Driver alert system for the steering wheel of a motor vehicle
US7902987B2 · kind B2 · utility
11Cited by
5References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2008 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | May 27, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/029
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A driver alert system for the steering wheel of a motor vehicle. The system comprises an electric motor, an eccentric mass connected to the electric motor, and a control circuit for providing electric supply to the electric motor in response to an alert activation signal The motor is controlled by the control circuit to an operation level of voltage during a portion of a vibration period with a non-vibration period following the vibration period, and the motor is over or under-controlled with respect to the operation range at the beginning or end of said vibration period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.