Expandable metal-pipe bonded body and manufacturing method thereof
US6405761B1 · kind B1 · utility
99Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Oct 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/11
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides a metal pipe bonded body formed from a plurality of metal pipes. Each metal-pipe is formed with an elongated, pre-formed portion at each end, and a central portion, each elongated, preformed portion having a constant inside diameter greater than an inside diameter of the central portion of each metal pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.