Mobile member speed sensor
US7511475B2 · kind B2 · utility
4Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2003 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Jul 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F21/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A speed sensor for a moving member (8) comprises means (27; 34) for constituting a magnetic singularity on a portion of the moving member, and a sleeve slidably receiving said portion and including at least an annular coil (20, 21) and an annular permanent magnet (22, 23) disposed on a common axis between annular pole pieces (24, 25).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.