Double relay light switching system for providing daytime running lights for vehicles
US5912534A · kind A · utility
235Cited by
19References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/21
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A double relay control circuit for connection between the ignition switch and starter switch of a vehicle and the vehicle power supply and exterior lights for providing automatic daytime running lights whenever the vehicle ignition switch is ON and the starter switch is OFF and subject to being overridden by the conventional light switches and ambient condition and vehicle condition sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.