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.:
Date of Patent:
Sep. 01, 2015
Filed:
Apr. 29, 2013
Yong Chen, Burbank, CA (US);
Chi Zhou, Riverside, CA (US);
UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US);
Abstract
A three-dimensional object may be produced in cascaded layers from a liquid resin that solidifies upon exposure to light. A translation stage may be positioned relative to a vat that is suitable for solidifying the highest un-solidified layer of the three-dimensional object directly beneath any existing, solidified layers of the three-dimensional object. A mask image projection system may project a two-dimensional image of the highest un-solidified layer through a transparent bottom of the vat and into the liquid resin. This may cause at least a portion of the liquid resin to solidify in the shape of the two-dimensional image and to adhere to the bottom of a surface beneath the solidified layer. A shearing force may be applied between the bottom surface of the solidified layer and the surface beneath that is great enough to detach the solidified layer from the surface beneath.