Method of manufacturing a threaded joint for oil well pipes
US6877202B2 · kind B2 · utility
9Cited by
5References
16Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Sep 17, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4978
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a threaded joint for oil well pipe having a pin part with a male thread, a box part with a female thread, metal seal parts provided on the pin part and the box part, respectively, and torque shoulder parts provided at the tip of the pin part and at the portion of the box part coming in contact with the tip of the pin part, respectively, comprising the step of providing a design procedure for determining the dimensions of each part, whereby an highly strong threaded joint showing an excellent leak resistance to internal and external pressures can be designed and manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.