Pen recorder
US5313557A · kind A · utility
37Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1991 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/0208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pen recorder comprises a hollow pen body having a proximal end and a distal end a solid state audio recorder in its interior. A retractable pen mechanism is mounted on the distal end of the pen body, and a microphone transducer and speaker transducer are mounted at the proximal end. The speaker transducer is transversely mounted across an open proximal end of the pen body so that the interior of the pen body acts as a resonator improving the sound quality of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.