Alarm mat
US9115849B2 · kind B2 · utility
0Cited by
12References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Nov 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An alarm mat includes a sheet, and sound producer from which sound is produced by air inflow and outflow. The sheet is provided with a plurality of projections made of an elastic material, projecting toward an upper-surface side of the sheet with top portions thereof continuously extending, and each having a sealed cavity inside. The plurality of projections are juxtaposed to each other. The sound producer is loaded in the sheet in a manner that air flows in and out of the projections through the sound producer alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.