Threaded parts for aircraft
US6287396A · kind A · utility
0Cited by
5References
2Claims
0Family size
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Inventors
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Threaded parts for aircraft made of heat-resistant steel which will never seize even after subjected to large temperature fluctuations and vibrations for a long time. Thus they can be tightened sufficiently and also loosened for maintenance and inspection. The threaded parts are made of heat-resistant steel and having its surface subjected to carburizing so as to satisfy the following equations: EQU 0.ltoreq.X.ltoreq.100, EQU Y.gtoreq.-10X+600, EQU Y.ltoreq.-6X+1000 where X is the depth (.mu.m) from the surface of the threaded part and and Y is the Vickers hardness (HV).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.