Method of applying lubrication to legs of a hairpin tube
US9078505B2 · kind B2 · utility
2Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Feb 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/263
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and system for manufacturing a hairpin tube. The method includes cutting a coil of tube to provide a plurality of lengths of tubes, and bending each length of tube to form a plurality of hairpin tubes. A lubricant is then atomized with an injector nozzle, and injected into at least one open end of each hairpin tube. After lubricating the hairpin tubes, the legs of each hairpin tube are expanded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.