Method of forming spherical shells
US4748837A · kind A · utility
19Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing a spherical shell from a blank utilizing dies, comprising the steps of forming and clamping a flange portion of the blank by pressing with the dies and applying fluid pressure to an elastic diaphragm or flat metal sheet to cause the diaphragm or sheet to bulge the blank so as to form a curved shell surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.