Patent · US Active

Apparatus for avoiding deposits on optical components in the laser sintering process

US9162392B2 · kind B2 · utility

8Cited by

5References

11Claims

0Family size

Assignee

Evonik Industries AG · DE

Inventors

Maik Grebe · Bochum, DE
Sigrid Hessel-Geldmann · Haltern am See, DE
Wolfgang Diekmann · Waltrop, DE

Key dates

Filing date	Oct 23, 2012
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Nov 21, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24612
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention provides a process and an apparatus for the layer-by-layer production of three-dimensional objects, wherein material vapors formed during processing in the construction chamber are prevented from deposition on apparatus components by exposing the gases to deposition surfaces where the materials condense and deposit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.