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Three-dimensional parts having interconnected hollow patterns, and method for generating and printing thereof

  • US 9,399,320 B2
  • Filed: 03/08/2013
  • Issued: 07/26/2016
  • Est. Priority Date: 03/08/2013
  • Status: Active Grant
First Claim
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1. A three-dimensional part printed using an additive manufacturing technique, the three-dimensional part comprising:

  • a outer wall having an outer surface and an inner surface wherein the outer wall is printed in a layer by layer manner in a build plane;

    a plurality of sets of printed cell layers wherein each of the plurality of sets of printed cell layers are printed such that printed cell layer is attached to the inner surface of the outer wall, each layer defining an array of hollow cells with wall segments; and

    a plurality of sets of printed transition layers, each transition layer being printed between and attached to adjacent printed cell layers and attached to the inner surface of the outer wall, wherein the sets of printed transition layers each comprise sloped walls that diverge from a first portion of the wall segments and that converge towards a second portion of the wall segments to interconnect the hollow cells of adjacent printed cell layers in a manner that allows a fluid to flow through a plurality of the hollow cells, and wherein the sloped walls of adjacent printed transition layers have printing orientations that are rotated from each other about an axis substantially perpendicular to the build plane wherein the plurality of sets of printed cell layers, the plurality of sets of printed transition layers and the outer wall form a monolithic construction.

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