Patent ID: 6764391
Filing Date: 2004-07-20
Classification: A61C,B24C

Abstract:
Apparatus for pneumatically delivering particulate material to a dental tool, the apparatus comprising:(a) a pressure vessel having a hollow interior, a floor and an outlet in the floor communicating with a flow of pressurized gas; (b) a receptacle container containing the particulate material to be delivered, the container being located in the vessel at a distance above the floor and having a container outlet located above the vessel outlet and in communication therewith via the hollow interior of the pressure vessel, the container outlet being dimensioned to supply a small amount of the particulate material to exit therefrom to the vessel outlet; (c) means for supplying pressurised gas into the vessel and for circulating the pressurized gas about the container so that the material in the container is at substantially the same pressure as in the remainder of the vessel; and (d) power means to vibrate the vessel to cause the small amount of particulate material to exit from the container outlet for free fall through the hollow interior of the pressure vessel to the pressure vessel outlet and be pneumatically transported via a pipeline at substantially uniform pressure to the dental tool.