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Multi-extruder

  • US 8,512,024 B2
  • Filed: 01/20/2011
  • Issued: 08/20/2013
  • Est. Priority Date: 01/20/2011
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a first motor having a first axis extending in a first direction;

    a second motor having a second axis extending in a second direction opposite the first direction, the second axis parallel to and overlapping with the first axis;

    a first gear rigidly coupled to the first axis, the first gear having a first concave, toothed portion around a first perimeter thereof;

    a second gear rigidly coupled to the second axis at a first position axially offset from the first gear, the second gear having a second concave, toothed portion around a second perimeter thereof;

    a first bearing rotatably coupled to the first axis at a second position axially aligned with the second gear of the second axis, thereby forming a channel between the first bearing and the second gear to receive and move a first filament by rotation of the second motor; and

    a second bearing rotatably coupled to the second axis at a third position axially aligned with the first gear of the first axis, thereby forming a second channel between the second bearing and the first gear to receive and move a second filament by rotation of the first motor.

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