Cajon
US9905206B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 11, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Mar 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10D13/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cajones or cajon drums include a variety of improvements over existing cajones. Improvements include improved rigidity of sides other than a side containing a striking surface to prevent loss of volume, a vent hole located on a same side as the striking surface, the use of layers of maple to provide the striking surface, the use of added masses on the striking surface to modify the fundamental frequency of the striking surface, the use of a receptacle containing small metal (copper or silver) items to provide a snare effect, internal dimensions of the cajon chosen to match resonant frequencies of a selected style of music, and the use of damping materials in the cajones to modify the tone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.