Patents by Inventor Petr J. Kral

Petr J. Kral 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).

  • Combined electrical measurement device
    Patent number: 8841900
    Abstract: A combined measurement device for measuring current and/or voltage of an electrical conductor, comprising a supporting body, a current sensor housed inside the supporting body, and a voltage sensor located at least partially inside the supporting body. A shielding is positioned around the current sensor. The current sensor and the voltage sensor are mutually arranged so as the shielding shields at least partially both the current sensor and the voltage sensor against external electric field disturbances.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: September 23, 2014
    Assignee: ABB Technology AG
    Inventors: Radek Javora, Petr J. Kral
  • COMBINED ELECTRICAL MEASUREMENT DEVICE
    Publication number: 20110089933
    Abstract: A combined measurement device for measuring current and/or voltage of an electrical conductor, comprising a supporting body, a current sensor housed inside the supporting body, and a voltage sensor located at least partially inside the supporting body. A shielding is positioned around the current sensor. The current sensor and the voltage sensor are mutually arranged so as the shielding shields at least partially both the current sensor and the voltage sensor against external electric field disturbances.
    Type: Application
    Filed: June 12, 2009
    Publication date: April 21, 2011
    Applicant: ABB Technology AG
    Inventors: Radek Javora, Petr J. Kral