Patents by Inventor Ralph Schimpf

Ralph Schimpf 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).

  • Publication number: 20170058964
    Abstract: A dog clutch for the controllable positive connection of two drive components situated coaxially around an axis of rotation. Two ring parts form the connection, including an inner ring and an outer ring that are movable axially relative to each other under external control to selectively make and break the connection therebetween. To produce the dog clutch simply and economically, the ring parts include teeth to form radial gearing with each other. At least one of the two ring parts is produced without machining, while its toothed part that forms the radial gearing is produced by punching and stamping.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventor: Ralph SCHIMPF
  • Patent number: 9518643
    Abstract: An axle differential transmission, including: a housing; a differential stage including at least one planetary gear assembly; an input shaft connected to the at least one planetary gear assembly; and a clutch assembly including an actuator, at least one first clutch plate non-rotatably connected to the input shaft, at least one second clutch plate non-rotatably connected to the housing, and a one-way clutch including at least one wedge clutch plate. For a initial drive mode, the actuator is arranged to compress the at least one first clutch plate, the at least one second clutch plate, and the at least one wedge clutch plate to non-rotatably connect the housing and the input shaft. For a final drive mode, relative rotation between the housing and the input shaft in a first circumferential direction is arranged to non-rotatably connect the housing, the input shaft, and the at least one wedge plate.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: December 13, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ralph Schimpf, Franz Kurth, Thorsten Biermann, Brian Lee
  • Publication number: 20160010736
    Abstract: An axle differential transmission, including: a housing; a differential stage including at least one planetary gear assembly; an input shaft connected to the at least one planetary gear assembly; and a clutch assembly including an actuator, at least one first clutch plate non-rotatably connected to the input shaft, at least one second clutch plate non-rotatably connected to the housing, and a one-way clutch including at least one wedge clutch plate. For a initial drive mode, the actuator is arranged to compress the at least one first clutch plate, the at least one second clutch plate, and the at least one wedge clutch plate to non-rotatably connect the housing and the input shaft. For a final drive mode, relative rotation between the housing and the input shaft in a first circumferential direction is arranged to non-rotatably connect the housing, the input shaft, and the at least one wedge plate.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 14, 2016
    Inventors: Ralph Schimpf, Franz Kurth, Thorsten Biermann, Brian Lee
  • Patent number: 9033844
    Abstract: A differential gear having a gear housing, an epicyclic gear housing which is arranged in the gear housing in a manner allowing rotation about a gear axis, a planetary carrier which is arranged in the epicyclic gear housing coaxial to the gear axle, a first output sun gear, a second output sun gear, a planetary arrangement accommodated in the planetary carrier for the purpose of coupling the two output sun gears in a manner allowing rotation in opposite directions, a brake device having a brake disk pack for the purpose of generating a coupling torque which couples the planetary carrier to the epicyclic gear housing, and an actuating mechanism for the purpose of generating an axial force which engages the brake device. The planetary arrangement comprises multiple revolving planets which as such are able to rotate about planetary axes which are oriented parallel to the gear axle.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 19, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ralph Schimpf, Thorsten Biermann, Franz Kurth
  • Publication number: 20150045171
    Abstract: An axle differential transmission for an engageably driven vehicle axle, which has two shaft ends and is part of a motor vehicle, wherein said axle differential transmission comprises a clutch assembly, which is integrated in a transmission case between a drive shaft and a housing input shaft of a differential stage, for selectively connecting a drive to the vehicle axle. The clutch assembly comprises clutch plates, wherein at least one part of the clutch plates comprises freewheel means, in order to transmit the driving torque, generated by the drive shaft in the torque transmission direction of the freewheel means that corresponds to a forward direction of travel of the motor vehicle, to the differential stage, as soon as this differential stage is above a defined limit torque and the driving torque is distributed in equal parts to the shaft ends of the vehicle axle.
    Type: Application
    Filed: July 9, 2014
    Publication date: February 12, 2015
    Inventors: Ralph Schimpf, Franz Kurth, Thorsten Biermann, Brian Lee
  • Publication number: 20140309072
    Abstract: A differential gear having a gear housing, an epicyclic gear housing, which is arranged in the gear housing in a manner allowing rotation about a gear axis, a drive wheel which sits on the epicyclic gear housing for the purpose of driving the epicyclic gear housing, a first bearing device for the purpose of mounting a first axial end region of the epicyclic gear housing radially, and a second bearing device for the purpose of mounting a second axial end region of the epicyclic gear housing radially, wherein the second bearing device has a first and a second roller element crown which bear axially in opposite directions, and the axial position of the epicyclic gear housing with respect to the gear housing is determined by the second bearing device.
    Type: Application
    Filed: March 18, 2014
    Publication date: October 16, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Ralph Schimpf, Thorsten Biermann
  • Publication number: 20140309075
    Abstract: A differential gear having a gear housing, an epicyclic gear housing which is arranged in the gear housing in a manner allowing rotation about a gear axis, a planetary carrier which is arranged in the epicyclic gear housing coaxial to the gear axle, a first output sun gear, a second output sun gear, a planetary arrangement accommodated in the planetary carrier for the purpose of coupling the two output sun gears in a manner allowing rotation in opposite directions, a brake device having a brake disk pack for the purpose of generating a coupling torque which couples the planetary carrier to the epicyclic gear housing, and an actuating mechanism for the purpose of generating an axial force which engages the brake device. The planetary arrangement comprises multiple revolving planets which as such are able to rotate about planetary axes which are oriented parallel to the gear axle.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 16, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Ralph Schimpf, Thorsten Biermann, Franz Kurth
  • Publication number: 20140309076
    Abstract: A differential gear having a gear housing, an epicyclic gear housing which is arranged in the gear housing in a manner allowing rotation about a gear axis, and a planetary carrier which sits in the epicyclic gear housing, wherein the drive power applied to the epicyclic gear housing is divided by means of this differential gear, and the planetary carrier and the epicyclic gear housing can be coupled selectively by force fit via a coupling device. The differential gear has a brake device with a brake disk pack for the purpose of generating a coupling torque which couples the planetary carrier to the epicyclic gear housing, and an actuating mechanism for the purpose of generating an axial force which engages the brake device, wherein the bearing device has a first roller bearing with an outer bearing ring fixed to the gear housing.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 16, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Ralph Schimpf, Thorsten Biermann, Franz Kurth
  • Publication number: 20050048017
    Abstract: The invention relates to the use of one or more surface-active substances selected from the group consisting of surfactants, which have a ratio of hemolysis value to denaturation index of greater than or equal to 1, for obtaining or increasing the selectivity of cosmetic or dermatological cleansing preparations.
    Type: Application
    Filed: August 23, 2002
    Publication date: March 3, 2005
    Inventors: Manfred Strassner, Stephan Ruppert, Andreas Schepky, Jens-Peter Vietzke, Harald Albrecht, Urte Koop, Ralph Schimpf, Joachim Ennen, Claudius Rapp
  • Publication number: 20050032888
    Abstract: Use of ascorbic acid for producing topical preparations with angiogenic effects.
    Type: Application
    Filed: June 14, 2002
    Publication date: February 10, 2005
    Inventors: Kirsten Sauermann, Ralph Schimpf, Alexander Filbry, Roger Wepf, Volker Schreiner, Soren Jaspers, Uwe Schonrock, Joachim Ennen, Gerhard Sauermann
  • Publication number: 20050032656
    Abstract: The invention is a cosmetic or dermatological cleaning preparation, comprising one or more interface-active substances selected from the group consisting of alkyl glucosides having the formula where R is a branched or unbranched alkyl radical having 4 to 24 carbon atoms and where {overscore (DP)} is an average degree of glucosylation of up to 2. The preparation can be applied to the skin to improve a skin condition. In particular, the alkyl glucosides of the invention can be used in cosmetic or dermatological preparations to obtain or enhance selectivity the cosmetic or dermatological cleaning formulations.
    Type: Application
    Filed: May 7, 2004
    Publication date: February 10, 2005
    Inventors: Manfred Strassner, Stephan Ruppert, Andreas Schepky, Jens-Peter Vietzke, Harald Albrecht, Urte Koop, Ralph Schimpf, Joachim Ennen, Claudius Rapp
  • Patent number: 6825179
    Abstract: Active ingredient combinations of cyclodextrins and at least one quinone and/or at least one hydroquinone for use in cosmetic or dermatological formulations.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: November 30, 2004
    Assignee: Beiersdorf AG
    Inventors: Jens Nielsen, Heiner Max, Birgit Hargens, Ralph Schimpf
  • Publication number: 20020150601
    Abstract: Use of folic acid and/or derivatives thereof for the preparation of cosmetic or dermatological preparations for the prophylaxis of damage to DNA intrinsic to the skin and/or for the repair of existing damage to DNa intrinsic to the skin.
    Type: Application
    Filed: December 12, 2001
    Publication date: October 17, 2002
    Applicant: Beiersdorf Aktiengesellschaft
    Inventors: Heiner Max, Katriu Will, Ralph Schimpf, Thomas Raschke, Birgit Hargens
  • Publication number: 20020045596
    Abstract: Active ingredient combinations of cyclodextrins and at least one quinone and/or at least one hydroquinone for use in cosmetic or dermatological formulations.
    Type: Application
    Filed: July 17, 2001
    Publication date: April 18, 2002
    Inventors: Jens Nielsen, Heiner Max, Birgit Hargens, Ralph Schimpf