Patents by Inventor Stefan Olaru

Stefan Olaru 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).

  • Reduced rotor assembly diameter vane pump
    Patent number: 7997882
    Abstract: A vane pump with a reduced rotor diameter is provided. The reduced rotor diameter allows a reduction in the overall size of the pump which allows the pump to be used in circumstances wherein sufficient packaging volume does not exist for conventional vane pumps. Further, the reduced rotor diameter permits operation of the pump at a higher speed, in comparison to conventional vane pumps, for a given working fluid and pump rate. The rotor includes an integrally formed drive shaft and a cylindrical rotor head. Both fixed displacement and variable displacement embodiments are shown.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: August 16, 2011
    Assignee: Magna Powertrain Inc.
    Inventors: David R. Shulver, Stefan Olaru, Matthew Williamson
  • Reduced Rotor Assembly Diameter Vane Pump
    Publication number: 20090053088
    Abstract: A vane pump with a reduced rotor diameter is provided. The reduced rotor diameter allows a reduction in the overall size of the pump which allows the pump to be used in circumstances wherein sufficient packaging volume does not exist for conventional vane pumps. Further, the reduced rotor diameter permits operation of the pump at a higher speed, in comparison to conventional vane pumps, for a given working fluid and pump rate. The rotor includes an integrally formed drive shaft and a cylindrical rotor head. Both fixed displacment and variable displacement embodiments are shown.
    Type: Application
    Filed: March 1, 2007
    Publication date: February 26, 2009
    Inventors: David R. Shulver, Stefan Olaru, Matthew Williamson