Segmented core for an inductive proximity sensor
US7262595B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Jul 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive proximity sensor for sensing the presence of target based on a change of inductance in the sensor. The sensor includes a coil and a core formed of a permeable material so as to form an electromagnetic field when the coil is electrically driven. The core has a base, a central post, an outer wall, and at least one slot. The central post extends distally from the base and through the coil and defines a distal end. The outer wall extends distally from the base and around the coil and also defines a distal end. The slot or slots are for enhancing the performance of the sensor by reducing eddy current losses in the core. Each slot extends at least partially along a path defined from the distal end of the outer wall to the base and from the base to the distal end of the central post.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.