Shell forming system
US4960351A · kind A · utility
63Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1986 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Oct 24, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2009/088
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Hollow shells of high uniformity are formed by emitting liquid through an outer nozzle and gas through an inner nozzle, to form a hollow extrusion, by flowing the gas at a velocity between about 1.3 and 10 times the liquid velocity. The natural breakup rate of the extrusion can be increased to decrease shell size by applying periodic perturbations to one of the materials prior to exiting the nozzles, to a nozzle, or to the extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.