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:
Nov. 04, 2025
Filed:
Jan. 14, 2025
3d Systems, Inc., Rock Hill, SC (US);
Andrew John Stewart Edwards, North Somerset, GB;
Frank A. Mckiel, Jr., Colorado Springs, CO (US);
3D SYSTEMS, INC., Rock Hill, SC (US);
Abstract
In the context of additively manufacturing a solid object using extrusion deposition, closed-loop control of flow rate is achieved using a distance measuring tool to scan a surface of a layer that has been deposited using a first flow rate, comparing data from the scan to a desired target value and using a control algorithm to calculate a corrected second flow rate to be applied when depositing a subsequent layer. In some embodiments, the control algorithm is a proportional-integral control algorithm. In some embodiments, a solid object shape may result in some layers having multiple isolated regions and separate closed-loop control instances may be applied to the separate regions.