Patents by Inventor James F. Morrissey

James F. Morrissey 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).

  • Humidity sensing apparatus and method
    Patent number: 5614671
    Abstract: The present invention is a humidity sensor which can be used in a radiosonde. The humidity sensor includes a heat sink attached to the radiosonde, a Peltier cooler attached to the heat sink, a carbon element with a thermistor attached therein or thereon, and a control means. The resistance of the carbon element is adjusted to a predetermined level to maintain a relative humidity of about 33, in particular. The control means monitors this resistance and adjusts the Peltier cooler accordingly. The thermistor responding to the temperature of the carbon element outputs a resistance indicative of the temperature on the sensor surface.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: March 25, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: James F. Morrissey
  • Humidity sensing apparatus and method
    Patent number: 5365784
    Abstract: The present invention is a humidity sensor which can be used in a radiosonde. The humidity sensor includes a heat sink attached to the radiosonde, a Peltier cooler attached to the heat sink, a carbon element with a thermistor attached therein or thereon, and a control means. The resistance of the carbon element is adjusted to a predetermined level to maintain a relative humidity of about 33, in particular. The control means monitors this resistance and adjusts the Peltier cooler accordingly. The thermistor responding to the temperature of the carbon element outputs a resistance indicative of the temperature on the sensor surface.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: November 22, 1994
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: James F. Morrissey