Car alarm having a soft chirp arming signal
US5572185A · kind A · utility
8Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2225/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronic anti-theft system for vehicles having a common signal generator and speaker for both the alarm siren and the arming chirp, in which the volume of the arming or disarming chirp can be set to a desired level. A control circuit is detailed which allows the volume of the arming chirp to be attenuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.