Patents by Inventor Wolfgang Hamers
Wolfgang Hamers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11285774Abstract: A hydraulic vibration damper, in particular for a vehicle chassis, includes a cylinder tube for receiving a hydraulic fluid. A piston is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers. A piston rod is oriented parallel to the cylinder tube axis and is connected to the piston. At least one valve assembly for damping the piston movement in a direction of actuation is arranged at a fluid leadthrough. A bypass duct includes a sub-duct provided in addition to the fluid leadthrough between the two working chambers. A valve arrangement with continuously adjustable damping force is provided which regulates the throughflow through the fluid leadthrough and the sub-duct. The sub-duct includes a throttling mechanism, having a throttle, and a non-return valve. The throttle and the non-return valve of the sub-duct are arranged in series.Type: GrantFiled: March 26, 2018Date of Patent: March 29, 2022Assignees: THYSSENKRUPP BILSTEIN GMBH, THYSSENKRUPP AGInventor: Wolfgang Hamers
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Patent number: 10774896Abstract: A method for operating a controllable shock absorber may involve damping movement of a valve body by loading the valve body with a back pressure on an outflow side. Further, the controllable shock absorber may include a cylinder tube, a piston within the cylinder tube that divides the cylinder tube into two working spaces and includes a couple fluid leadthroughs connecting the working spaces, and first and second valve assemblies for damping piston movement in first and second actuating directions that are disposed on the leadthroughs. Each valve assembly may have a pilot control chamber and a valve plate that is either seated on or spaced apart from a valve seat in closed and open valve positions. Each valve plate can be prestressed closed by pressure loading the pilot control chamber. The pressures of the pilot control chambers can be set by a pilot control valve that comprises a movable valve body. As a result, an outflow cross section between the pilot control chambers and the working spaces can be set.Type: GrantFiled: September 11, 2015Date of Patent: September 15, 2020Assignees: THYSSENKRUPP BILSTEIN GMBH, THYSSENKRUPP AGInventors: Wolfgang Hamers, Tobias Lenz
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Patent number: 10655702Abstract: A controllable vibration damper may include a cylinder tube with hydraulic fluid, a piston movable axially within the cylinder tube along an axis and that divides the cylinder tube into two working spaces, a piston rod parallel to the cylinder tube axis and connected at one end to the piston, fluid passages from one working space into another working space, a first valve subassembly on a first fluid passage for damping piston movement in a first direction, and a second valve subassembly on a second fluid passage for damping piston movement in a second direction. Each valve subassembly may include a valve disk seated on a valve seat in a closed position and spaced apart from the valve seat in an open position, as well as a pilot chamber containing an adjustable pressure that pushes the valve disk into the closed position.Type: GrantFiled: December 17, 2014Date of Patent: May 19, 2020Assignee: THYSSENKRUPP BILSTEIN GMBHInventors: Wolfgang Hamers, Ole Götz, Klaus Schmidt, Dmitrij Smeljanskij
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Publication number: 20200031190Abstract: A hydraulic vibration damper, in particular for a vehicle chassis, includes a cylinder tube for receiving a hydraulic fluid. A piston is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers. A piston rod is oriented parallel to the cylinder tube axis and is connected to the piston. At least one valve assembly for damping the piston movement in a direction of actuation is arranged at a fluid leadthrough. A bypass duct includes a sub-duct provided in addition to the fluid leadthrough between the two working chambers. A valve arrangement with continuously adjustable damping force is provided which regulates the throughflow through the fluid leadthrough and the sub-duct. The sub-duct includes a throttling mechanism, having a throttle, and a non-return valve. The throttle and the non-return valve of the sub-duct are arranged in series.Type: ApplicationFiled: March 26, 2018Publication date: January 30, 2020Applicants: THYSSENKRUPP BILSTEIN GMBH, thyssenkrupp AGInventor: Wolfgang HAMERS
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Patent number: 10526014Abstract: A regulable vibration damper, which may be utilized in a vehicle chassis, for example, may comprise a cylinder barrel that contains hydraulic fluid in sealed-off fashion, a piston that is axially movable within the cylinder barrel along a cylinder barrel axis and that divides the cylinder barrel into two working chambers, and a piston rod oriented parallel to the cylinder barrel axis and that is connected to the piston. The piston may comprise at least two fluid leadthroughs that connect the working chambers. A first valve assembly for damping piston movement in a first actuation direction may be arranged at a first fluid leadthrough, and a second valve assembly for damping piston movement in a second actuation direction may be arranged at a second fluid leadthrough. In the piston, one or more bypass ducts with throughflow cross sections of different size for the two throughflow directions may form fluidic connections between the two working chambers that bypass the vestibules.Type: GrantFiled: October 22, 2015Date of Patent: January 7, 2020Assignees: THYSSENKRUPP BILSTEIN GMBH, THYSSENKRUPP AGInventors: Wolfgang Hamers, Dmitrij Smeljanskij
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Patent number: 9920810Abstract: The present invention relates to a damping valve for a shock absorber, comprising a base body with a first support body and with a second support body and comprising one or more valve spring discs which separate a first damping fluid space from a second damping fluid space, wherein the valve spring discs are supported against the first support body via an inner edge support, and against the second support body via an outer edge support, and which control a passage of damping fluid in both directions by virtue of the fact that the valve spring discs lift-off either from the inner edge support or from the outer edge support, by elastic deflection. According to the invention, a stroke movable control body is provided which is prestressed against the valve spring discs, so that the control behaviour of the valve spring discs can be adjusted via the edge supports by the prestress of the control body.Type: GrantFiled: October 4, 2013Date of Patent: March 20, 2018Assignee: THYSSENKRUPP BILSTEIN GMBHInventors: Dmitrij Smeljanskij, Klaus Schmidt, Ole Götz, Wolfgang Hamers, Freddy Woenarta
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Publication number: 20170313355Abstract: A regulable vibration damper, which may be utilized in a vehicle chassis, for example, may comprise a cylinder barrel that contains hydraulic fluid in sealed-off fashion, a piston that is axially movable within the cylinder barrel along a cylinder barrel axis and that divides the cylinder barrel into two working chambers, and a piston rod oriented parallel to the cylinder barrel axis and that is connected to the piston. The piston may comprise at least two fluid leadthroughs that connect the working chambers. A first valve assembly for damping piston movement in a first actuation direction may be arranged at a first fluid leadthrough, and a second valve assembly for damping piston movement in a second actuation direction may be arranged at a second fluid leadthrough. In the piston, one or more bypass ducts with throughflow cross sections of different size for the two throughflow directions may form fluidic connections between the two working chambers that bypass the vestibules.Type: ApplicationFiled: October 22, 2015Publication date: November 2, 2017Applicants: ThyssenKrupp Bilstein GmbH, ThyssenKrupp AGInventors: Wolfgang Hamers, Dmitrij Smeljanskij
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Publication number: 20170234396Abstract: A method for operating a controllable shock absorber may involve damping movement of a valve body by loading the valve body with a back pressure on an outflow side. Further, the controllable shock absorber may include a cylinder tube, a piston within the cylinder tube that divides the cylinder tube into two working spaces and includes a couple fluid leadthroughs connecting the working spaces, and first and second valve assemblies for damping piston movement in first and second actuating directions that are disposed on the leadthroughs. Each valve assembly may have a pilot control chamber and a valve plate that is either seated on or spaced apart from a valve seat in closed and open valve positions. Each valve plate can be prestressed closed by pressure loading the pilot control chamber. The pressures of the pilot control chambers can be set by a pilot control valve that comprises a movable valve body. As a result, an outflow cross section between the pilot control chambers and the working spaces can be set.Type: ApplicationFiled: September 11, 2015Publication date: August 17, 2017Applicants: ThyssenKrupp Bilstein GmbH, ThyssenKrupp AGInventors: Wolfgang Hamers, Tobias Lenz
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Publication number: 20160312851Abstract: A controllable vibration damper may include a cylinder tube with hydraulic fluid, a piston movable axially within the cylinder tube along an axis and that divides the cylinder tube into two working spaces, a piston rod parallel to the cylinder tube axis and connected at one end to the piston, fluid passages from one working space into another working space, a first valve subassembly on a first fluid passage for damping piston movement in a first direction, and a second valve subassembly on a second fluid passage for damping piston movement in a second direction. Each valve subassembly may include a valve disk seated on a valve seat in a closed position and spaced apart from the valve seat in an open position, as well as a pilot chamber containing an adjustable pressure that pushes the valve disk into the closed position.Type: ApplicationFiled: December 17, 2014Publication date: October 27, 2016Applicant: ThyssenKrupp Bilstein GmbHInventors: Wolfgang Hamers, Ole Götz, Klaus Schmidt, Dmitrij Smeljanskij
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Publication number: 20150316118Abstract: The present invention relates to a damping valve for a shock absorber, comprising a base body with a first support body and with a second support body and comprising one or more valve spring discs which separate a first damping fluid space from a second damping fluid space, wherein the valve spring discs are supported against the first support body via an inner edge support, and against the second support body via an outer edge support, and which control a passage of damping fluid in both directions by virtue of the fact that the valve spring discs lift-off either from the inner edge support or from the outer edge support, by elastic deflection. According to the invention, a stroke movable control body is provided which is prestressed against the valve spring discs, so that the control behaviour of the valve spring discs can be adjusted via the edge supports by the prestress of the control body.Type: ApplicationFiled: October 4, 2013Publication date: November 5, 2015Applicant: THYSSENKRUPP BILSTEIN GMBHInventors: Dmitrij SMELJANSKIJ, Klaus SCHMIDT, Ole GÖTZ, Wolfgang HAMERS, Freddy WOENARTA
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Patent number: 8997952Abstract: A motor-vehicle shock absorber has a tube at least partially filled with damping liquid and extending, a piston rod axially shiftable inside the damper tube, and a piston connected to the piston rod and subdividing the damper tube into a piston rod-side working chamber and an opposite working chamber. An on-off control valve is axially movable inside the piston between a closed and an open position. A first soft-characteristic damping valve inside the piston through which the damping liquid may flow in both flow directions is connectable to a flow path of the damping liquid from one into the other working chamber through the control valve. A second hard-characteristic damping valve through which the damping liquid may flow in both flow directions is also provided in the piston.Type: GrantFiled: August 23, 2010Date of Patent: April 7, 2015Assignee: ThyssenKrupp Bilstein GmbHInventors: Ole Göetz, Wolfgang Hamers, Klaus Schmidt, Dmitrij Smeljanskij, Freddy Woenarta
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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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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: 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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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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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: 20090283706Abstract: 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: ApplicationFiled: May 27, 2009Publication date: November 19, 2009Inventors: Klaus Schmidt, Wolfgang Hamers
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Publication number: 20090236193Abstract: The invention relates to a flow-control valve (1) for a hydraulic shock absorber. Components of the basic structure of the flow-control valve (1) 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: ApplicationFiled: March 17, 2009Publication date: September 24, 2009Inventors: Klaus SCHMIDT, Wolfgang HAMERS
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Publication number: 20050121273Abstract: Bypass valve for a hydraulic dashpot, or shock absorber. The valve connects the dashpot's two working compartments together hydraulically and is provided with a valve bolt (1). The valve bolt has a shaft (3) and a hollow adjustment bolt. The adjustment bolt slides back and forth in a stationary and at least partly hollow guide and operates in conjunction with at least one port (8) in the wall of the guide such that the open cross-section of the port can be varied by the axial motion of the adjustment bolt. A mechanism (A) for controlling the axial motion of the adjustment bolt. To minimize strains, the guide is fixed axially and radially and the adjustment bolt is larger than the guide, which accordingly constitutes a pin that the adjustment bolt can slide over axially.Type: ApplicationFiled: November 29, 2004Publication date: June 9, 2005Inventor: Wolfgang Hamers