Method of making an ultra light engine valve
US5619796A · kind A · utility
16Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49314
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An ultra light popper valve for an internal combustion engine. The valve is formed by cold forming a blank into an elongated cup having an extremely thin wall and a flared open end onto which a cap is welded, the bosom end of the cup which defines the tip end of the valve having a wall section which is substantially of the thickness of the original blank. In accordance with one aspect of the invention, a keeper groove is formed adjacent the tip end as part of the cold forming process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.