Device for detecting relative speed of inner and outer rings for an ABS braking system
US5264790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1991 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Jul 1, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting speed in a braking system between two relatively rotatable elements, such as, the inner and outer rings of a roller bearing used to support a vehicle wheel. The device includes a first deflector mounted on one of the bearing rings having a magnetized ring member and a plurality of radially outwardly facing poles separated by non-magnetized spaces and a serrated annular member having a plurality of radially inwardly facing ribs. The device further includes a second deflector integral with a fixed ring of the bearing having at least one magnetic sensor engageable between the two bearing rings and spaced to intersect the magnetic fields to produced a plurality of signals per revolution. The signal produced by the sensor has a frequency proportional to the relative speed of the inner and outer bearing rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.