Patents by Inventor Kevin R. Baker

Kevin R. Baker 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: 6739444
    Abstract: A coin sensor utilizes time-multiplexing of LC oscillators having natural frequencies F1A, F1B, F2, and F3 to produce magnetic fields in three sets of windings. As a coin passes through the coin sensor, the LC oscillators are separately enabled in a sequence to produce a frequency profile for each set of windings. A first winding produces a frequency profile for the facial area of a coin, a second winding produces a frequency profile for a cross-sectional area of a the coin, and a third winding produces a frequency profile for further distinguishing the relative size of a coin. A microcontroller identifies signature points from the frequency profiles and compares the signature points with stored signatures for a multitude of coins and/or tokens.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: May 25, 2004
    Inventors: Kevin R. Baker, Kent Erickson
  • Publication number: 20020144877
    Abstract: An coin sensor utilizes time-multiplexing of LC oscillators having natural frequencies F1A, F1B, F2, and F3 to produce magnetic fields in three sets of windings. As a coin passes through the coin sensor, the LC oscillators are separately enabled in a sequence to produce a frequency profile for each set of windings. A first winding produces a frequency profile for the facial area of a coin, a second winding produces a frequency profile for a cross-sectional area of a the coin, and a third winding produces a frequency profile for further distinguishing the relative size of a coin. A microcontroller identifies signatures points from the frequency profiles and compares the signature points with stored signatures for a multitude of coins and/or tokens.
    Type: Application
    Filed: February 14, 2002
    Publication date: October 10, 2002
    Inventors: Kevin R. Baker, Kent Erickson
  • Patent number: 5739081
    Abstract: Water dispersible granules suitable for agricultural application are prepared by first preparing absorbent water dispersible granules and then loading biologically active substances into the preformed absorbent granules.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: April 14, 1998
    Assignee: ICI Australia Operations Proprietary Ltd.
    Inventors: John M. Lloyd, Kevin R. Baker
  • Patent number: 5241360
    Abstract: A laser distance measuring device includes a semiconductor source, such as a laser diode, that produces a laser beam, preferably in the visible range. A driver selectively drives the semiconductor source at a minimum of two different driving frequencies. A laser beam receiver has a detector that produces an output signal which varies with the intensity of the received laser beam, an amplifier that amplifies the output signal of the detector, and counter means for controllably counting the number of cycles in a clock signal. A beam director selectively directs the laser beam toward an object and receives the reflected laser beam from the object, and directs the laser beam toward the receiver without traveling to the object. A microprocessor controls the driver, the counter, and the beam director.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: August 31, 1993
    Assignee: Cubic Automatic Reveneu Collection Group
    Inventors: Claiborne M. Key, Jeffrey S. Brumfield, Kevin R. Baker