Patent ID: 8640918

Claim:
A method for transferring material using a refillable material transfer system comprising: providing a vessel having a first end with a material inlet and exit manifold and a second end, a force transfer device disposed within the vessel, the force transfer device including, (a) a conical upper portion; (b) a circumferential intermediate portion, and a conical lower portion; the first end of the vessel conforming to a shape of the lower portion of the force transfer device and the second end of the vessel conforming to the shape of the upper portion of the force transfer device, where the conical lower portion is of a different shape from the conical upper portion; (1) filling the vessel with material using only the material inlet and exit manifold at the first end, thereby pushing the force transfer device against the second end of the vessel; and (2) driving the force transfer device across the vessel from the second end to the first end to pressurize the material through the material exit manifold, wherein the force transfer device is driven by a drive shaft connected to the force transfer device at the conical upper portion; and repeating (1) and (2) until a desired amount of material has been transferred.