Patents by Inventor Everett E. Chapman

Everett E. Chapman 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).

  • Electronic coordinate transformation using multiplier circuits
    Patent number: 3975625
    Abstract: An electronic coordinate transformation network using multiplier circuits for mechanizing and solving the equations relating the vectors of one coordinate system to those of another coordinate system.
    Type: Grant
    Filed: January 16, 1975
    Date of Patent: August 17, 1976
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Barry N. Levitt, Thomas H. Crocker, Everett E. Chapman
  • Analog-to-pulse integrating converter
    Patent number: 3970943
    Abstract: An analog-to-pulse integrating converter uses dual slope integration to achieve DC voltage to pulse rate conversion. An input signal is integrated, the integrator output is level detected and the integrator reset, at the same time there is issued an output pulse. The output pulse rate is proportional to the level of the DC input signal.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: July 20, 1976
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Everett E. Chapman, Thomas H. Crocker, Barry N. Levitt