Acoustical device for drum
US8835734B2 · kind B2 · utility
2Cited by
7References
2Claims
0Family size
Inventor
Key dates
| Filing date | Feb 25, 2013 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10D13/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed is a device which is designed to improve the accoustics of a drum. The device has two halves, and it attaches about a hole formed in the drum head. One or both halves have portions which can be flared to a variety of degrees, e.g., 90 degrees, 180 degrees, 360 degrees or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.