Automatic headlight control system
US4337400A · kind A · utility
Inventor
Key dates
| Filing date | Jul 16, 1980 |
| Grant date | Jun 29, 1982 |
| Priority date | — |
| Expiry date | Jul 16, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/312
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic headlight control system for utilization in conjunction with the ignition system and the windshield wiper system of an automobile is disclosed. The control system utilizes a single switching relay to automatically control the operation of the automobile's headlights when the ignition system and windshield wipers are concurrently activated. When the automobile ignition is activated, i.e., in the on or running position, the activation of the windshield wiper switch causes the switching relay to be energized thereby automatically activating the headlights; the de-activation of the windshield wiper switch causes the switching relay to be deenergized thereby automatically inactivating the headlights. Turning the ignition switch to the off position causes both the headlights and windshield wipers to be turned off automatically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.