Patent · US Expired

Device for the contactless transfer of signals between two vehicle parts

US5994788A · kind A · utility

13Cited by

6References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Dobler · Gerlingen, DE
Erich Zabler · Blankenloch, DE
Anton Dukart · Gerlingen, DE
Thomas Herrmann · Neuenstadt am Kocher, DE

Key dates

Filing date	Feb 27, 1998
Grant date	Nov 30, 1999
Priority date	—
Expiry date	Feb 27, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH01F38/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The transfer unit which brings about the signal connection between an airbag installed in a steering wheel and a circuit arranged outside the steering wheel possesses a primary and a secondary winding which are located in separate annular dished cores which are mounted rotatably with respect to one another about the steering wheel axis. To ensure that the transfer unit transfers airbag measurement signals with minimal falsification, one of its two dished cores is equipped with a U-shaped cross section, and the other dished core projects into the latter, so that the magnetic flux intersects the air gaps remaining between the two dished cores preferably in a direction radial to the rotation axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.