Patents by Inventor Tobias Groepper

Tobias Groepper 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).

  • Multiple clutch device having two pressure equalization chambers
    Patent number: 8511450
    Abstract: The present invention relates to a multiple clutch device having a first clutch which is assigned a first actuating piston with a first pressure chamber and a first pressure equalization chamber, and having a second clutch which is assigned a second actuating piston with a second pressure chamber and a second pressure equalization chamber, a first crossflow channel being provided for setting the hydraulic fluid column in the first pressure equalization chamber and a second crossflow channel being provided for setting the hydraulic fluid column in the second pressure equalization chamber. According to the invention, the first and second crossflow channels are arranged in such a way that both the oil which is discharged via the first crossflow channel and the oil which is discharged via the second crossflow channel can be fed to the first and second clutches.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: August 20, 2013
    Assignee: Borgwarner Inc.
    Inventors: Eckart Gold, Marcus Hertel, Tobias Groepper
  • MULTIPLE CLUTCH DEVICE HAVING TWO PRESSURE EQUALIZATION CHAMBERS
    Publication number: 20110073434
    Abstract: The present invention relates to a multiple clutch device having a first clutch which is assigned a first actuating piston with a first pressure chamber and a first pressure equalization chamber, and having a second clutch which is assigned a second actuating piston with a second pressure chamber and a second pressure equalization chamber, a first crossflow channel WO being provided for setting the hydraulic fluid column in the first pressure equalization chamber and a second crossflow channel being provided for setting the hydraulic fluid column in the second pressure equalization chamber. According to the invention, the first and second crossflow channels are arranged in such a way that both the oil which is discharged via the first crossflow channel and the oil which is discharged via the second crossflow channel can be fed to the first and second clutches.
    Type: Application
    Filed: June 1, 2009
    Publication date: March 31, 2011
    Applicant: BORGWARNER INC.
    Inventors: Eckart Gold, Marcus Hertel, Tobias Groepper