Build cylinder arrangements for machines for layered production of three-dimensional objects having a fiber metal seal
US11428319B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Mar 3, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Build cylinder arrangements for machines for the layered production of three-dimensional objects by sintering or melting with a high-energy beam, of powdered material, are disclosed and have a base member and a piston that can be moved on an inner side of the base member along a central axis of the base member. The piston has at its upper side a substrate for building a three-dimensional object, and on the piston is a seal in abutment with the inner side of the base member for sealing the powdered material. The seal is a circumferential fiber metal seal of metal fibers that are pressed together and the pressed metal fibers are arranged with resilient compression stress between the piston and the inner side of the base member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.