Process of support removal for fused deposition modeling
US5503785A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Jun 2, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y40/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Processes and apparatus are disclosed for producing three-dimensional objects having overhanging portions freely suspended in space without any material of the object in direct, supporting engagement therewith in the final geometry of the object. A support structure is formed by depositing material which will be under the ultimately suspended portions of the object to be formed, during a process in which material is built up in layers to form the object as well as the underlying support structure. A readily removable support structure is formed along an interface with the underside of the suspended portion of the object structure. A weak, removable or breakable joint is formed along that interface by the use of an interface material which forms a weak or dissolvable bond with the material of the object. The release material may be deposited as a separation layer, or as a thin coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.