Audio cone module
US6952168B2 · kind B2 · utility
5Cited by
33References
61Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Jul 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A safety device, comprising at least one sensor for sensing the presence of an object and a warning system that emits at least one precreated verbal warning message after the sensor senses an object. The warning system includes a control system that allows a user to select at least one of a plurality of precreated verbal warning messages for emission. In another embodiment, a safety device comprises a safety cone, a sensor disposed on the safety cone and that senses an object, and a warning system disposed at the top of the safety cone and that emits at least one warning signal after the sensor senses an object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.