Current to pressure tranducer employing magnetic fluid
US4874005A · kind A · utility
5Cited by
2References
10Claims
0Family size
Inventor
Key dates
| Filing date | Dec 7, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Dec 7, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2409
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A current-to-pressure transducer that is insensitive to shock employs a magnetic fluid that deforms a flexible diaphragm in response to an electrical input current that is applied to a coil and magnetic circuit. The deformed diaphragm varies the air space between the diaphragm and a nozzle connected to the air line so that the pressure within the air line is effectively controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.