Low profile greeting card speaker
US8135161B1 · kind B1 · utility
0Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2011 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Nov 9, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low profile miniature speaker configured for use in greeting cards such as sound generating greeting cards and other novelties. The thickness of the speaker is minimized while maintaining the sound quality and increasing strength. The speaker magnet is counter-sunk into the housing of the speaker, thereby decreasing overall thickness. The speaker is configured with concentric ribs that radiate outward from the center of the circular speaker. The ribs reinforce the plastic housing and increase the structural strength of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.