Automatic headlamp activation system for motor vehicles
US5841203A · kind A · utility
28Cited by
13References
25Claims
0Family size
Inventors
Key dates
| Filing date | Apr 24, 1995 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Apr 24, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/052
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system is described for causing automatic activation of vehicle low beam headlamps. Three voltage sensors, including a voltage slope detector for sensing engine start-up, cause activation whenever the engine is running. Separate master and slave modules allow for retrofit installation using the vehicle's existing wiring harness. Cables and cable connectors connect the system directly to the headlamp wiring harness, headlamp base, and vehicle battery without the need for splicing. The system can be bypassed or overridden by operation of the vehicle's standard headlamp switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.