Threaded connection of a duct
US11174969B2 · kind B2 · utility
0Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Feb 5, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L43/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pin member of threaded connection includes a body and a male thread positioned on the body. The male thread includes a male thread principal portion, a male thread transition portion with a cross-sectional area that is smaller than a cross-sectional area of the male thread principal portion, and a male thread protrusion with a cross-sectional area that is larger than the cross-sectional area of the male thread transition portion with the male thread transition portion positioned between the male thread principal portion and the male thread protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.