Control valve
US4666126A · kind A · utility
19Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1986 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Jan 8, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K39/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve in which a surface of a valve seat closer to a valve body is formed so as to be flat. A valve head corresponding to an annularly formed fluid-communication passage is provided with an annular inner convex projection and an annular outer convex projection. These projections engage with the flat surface of the valve seat on the inner side and the outer side of the fluid-communicating passage, respectively. The valve head is provided with a communicating passage for providing communication between a valve body-driving portion side thereof and a valve seat surface side containing the inner convex projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.