Patents by Inventor Stefan Palmgren

Stefan Palmgren 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).

  • Cooling system for an electrical machine
    Patent number: 8581456
    Abstract: A cooling system for an electrical machine includes a substantially closed housing, a first heat exchanger arranged inside of the housing, a second heat exchanger arranged outside of the housing, a conduit assembly for transferring a heat exchange medium in a closed circuit between the first and the second heat exchangers, a first air circulating means configured to circulate air inside of the housing over the first heat exchanger, and a second air circulating means configured to circulate air outside of the housing over the second heat exchanger, wherein the conduit assembly includes a pump for actively circulating the heat exchange medium between the first and the second heat exchangers.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 12, 2013
    Assignee: ABB AB
    Inventors: Johan Osterberg, Stefan Palmgren, Robert Larsson
  • Cooling System For An Electrical Machine
    Publication number: 20120235522
    Abstract: A cooling system for an electrical machine includes a substantially closed housing, a first heat exchanger arranged inside of the housing, a second heat exchanger arranged outside of the housing, a conduit assembly for transferring a heat exchange medium in a closed circuit between the first and the second heat exchangers, a first air circulating means configured to circulate air inside of the housing over the first heat exchanger, and a second air circulating means configured to circulate air outside of the housing over the second heat exchanger, wherein the conduit assembly includes a pump for actively circulating the heat exchange medium between the first and the second heat exchangers.
    Type: Application
    Filed: March 30, 2012
    Publication date: September 20, 2012
    Inventors: Johan Osterberg, Stefan Palmgren, Robert Larsson