US 11,897,198 B2
Resin extractor for additive manufacturing
Michael Murillo, Menlo Park, CA (US); Gregory W. Dachs, II, San Mateo, CA (US); and Bob E. Feller, San Mateo, CA (US)
Assigned to Carbon, Inc., Redwood City, CA (US)
Filed by Carbon, Inc., Redwood City, CA (US)
Filed on Mar. 1, 2022, as Appl. No. 17/683,784.
Application 17/371,833 is a division of application No. 17/048,349, granted, now 11,084,216, issued on Aug. 10, 2021, previously published as PCT/US2019/028539, filed on Apr. 22, 2019.
Application 17/683,784 is a continuation of application No. 17/371,833, filed on Jul. 9, 2021, granted, now 11,478,988.
Claims priority of provisional application 62/772,858, filed on Nov. 29, 2018.
Claims priority of provisional application 62/661,421, filed on Apr. 23, 2018.
Prior Publication US 2022/0184892 A1, Jun. 16, 2022
Int. Cl. B29C 64/35 (2017.01); B29C 64/124 (2017.01); B29C 64/245 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/20 (2020.01)
CPC B29C 64/35 (2017.08) [B29C 64/124 (2017.08); B29C 64/245 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/20 (2020.01)] 22 Claims
OG exemplary drawing
 
1. A method of separating excess resin from at least one object, comprising:
(a) stereolithographically producing at least one object on at least one carrier platform, said at least one carrier platform having a planar build surface to which at least one object is connected, said at least one object carrying excess resin on a surface thereof; then
(b) mounting said at least one carrier platform to a rotor;
(c) centrifugally separating excess resin from said at least one object by spinning said rotor about a vertical axis of rotation with said at least one carrier platform connected thereto while said at least one object remains connected to each said carrier platform; and then
(d) removing said at least one carrier platform from said rotor with said at least one object thereon, with excess resin separated therefrom,
the method further comprising spraying a solvent on said excess resin to reduce the viscosity thereof during said centrifugally separating step,
wherein said centrifugally separating step is carried out with said at least one carrier platform mounted to said rotor with said planar build surface facing away from said axis of rotation.