Patents by Inventor Patrick William Clarke

Patrick William Clarke 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).

  • Regulated uninterruptible power supply
    Patent number: 4038559
    Abstract: An uninterruptible power supply derives regulated power from either a primary power source or a reserve power source. A power flow control unit derives the output power as needed from either one or both power sources. Its operating characteristics are selected so that complicated transfer and disconnect circuitry is eliminated.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: July 26, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Ping Sun Chun, Patrick William Clarke, Kenneth William Gardner
  • Converter regulation by controlled conduction overlap
    Patent number: 3938024
    Abstract: The regulation control for a DC to DC converter controls the duration of overlapping conduction periods of oppositely phased switching devices to achieve output signal regulation. Current limiting means is included in the signal path of the switching devices to prevent transient overcurrents during the period of overlap.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: February 10, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Patrick William Clarke