Patents by Inventor Kenneth Arnold Pickar

Kenneth Arnold Pickar 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).

  • Solid state disconnect device
    Patent number: 4048647
    Abstract: A solid state disconnect or isolating device for disconnecting a subscriber on his premises, replaces a relay with associated circuitry and items. It can be coupled with a surge protection device to provide disconnect signalling, plus loop testing if desired. The device comprises a normally "on" junction field effect transistor which acts as a pinch resistor.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: September 13, 1977
    Assignee: Northern Telecom Limited
    Inventor: Kenneth Arnold Pickar