Telecommunication device with piezo-electric transducer for handsfree and private operating modes
US6453045B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Feb 4, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6041
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telecommunication device (10) includes a housing (14, 16) and a dual earpiece arrangement (26) associated with the housing. The dual earpiece arrangement (26) includes a handsfree transducer (28) that generates dispatch-level audio output in a handsfree operating mode of the telecommunication device, and a private-mode transducer (38) that generates private-level audio output in a private operating mode of the telecommunication device. In particular, the device (10) includes a cantilevered bender (30) having a first end and a second end wherein the first end of the bender is mounted to the housing (16), a diaphragm (32) having a first end and a second end wherein the first end of the diaphragm (32) is attached to the second end of the bender (30), and a surround (34) joining the second end of the diaphragm (32) to the housing (16). The bender (30) drives the diaphragm (32) in a reciprocating manner to generate dispatch level audio output. The private-mode transducer (38) is positioned within a cavity of the diaphragm (32) for generating private-level audio output. At least one of the handsfree transducer (28) and the private-mode transducer (38) is formed with multiple layers, at…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.