Poppet valve flow seat
US4872481A · kind A · utility
28Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1986 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jun 12, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7936
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The edges of the port exits of a poppet valve seat member are each provided with a 30 degree chamfer and a counter-bore immediately upstream of the chamfer to significantly reduce exit flow losses. The depth/width of the counter-bore is between about 2:1 and about 3:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.