Micro magnetic proximity sensor system
US7301334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jun 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2036/0093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system that senses proximity includes a magnet producing a magnetic field and a sensor having a switch. The switch includes a cantilever supported by a supporting structure. The cantilever has a magnetic material and a longitudinal axis. The magnetic material makes the cantilever sensitive to the magnetic field, such that the cantilever is configured to move between first and second states. The switch also includes contacts supported by the support structure. The switch can be configured as a reed switch. When the magnet moves relative to the sensor, the cantilever interacts with a respective one of the contacts based on the position of the magnet during movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.