Diamond film coating for mating parts
US5909879A · kind A · utility
15Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1993 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Mar 9, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3496
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
At least one of the mating wear surfaces of a sliding mechanical seal is coated with diamond. The coating includes an underlayer of high resistance to wear and an overlayer with a reduced resistance to wear as compared to that of the underlayer. The reduced wear resistance of the overlayer prevents damage by the diamond to the opposing mating surface during the wear-in period of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.