Container with conical-shaped ramp and method of removing particles from the same

摘要

Particles are packed in a container. The container is either cylindrical-shaped or box-shaped. The container has a container inner wall and an inner bottom. A ramp is disposed on the container inner bottom. The ramp has a ramp base that is narrower than the container inner bottom. A conical-shaped inclined ramp surface extends upward from the ramp base at a substantially constant ramp surface angle with respect to horizontal and towards the container inner wall. The inclined ramp surface defines a ramp upper rim that is substantially proximate to the container inner wall. The particles have an angle of repose that is less than the ramp surface angle. The particles flow down the inclined ramp surface towards the ramp base. The particles are removed from the container using a vacuum feed nozzle that is disposed proximate to the particles in the container.