Bulge formed cooling channels with a variable lead helix on a hollow body of revolution
US5221045A · kind A · utility
22Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49371
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of constructing a nozzle having cooling channels comprises a shell and a liner which are formed into a body of revolution having an axis of revolution. Helical welds are formed to hold the liner and shell to each other with a channel position being defined between each pair of helical welds. Pressurized fluid which may be a gas or a liquid, is introduced between the weld pairs to outwardly bulge the material of at least one of the liner and shell to define the channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.