Silencer for wind instrument

Patent metadata

Field	Value
Publication number	US-9583079-B2
Application number	US-201414313413-A
Country	US
Kind code	B2
Filing date	Jun 24, 2014
Priority date	Jun 24, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A silencer for a wind instrument includes a hollow pipe whose one end is closed and serves as a closed end. The pipe includes an outer wall having at least one of at least one recessed portion and at least one protruding portion on a portion of the outer wall near the closed end.

First claim

What is claimed is:

1. A silencer for a wind instrument, comprising a hollow pipe whose one end in a direction along an axis of the pipe is a large-diameter end and serves as a closed end,
the pipe comprising an outer wall on which a plurality of recessed portions or at least one protruding portion are formed in a vicinity of the closed end,
the outer wall comprising a conical side wall which defines a side end of an inner space of the pipe, and a bottom wall which closes one end of the side wall such that the bottom wall defines a bottom end of the inner space of the pipe,
wherein the plurality of recessed portions are formed on the outer wall and arranged around the axis of the pipe,
wherein each of the plurality of recessed portions extends continuously from an outer surface of the bottom wall to an outer surface of the side wall, and
wherein the plurality of recessed portions are formed on an outer edge of the bottom wall by a connection of the large-diameter end of the pipe to the outer surface of the bottom wall while keeping a shape of the plurality of recessed portions formed on the outer wall of the pipe.

2. The silencer according to claim 1 , wherein the portion of the outer wall of the pipe in the vicinity of the closed end comprises the plurality of recessed portions.

3. The silencer according to claim 1 , wherein the plurality of recessed portions and a plurality of protruding portions, as the at least one protruding portion are formed on the outer wall, and each of the plurality of protruding portions are disposed between corresponding two of the plurality of recessed portions which are adjacent to each other, wherein each of the plurality of recessed portions is bent in a direction toward the axis of the pipe, and wherein each of the plurality of protruding portions is bent in a direction away from the axis of the pipe.

4. The silencer according to claim 1 , wherein a distance between each of the plurality of recessed portions and the axis of the pipe is constant in an area in which the plurality of recessed portions are formed in a direction in which the axis of the pipe extends.

5. The silencer according to claim 1 , wherein the number of the plurality of recessed portions is an odd number.

6. The silencer according to claim 1 , wherein the plurality of recessed portions comprise two recessed portions arranged such that an angle of (i) a line connecting one of the two recessed portions and the axis of the pipe and (ii) a line connecting another of the two recessed portions and the axis of the pipe is 180 degrees.

7. The silencer according to claim 1 , wherein at least one of the plurality of recessed portions and the at least one protruding portion is repeatedly provided around the axis of the pipe so as to be spaced apart from each other uniformly.

8. The silencer according to claim 2 , wherein another end of the pipe is an open end, and wherein at least one depression deeper than the plurality of recessed portions in a direction toward the axis of the pipe is formed in a portion of the outer wall which is nearer to said another end than the portion of the outer wall in which the plurality of recessed portions are formed.

9. The silencer according to claim 2 , wherein the plurality of recessed portions comprises a friction increaser configured to increase a coefficient of friction of the recessed portions such that the coefficient of friction is greater than that of a portion of the outer wall in which the plurality of recessed portion are not formed.

10. The silencer according to claim 2 , wherein when a force is applied to the portion of the outer wall in the vicinity of the closed end, the plurality of recessed portions are formed by deformation of the outer wall from a shape thereof taken when no force is applied to the portion of the outer wall in the vicinity of the closed end.

11. A silencer for a wind instrument, comprising a hollow pipe whose one end in a direction along an axis of the pipe is closed and serves as a closed end, the pipe comprising an outer wall on which a plurality of inequalities are formed on a portion thereof in a vicinity of the closed end,
the outer wall comprising a conical side which defines a side end of an inner space of the pipe, and a bottom wall which closes one end of the side wall such that the bottom wall defines a bottom end of the inner space of the pipe,
wherein the plurality of inequalities are formed on the outer wall and arranged around the axis of the pipe, and
wherein each of the plurality of inequalities extends continuously from an outer surface of the bottom wall to an outer surface of the side wall, and
wherein the plurality of inequalities are formed on an outer edge of the bottom wall by a connection of a large-diameter end of the pipe to the outer surface of the bottom wall while keeping a shape of the plurality of inequalities formed on the outer wall of the pipe.

12. The silencer according to claim 1 , wherein a first end of each of the plurality of recessed portions is positioned on the large-diameter end of the pipe and a second end of each of the plurality of recessed portions are positioned such that a position of the second end of each of the plurality of recessed portions is nearer to the bottom wall than a mount portion which contacts with an inner wall of a bell of the wind instrument.

13. The silencer according to claim 1 , wherein the plurality of recessed portions or the at least one protruding portion are repeatedly provided in a smooth wavy shape around the axis of the pipe.

14. The silencer according to claim 11 , wherein a first end of each of the plurality of inequalities is positioned on the large-diameter end of the pipe and a second end of each of the plurality of inequalities are positioned such that a position of the second end of each of the plurality of inequalities is nearer to the bottom wall than a mount portion which contacts with an inner wall of a bell of the wind instrument.

Assignees

• Yamaha Corp

Inventors

• Suenaga Yuichiro
• Tatsumi Keizo

Classifications

• G10D9/06 Primary

  Mutes · CPC title