Reinforced elastomeric diaphragm
US7739915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2008 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jan 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D7/0106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diaphragm is provided that includes a plurality of zonal portions that define reinforced and non-reinforced areas of the diaphragm. A first zonal portion extends from a marginal edge portion toward a central portion and is formed of a fabric material. A second zonal portion extends from the first zonal portion toward the central portion and is formed of an elastomer. A third zonal portion defines the central portion and is formed of a fabric material. The combination of reinforced and non-reinforced portions provides for a decrease in the radial tension (spring rate) of the diaphragm and helps prevent undesired changes to the flow control valve flow setpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.