Patents by Inventor Stephan Carl

Stephan Carl 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).

  • Sliding vane rotary pump
    Patent number: 12607187
    Abstract: The invention relates to a rotary vane pump (1) for conveying a fluid to be conveyed, with a housing (2), with a rotor receiving chamber (3) and a lubricant chamber (14). An eccentrically arranged rotor (4) is provided in a rotor receiving chamber (3) in such a way that at least one conveying chamber (11) is produced, the volume of which varies cyclically during rotation of the rotor (4). Furthermore, the rotary vane pump (1) has an intake channel (12) for feeding the fluid to be conveyed into the conveying chamber (11) and a discharge channel (13) for discharging the fluid to be conveyed out of the conveying chamber (11) in the direction of the lubricant chamber (14), wherein a valve device (21) is provided between the discharge channel (13) and the lubricant chamber (14) in order to prevent a backflow of fluid, in particular of lubricant and/or of fluid to be conveyed, from the lubricant chamber (14) into the conveying chamber (11).
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: April 21, 2026
    Assignee: Busch Produktions GmbH
    Inventors: Stephan Carl, Sebastian Schwenzer, Ronald Sachs
  • Improved Sliding Vane Rotary Pump
    Publication number: 20260009385
    Abstract: The invention relates to a rotary vane pump (1) for conveying a fluid to be conveyed, with a housing (2), with a rotor receiving chamber (3) and a lubricant chamber (14). An eccentrically arranged rotor (4) is provided in a rotor receiving chamber (3) in such a way that at least one conveying chamber (11) is produced, the volume of which varies cyclically during rotation of the rotor (4). Furthermore, the rotary vane pump (1) has an intake channel (12) for feeding the fluid to be conveyed into the conveying chamber (11) and a discharge channel (13) for discharging the fluid to be conveyed out of the conveying chamber (11) in the direction of the lubricant chamber (14), wherein a valve device (21) is provided between the discharge channel (13) and the lubricant chamber (14) in order to prevent a backflow of fluid, in particular of lubricant and/or of fluid to be conveyed, from the lubricant chamber (14) into the conveying chamber (11).
    Type: Application
    Filed: October 10, 2022
    Publication date: January 8, 2026
    Inventors: Stephan CARL, Sebastian SCHWENZER, Ronald SACHS
  • Vacuum pump
    Patent number: D1006062
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: November 28, 2023
    Inventors: Sebastian Schwenzer, Stephan Carl, Andreas Paul