Water-activated emergency radio beacon
US5710989A · kind A · utility
23Cited by
14References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Sep 17, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/016
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An emergency position indicating radio beacon, sized for mounting on a life vest or the like, that includes a water-activated switch that automatically activates the transmitter when the water-activated switch is mounted in water. The water-activated switching circuitry includes an insulated electrical paddle that separates the exposed electrical contacts a predetermined distance to insure that the device will not be inadvertently activated by moisture, but that it must be immersed in water for proper contact. The system also includes a memory circuit and power amplification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.