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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10357919 B1

PDFFull Text
Date of Patent:
Jul. 23, 2019

Filed:

Oct. 03, 2016

Method and apparatus for photo-curing with self-lubricating substratum for the formation of three-dimensional objects

Applicant:

Nexa3d Inc., Ventura, CA (US);

Inventors:

Luciano Tringali, Rome, IT;

Andrea Denaro, Rome, IT;

Gianni Zitelli, Ciampino, IT;

Assignee:

NEXA3D INC., Ventura, CA (US);

Attorney:

Ascenda Law Group, PC

Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
B29C 33/58 (2006.01); B29C 33/60 (2006.01); B29C 33/62 (2006.01); B29C 33/64 (2006.01); B29C 33/68 (2006.01); B29C 64/124 (2017.01); B29C 37/00 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B29C 64/135 (2017.01); B29C 64/40 (2017.01); B29C 64/277 (2017.01); G02F 1/1335 (2006.01); B29C 64/223 (2017.01); B29C 64/255 (2017.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29C 64/124 (2017.08); B29C 37/0067 (2013.01); B29C 37/0075 (2013.01); B29C 64/135 (2017.08); B29C 64/223 (2017.08); B29C 64/255 (2017.08); B29C 64/277 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); G02F 1/133514 (2013.01); G02F 1/133603 (2013.01); G02F 1/133606 (2013.01); G02F 1/133617 (2013.01); B29K 2105/0058 (2013.01); G02F 2001/133607 (2013.01);
Abstract

Three-dimensional objects are formed by exposing a photo-curing liquid polymer to a radiation. The three-dimensional objects form by growth, due to the progressive curing of the photo-curing liquid polymer, in a space between a sheet transparent to the radiation and a supporting plate, that is, a portion already formed of the objects. During the growth process, the supporting plate progressively moves away from the transparent sheet. On the side of said transparent sheet facing towards the photo-curing liquid polymer, a membrane is arranged. The membrane is transparent to the radiation, and is covered by a layer of liquid lubricant that is released gradually by the membrane.

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