Method and apparatus for stereolithographic curl balancing
US5238639A · kind A · utility
65Cited by
3References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49013
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for eliminating or substantially reducing curling effects in stereolithographically formed objects. Synergistic stimulation is applied to a curable material to form a three dimensional object through the build up of successive layers. Curling between successive layers is eliminated or substantially reduced by curing a balancing layer in relation to a balanced layer such that reverse curl of the balanced layer caused by the balancing layer offsets or negates normal curl of the balanced layer caused by the balancing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.