Composite annular element, usable as a pulse wheel and made of a metal inner annular ring and an outer ring formed of fragile material
US5723977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | May 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/443
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A composite annular element, in particular a magnetic ring usable as a pulse wheel in a rolling bearing of a vehicle wheel hub; the element includes an appropriately polarized plastoferrite ring co-molded onto a metal annular ring for fitment to a rotary member; the metal annular ring is formed in one piece by pressing and bending sheet metal, and presents a sleeve portion for fitment to the rotary member, and a flange portion defining a shoulder for withstanding the axial thrust exerted by an assembly fixture, and connected continuously to the sleeve portion by a rib projecting radially outwards of the sleeve portion; the rib being defined by a 180.degree. bend partially embedded inside the plastoferrite ring so as to leave a continuous annular radial clearance between the plastoferrite ring and the sleeve portion of the metal annular ring; and the rib preferably presenting locking means, which are embedded in the plastoferrite to prevent the metal annular ring and the plastoferrite ring from rotating in relation to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.