Method for nesting multiple concentric pipes
US6003560A · kind A · utility
0Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jun 6, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L39/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The front end of the outer pipe 21 of the nested pipes 2 is sealed off, an auxiliary pipe 3 is joined so as to be detachable onto the tail end of the outer pipe 21, and a thrusting device 4 is mounted onto the auxiliary pipe 3. The nested pipes 2 are filled with a filler fluid 28, then as the thrusting device 4 generates pressure on the filler fluid 28, the nested pipes 2 are inserted into the existing pipe 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.