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Additive manufacturing print-heads for exotic material applications

United States Patent

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11,084,211
August 10, 2021
View the Complete Patent at the US Patent & Trademark Office
Additive Manufacturing Printhead for Exotic Materials
Described herein is an additive manufacturing apparatus that is well-suited for constructing piezoelectric sensors. The additive manufacturing apparatus includes an extrusion nozzle formed of a conductive material such as aluminum. The extrusion nozzle has a channel by way of which printing material exits the extrusion nozzle, wherein a build plate is configured to receive the printing material responsive to the printing material exiting the extrusion nozzle. An arc suppressor formed of a semiconductor is coupled to the extrusion nozzle and is configured to dissipate excess charge that would otherwise exist on the extrusion nozzle when a relatively high bias voltage is applied to the extrusion nozzle. Thus, the arc suppressor mitigates arcing between the extrusion nozzle and the build plate. Arc suppressing gas is also optionally introduced into a printing region, thereby further mitigating arcing between the extrusion nozzle and the build plate.
16/ 109,234
August 22, 2018
1/1
B29C 64/209 (20170101)B29C 71/00 (20060101)H01L 41/333 (20130101)B29C 64/364 (20170101)B33Y 10/00 (20150101)B33Y 30/00 (20150101)B33Y 70/00 (20200101)B33Y 80/00 (20150101)H01L 41/193 (20060101)
STATEMENT OF GOVERNMENTAL INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The U.S. Government has certain rights in the invention.