Patents by Inventor Ernest E. J. Huggins

Ernest E. J. Huggins 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).

  • Location of contact faults on electrically conductive cables
    Patent number: 4278931
    Abstract: The invention relates to the location of contact faults on electrically conductive cables such as telephone pairs. Contact fault location apparatus has a pair of resistors, a constant current source, and means such as a differential amplifier and meter for sensing the current flowing in the resistors. A pair of lines to be tested is looped at one end, the apparatus is connected across the other end and the current flowing in the resistors is measured. The ratio of the current is indicative of the distance to the fault.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: July 14, 1981
    Assignee: The Post Office
    Inventor: Ernest E. J. Huggins
  • Battery charging apparatus
    Patent number: 4139812
    Abstract: An arrangement for charging a rechargeable battery which has a plurality of sections. The battery can be selectively connected by a switch either to a source of charging current or to supply power to a load. When the battery is connected to the charging current source the sections are connected in parallel and when it is connected to a load the sections are connected in series.
    Type: Grant
    Filed: July 19, 1977
    Date of Patent: February 13, 1979
    Assignee: The Post Office
    Inventor: Ernest E. J. Huggins