Patents by Inventor Ralf FAMBACH
Ralf FAMBACH 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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Publication number: 20190176558Abstract: An adjustable spring carrier includes a spring plate. At least one spring plate is axially displaceable by an actuator and is fixed with respect to rotation in circumferential direction relative to a longitudinal axis of the spring carrier. A housing for a drive unit of the actuator and a spring plate abutment surface are connected to one another, and the housing is driven by the actuator for the axial movement of the spring plate.Type: ApplicationFiled: January 16, 2017Publication date: June 13, 2019Inventors: Josef RENN, Ralf FAMBACH, Jan ROSSBERG, Tom SCHNEIDER
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Patent number: 10072624Abstract: A starting element (100) for use, for example, in a drivetrain of a motor vehicle, includes a piston (310) which divides a first volume (560) that can be filled with a fluid from a second volume (570) that can be filled with a fluid, wherein the piston (310) comprises at least one fluid passage (640) which allows the fluid at least occasionally to pass through the piston (310) from the first volume (560) into the second volume (570) and/or from the second volume (570) into the first volume (560). The at least one fluid passage (640) comprises a passage component part (650) and a receiving opening (660) in the piston (310). The passage component part (650) is inserted into the receiving opening so that at least one passage opening (670) is formed which allows the fluid to pass through at least occasionally.Type: GrantFiled: May 21, 2014Date of Patent: September 11, 2018Assignee: ZF Friedrichshafen AGInventors: Ralf Fambach, Peter Frey, Michael Heuler, Reinhard Feldhaus, Horst Zinssmeister
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Patent number: 9151375Abstract: A hydrodynamic coupling arrangement, particularly hydrodynamic torque converter, wherein at least one torsional vibration damper arrangement comprises at least two torsional vibration dampers which are arranged so as to be radially staggered and substantially aligned axially with respect to one another, wherein the first torsional vibration damper is arranged on the radially outer side of the second torsional vibration damper, and wherein the at least one torsional vibration damper arrangement is coupled with the other torsional vibration damper arrangement in an area radially between the first damper element unit and the second damper element unit.Type: GrantFiled: April 27, 2012Date of Patent: October 6, 2015Assignee: ZF Friedrichshafen AGInventors: Matthias Kram, Michael Wirachowski, Monika Rössner, Jörg Sudau, Erwin Wack, Reinhard Feldhaus, Ralf Fambach
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Publication number: 20140345553Abstract: A starting element (100) for use, for example, in a drivetrain of a motor vehicle, includes a piston (310) which divides a first volume (560) that can be filled with a fluid from a second volume (570) that can be filled with a fluid, wherein the piston (310) comprises at least one fluid passage (640) which allows the fluid at least occasionally to pass through the piston (310) from the first volume (560) into the second volume (570) and/or from the second volume (570) into the first volume (560). The at least one fluid passage (640) comprises a passage component part (650) and a receiving opening (660) in the piston (310). The passage component part (650) is inserted into the receiving opening so that at least one passage opening (670) is formed which allows the fluid to pass through at least occasionally.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Inventors: Ralf FAMBACH, Peter FREY, Michael HEULER, Reinhard FELDHAUS, Horst ZINSSMEISTER
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Patent number: 8727087Abstract: A torque transmission includes a housing arrangement drivable around an axis of rotation and filled with fluid and a clutch arrangement between the housing arrangement and a driven member. The clutch arrangement has a first friction surface formation rotatable with the housing arrangement and a second friction surface formation rotatable with the driven member. A clutch piston is movable axially for producing and canceling frictional engagement of the first and the second friction surface formation. A piston carrying element is connected to the clutch piston on the radially inner side for axial movement of the clutch piston. The piston carrying element has in its radially inner end region a first axial supporting area for axially supporting the driven member at the piston carrying element and a second axial supporting area for supporting the piston carrying element at the housing arrangement.Type: GrantFiled: February 8, 2012Date of Patent: May 20, 2014Assignee: ZF Friedrichshafen AGInventors: Ralf Fambach, Georg Mencher, Gregor Sueck, Andreas Grell, Michael Heuler
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Publication number: 20130037368Abstract: A torque transmission includes a housing arrangement drivable around an axis of rotation and filled with fluid and a clutch arrangement between the housing arrangement and a driven member. The clutch arrangement has a first friction surface formation rotatable with the housing arrangement and a second friction surface formation rotatable with the driven member. A clutch piston is movable axially for producing and canceling frictional engagement of the first and the second friction surface formation. A piston carrying element is connected to the clutch piston on the radially inner side for axial movement of the clutch piston. The piston carrying element has in its radially inner end region a first axial supporting area for axially supporting the driven member at the piston carrying element and a second axial supporting area for supporting the piston carrying element at the housing arrangement.Type: ApplicationFiled: February 8, 2012Publication date: February 14, 2013Applicant: ZF Friedrichshafen AGInventors: Ralf FAMBACH, Georg MENCHER, Gregor SUECK, Andreas GRELL, Michael HEULER
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Publication number: 20120273317Abstract: A hydrodynamic coupling arrangement, particularly hydrodynamic torque converter, wherein at least one torsional vibration damper arrangement comprises at least two torsional vibration dampers which are arranged so as to be radially staggered and substantially aligned axially with respect to one another, wherein the first torsional vibration damper is arranged on the radially outer side of the second torsional vibration damper, and wherein the at least one torsional vibration damper arrangement is coupled with the other torsional vibration damper arrangement in an area radially between the first damper element unit and the second damper element unit.Type: ApplicationFiled: April 27, 2012Publication date: November 1, 2012Applicant: ZF Friedrichshafen AGInventors: Matthias KRAM, Michael Wirachowski, Monika Rössner, Jörg Sudau, Erwin Wack, Reinhard Feldhaus, Ralf Fambach
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Publication number: 20120205212Abstract: A torque transmission arrangement includes a housing arrangement which is drivable for rotation around an axis of rotation and a clutch arrangement in the torque transmission path between the housing arrangement and a driven member. The clutch arrangement has a first friction surface formation, which is rotatable with the housing arrangement and a second friction surface formation, which is rotatable with the driven member, and a clutch piston, which is movable axially for producing and canceling a frictional engagement of the first friction surface formation with the second friction surface formation. A piston carrying element, which is connected in a substantially fluid-tight manner to the clutch piston on the radially inner side, permits an axial movement of the clutch piston. The piston carrying element is produced substantially in its entirety from plastic material.Type: ApplicationFiled: February 8, 2012Publication date: August 16, 2012Applicant: ZF Friedrichshafen AGInventors: Ralf FAMBACH, Georg MENCHER, Gregor SUECK, Andreas GRELL, Michael HEULER