Re-entrant angle closure on superplastically formed structure
US5055143A · kind A · utility
14Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24661
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A superplastically formed and diffusion bonded structure formed with two or more sheets and upset forging the material at the perimeter to provide the expulsive material between the inner most sheets so as to close the entrance angle formed between the expanded sheets at the line where the surfaces of the split forming fixture engage and the method of producing this structure. The upset forged material insures the structural integrity of the outside perimeter structure after removal of the flange which is normally present as a result of the holding fixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.