Foldable portable telephone set
US5493690A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0214
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A foldable portable telephone set which allows switching between a speech holding condition and a speaking condition without the necessity of an operation of a key thereby to prevent an operation in error. An open or closed condition of a cover section relative to a body section is detected by means of a reed switch provided on the cover section, a magnet provided on the body section, and a detection circuit for detecting an on- or off-state of the reed switch. A speech holding condition is established when it is detected that the cover section is closed during speech. In the speech holding condition, manually operable keys are covered with the body section and not exposed outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.