Poppet valve and method of manufacturing it
US5799683A · kind A · utility
11Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0491
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A poppet valve in an internal combustion engine comprises a valve head and a valve stem. On a valve face of the valve head, a hardened layer of dendrites in which crystals are directed from the inside to the surface is formed, thereby increasing wear resistance of the valve face without cladding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.