Threaded component for seizure-resistant tubular threaded joint
US6933264B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B33/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a threaded component for a seizure-resistant tubular threaded joint wherein a lubricating substance is deposited in a thin film on at least the surface of the threads of the threading, said surface being treated to adsorb said lubricating substance. The lubricating substance consists of a homogeneous mixture of a) a thickening agent; b) a set of extreme-pressure additives physically and chemically compatible with the thickening agent and comprising at least an extreme-pressure additive with chemical action called chemical EP additive and capable of being used at Hertz pressures not less than 1000 Mpa's; c) an oil. The proportions of the constituents of the lubricating substance are selected such that said lubricating substance has a consistency capable of ensuring a self-induced and film-forming lubricating process. The invention also concerns a method for producing the thin film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.