Patents by Inventor Lee M. Richey

Lee M. Richey 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).

  • Method and apparatus for controlling and stabilizing oscillators
    Patent number: 6175280
    Abstract: A system for frequency stabilization and control is provided. The circuit according to the invention consists of three major subsystems; namely, a display and control module, an integrator module, and a voltage controlled oscillator. The electronic system disclosed provides a highly flexible method of frequency stabilization and control. The system is programmable and may be used in a wide variety of applications, offering a variety of advantages over conventional systems such as PLLs.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: January 16, 2001
    Assignee: Radio Adventures Corporation
    Inventors: Michael W. Lloyd, Lee M. Richey
  • Level sensor
    Patent number: 4747451
    Abstract: A system for controlling production in an oil well comprises a first level sensor mounted upon the outer surface of the tubing near the lower end of the tubing and a second level sensor mounted upon the outer surface of the tubing above the first level sensor. The first level sensor is tuned to a first electrical signal frequency. The second level sensor is tuned to a second electrical signal frequency. A control device at spaced intervals transmits electrical signals of the first and second frequencies down the oil well and senses the liquid level by detecting impedance.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: May 31, 1988
    Assignee: Oil Well Automation, Inc.
    Inventors: Harold P. Adams, Jr., David R. Hill, Lee M. Richey, Andrew B. Maitland, William E. Banton, David C. Taylor
  • Level sensor
    Patent number: RE33690
    Abstract: A system for controlling production in an oil well comprises a first level sensor mounted upon the outer surface of the tubing near the lower end of the tubing and a second level sensor mounted upon the outer surface of the tubing above the first level sensor. The first level sensor is tuned to a first electrical signal frequency. The second level sensor is tuned to a second electrical signal frequency. A control device at spaced intervals transmits electrical signals of the first and second frequencies down the oil well and senses the liquid level by detecting impedance.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: September 17, 1991
    Assignee: Oil Well Automation, Inc.
    Inventors: Harold P. Adams, Jr., Andrew B. Maitland, David R. Hill, William E. Banton, Lee M. Richey, David C. Taylor