Bonding structure of valve seat and method of making the same
US6536397B2 · kind B2 · utility
15Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2002 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Feb 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49306
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bonding structure of a valve seat has a port opening of a metallic head and an annular metallic valve seat insert. The valve seat insert includes an outer reduced diameter surface on its outer circumference. The material of the valve seat insert is harder than that of the head. The head plastically deforms upon pressing the valve seat insert toward the head. The deformed metal occupies any gap around the outer reduced diameter surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.