Patent ID: 6651843
Filing Date: 2003-11-25
Classification: B05B,B22F,C21C,C23C

Abstract:
A feedstock feeder for supplying feedstock to a system operating at a level of pressure, comprising:a pressure vessel having a higher pressure than the level of pressure; a mechanical feeder portion which meters the flow of feedstock to the system, the mechanical feeder portion located within the pressure vessel; a drive mechanism coupled to a dynamically moving portion for driving the dynamically moving portion; the dynamically moving portion coupled to the mechanical feeder portion operating to move the mechanical feeder portion, the dynamically moving portion located within the pressure vessel; and at least one dynamic seal positioned to permit the movement of the dynamically moving portion yet operating to prevent the feedstock from exiting the mechanical feeder portion, wherein all such dynamic seals are located entirely within the higher pressure of the pressure vessel.