Patents by Inventor Petter RYBÄCK

Petter RYBÄCK 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).

  • Hydrodynamic retarder device, method for its use together with a vehicle
    Patent number: 10066685
    Abstract: A hydrodynamic retarder device for installation in a driveline to a vehicle, wherein the retarder device comprises: a blade-equipped stator which, together with a blade-equipped rotor, forms a blade system with a workspace for receipt of an aqueous working medium, and a retarder circuit connected to the workspace to control the inflow of a working medium to the workspace, wherein the retarder circuit is installed to be connected to the vehicle's ordinary cooling water circuit. The retarder circuit comprises valve elements to shut off the flow of working medium to the workspace, and a negative pressure generator is connected in the retarder circuit, which is installed to reduce the pressure in the workspace to or below the vapor pressure for the working medium, so that the workspace is thus evacuated of the liquid working medium. The invention also pertains to a method and a vehicle.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 4, 2018
    Assignee: Scania CV AB
    Inventors: Mikael Sannelius, Johnny Färm, Petter Rybäck, Elias Bartos
  • HYDRODYNAMIC RETARDER DEVICE, METHOD FOR ITS USE AND VEHICLE
    Publication number: 20160325722
    Abstract: A hydrodynamic retarder device for installation in a power-train in a vehicle, wherein the retarder device comprises: a shovel-equipped stator which, together with a shovel-equipped rotor, forms a shovel system with a workspace for receipt of an aqueous working medium, and a retarder circuit connected to the workspace, to control the inflow of a working medium to the workspace, wherein the retarder circuit is installed to be connected to the vehicle's ordinary cooling water circuit. The retarder circuit comprises valve elements to shut off the flow of working medium to the workspace, and a negative pressure generator is connected in the retarder circuit, which negative pressure generator is installed to reduce the pressure in the workspace to or below the vapor pressure for the working medium, so that the workspace is thus evacuated of the liquid working medium.
    Type: Application
    Filed: February 13, 2015
    Publication date: November 10, 2016
    Inventors: Mikael SANNELIUS, Johnny FÄRM, Petter RYBÄCK
  • HYDRODYNAMIC RETARDER DEVICE, METHOD FOR ITS USE TOGETHER WITH A VEHICLE
    Publication number: 20160200302
    Abstract: A hydrodynamic retarder device for installation in a driveline to a vehicle, wherein the retarder device comprises: a blade-equipped stator which, together with a blade-equipped rotor, forms a blade system with a workspace for receipt of an aqueous working medium, and a retarder circuit connected to the workspace to control the inflow of a working medium to the workspace, wherein the retarder circuit is installed to be connected to the vehicle's ordinary cooling water circuit. The retarder circuit comprises valve elements to shut off the flow of working medium to the workspace, and a negative pressure generator is connected in the retarder circuit, which is installed to reduce the pressure in the workspace to or below the vapor pressure for the working medium, so that the workspace is thus evacuated of the liquid working medium. The invention also pertains to a method and a vehicle.
    Type: Application
    Filed: September 10, 2014
    Publication date: July 14, 2016
    Inventors: Mikael SANNELIUS, Johnny FÄRM, Petter RYBÄCK, Elias BARTOS