Patents by Inventor Bengt A. Johnnerfelt

Bengt A. Johnnerfelt 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).

  • Method for remotely monitoring failed surge arrester disconnectors and energy harvester for autonomous power supply of monitoring devices installed on surge arresters
    Patent number: 11715975
    Abstract: A method of remotely monitoring a status of a surge arrester disconnector includes providing a long-range wireless mesh communication system including a plurality of disconnectors organized in a plurality of clusters. Each cluster includes a plurality of disconnectors that are physically located within a same cluster area. At least one of the disconnectors in each cluster is coupled to a communication device of a predetermined communication range. The method includes transmitting, from a first cluster, a status signal indicative of a status of a first disconnector in the first cluster to a second cluster located within the predetermined communication range, and consecutively transmitting the status signal from the second cluster to a third cluster within the predetermined communication range, until reaching an end cluster.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: August 1, 2023
    Assignees: Tyco Electronics Raychem GmbH, Tyco Electronics UK Ltd.
    Inventors: Jonathan Roberts, Bengt A. Johnnerfelt, Ladislaus Kehl
  • Method For Remotely Monitoring Failed Surge Arrester Disconnectors and Energy Harvester For Autonomous Power Supply Of Monitoring Devices Installed On Surge Arresters
    Publication number: 20200303950
    Abstract: A method of remotely monitoring a status of a surge arrester disconnector includes providing a long-range wireless mesh communication system including a plurality of disconnectors organized in a plurality of clusters. Each cluster includes a plurality of disconnectors that are physically located within a same cluster area. At least one of the disconnectors in each cluster is coupled to a communication device of a predetermined communication range. The method includes transmitting, from a first cluster, a status signal indicative of a status of a first disconnector in the first cluster to a second cluster located within the predetermined communication range, and consecutively transmitting the status signal from the second cluster to a third cluster within the predetermined communication range, until reaching an end cluster.
    Type: Application
    Filed: June 12, 2020
    Publication date: September 24, 2020
    Applicants: Tyco Electronics UK Ltd., Tyco Electronics Raychem GmbH
    Inventors: Jonathan Roberts, Bengt A. Johnnerfelt, Ladislaus Kehl
  • Surge arrester
    Patent number: 4962440
    Abstract: A surge arrester comprises a plurality of cylindrical arrester elements (11) of metal oxide varistor material which are arranged, with confronting end surfaces, between two end electrodes (13) in an elongated protective housing (10) which is resistant to deformation under the operating conditions for the surge arrester. The housing is of cross-linked HD polyethylene and is shrunk onto the envelope surfaces of the arrester elements and onto envelope surfaces on heat-absorbing metallic bodies (12) arranged between the arrester elements.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: October 9, 1990
    Assignee: Asea Brown Boveri AB
    Inventors: Bengt Johnnerfelt, Bengt Thors