Acoustic backup alarm for providing acoustic and dual technology (acoustical and optical) operation
US8669852B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Jan 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A reflex speaker which provides an acoustic signal generator for acoustic alarm signals is captured in a housing through which the acoustic signals project via ports at the exit end of the housing. The housing defines a compartment at the exit end with an opening which is covered so that the acoustic signals project out of the exit end around the compartment. The cover may be a transparent cover which provides a lens through which optical signals generated by optics in the compartment provided by either LEDs to provide an optical warning signal, or a video camera, such as a CCD, which responds to visual signals as from hazards at the rear of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.