Patents by Inventor Thomas J. Mullins

Thomas J. Mullins 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).

  • Powder blower device
    Patent number: 4184258
    Abstract: A device for blowing powder onto teeth, the device consisting of a handpiece in the form of a housing connected to a compressed air source and having a discharge nozzle member which can be inserted in a patient's mouth and can be directed towards the patient's teeth. The housing has a powder reservoir with a bottom supply duct. An apertured shuttle bar is reciprocably slidably mounted beneath said duct and has a metering hole registrable with said supply duct and then, by longitudinally moving the bar, with a discharge conduit arranged to receive compressed air from the source so as to discharge a metered amount of powder in said hole into the nozzle member for delivery to the patient's teeth.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: January 22, 1980
    Assignee: The United States of America as represented by the Department of Health, Education and Welfare
    Inventors: James E. Barrington, David L. Williams, Charles J. Hitchcock, Thomas J. Mullins