Method and apparatus for maintaining auto voltage
US4783619A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1987 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Sep 21, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply back-up device is capable of supplying auxiliary electrical power to a motor vehicle when the vehicle storage battery is disconnected. The computer memory back-up device comprises a plug for inserting into the vehicle cigar lighter, a body with contacts for engaging a nine-volt battery, and wires joining the plug and body. Voltage from the nine-volt battery energizes the motor vehicle circuit when the main battery is disconnected for service, thereby enabling computer controlled accessories to retain their pre-set settings. As a result, reprogramming the accessories after removal and restoration of the normal and electrical power is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.