Transducer with tensioned-wire precompression
US4438509A · kind A · utility
21Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1981 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rod of magnetostrictive material has its ends placed between steel bars which provide compression on the rod by tensioning wires connected between the bars. Preferably, the wires are equally spaced along the bars from the rod so that when the wires are equally tensioned the rod is under no bending stress. The tension of the wires (and from this value, the compression of the rod) is conveniently determined by the freqency of vibration of the wires using known physical relationships between these quantities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.