Hazard warning sign
US6035567A · kind A · utility
26Cited by
10References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jul 23, 1996 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Jul 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/0472
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hazard warning sign assembly having a sign plate displaying a warning message, and at least one flashing light and horn for generating visual and audible signals for attracting attention to the sign. A rechargeable battery pack forms a detachable handle for the sign plate and the signal housing. A telescoping pole portion mounted to the lower end of the elongate battery pack is provided for height adjustment of the assembly. Manually operable switch buttons control actuation of the flashing light and horn units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.