Magnetic field sensor mounting with sensor arm contacting rotating bearing member
US5017866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1990 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Feb 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/443
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic field source is mounted on one race of a two-race radial or thrust bearing. The race with the magnetic field source rotates. The other race does not rotate. A magnetic field sensor is mounted on a flexible arm of a rigid arm support. The arm support with its flexible arm does not rotate but the flexible arm may flex in response to movement of either of the races or the flexible arm support member so that the magnetic field sensor is always kept a constant predetermined distance from the magnetic field source. The number of times alternate magnetic poles on the rotating race is sensed by the sensor per unit of time indicates the speed of the rotating race.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.