Bellows pipe construction
US5158115A · kind A · utility
11Cited by
17References
4Claims
0Family size
Inventor
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C37/124
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bellows pipe construction and method for manufacturing are disclosed wherein helically wound coils of longitudinally corrugated strip are joined with an interlocking seam. Thereafter, the interlocking seam is deformed to position the edges of the strip in substantial parallelism with the axis of the pipe. The resulting pipe can be extended or shortened for installation and will further adjust and accommodate ground movement without substantial loss of strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.