Engine valve
US4182299A · kind A · utility
12Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1978 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Jun 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49314
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An engine valve has a valve body, a valve head, an annular metallic valve seat layer fusibly bonded to the valve head that has a relatively fine crystalline structure, and a thinner region of interstitial bond between the valve head and the valve seat layer than heretofore known.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.