Patents by Inventor Arthur G. Birchenough

Arthur G. Birchenough 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).

  • Patent number: 7116568
    Abstract: A Series Connected Buck-Boost Regulator (SCBBR) that switches only a fraction of the input power, resulting in relatively high efficiencies. The SCBBR has multiple operating modes including a buck, a boost, and a current limiting mode, so that an output voltage of the SCBBR ranges from below the source voltage to above the source voltage.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: October 3, 2006
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur G. Birchenough
  • Patent number: 7042199
    Abstract: A Series Connected Buck-Boost Regulator (SCBBR) that switches only a fraction of the input power, resulting in relatively high efficiencies. The SCBBR has multiple operating modes including a buck, a boost, and a current limiting mode, so that an output voltage of the SCBBR ranges from below the source voltage to above the source voltage.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: May 9, 2006
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur G. Birchenough
  • Patent number: 4033316
    Abstract: Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is disclosed. A high-voltage, direct-current (dc) source is connected in series with a secondary winding of a high voltage, step-up transformer or coil and a spark gap such as a spark plug for example. The high-voltage source may be on continuously or may be turned on and off by a control circuit such as a solid state switch which is, in turn, responsive to a timing device such as a set of ignition contact points or a magnetic pulse generator operating in synchronism with a spark ignition engine. The timing device also provides signals to a current switching circuit which interrupts current flow through a primary winding of the high-voltage coil at the prescribed time that a spark is desired at the spark gap.The control circuit may, if desired, include both a switch and a multivibrator if the timer is of the pulse-generating magnetic type.
    Type: Grant
    Filed: June 3, 1975
    Date of Patent: July 5, 1977
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur G. Birchenough
  • Patent number: 4001602
    Abstract: Advantage is taken of the current-exponential voltage characteristic of a diode over a certain range whereby the incremental impedance across the diode is inversely proportional to the current through the diode. Accordingly, a divider circuit employs a bias current through the diode proportional to the desired denominator and applies an incremental current to the diode proportional to the numerator. As a result, the incremental voltage across the diode is proportional to the quotient.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: January 4, 1977
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur G. Birchenough