Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device
US7302854B2 · kind B2 · utility
1Cited by
19References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2005 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows or flexible diaphragm. The position at high pressures can be detected optically by the interruption or reflection of light beams, or electrically by sensing contact closure or deflection via strain gauges. Electrical sensing is provided by microcircuits that are operated at high voltage device potentials, transmitting pressure information via RF or optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.