Method of mounting elastic wave generator
US6804875B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 11, 2003 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An elastic wave generator includes an excitation coil, a magnetostriction oscillator around which the excitation coil is wound and an oscillator support. The excitation coil is wound around the oscillator, which is made of laminated magnetostriction sheets having a positive strain characteristic, in which length varies directionally upon magnetic excitation. The oscillator support has a first support surface bearing against a first end surface of the magnetostriction oscillator, intersecting the direction along which the length of the magnetostriction oscillator changes and a second support surface shrink-fit against a second end surface of the magnetostriction oscillator, intersecting the direction along which the length of the magnetostriction oscillator changes. Thus, the changes in the length of the magnetostriction oscillator due to the magnetic excitation of the excitation coil appearing at the first and second end surfaces is directly supported by the first and second support surfaces. The magnetostriction oscillator is shrink-fit by cooling so it may be placed between the support surfaces while cooled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.