Apparatus for measuring magnetic particles suspended in a fluid based on fluctuations in an induced voltage
US5001424A · kind A · utility
44Cited by
16References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Feb 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for detecting magnetic particles suspended in a liquid, such as particles suspended in lubricating oil flowing through an engine. The oil is caused to pass through the area coupling two or more coils while the mutual inductance of the coils is monitored. When a magnetic particle enters the area coupling the coils, the mutual inductance of the coils will increase, thereby indicating the presence of the particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.