Building cylinders for machines for the layer-by-layer production of three-dimensional objects
US11305356B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | May 12, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Building cylinders, for use in machines for the layer-by-layer production of 3D objects by sintering or melting powdered material by a high-energy beam, and having a main body and a piston part movable on an inner side of the main body along a cylindrical axis, are disclosed. The piston part has a base element for the growth of a 3D object, and a powder seal bearing against the inner side of the main body for sealing the powdered material. The piston part has a seal carrier on which the powder seal is mounted, and an insulator, e.g., a circumferential insulation ring, mounted on the seal carrier. The base element is mounted on the insulator and is arranged at a distance from the seal carrier and from the powder seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.