Patents Assigned to Thyssenkrupp Bilstein Suspension GmbH
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Patent number: 8651251Abstract: A regulable dashpot with shock-absorption force controls, especially intended for motor vehicles, with at least one flow-regulating system including one or more shock-absorption components for the compression phase and/or for the decompression phase. The object is to allow the dashpot to shift continuously between the hard and soft phases, whereby the valve-adjustment intervals can be varied at intervals that are not unnecessarily short or even unattainable. At least one valve assembly is accordingly supplied with variable flow impedance by regulating valve.Type: GrantFiled: August 16, 2012Date of Patent: February 18, 2014Assignee: ThyssenKrupp Bilstein Suspension GmbHInventors: Alfred Preukschat, Jurgen Adamek
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Patent number: 8613348Abstract: A hydraulic oscillation damper has a piston rod with a piston that is inserted into a damper tube filled with damping fluid, and divides the damper tube into first and second working chambers. First and second continuously adjustable damping valves are disposed in a common housing that is attached to the damper tube, and are connected hydraulically in parallel with the working piston. The housing has a first hydraulic chamber that is connected to the first working chamber via a first bore, and a second hydraulic chamber that is connected to the second working chamber via a second bore. A flow guiding element, which separates the two hydraulic chambers, guides the damping fluid flow to the first or second damping valve in response to a retraction or extension movement of the piston.Type: GrantFiled: March 19, 2009Date of Patent: December 24, 2013Assignee: ThyssenKrupp Bilstein Suspension GmbHInventors: Wolfgang Hamers, Andreas Feld
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Publication number: 20130043625Abstract: A cap for mounting on a damper tube of a vibration damper, having an outer shell region that is cylindrical at least in sections and at least one elastic spring tongue. At least one positively locking element is arranged on the spring tongue in order to produce a positively locking connection between the cap and a protective element of the vibration damper. The at least one spring tongue has a region which, in the non-mounted state of the cap, is set back inwardly in the radial direction with respect to the outer shell region. The set- back region has a spreading element, by way of which the spring tongue is spread outwardly in the radial direction during the mounting of the cap.Type: ApplicationFiled: March 26, 2011Publication date: February 21, 2013Applicant: ThyssenKrupp Bilstein Suspension GmbHInventors: Damian Mrugalla, Markus Schrichten
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Publication number: 20120305354Abstract: A regulable dashpot with shock-absorption force controls, especially intended for motor vehicles, with at least one flow-regulating system including one or more shock-absorption components for the compression phase and/or for the decompression phase. The object is to allow the dashpot to shift continuously between the hard and soft phases, whereby the valve-adjustment intervals can be varied at intervals that are not unnecessarily short or even unattainable. At least one valve assembly is accordingly supplied with variable flow impedance by regulating valve.Type: ApplicationFiled: August 16, 2012Publication date: December 6, 2012Applicant: THYSSENKRUPP BILSTEIN SUSPENSION GMBHInventors: Alfred PREUKSCHAT, Jurgen ADAMEK
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Patent number: 8322369Abstract: A flow-control valve has a housing, a guide fixed in the housing and having a tubular end and formed with a radially throughgoing heart-shaped valve opening, and a slide axially shiftable in the housing and having a shaft and a sleeve extending axially from the shaft and snugly surrounding and slidable on the guide-body end. The slide is axially shiftable between positions with the sleeve completely blocking, partially blocking, and completely unblocking the valve opening. An electromagnetic linear actuator in the housing can axially shift the slide. A support ring fixed to the actuator and to the guide forms with the guide-body end an annular chamber into which the valve opening opens and is formed with a radially throughgoing port opening into the chamber and radially aligned with the valve opening.Type: GrantFiled: May 27, 2009Date of Patent: December 4, 2012Assignee: Thyssenkrupp Bilstein Suspension GmbHInventors: Klaus Schmidt, Wolfgang Hamers
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Patent number: 8322499Abstract: The invention relates to a flow-control valve (1) for a hydraulic shock absorber. Components of the basic structure of the flow-control valve (I) are an axially movable slide (5) having a body (6) and a valve sleeve (7), an electromagnetic linear actuator (8) for axial displacement of the slide (5) and a fixed guide body (9) configured as a tube and having an end pin (10). The valve sleeve (7) is guided on the end pin (10) of the guide body (9) and cooperates with at least one valve opening (11) formed in the wall of the guide body (9) such that the flow cross section of the valve opening (11) can be altered by axial movement of the valve body (7). According to the invention the slide (5) is provided in a pole tube (12) fixed on the guide body (9). The body (6) of the slide (5) is guided with a clearance fit in a bearing ring (13) attached to a section of the pole tube (12) surrounding the body (6).Type: GrantFiled: March 17, 2009Date of Patent: December 4, 2012Assignee: Thyssenkrupp Bilstein Suspension GmbHInventors: Klaus Schmidt, Wolfgang Hamers
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Patent number: 8235188Abstract: The invention relates to a damping element for a vibration damper that works with hydraulic damping fluid. The fundamental structure of the damping element includes a one-piece base body configured as a circular disk, which has a plurality of first flow-through openings, each having an entry cross-section in a first face side of the base body, as well as a plurality of second flow-through openings, each having an entry cross-section in an opposite, second face side of the base body, as well as circular valve disks on both face sides of the base body, which rest against a support surface of the base body, disposed in the center, and at least partially close off exit cross-sections of the flow-through openings. The exit cross-sections are surrounded by control edges, which form contact surfaces for the valve disks and project beyond the support surface as well as the entry cross-sections.Type: GrantFiled: June 27, 2007Date of Patent: August 7, 2012Assignee: ThyssenKrupp Bilstein Suspension GmbHInventor: Saadeddin Kais
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Publication number: 20120145496Abstract: The invention relates to a shock absorber for a wheel suspension of a motor vehicle, comprising a) a damper tube (1) at least partially filled with a damping liquid, b) a piston rod (2) arranged so as to reciprocate in the damper tube (1), c) an element guided in the damper tube (1), which element divides the interior of the damper tube (1) into a piston rod-side working chamber (3) and a working chamber (4) remote from the piston rod, d) a housing (5) connected to the piston rod (2), e) a control valve (6) arranged in the housing (5) and movable back and forth between a closed and an open position. The piston rod-side working chamber (3) and the working chamber (4) remote from the piston rod are hydraulically interconnected via the housing (5) and a first damping valve (7) with soft damping characteristics through which the damping fluid can flow in both flow directions is provided in the housing (5).Type: ApplicationFiled: August 23, 2010Publication date: June 14, 2012Applicant: Thyssenkrupp Bilstein Suspension GmbHInventors: Ole Göetz, Wolfgang Hamers, Klaus Schmidt, Dmitrij Smeljanskij, Freddy Woenarta
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Patent number: 8113496Abstract: Annular bearing member for supporting a support element that comprises elastic material and that when installed is under pressure and that is in the area of a suspension strut, whereby the bearing member comprises a material that has a greater hardness than the material of the support element and whereby the bearing member includes a bearing surface upon which the support element with a counter-surface is supported, whereby elevations are arranged encirclingly on the surface of the bearing surface and concentric to one another and form an integral component of the bearing member, whereby every two adjacent elevations limit an encircling receiving space for elastic material of the support element.Type: GrantFiled: December 1, 2005Date of Patent: February 14, 2012Assignee: ThyssenKrupp Bilstein Suspension GmbHInventor: Michael Fritz
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Patent number: 8052161Abstract: A wheel suspension for a motor vehicle has a transverse control arm that can be attached to a vehicle body by way of bearings and a spring-elastic torsion bar assembly, and can be rotated about a longitudinal axis. The torsion bar assembly has a body spring that can be attached to the vehicle body with one end, and a transverse control arm spring that is attached to the transverse control arm with one end. The body spring and the transverse control arm spring are coupled with one another at their free ends. The transverse control arm spring and the body spring are coupled with one another by way of a setting element or a releasable connection, whereby the setting element or the releasable connection, respectively, allows rotation of the ends assigned to one another, for setting purposes.Type: GrantFiled: December 18, 2007Date of Patent: November 8, 2011Assignees: ThyssenKrupp Bilstein Suspension GmbH, ThyssenKrupp Presta München/Esslingen GmbHInventors: Alfred Preukschat, Thomas Brendecke, Luitpold Miller, Siegfried Ellmann
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Patent number: 8006989Abstract: A wheel suspension for a motor vehicle has a transverse control arm that can be attached to a vehicle body by way of bearings and can be rotated about a longitudinal axis, and a body spring configured as a torsion bar spring for absorbing rotational movements of the transverse control arm about the longitudinal axis. The body spring is disposed on the transverse control arm so as to rotate with it, with a first end. An electromechanical actuator for changing the angle of rotation of the body spring is disposed at a second end of the body spring. The wheel suspension has a damping element. The second end of the body spring is connected with a stress relief spring that is configured as a torsion bar spring, disposed coaxially with the body spring, and can be attached to the vehicle body.Type: GrantFiled: December 18, 2007Date of Patent: August 30, 2011Assignees: ThyssenKrupp Bilstein Suspension GmbH, ThyssenKrupp Presta München/Esslingen GmbHInventors: Alfred Preukschat, Thomas Brendecke, Luitpold Miller, Siegfried Ellmann
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Publication number: 20110042174Abstract: A hydraulic oscillation damper has a piston rod with a piston that is inserted into a damper tube filled with damping fluid, and divides the damper tube into first and second working chambers. First and second continuously adjustable damping valves are disposed in a common housing that is attached to the damper tube, and are connected hydraulically in parallel with the working piston. The housing has a first hydraulic chamber that is connected to the first working chamber via a first bore, and a second hydraulic chamber that is connected to the second working chamber via a second bore. A flow guiding element, which separates the two hydraulic chambers, guides the damping fluid flow to the first or second damping valve in response to a retraction or extension movement of the piston.Type: ApplicationFiled: March 19, 2009Publication date: February 24, 2011Applicant: ThyssenKrupp Bilstein Suspension GmbHInventors: Wolfgang Hamers, Andreas Feld
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Publication number: 20100155186Abstract: A regulable dashpot with shock-absorption force controls, especially intended for motor vehicles, with at least one flow-regulating system including one or more shock-absorption components for the compression phase and/or for the decompression phase. The object is to allow the dashpot to shift continuously between the hard and soft phases, whereby the valve-adjustment intervals can be varied at intervals that are not unnecessarily short or even unattainable. At least one valve assembly is accordingly supplied with variable flow impedance by regulating valve.Type: ApplicationFiled: March 3, 2010Publication date: June 24, 2010Applicant: ThyssenKrupp Bilstein Suspension GMBHInventors: Alfred PREUKSCHAT, Jürgen ADAMEK
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Patent number: 7721856Abstract: A vibration damper having a sensitive response behavior at very low amplitudes comprises a separating piston being disposed inside a bypass so as to move axially freely. The separating piston divides the bypass into two chambers mutually sealed from one another. Two valves are disposed in the bypass. The first valve acts in a compression stage as a pressure limiting valve and as a non return valve in an extension stage. The second valve acts as a pressure limiting valve in the extension stage and as a non return valve in the compression stage.Type: GrantFiled: October 25, 2006Date of Patent: May 25, 2010Assignee: ThyssenKrupp Bilstein Suspension GmbHInventors: Ole Goetz, Kais Saadeddin, Claus Weimann, Thomas Brendecke
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Patent number: 7699147Abstract: A regulable dashpot with shock-absorption force controls, especially intended for motor vehicles, with at least one flow-regulating system including one or more shock-absorption components for the compression phase and/or for the decompression phase. The object is to allow the dashpot to shift continuously between the hard and soft phases, whereby the valve-adjustment intervals can be varied at intervals that are not unnecessarily short or even unattainable. At least one valve assembly is accordingly supplied with variable flow impedance by a regulating valve (5 or 6).Type: GrantFiled: December 7, 2001Date of Patent: April 20, 2010Assignee: ThyssenKrupp Bilstein Suspension GmbHInventors: Alfred Preukschat, Jürgen Adamek
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Patent number: 7661663Abstract: A vibration damper is disclosed which includes a damper tube filled with a damping medium; a piston rod which can move in an oscillating and reciprocal manner in the damper tube and one end of which protrudes into the damper tube and which comprises at this end a piston rod extension and a shoulder. A piston divides the interior of the damper tube into a working chamber remote from the piston rod and a piston rod-side working chamber and which is disposed coaxially with respect to the piston rod extension and comprises restrictor openings and at least one spring washer covering these restrictor openings in each working chamber. A buffer spring is disposed in the piston rod-sideworking chamber.Type: GrantFiled: June 19, 2006Date of Patent: February 16, 2010Assignee: Thyssenkrupp Bilstein Suspension GmbHInventors: Michael Fritz, Uwe Klein
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Patent number: 7628256Abstract: A vibration damper providing amplitude-dependent damping for motor vehicles includes a first damping device including a piston rod which is disposed in a damping tube so as to be moveable in an oscillating manner and which supports a damping piston which divides the interior of the damping tube into a piston rod-side working chamber and a working chamber remote from the piston rod. The vibration damper further includes a second damping device which is disposed hydraulically parallel to the damping piston and includes an equalizing chamber which is divided into a first and a second partial chamber by a separating piston disposed so as to be axially displaceable in the equalizing chamber, wherein the first partial chamber is hydraulically connected to the piston rod-side working chamber and the second partial chamber is hydraulically connected to the working chamber remote from the piston rod.Type: GrantFiled: August 17, 2006Date of Patent: December 8, 2009Assignee: Thyssenkrupp Bilstein Suspension GmbHInventor: Andreas Krefeld
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Patent number: 7584829Abstract: A hydraulic vibration damper has a receiving pipe, a piston rod which projects into the receiving pipe at one end and which can be moved in an oscillating way in the receiving pipe, on the end, facing the receiving pipe, of which a working piston is disposed. The working piston comprises through-flow channels for the damping fluid which channels are effective in the pulling direction and pushing direction, and which working piston divides the inner chamber of the receiving pipe into a pulling chamber on the side of the piston rod and a pressure chamber remote from the piston rod, wherein at least a first through-flow channel can be covered to form a damping valve with a first resilient or spring-loaded valve washer which cooperates with a first valve seat.Type: GrantFiled: August 23, 2006Date of Patent: September 8, 2009Assignee: Thyssenkrupp Bilstein Suspension GmbHInventor: Klaus Schmidt
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Publication number: 20090189360Abstract: The invention relates to a spring strut for wheel suspension systems of vehicles, having a vibration damper (1) and a helical spring (2) partially surrounding the vibration damper (1), wherein the helical spring (2) is supported via a spring plate (3) on an outer pipe (4) of the vibration damper (1) and the spring plate (3) can be adjusted relative to the outer pipe (4). In order to develop such a spring strut in such a way that the standing height of vehicles with different unladen weights can be adjusted to always be the same by adjusting the spring plate, without the friction between the piston rod and the sealing and guiding assembly being disadvantageously increased, it is proposed in accordance with the invention that the line of application of force (5) of the helical spring (2) forms an acute angle (?) with the longitudinal axis (6) of the vibration damper (1) and the position of the spring plate (3) can be adjusted in the direction of the line of application of force (5).Type: ApplicationFiled: December 17, 2008Publication date: July 30, 2009Applicant: Thyssenkrupp Bilstein Suspension GmbHInventor: Michael Fritz
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Publication number: 20090189363Abstract: The invention relates to a gas pressure shock absorber for vehicle chassis having a damper tube (1) and a piston rod (3) which supports a working piston (2) and is disposed in a reciprocally moveable manner in the damper tube (1), wherein a first partial volume (1a) of the inner space of the damper tube (1) can be filled with a damping fluid and a second partial volume (1b) of the inner space of the damper tube (1) can be filled with a gas, and wherein the gas pressure shock absorber has a device for regulating the vehicle level, which is actuated by the introduction of a gas under pressure into the inner space of the damper tube (1).Type: ApplicationFiled: January 27, 2009Publication date: July 30, 2009Applicant: ThyssenKrupp Bilstein Suspension GmbHInventor: Michael FRITZ