Carbon, Inc.

W Ryan Powell

Courtney F Converse

Allison Light

Bob E Feller

Edwin James Sabathia, Jr

Ananda Rose Day

David Eliot Scheinman

Mohamed Imran Jameel

Sherwood Forlee

Scott Heines

Mark O Kaufman

Mateusz Marek Wojtaszek

Yongqiang Li

R Griffin Price

A method of cleaning residual resin from an additively manufactured object, includes: (a) enclosing an additively manufactured object in an inner chamber of a centrifugal separator, the additively manufactured object including a light polymerized resin with a surface coating of viscous, unpolymerized, residual resin; (b) flooding the chamber with a volatile organic solvent vapor without contacting liquid organic solvent to the object, the vapor present in an amount sufficient to reduce the viscosity of the residual resin; and (c) spinning the additively manufactured object in the chamber to centrifugally separate at least a first portion of the residual resin from the object.

Vapor spin cleaning of additively manufactured parts

A helmet liner includes: (a) an open lattice body portion comprised of a polymer, the body portion having opposite face portions and a circumferential side portion; (b) a helmet contact surface portion formed on one of the face portions; and (c) a skin contact portion formed on the other of the face portions, the skin contact portion configured with the lattice body portion so air can circulate through both the body portion and the skin contact portion.

Moisture controlling lattice liners for helmets and other wearable articles

A method of making a three-dimensional object, including the steps of: (a) providing a carrier platform; (b) producing the three-dimensional object adhered to the carrier platform; (c) immersing the object in a wash liquid with the object remaining adhered to the carrier platform; (d) agitating the object in the wash liquid and/or the wash liquid with the object immersed therein to at least partially remove residual resin from the object; (e) separating the object from the wash liquid, with the object remaining adhered to the carrier platform; (f) agitating the object at least partially remove residual wash liquid; and (g) repeating steps (c) through (f) at least once to remove additional polymerizable resin, steps (c) through (f) are carried out in the same vessel, the immersing step (c) includes filling the vessel with the wash liquid, and the separating step (e) includes draining the wash liquid from the vessel.

Methods and apparatus for washing objects produced by stereolithography

A method of producing multiple batches of objects by stereolithography, includes the steps of: (a) dispensing an initial or subsequent batch of dual cure resin into a stereolithography apparatus, the resin including a light polymerizable component and a heat polymerizable component; (b) producing an intermediate object by light polymerization of the resin in the apparatus, wherein the intermediate object retains excess resin on a surface thereof; then (c) separating excess resin from the intermediate object; (d) blending the excess resin with additional dual cure resin to produce a subsequent batch of dual cure resin; (e) repeating steps (a) through (c), and optionally repeating step (d), to produce additional object(s); and (f) baking the objects, together or separately, to produce multiple batches of objects.

Systems and methods for resin recovery in additive manufacturing

A method of making an object by additive manufacturing includes: (a) providing an additive manufacturing apparatus including a light source; (b) providing a carrier platform having a substantially planar object adhesion surface, the adhesion surface having a plurality of elongate wash channels formed therein; (c) producing the object on the carrier platform adhesion surface with the additive manufacturing apparatus from a light polymerizable resin, the object having at least one internal cavity formed therein; then (d) washing the object on the carrier platform with a wash liquid under conditions in which the wash liquid reaches the at least one internal cavity through the wash channels; then (e) optionally, at least partially drying the object on the carrier platform by separating the same from the wash liquid, and then agitating the object on the carrier platform to drain excess wash liquid from the object; (f) optionally, further curing the object.

Rapid wash carrier platform for additive manufacturing of dental models

Method of making a three-dimensional object, comprising the steps of: (a) providing a carrier platform on which the three-dimensional object can be formed; (b) producing the three-dimensional object, (c) immersing the object in a wash liquid with the object remaining adhered to the carrier platform; (d) agitating (i) the object in said wash liquid, (ii) the wash liquid with the object immersed therein, or (iii) both the object and the wash liquid, to at least partially remove residual resin from the surface of the object; (e) separating the object from the wash liquid, with the object remaining adhered to the carrier platform, (f) agitating the object to at least partially remove residual wash liquid from the surface thereof; and (g) repeating steps (c) through (f) to remove additional polymerizable resin from the surface thereof, wherein steps (c) through (f) are carried out in the same vessel.

A method of producing multiple batches of objects by stereolithography, includes the steps of: (a) dispensing an initial or subsequent batch of dual cure resin into a stereolithography apparatus (), the resin including a light polymerizable component and a heat polymerizable component; (b) producing an intermediate object by light polymerization of the resin in the apparatus (), wherein the intermediate object retains excess resin on a surface thereof; then (c) separating excess resin from the intermediate object (); (d) blending the excess resin with additional dual cure resin to produce a subsequent batch of dual cure resin (); (e) repeating steps (a) through (c), and optionally repeating step (d), to produce additional object(s); and (f) baking the objects, together or separately, to produce multiple batches of objects ().

Growing community of inventors

Sunnyvale, CA, United States of America

W Ryan Powell