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Device for feeding fluids

  • US 7,665,636 B2
  • Filed: 05/16/2003
  • Issued: 02/23/2010
  • Est. Priority Date: 05/20/2002
  • Status: Expired due to Fees
First Claim
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1. An apparatus for dispensing particulate matter from a supply bin to a coater for rapid prototyping, comprising a plough that has a width essentially equal to that of the supply bin and laterally moves at least partially in and out of the supply bin and pushes the particulate matter from the supply bin, through an aperture in the supply bin, to the coater and which when the plough is retracted, pushes the particulate matter out of the supply bin across its width and closes the aperture in the supply bin, whereby there is an adequate quantity of the particulate matter above the plough, further wherein the aperture is dimensioned such that when the plough is at a protracted position outwards of the supply bin the particulate matter is hindered from flowing out due to a seal formed by an angle of repose of the particulate matter at the aperture.

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