Portable radio telephone having improved speaker and housing assembly for handsfree and private operation
US6064894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | May 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable radio telephone is adapted to provide handsfree operation and adapted to be held against a user's ear to provide private operation. A housing of the portable radio telephone has an ear placement region on a front surface thereof. A speaker is disposed in the housing behind the ear placement region. The ear placement region is adapted to be held against a user's ear to provide private operation creating a first air volume between the user's ear and the ear placement region. In a preferred embodiment, an air path between the first air volume to a second air volume at the back surface of the housing includes at least a first port positioned within the ear placement region, an air cavity within the housing, and at least a second port positioned at a back surface of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.