Vibration isolating bushing with embedded angular position sensor
US7370853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Apr 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bushing assembly adapted for application in vehicle suspension systems includes an outer, generally cylindrical bushing member, an inner generally cylindrical bushing member arranged concentrically within the outer member. The two bushing members are interconnected by an elastomeric member disposed there between and bonded thereto to permit limited rotational displacement between the external and internal bushing members. An angular position sensor is at least partially embedded within the elastomeric member and operative to produce an output signal indicative of the relative angular position of the external and internal bushing members. The sensor includes a stator assembly including a permanent magnet, a galvanomagnetic sensing element and a flux guide defining at least one pole face, and a rotor including a flux guide defining a second pole face. An air gap between the two pole faces varies dimensionally as a function of the relative angular position of the stator assembly and rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.