Method of activating a supplemental visual warning signal based on frequency emitted from a generator of a primary audible warning signal
US9741217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Feb 6, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/50
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A system and method for signaling users including a control device electrically connected to a transceiver. The transceiver has a specified frequency. A first mobile signal device being activated by a first user and electrically communicating with a first transmitter having a selectable signal frequency. The first transmitter electrically communicates with the transceiver using the specified frequency. A second signal device includes a second receiver for receiving an activation signal from the transceiver. The second receiver electrically communicates with the transceiver using the specified frequency. The second signal device is activated by the activation of the first mobile signal device using the transceiver for alerting other persons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.