Percussion instrument

Patent metadata

Field	Value
Publication number	US-11114071-B2
Application number	US-201916397170-A
Country	US
Kind code	B2
Filing date	Apr 29, 2019
Priority date	Nov 2, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Provided is a percussion instrument including a substantially cylindrical barrel and a weight fixed to the barrel. More specifically, a plurality of weights 5 A to 5 D may be provided on the inner circumferential surface of a shell 2 of a drum 1 (a percussion instrument). The weights 5 A to 5 D may be provided at positions where the weights 5 A to 5 D have four-fold rotational symmetry in the circumferential direction of the shell 2 . The weights 5 A to 5 D may be each provided between lugs 3 that are provided adjacent to each other on the outer circumferential surface of the shell 2.

First claim

The invention claimed is:

1. A percussion instrument provided with a plurality of lugs, the percussion instrument comprising:
a substantially cylindrical barrel; and
a plurality of weights fixed to the barrel at intervals in a circumferential direction of the barrel, with each weight fixed between and spaced apart from adjacent pair of lugs, among the plurality of lugs, which are spaced apart along the circumferential direction of the barrel.

2. The percussion instrument according to claim 1 , wherein the plurality of weights are fixed to the barrel at positions where the plurality of weights have rotational symmetry in the circumferential direction of the barrel.

3. The percussion instrument according to claim 1 , wherein the total mass of the plurality of weights fixed to the barrel is within the range of 25% to 200% of the mass of the barrel without the plurality of weights.

4. A percussion instrument comprising:
a substantially cylindrical barrel;
a weight provided with magnetic power fixed to the barrel;
a functional part configured to be attached to the barrel; and
a fastening member configured to attach the functional part to the barrel,
wherein at least one component, among the barrel, the functional part, and the fastening member, contains iron, and
wherein the weight is fixed to the at least one component due to the magnetic power.

5. The percussion instrument according to claim 4 , wherein the weight is fixed to at least one of the functional part or the fastening member as a result of the functional part being attached to the barrel using the fastening member.

6. The percussion instrument according to claim 5 , wherein:
the weight is fastened to the functional part, and
the weight, in a state of being fastened together with the functional part, is fixed to the barrel using the fastening member.

7. The percussion instrument according to claim 4 , wherein:
the fastening member comprises at least one bolt,
the weight has a hole through which a bolt, among the at least one bolt, is to be inserted, and
the weight has a circular shape when seen in the axial direction of the hole, and has rotational symmetry with respect to the axis of the hole.

8. The percussion instrument according to claim 4 , wherein the weight is in contact with the barrel at least at two points in the circumferential direction of the barrel, the two points being opposite to each other with respect to the fastening member in the circumferential direction of the barrel.

9. The percussion instrument according to claim 4 , wherein:
the fastening member comprises at least one bolt,
the weight has a hole through which a bolt, among the at least one bolt, is to be inserted, and
the weight has a teardrop shape when seen in the axial direction of the hole, and is disposed so that the lengthwise direction of the weight is substantially parallel to the axial direction of the barrel.

10. The percussion instrument according to claim 9 , wherein:
the weight includes a protrusion protruding toward the barrel, and
the protrusion is in contact with the barrel when the weight is fixed to the functional part with the bolt inserted into the hole.

11. The percussion instrument according to claim 4 , wherein:
the weight fixed to the barrel is provided as one or more weights, and
the total mass of the one or more weights fixed to the barrel is greater than 25% of the mass of the barrel without the one or more weights.

12. The percussion instrument according to claim 4 , wherein the functional part is a lug.

13. The percussion instrument according to claim 1 wherein each of the plurality of weights is columnar shaped that is sufficiently short compared to an inner diameter of the barrel.

14. The percussion instrument according to claim 7 , wherein the weight includes a release hole that is greater than the hole through which the bolt is to be inserted.

15. A weight configured to be fixed to a percussion instrument including a substantially cylindrical barrel, the weight comprising:
a weight body including a hole through which a bolt is to be inserted and having a teardrop shape when seen in the axial direction of the hole,
wherein the weight body is configured to be fixed to the barrel with the bolt inserted into the hole so that the lengthwise direction of the weight is substantially parallel to the axial direction of the barrel,
wherein the weight body includes a protrusion protruding toward the barrel, and
wherein the protrusion is in contact with the barrel when the weight is fixed to barrel with the bolt.

Assignees

• Yamaha Corp

Inventors

• Hashimoto Ryuji
• Nagai Noritaka
• Abe Banri

Classifications

• G10D13/02 Primary

  Drums; Tambourines with drumheads · CPC title

• G10D13/10 Primary

  Details of, or accessories for, percussion musical instruments · CPC title

• G10D13/22

  Shells · CPC title

• G10D13/25

  for changing the sound or tone (mutes or dampers G10D13/12) · CPC title

• G10D13/00

  Percussion musical instruments; Details or accessories therefor (struck string instruments G10D1/14) · CPC title