# US 9,435,671 B2 · Paraboloidal percussion instrument

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- Number: US 9,435,671 B2
- Document ID: US9435671B2
- Status: Granted
- Kind: B2
- Application number: 14/402,596
- Filed: 2012-12-12
- Published: 2015-05-21
- Granted: 2016-09-06
- Earliest claimed: 2012-05-20
- Assignees: Gerhard Salomon
- Applicants: Gerhard Salomon
- Inventors: Gerhard Salomon
- Web page: https://patentgrep.com/patent/US9435671B2

## CPC

- G01D 13/02: Scales; Dials
- G10D 13/02: Drums; Tambourines with drumheads
- Y10T 29/49574: Musical instrument or tuning fork making
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A percussion instrument, in the simplest case in the form of a djembe, having one or more interconnected resonators in the form of elliptical paraboloids, which meet at their focal points. At or near this common focal point, sound-receiving or sound-emitting devices may be additionally placed. An expedient embodiment provides that the resonators are of a form in which they can be dismantled. A possible method for producing a suitable form is provided by making rings out of plate material.

## Claims

### Claim 1

A percussion instrument comprising:
a plurality of hollow interconnected resonating bodies having least one face, wherein the resonant bodies have an inner side surfaces forming elliptical paraboloids, the elliptical paraboloids having focal points which coincide.

### Claim 2 (depends on 1)

The percussion instrument of claim 1, wherein the paraboloids have different sizes.

### Claim 3 (depends on 1)

The percussion instrument of claim 1, further comprising a sound receiving or sound emitting device placed at the common focal point.

### Claim 4 (depends on 1)

The percussion instrument of claim 1, wherein the face is a spatially profiled surface.

### Claim 5

A method for manufacturing a percussion instrument having a plurality of hollow interconnected resonating bodies having least one face, wherein the resonant bodies have an inner side surfaces forming elliptical paraboloids, the elliptical paraboloids having focal points which coincide, the method comprising the steps of:
generating a plurality of rings of plate material with varying diameters which stacked form a plurality of elliptical paraboloid shape; and
assembling of the plurality of rings and joining the rings together to form a plurality of elliptical paraboloid shaped resonating bodies.

### Claim 6 (depends on 1)

The percussion instrument according to claim 1, wherein the resonance bodies are dismantleable.

### Claim 7 (depends on 5)

The method for manufacturing a percussion instrument according to claim 5, wherein the paraboloids have different sizes.

### Claim 8 (depends on 5)

The method for manufacturing a percussion instrument according to claim 5, wherein a sound receiving or sound emitting device is placed at the common focal point.

### Claim 9 (depends on 2)

The percussion instrument according to claim 2, wherein the resonance bodies are dismantleable.

### Claim 10 (depends on 3)

The percussion instrument according to claim 3, wherein the resonance bodies are dismantleable.