# US 2013/0239776 A1 · Acoustical Device For Drum

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- Number: US 2013/0239776 A1
- Document ID: US20130239776A1
- Status: Published application
- Kind: A1
- Application number: 13/775,819
- Filed: 2013-02-25
- Published: 2013-09-19
- Earliest claimed: 2010-01-14
- Inventors: Eric Schmidt
- Web page: https://patentgrep.com/patent/US20130239776A1

## CPC

- G10D 13/25: {for changing the sound or tone (mutes or dampers G10D13/12)}
- G10D 13/02: Drums; Tambourines with drumheads
- G10D: STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR (organs, harmoniums or similar wind musical instruments with associated blowing apparatus G10B; pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards G10C; automatic musical instruments G10F; electrophonic musical instruments in which tones are generated by electromechanical means G10H)

## 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.

## Claims

### Claim 1

A device for changing an acoustic effect of a drum, the drum having a drumhead, the device comprising:
an outwardly flared portion;
an inwardly flared portion;
a substantially cylindrical outwardly threaded joining portion, the joining portion being receivable through a hole defined in the drumhead, the hole having an edge, the outwardly flared and inwardly flared portions being screwable onto the joining portion from opposite sides of the drumhead to clamp down onto the drumhead around the hole.

### Claim 2 (depends on 1)

The device of claim 1 wherein a first washer is provided which is received between the outwardly flared portion and a first side of the edge of the hole, and a second washer is received between the inwardly flared portion and an opposite side of the edge of the hole, and when the outwardly flared and inwardly flared portions are screwed onto the joining portion, the first and second washers are sandwiched between the flared portions and the drumhead.