Patent ID: 9174392
Filing Date: 2015-11-03
Classification: B28B,B29C,B33Y,Y10T

Abstract:
1. A system for production of three-dimensional models comprising: a workpiece platform for layer-wiser application of a particulate material; a coating device for repeated application of layers of the particulate material to the workpiece platform; and a filling device for filling the coating device with the particulate material, wherein the filling device includes a container having two opposing walls and an opening in the direction of the workpiece platform for feeding to the coating device, the opening not being sealed off from the environment around the filling device, the filling device includes a means for exposing the particulate material to vacuum and excess pressure for controlling the flow of the particulate material from the filling device, wherein the means for exposing the particulate material includes at least one connector to each of the opposing walls for i) providing vacuum from the opposing walls for forming a bridge of the particulate material between the two opposing walls and ii) providing excess pressure for destroying the bridge; wherein the two opposing walls are flat and tapered inwardly, and the intersection of the opposing walls with the horizontal plane are parallel lines; a length of the container is a multiple of a width of the container so that the opening of the container is long and narrow for filling the coating device across a length of the coating device.