Patents by Inventor Marc Helfer

Marc Helfer 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: 11401981
    Abstract: A switching unit for a hybrid module for a drivetrain of a hybrid vehicle is provided. A first clutch is selectively closable to transmit torque from a drive shaft to a first output shaft. A second clutch is selectively closable to transmit torque from the drive shaft to a second output shaft. A plurality of ducts include a cooling oil supply duct, a first cooling oil duct configured to supply cooling oil to the first clutch, and a second cooling oil duct configured to supply cooling oil to the second duct. A switching unit selectively supplies cooling oil to the first and second clutches via the first and second cooling oil ducts, respectively, wherein the switching unit includes a slide having an aperture extending therethrough, and the slide is configured to move to alternatively fluidly the coiling oil supply duct with the first or second cooling oil ducts.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: August 2, 2022
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Steffen Lehmann, Marc Helfer, Dirk Hofstetter
  • Patent number: 10968961
    Abstract: A friction clutch for coupling a drive shaft of a motor vehicle engine to a transmission input shaft of a motor vehicle transmission includes a lamina, an axially movable contact plate, and a plurality of friction disks. The lamina has a first friction surface facing in a first axial direction, and a second friction surface facing in a second axial direction, opposite the first axial direction. The contact plate has a plurality of holders arranged to hold the lamina. Each of the holders forms a positive connection with the lamina in the circumferential direction, and each of the first friction surface and the second friction surface is frictionally connectible to a friction disk to transmit torque. A first friction disk is arranged to be positioned between a counter plate and the lamina, and a second friction disk is positioned between the lamina and the contact plate.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: April 6, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Vladimir Merk, Christophe Acker, Sebastien Morel, Alexander Obitz, Marc Helfer
  • Publication number: 20200096053
    Abstract: A switching unit for a hybrid module for a drivetrain of a hybrid vehicle is provided. A first clutch is selectively closable to transmit torque from a drive shaft to a first output shaft. A second clutch is selectively closable to transmit torque from the drive shaft to a second output shaft. A plurality of ducts include a cooling oil supply duct, a first cooling oil duct configured to supply cooling oil to the first clutch, and a second cooling oil duct configured to supply cooling oil to the second duct. A switching unit selectively supplies cooling oil to the first and second clutches via the first and second cooling oil ducts, respectively, wherein the switching unit includes a slide having an aperture extending therethrough, and the slide is configured to move to alternatively fluidly the coiling oil supply duct with the first or second cooling oil ducts.
    Type: Application
    Filed: April 12, 2018
    Publication date: March 26, 2020
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Steffen LEHMANN, Marc HELFER, Dirk HOFSTETTER
  • Publication number: 20200056665
    Abstract: A friction clutch for coupling a drive shaft of a motor vehicle engine to a transmission input shaft of a motor vehicle transmission includes a lamina, an axially movable contact plate, and a plurality of friction disks. The lamina has a first friction surface facing in a first axial direction, and a second friction surface facing in a second axial direction, opposite the first axial direction. The contact plate has a plurality of holders arranged to hold the lamina. Each of the holders forms a positive connection with the lamina in the circumferential direction, and each of the first friction surface and the second friction surface is frictionally connectible to a friction disk to transmit torque. A first friction disk is arranged to be positioned between a counter plate and the lamina, and a second friction disk is positioned between the lamina and the contact plate.
    Type: Application
    Filed: April 5, 2018
    Publication date: February 20, 2020
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Vladimir Merk, Christophe Acker, Sebastien Morel, Alexander Obitz, Marc Helfer
  • Patent number: 6463726
    Abstract: A hay harvesting machine including a frame with several windrowing rotors, the frame including a draft beam and a connecting beam which is articulated with respect to the draft beam, at least the rotor of the connecting beam located farthest back being equipped with a windrowing deflector. The machine includes a retractable stop for the movement of the connecting beam about its axis of articulation, and a device for shifting the deflector notably with respect to the corresponding rotor. A device controls the stop, which device is actuated by the shifting device. The stop prevents the connecting beam and the corresponding rotor from moving from a first work position into a second work position as long as the deflector can collide with the rotor which precedes it. When the deflector is shifted into a position where the risk of collision is eliminated, the stop is retracted and the change in position is possible.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: October 15, 2002
    Assignee: Kuhn S.A.
    Inventors: Marc Helfer, Michel Quirin
  • Patent number: 6050076
    Abstract: A haymaking machine, especially a windrower of mown plant matter, comprisinga frameseveral windrowing rotors which are driven in rotation during work about substantially vertical axes having supports fitted with carrier wheels,the frame comprising a draft beam and a connecting beam to which at least one of the windrowing rotors is connected,the connecting beam being articulated with respect to the draft beam so that it can be moved, together with the rotor or rotors connected to it, laterally to the right and/or to the left,at least the rotor furthest from the articulation to the draft beam being flanked by a windrowing deflector which can be adjusted into several positions with respect to the rotor,the windrowing deflector is connected by means of at least one lever to a support,the support is connected to the substantially vertical axis of the rotor beside which the windrowing deflector is situated,the lever is connected to the connecting beam by means of a rod and can be moved with respect to the support t
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: April 18, 2000
    Assignee: Kuhn S.A.
    Inventors: Jerome Aron, Marc Helfer
  • Patent number: 5743075
    Abstract: A haymaking machine which includes a frame that has two windrowing rotors driven in rotation about substantially vertical axes, the frame having a linkage beam which connects the axle of the first rotor to that of the second rotor, the beam being articulated to the axle of the first rotor. The linkage beam includes at least one transverse joint shaft and the first rotor includes a toothed ring which meshes with a first gear wheel which is formed as one piece with a drive shaft and with a second gear wheel which is formed as one piece with a transmission shaft which extends to the second rotor and which includes a third gear wheel which meshes with a toothed ring of this rotor. The transmission shaft is housed in the linkage beam and is pivotable with the latter about the axle of the first rotor, the transmission shaft including at least one universal joint at the level of the joint shaft the linkage beam.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: April 28, 1998
    Assignee: Kuhn, S.A.
    Inventors: Jerome Aron, Marc Helfer