Patents by Inventor Philip J. Rittenhouse

Philip J. Rittenhouse 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).

  • Temperature measuring device
    Patent number: 4907896
    Abstract: There is disclosed a maximum reading, temperature measuring device, such as a clinical thermometer, composed of a bulb containing an expandable liquid, such as mercury, an elongated tube with a central bore into which the liquid expands when heated, and a flow control member positioned intermediate the tube and bulb and sealed to each. The flow control member is a short length of tubing having a central bore that is sufficiently small in diameter to form a constriction that inhibits reverse flow of the liquid.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: March 13, 1990
    Assignee: Corning Incorporated
    Inventors: Peter J. Martuscello, Philip J. Rittenhouse