Magnetostriction detection type sensor
US6389911B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetostriction detection type sensor includes a substrate. This substrate is bonded, through an adhesive or the like, with a magnetostrictive element of a circular columnar form and a cylindrical magnetostriction detecting coil coaxially receiving magnetostrictive element. The substrate is also mounted with a housing case formed by a magnetic member, to accommodate a magnetostrictive element and magnetostriction detecting coil nearly in a shield state. The housing case is formed with a projection that is in surface contact with a tip surface of the magnetostrictive element, and a spherically formed tip for contacting an object to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.