Modified dual diaphragm pressure sensor
US7100453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2004 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Nov 11, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K2099/0094
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for sensing pressure using two flexible diaphragms in which an additional element is added to promote rolling contact of the diaphragm. One embodiment aligns the flexible diaphragms in a non-parallel alignment such that deflection of one flexible diaphragm will roll with respect to the other to provide increased linear capacitive response. In another embodiment a non-conductive spacing element is positioned between the diaphragms to permit rolling contact upon displacement of a diaphragms. These devices are capacitive pressure gauges. One additional embodiment includes a cantilever hinge and rigid polymer disc to convert one diaphragm into a linearly deflecting diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.