Method for measuring stresses or forces
US4138783A · kind A · utility
23Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | May 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for measuring stresses or forces by measurement of variations of the magnetic properties of ferromagnetic substances under stress conditions. This is carried out by providing a ring of ferromagnetic material between two parallel faces on or between which the stresses are exerted, the ring defining a magnetic circuit, providing an electric coil within and around the ring, passing a current through the coil and measuring changes in the properties of the current to measure variations in the magnetic properties of the ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.