Portable radio telephone having a slidable speaker unit
US5461672A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Jul 15, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0237
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable radiotelephone transmits and receives voice information signals to and from a telephone base station by radio. The radio telephone includes a telephone main body having a key pad section mounted on its outer surface and containing a microphone unit. A speaker housing containing a speaker unit is slidably mounted on the telephone main body. A switching unit located between the telephone body and the speaker housing establishes electrical connection and disconnection between the telephone body and the speaker housing depending upon their relative positions as changed by sliding the speaker unit. Electrical connection is established when the speaker housing is moved in a direction away from the microphone unit located on the telephone main body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.