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US 12,611,818 B2Granted
Mechanism to control the density gradient in three-dimensionally printed material
AssigneeARC Ventures B.V.
InventorJames E. Charmley
Life of this patent
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Abstract
Systems, methods and devices to create a wall system having a cross sectional density gradient obtained by structural 3D printing are disclosed. A mechanism is described that accepts a cementitious material and combines it with a gaseous bubble mixture and then partially mixes the various materials in such a controlled manner as to create a density gradient. The gaseous mixture may be primarily composed of carbon dioxide.
Claims22
A mixing nozzle assembly comprising:
- a deposition material inlet sized and shaped to receive a pressurized flow of deposition material;
- at least one deposition material chute having a first end and an opposing second end, each of said at least one deposition material chutes being in fluid communication with said deposition material inlet at said first end to receive at least some of said pressurized flow of deposition material;
- a gaseous bubble mix inlet;
- and
- a mixing chamber, said mixing chamber in fluid communication with each of said at least one deposition material chutes at said second end, and said mixing chamber in fluid communication with said gaseous bubble mix inlet and receiving an expanded pressurized bubble-deposition mixture that at least partially combines with said pressurized flow of deposition material received from said at least one deposition material chute in said mixing chamber, and said mixing chamber having at least one obstructing element disposed therein.
2 more elements
Dependencies are inferred from the claim text.