Valve and valve control method
US6253749A · kind A · utility
6Cited by
16References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vacuum actuated valve uses a specially designed spring having a spring rate as a function of valve position. The spring rate function is determined using physical relationships between flow, pressure, and valve s position. The result is that the relationship between the control input to the valve (either a vacuum signal, or an electrical signal to a vacuum source) and the flow through the valve are linearly related through the entire operating region of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.