Joint structure for metallic pipes
US9803781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Oct 24, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
One of a first metallic pipe containing a first metal as a main component and a second metallic pipe containing a second metal as a main component includes an expanded-diameter connecting part which is formed at an end part of the one metallic pipe. An inner diameter of the end part is greater than an inner diameter of an adjacent part that is adjacent to the end part. An intermetallic compound layer of the first and second metal is present at an interface of the first and second metal located between a brazing filler metal and the one or the other of the metallic pipes. A thickness of the intermetallic compound layer is configured such that the thickness of an end portion on the side of a base end is smaller than the thickness of an end portion on the side of an open end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.