Triple-weld fitting
US10627033B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jun 10, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/98
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method for constructing a double walled tube assembly, comprising: welding a first axial end of a first tube to a first sub-fitting of a first fitting, sliding a second tube over the first sub-fitting and the first tube, sliding a second sub-fitting of the first fitting over the first sub-fitting such that the first and second sub-fittings are co-axial, welding a first axial end of the second tube to the second sub-fitting, and welding the second sub-fitting to the first sub-fitting. An assembly includes a first fitting that includes a first sub-fitting and a second sub-fitting, a first tube having a first axial end that is welded to the first sub-fitting, and a second tube having a first axial end that is welded to the second sub-fitting, where the first tube is nested within the second tube, where the first sub-fitting is welded to the second sub-fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.