Carbon, Inc.

Soren Rademacher

Alexander Ermoshkin

David Shirvanyants

Derek Alan Faust

Edward T Samulski

Nikita Ermoshkin

Robert K Pinschmidt, Jr

Zachary Polizzi

Stephen Paul Land

Henry Quarles Bibb, Iii

The present disclosure describes an apparatus for additively manufacturing a three-dimensional object. The apparatus includes a radiation source, a carrier on which the three-dimensional object is made, an applicator assembly configured to apply a polymerizable liquid, and a frame, with the applicator assembly and the radiation source connected to the frame. A first drive assembly interconnects the applicator assembly and the frame and a second drive assembly interconnects the carrier and the frame. The frame defines a build region between the applicator assembly and the carrier. The applicator assembly includes a polymerizable liquid supply chamber, an application roller, and a metering roller. The applicator assembly may optionally include a post-metering roller. An apparatus comprising a first and a second applicator assembly and a smaller scale version of the apparatus are also described.

Apparatuses for additively manufacturing three-dimensional objects

The present disclosure describes an additive manufacturing apparatus. The apparatus includes a chamber () having a planar circumferential top edge portion () defining a chamber orifice (); a stage () movably positioned in the chamber (), the two together configured to receive a viscous resin; a dispenser () facing the stage () and operatively associated therewith, the dispenser () configured to apply a planar coating of viscous resin; a primary drive () operatively associated with the dispenser () and chamber (), the primary drive () configured to move the dispenser () across the chamber orifice (); a light engine () facing the stage () and operatively associated therewith, the light engine () configured to expose a coating of resin on the stage () planar top surface () to patterned light; and a stage drive () operatively associated with the stage () and configured to retract the stage () into the chamber (), following exposure of a coating of resin. Methods of making a three-dimensional object by additive manufacturing are also described.

Additive manufacturing method and apparatus for the production of dental crowns and other objects

The present disclosure describes an apparatus () for additively manufacturing a three-dimensional object. The apparatus () includes a radiation source (), a carrier () on which the three-dimensional object is made, an applicator assembly () configured to apply a polymerizable liquid, and a frame (), with the applicator assembly and the radiation source connected to the frame. A first drive assembly () interconnects the applicator assembly and the frame and a second drive assembly () interconnects the carrier and the frame. The frame defines a build region () between the applicator assembly and the carrier. The applicator assembly includes a polymerizable liquid supply chamber, an application roller (), and a metering roller (). The applicator assembly may optionally include a post-metering roller (). An apparatus comprising a first and a second applicator assembly and a smaller scale version of the apparatus are also described.

A method of making a three-dimensional object is carried out by: (a) providing an apparatus comprising a radiation source, a carrier on which the three dimensional object is made, and a movable belt positioned therebetween, the belt having a first surface and an opposite second surface, with the belt comprised of an optically transparent material, and with the belt permeable to a polymerization inhibitor; (b) applying a polymerizable liquid to the first surface of the belt, and contacting the second surface of the belt to the polymerization inhibitor, (c) contacting a portion of the belt first surface having the polymerizable liquid thereon to the carrier or the three dimensional object so that the belt adheres thereto with the polymerizable liquid positioned therebetween; (d) irradiating the polymerizable liquid with actinic radiation through the belt from the radiation source to polymerize the polymerizable liquid positioned therebetween; then (e) optionally separating the belt from the carrier or the three dimensional object; and then (f) repeating steps (b) through (e) until the three dimensional object is completed. Apparatus for carrying out the method is also described.

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Chapel Hill, NC, United States of America

Soren Rademacher