Audible signal device and machines using same
US7292136B2 · kind B2 · utility
0Cited by
14References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2005 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Jul 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R27/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audible signal device which includes a DC to DC converter is provided. A group of work machines is further provided, including at least two work machines having electrical systems with different operating voltages. First and second audible signal devices are coupled with the first and second electrical systems respectively, wherein the second audible signal device is interchangeable with the first audible signal device and at least one of the devices includes a DC to DC converter. A method of assembling a plurality of dissimilar machines, each including an interchangeable audible signal device is further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.