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Manufacturing apparatus and method

  • US 8,753,105 B2
  • Filed: 07/20/2009
  • Issued: 06/17/2014
  • Est. Priority Date: 07/18/2008
  • Status: Active Grant
First Claim
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1. An apparatus for manufacturing a three-dimensional object by layerwise consolidation of powder comprising,a lowerable build platform for supporting the object during manufacture, anda sealable chamber for controlling the atmosphere surrounding the object, and aplurality of gas transport devices, including a pump and/or one or more gas valveswherein the pump and/or one or more valves are housed in a chamber in which a controlled atmosphere can be maintaineda gas circuit for supplying a stream of gas to the build chamber, the gas circuit comprising the plurality of gas transport devices.

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