Patents Assigned to Ida F. Thrope
  • Respiration monitor
    Patent number: 4989612
    Abstract: A monitor for monitoring motion wherein a light source is positioned a distance from a light conductor and the distance between the light source and the light conductor is varied in response to motion. The light received by the light conductor is used to provide output indications indicative of the monitored motion.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: February 5, 1991
    Assignees: William H. Castor, Ida F. Thrope
    Inventor: Don C. Fore