Method of and apparatus for production of three-dimensional objects by stereolithography with reduced curl
US5104592A · kind A · utility
157Cited by
3References
95Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1989 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Apr 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0037
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved sterolithography system for generating a three-dimensional object from object defining information, the information defining the object being structurally specified to reduce curl, stress and distortion in the ultimately formed object is described. A stereolithographic distortion known as curl is reduced by the system, and several techniques to eliminate or reduce curl are utilized by the system, including dashed line, bent line, secondary structure, rivets, and multi-pass techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.