Method for fabricating a support for a bubble cap on the end of its riser tube
US4539164A · kind A · utility
1Cited by
8References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/231263
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spider is formed at the upper end of a vapor riser tube by shearing and upsetting or crimping a portion of the upper end to form a support for a bolt which mounts the bubble cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.