Fabrication of 3D objects via electrostatic powder deposition
US10632670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2019 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Apr 29, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating an object, comprising depositing a first layer of first object material on a support substrate electrode; applying a conductive agent material onto the first layer; depositing a first layer of charged powder on an intermediate substrate; conveying the first layer of charged powder on the intermediate substrate proximate to the first layer of first object material; and applying a transferring electric field to cause transfer of the first layer of charged powder from the intermediate substrate onto the first layer on the support substrate electrode, to form a first powder layer on the first layer on the support substrate electrode. Multiple powder layers may be deposited on the first layer. The method may be further comprised of fusing the powder layer(s) to form a first fused layer on the support substrate electrode. A related object fabrication apparatus is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.