conjunction with axially variable components (&) that dictate the size of the open cross-section in both the compression and the suction phase, create a port.

Hydraulic shock absorber

A blow-off valve for a hydraulic dashpot comprising a fluid charged cylinder () and a piston () that travels back and forth therein on the end of a piston rod. The piston partitions the cylinder into two compartments (&) and is provided with breaches () and shock-absorbing valves. The piston rod () or an extension () thereof is hollow and accommodates operating components (). The object is a valve that can be accommodated along with the hydraulic lines that serve it outside the piston rod or an extension thereof. The outer surface of the piston rod is accordingly provided with at least one axial inwardly undulating groove () at least as long as the piston, including its fastenings and operating components, is high. Alternatively, the bore that extends through the piston rod or its extension and its fastenings and operating components is provided with a similar radially outward groove that can be closed off at the compression end by a spring-loaded valve.

Blow-off valve for a hydraulic dashpot

A hydropneumatic shock absorber has an outer tube, an inner tube inside the outer tube, forming therewith an outer gas/liquid chamber and itself internally forming an inner chamber and a piston rod inside the inner tube. A body of liquid fills the entire inner chamber and partially fills the outer chamber. A piston on the rod subdivides the inner chamber into an upper and a lower compartment. A foot valve is located at the lower tube ends. A rigid centering washer has an outer periphery engaged against the upper end of the outer tube and an axially extending ridge engaged directly radially against the upper end of the inner tube. A flexible annular outer lip on the washer engages radially against the upper end of the inner tube to bear flexibly to permit limited fluid flow from the upper compartment to the outer chamber while blocking opposite flow. A flexible annular inner seal underneath the ridge on the washer engages radially inwardly against the piston rod. An outer seal on the washer engages against the outer tube so the washer and outer seal upwardly close off the outer chamber. An upwardly open pocket down into which the inner seal projects is provided in the inner tube at its upper end. A passage extends from the inner chamber past the pocket so that gas collecting in the inner chamber can bleed up past the pocket and then pass by the lip into the outer chamber.

Piston guide and seal for dual-tube hydropneumatic shock absorber

Growing community of inventors

Ennepetal, Germany

Michael Hönig