Fitting with complementary fitting materials
US9194514B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2006 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 21, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L13/146
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fitting assembly for maintaining a leak free seal connection with an associated fluid conduit during and after exposure to extreme heat is provided. The fitting assembly includes a coupling body including an inside surface defining a bore for receiving the associated fluid conduit. The coupling body is made of a first corrosion resistant material having a first coefficient of thermal expansion. The at least one ring is made of a complementary second corrosion resistant material having a second larger coefficient of thermal expansion such that the second material will expand at a greater rate that the first material during heating to a first temperature generally exceeding annealing temperatures of both the first material and the second material. The second material contracts at a greater rate that the first material during subsequent cooling to a second temperature below the annealing temperatures thereby restoring compressive and tensile stresses in the associated fluid conduit and the fitting assembly for ensuring that the fitting assembly maintains a leak free seal connection with the associated fluid conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.