| abstract |
The filling device includes a first chamber portion having a first cross-sectional area and a second chamber portion having a second cross-sectional area smaller than the first cross-sectional area. The second chamber portion is in communication with the first chamber portion. The first chamber portion has an inlet for receiving material into the filling device and the second chamber portion has an outlet for discharging the material from the filling device. The first plunger is sized to pass through the first chamber portion but not through the second chamber portion. The second plunger is sized to pass through an interior bore of the first plunger and through the second chamber portion. In use, the first plunger discharges material in the first chamber portion through the second chamber portion toward the outlet, and the second plunger discharges material in the second chamber portion from the outlet. |