Patents by Inventor Peter Österback

Peter Österback 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).

  • Thermal overload protection
    Patent number: 7555366
    Abstract: A thermal overload protection for an electrical device, particularly an electric motor (M), measures a load current supplied to the electrical device (M), and calculates the thermal load on the electrical device on the basis of the measured load current, and shuts off (S2) a current supply (L1, L2, L3) when the thermal load reaches a given threshold level. The protection comprises a processor system employing X-bit, preferably X=32, fixed-point arithmetic, wherein the thermal load is calculated by a mathematic equation programmed into the microprocessor system structured such that a result or a provisional result never exceeds the X-bit value.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: June 30, 2009
    Assignee: ABB Oy
    Inventors: Janne Kuivalainen, Peter Österback
  • Thermal overload protection
    Patent number: 7538508
    Abstract: A thermal overload protection for an electrical device, particularly an electric motor (M), measures a load current supplied to the electrical device (M), and calculates the thermal load on the electrical device on the basis of the measured load current, and shuts off (S2) a current supply (L1, L2, L3) when the thermal load reaches a given threshold level. The protection comprises a processor system employing X-bit, preferably X=32, fixed-point arithmetic, wherein the thermal load is calculated by a mathematic equation programmed into the microprocessor system structured such that a result or a provisional result never exceeds the X-bit value.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: May 26, 2009
    Assignee: ABB Oy
    Inventors: Janne Kuivalainen, Peter Österback