Vehicle steering column control system
US5636863A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1994 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Apr 26, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R16/027
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control circuit is provided for transferring power and communication signals through a wireless coupling device in a vehicle steering column. The device can comprise a rotary transformer having a primary and secondary magnetic structure respectfully associated with the wheel side and column side of the steering column. A squib power circuit transforms a high energy power signal suitable for firing an air bag from the column side to the wheel side. A low energy power circuit generates a signal from the column side to the wheel side suitable for operating isolated wheel side electronics, such as cruise control and the like. A tone encoder and decoder circuit communicates low level control signals suitable for signalling wheel side commands from the wheel side to the column side. The low energy power circuit and the tone encoder circuit operate simultaneously and continuously without signal debilitating interaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.