Tone bar woody material, tone bar percussion instrument, and production method of tone bar woody material

Patent metadata

Field	Value
Publication number	US-10453433-B2
Application number	US-201715798531-A
Country	US
Kind code	B2
Filing date	Oct 31, 2017
Priority date	Nov 1, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

An object of the present invention is to provide a tone bar woody material and a xylophone that are superior in acoustic characteristics and stable in quality. In the tone bar woody material of the present invention, at least a partial region of a surface layer of a wood material was impregnated with a resin composition, and the wood material comprises in the partial region, a plurality of pores each having an average diameter less than 1.2 times an average diameter of vessels in the wood material.

First claim

The invention claimed is:

1. A tone bar woody material comprising:
a wood material provided with vessels with a predetermined average diameter; and
a resin composition,
wherein at least a partial region of a surface layer of the wood material is impregnated with the resin composition, and
wherein the wood material, in the partial region, is provided with a plurality of pores each having an average diameter that is no less than 10 μm and no greater than 500 μm, which is less than 1.2 times the predetermined average diameter of the vessels in the wood material.

2. The tone bar woody material according to claim 1 , wherein a central axis direction of the plurality of pores is substantially perpendicular to a surface of the wood material.

3. The tone bar woody material according to claim 1 , wherein an average depth of the plurality of pores is no less than 0.1 mm and no greater than 10 mm.

4. The tone bar woody material according to claim 1 , wherein an average pitch of the plurality of pores is no less than 0.2 mm and no greater than 10 mm.

5. The tone bar woody material according to claim 1 , wherein number of the plurality of pores per unit area is no less than 14 pores/cm 2 and no greater than 900 pores/cm 2 .

6. A tone bar percussion instrument including a tone bar woody material, the tone bar percussion instrument comprising:
a wood material provided with vessels with a predetermined average diameter; and
a resin composition,
wherein at least a partial region of a surface layer of the wood material is impregnated with the resin composition,
wherein the wood material, in the partial region, is provided with a plurality of pores each having an average diameter that is no less than 10 μm and no greater than 500 μm, which is less than 1.2 times the predetermined average diameter of the vessels in the wood material.

7. A production method of a tone bar woody material comprising a wood material provided with vessels with a predetermined average diameter, and a resin composition, the production method comprising:
manipulating the wood material, in a partial region of a surface layer of the wood material, to form a plurality of pores each with an average diameter that is no less than 10 μm and no greater than 500 μm, which is less than 1.2 times the average diameter of vessels in the wood material;
impregnating at least the partial region provided with the plurality of pores with the resin composition; and
hardening the resin composition.

8. The production method according to claim 7 , wherein the impregnating comprises:
impregnating the wood material with the resin composition while deaerating the wood material under sub-atmospheric pressure; and
then impregnating the wood material with the resin composition under ordinary pressure.

Assignees

• Yamaha Corp

Inventors

• Hirai Eri
• Soga Kazuki
• Hiraku Tatsuya

Classifications

• G10D13/06

  Castanets, cymbals, triangles, tambourines without drumheads or other single-toned percussion musical instruments · CPC title

• G10D13/08 Primary

  Multi-toned musical instruments with sonorous bars, blocks, forks, gongs, plates, rods or teeth · CPC title

• B27K3/08

  Impregnating by pressure {, e.g. vacuum impregnation} · CPC title

• B27K3/36

  Aliphatic compounds · CPC title

• B27K3/15

  Impregnating involving polymerisation {including use of polymer-containing impregnating agents (macromolecular compounds derived from lignocellulosic materials C08H; compositions of lignin-containing materials C08L97/02)} · CPC title