Pipe joint
US6698802B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 6, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Dec 6, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/006
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe joint formed by screwing a pin portion having a tapered male thread formed on the outer peripheral surface of the end of a pipe into a box portion having a tapered female thread formed on the inner peripheral surface of the end of a pipe or a short pipe so as to threadingly engage with the tapered male thread, the pipe joint having the following shape:clearance C between thread stab flanks:0.5-1.0 mmthread stab flank angle &thgr;: 15-60 degreesthread crest surfaces andparallel to the pipe axisthread root surfaces:radius R of stab flank corner 1.0-1.25 mmportions of male thread:In addition, the taper of the incomplete thread portion of the pin portion is preferably 0.96-0.90 times the nominal taper of the complete thread portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.