Patents by Inventor Manfred Rahm

Manfred Rahm 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).

  • Patent number: 10641362
    Abstract: A transmission arrangement (1) for the controllable distribution of drive torque from an input element (2) to at least one output element (3), comprising a first transmission part region (4), namely a planetary gear mechanism, and an additional drive unit (5), the first transmission part region (4) being drive-connected directly or indirectly to the input element (2) and to the additional drive unit (5), and the first transmission part region (4) being drive-connected directly or indirectly to the output element (3).
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: May 5, 2020
    Assignee: MAGNA POWERTRAIN GMBH & CO KG
    Inventors: Werner Brendl, Gerhard Hofer, Klaus Nenninger, Peter Pisek, Manfred Rahm, Jan Wiechmann, Hansdieter Wiedner
  • Publication number: 20180363738
    Abstract: A transmission arrangement (1) for the controllable distribution of drive torque from an input element (2) to at least one output element (3), comprising a first transmission part region (4), namely a planetary gear mechanism, and an additional drive unit (5), the first transmission part region (4) being drive-connected directly or indirectly to the input element (2) and to the additional drive unit (5), and the first transmission part region (4) being drive-connected directly or indirectly to the output element (3).
    Type: Application
    Filed: December 2, 2016
    Publication date: December 20, 2018
    Inventors: Werner BRENDL, Gerhard HOFER, Klaus NENNINGER, Peter PISEK, Manfred RAHM, Jan WIECHMANN, Hansdieter WIEDNER
  • Patent number: 7951036
    Abstract: Disclosed is a differential transmission unit featuring active controlling of the moment distribution. Said differential transmission unit comprises a differential transmission (4) with two output shafts (6, 7), the cage (5) of said differential transmission (4) forming the input member, and one respective controlled frictional clutch (22, 26) that is associated with an output shaft. The primary part (22) of the clutch is drivingly connected to the input member (5) while the secondary part (26) of the clutch is drivingly connected to the associated output shaft (6, 7), at least one of the driving connections being provided with an increased or reduced transmission ratio.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 31, 2011
    Assignee: MAGNA Powertrain AG & Co KG
    Inventors: Walter Sackl, Manfred Rahm, Jürgen Schranz
  • Patent number: 7946401
    Abstract: A multi-disk clutch having a plurality of interengaging disks movable along a longitudinal clutch axis and a resetting device for the mutual release of adjacent disks along a release distance, with the release distance being bounded by an abutment device. The abutment device includes at least one contact section of a clutch part movable along the longitudinal clutch axis and at least one contact section of an axially fixed clutch part, with the moving clutch part and the axially fixed clutch part having different thermal coefficients of expansion and with the contact sections at both sides cooperating such that the bounding of the release distance varies in dependence on the temperature, with at least one of the contact sections having a sloping surface.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: May 24, 2011
    Assignee: MAGNA Powertrain AG & Co KG
    Inventors: Thomas Linortner, Manfred Rahm
  • Publication number: 20100285917
    Abstract: A transmission has a rotatable differential cage (74) and two output shafts (64). In order to distribute a torque between the output shafts (64), at least one balancing wheel (76) is rotatably mounted on the differential cage (74), which balancing wheel (76) is drive-coupled to a respective drive wheel (78) of the output shafts (64). The gearing also has at least one concavely curved coupling wheel (80) which is drive-coupled firstly to at least one of the drive wheels (78) and secondly to at least one hollow shaft (82). The hollow shaft (82) surrounds one of the output shafts (64). The hollow shaft (82) can be braked or driven relative to a part of the gearing.
    Type: Application
    Filed: October 29, 2007
    Publication date: November 11, 2010
    Applicant: Magna Powertrain AG & Co. KG
    Inventor: Manfred Rahm
  • Patent number: 7791000
    Abstract: A method of connecting a rotationally symmetrical part (11) having precision-machined functional surfaces (16) to a hub part (21) by welding is to deliver a distortion-free end product. To this end, the rotationally symmetrical part (11) and the hub part (12), in their longitudinal sections, are dimensioned in such a way that, when the rotationally symmetrical part (11) is shrunk onto or pressed onto the hub part (12), stresses are produced in the former and said stresses produce deformations which are opposed to the stresses to be expected during the subsequent welding and to deformations caused by said stresses. This is achieved by one of the contact surfaces (14; 15) being conical or by shaping the rotationally symmetrical part (11).
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: September 7, 2010
    Assignee: MAGNA Powertrain AG & Co. KG
    Inventor: Manfred Rahm
  • Publication number: 20080287246
    Abstract: Disclosed is a differential transmission unit featuring active controlling of the moment distribution. Said differential transmission unit comprises a differential transmission (4) with two output shafts (6, 7), the cage (5) of said differential transmission (4) forming the input member, and one respective controlled frictional clutch (22, 26) that is associated with an output shaft. The primary part (22) of the clutch is drivingly connected to the input member (5) while the secondary part (26) of the clutch is drivingly connected to the associated output shaft (6, 7), at least one of the driving connections being provided with an increased or reduced transmission ratio.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 20, 2008
    Inventors: Walter Sackl, Manfred Rahm, Jurgen Schranz
  • Publication number: 20080277231
    Abstract: A multi-disk clutch having a plurality of interengaging disks movable along a longitudinal clutch axis and a resetting device for the mutual release of adjacent disks along a release distance, with the release distance being bounded by an abutment device. The abutment device includes at least one contact section of a clutch part movable along the longitudinal clutch axis and at least one contact section of an axially fixed clutch part, with the moving clutch part and the axially fixed clutch part having different thermal coefficients of expansion and with the contact sections at both sides cooperating such that the bounding of the release distance varies in dependence on the temperature, with at least one of the contact sections having a sloping surface.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: MAGNA Powertrain AG & Co KG
    Inventors: Thomas Linortner, Manfred Rahm
  • Publication number: 20070034612
    Abstract: A method of connecting a rotationally symmetrical part (11) having precision-machined functional surfaces (16) to a hub part (21) by welding is to deliver a distortion-free end product. To this end, the rotationally symmetrical part (11) and the hub part (12), in their longitudinal sections, are dimensioned in such a way that, when the rotationally symmetrical part (11) is shrunk onto or pressed onto the hub part (12), stresses are produced in the former and said stresses produce deformations which are opposed to the stresses to be expected during the subsequent welding and to deformations caused by said stresses. This is achieved by one of the contact surfaces (14; 15) being conical or by shaping the rotationally symmetrical part (11).
    Type: Application
    Filed: March 22, 2004
    Publication date: February 15, 2007
    Inventor: Manfred Rahm