Patents by Inventor Richard F. Vanderpool

Richard F. Vanderpool 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 the indirect measurement of blood pressure
    Patent number: 3930494
    Abstract: A method and apparatus for automatically detecting the blood pressure of a person by auscultation in which a standard blood pressure cuff is connected to a pressure transducer for providing a pressure signal and a microphone is used for providing an electrical signal from the Korotkoff sounds detected. The Korotkoff sound electrical signal is amplified and passed through a bandpass filter which has a flat response between approximately 50 and 160 Hz and a sharp cutoff below 50 Hz. The resultant signal is then summed with the pressure signal to provide an output which indicates the pressures at which the five phases associated with the Korotkoff sounds occur.
    Type: Grant
    Filed: September 20, 1971
    Date of Patent: January 6, 1976
    Assignee: General Electric Company
    Inventors: Alan H. Maurer, John J. Swana, Richard F. Vanderpool