Method and apparatus for magnetically measuring the thickness of a high relative permeability lubricant film between two relatively moving surfaces
US5180980A · kind A · utility
1Cited by
4References
6Claims
0Family size
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Key dates
| Filing date | Jun 6, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Jun 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/105
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Method for measuring the thickness of a lubricant film between two surfaces which are in motion with regard to one another, characterized by the fact that a lubricant with high relative permeability is used, whereby the polar pieces of an electromagnetic sensor are brought into contact with the lubricant film to be measured in such manner that they are bridged by the lubricant film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.