Patents by Inventor Timothy P. Crampton

Timothy P. Crampton 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).

  • Unique computer power system with backup power
    Patent number: 5578876
    Abstract: A computer power system comprises an AC-to-DC power supply for providing DC power to the computer during the presence of AC line power and a backup power supply for providing DC power from batteries directly to the DC operated components of the computer system, completely bypassing the AC to DC power supply, when AC line voltage is absent or low.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: November 26, 1996
    Assignee: Applied Research & Technology, Inc.
    Inventor: Timothy P. Crampton
  • Unique computer power system with backup power
    Patent number: 5237258
    Abstract: A computer power system comprises an AC-to-DC power supply for providing DC power to the computer during the presence of AC line power and a backup power supply for providing DC power from batteries directly to the DC operated components of the computer system, completely bypassing the AC to DC power supply, when AC line voltage is absent or low.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: August 17, 1993
    Assignee: Applied Research and Technology, Inc.
    Inventor: Timothy P. Crampton
  • Unique computer power system with backup power
    Patent number: 4885521
    Abstract: A computer power system comprises an AC-to-DC power supply for providing DC power to the computer during the presence of AC line power and a backup power supply for providing DC power from batteries directly to the DC operated components of the computer system, completely bypassing the AC to DC power supply, when AC line voltage is absent or low.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: December 5, 1989
    Assignee: Applied Research & Technology, Inc.
    Inventor: Timothy P. Crampton
  • Power-supply/battery back-up power supply/battery charger combination
    Patent number: 4760322
    Abstract: A. Power supply comprising an AC to DC power supply and a DC to DC power supply and a DC battery charging circuit within a single device, which device provides continuous DC power to a load regardless of the presence or absence of the AC power source.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: July 26, 1988
    Assignee: Applied Research & Technology, Inc.
    Inventor: Timothy P. Crampton
  • Power-supply/battery back-up power supply/battery charger combination
    Patent number: 4672293
    Abstract: Power supply comprising an AC to DC power supply and a DC to DC power supply and a DC battery charging circuit within a single device, which device provides continuous DC power to a load regardless of the presence or absence of the AC power source.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: June 9, 1987
    Inventor: Timothy P. Crampton