Screw thread protection
US4692988A · kind A · utility
33Cited by
8References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Aug 19, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of protecting mating screw threads at least under tightening torques is described in which a dry lubricant such as molybdenum disulphide is applied to one screw thread, and a liquid lubricant is applied to the other screw thread. The screw threads are then tightened to the required torque value. When completely mated the leakage path will not be masked as a result of volatilization of any of the components of either lubricant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.