Patents by Inventor Ralph Crenshaw

Ralph Crenshaw 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 and apparatus for attaching power line communications to customer premises
    Publication number: 20050248441
    Abstract: A method and apparatus for modifying a three-phase power distribution network in a building in order to provide data communication by using a Power Line Carrier (PLC) signal to an approximate electrical central location point of the power distribution system remote from the data entry point of the building. A passive coupler device is attached to a centrally located service panel. The passive coupler receives the Power Line Carrier (PLC) signal from the remote entry point in the building and conditions the signal for entry at the service panel onto each phase of the three phase power distribution network.
    Type: Application
    Filed: July 19, 2005
    Publication date: November 10, 2005
    Inventors: Ralph Crenshaw, David Grimes, L. Larson
  • Method and apparatus for attaching power line communications to customer premises
    Publication number: 20050046550
    Abstract: A method and apparatus for modifying a power distribution network in a building in order to provide data communication by using a Power Line Carrier (PLC) signal to an approximate electrical central location point of a power distribution system remote from the data entry point of the building. A passive coupler device is attached to a centrally located service panel. The passive coupler receives the Power Line Carrier (PLC) signal from the remote entry point in the building and conditions the signal for entry at the service panel onto each phase of the power distribution network.
    Type: Application
    Filed: July 27, 2004
    Publication date: March 3, 2005
    Inventors: Ralph Crenshaw, David Grimes, L. Larson, Andrew Pozsgay