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Active walls

  • US 6,722,365 B2
  • Filed: 01/07/2003
  • Issued: 04/20/2004
  • Est. Priority Date: 12/08/1999
  • Status: Expired due to Fees
First Claim
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1. A powder distribution device for transporting and mixing of powder with a gas comprisinga distribution member body forming a connection between a source of fine powder and a discharge opening, whereby the distribution member body comprises a porous body having a first inlet portion and an outlet portion for a stream of a first gas mixed with the fine powder, the porous body being surrounded by a second gas, which when creating a positive pressure gradient between outer and inner regions of said distribution member body the surrounding second gas will leak through the porous body of the distribution member body, thereby preventing powder particles from sticking to the inside of the distribution member.

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