Illuminated trail marker apparatus
US7525424B2 · kind B2 · utility
4Cited by
21References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A remotely actuated trail marker apparatus includes a transmitter unit designed to be carried by a hiker or hunter, which selectively broadcasts an interrogation signal throughout a predetermined range. One or more associated receiver units are adapted for pre-positioning at specific trail waypoints or a final destination. Each receiver unit generates a user sensible reply signal, such as self-illumination, in response to receiving the interrogation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.