Patents by Inventor Thomas E. Dann

Thomas E. Dann 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).

  • Apparatus for feeding powder
    Patent number: 4632009
    Abstract: Explosive powder is fed to a receptacle within a barricade by means of a tube which is open at only one end. A first motor is provided for pivoting the tube between an upright refill position and a dispensing position wherein the longitudinal axis of the tube is slightly below horizontal. A second motor is coupled to the tube for movement therewith and for rotating or oscillating the tube about its longitudinal axis to cause powder to be dispensed from the tube.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: December 30, 1986
    Assignee: Day & Zimmerman Inc.
    Inventor: Thomas E. Dann