公开(公告)号：US12252619B2

公开(公告)日：2025-03-18

申请号：US16981115

申请日：2019-03-30

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Daniel Rau ,  Jana Herzberger ,  Timothy Long ,  Christopher Williams

IPC: B33Y70/00 ,  C08G69/40 ,  C09D11/101 ,  C09D11/102 ,  C09D11/38 ,  B29C64/124 ,  B29K79/00 ,  B33Y10/00

Abstract: In various aspects, a polymer resin is provided for vat or ultraviolet-assisted direct ink writing (UV-DIW) photopolymerization. The resin can include a polyamic acid salt formed from the addition of a photocrosslinkable amine to a polyamic acid. The resin can include a photoinitiator suitable for initiating crosslinking of the photocrosslinkable amine when exposed to a light source of a suitable wavelength and intensity. The polyamic acid can be formed, for instance, by the addition of a diamine to a suitable dianhydride. Methods of additive manufacturing using the resins are also provided.

公开(公告)号：US20230398745A1

公开(公告)日：2023-12-14

申请号：US18298116

申请日：2023-04-10

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： Tadeusz Kosmal ,  Kieran Beaumont ,  Eric Link ,  Dalton Phillips ,  Conner Pulling ,  James Lowe ,  Christopher Williams ,  Joseph Kubalak

IPC: B29C64/379 ,  B29C64/209 ,  B25J9/16

CPC classification number: B29C64/379 ,  B29C64/209 ,  B25J9/1687 ,  B25J9/1664 ,  B33Y10/00

Abstract: An autonomous fabrication method and system are described. A multi-axis robotic arm having at least one end effector is provided, where the at least one end effector comprises an additive manufacturing (AM) toolhead and a component gripping mechanism. The multi-axis robotic arm is directed to fabricate a first portion of an object in a workspace using the AM toolhead, select a prefabricated part using the component gripping mechanism, place the prefabricated part in a predetermined location of the object, and fabricate a second portion of the object in the workspace using the AM toolhead. The object may be one of an unmanned aerial vehicle and an unmanned ground-based vehicle.