Method of manufacturing electronic percussion pad

Patent metadata

Field	Value
Publication number	US-9373311-B2
Application number	US-201414459704-A
Country	US
Kind code	B2
Filing date	Aug 14, 2014
Priority date	Aug 20, 2013
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

An electronic percussion pad includes: a pad main body that is formed of a foaming elastomer; and a composite layer that includes an expandable fiber sheet laminated on a front surface of the pad main body. In the composite layer, fiber of the fiber sheet and a foaming elastomer of the pad main body are present, and the composite layer contains bubbles.

First claim

What is claimed is:

1. An electronic percussion pad comprising:
a pad main body that is formed of a foaming elastomer, and
a composite layer that is laminated on a front surface of the pad main body, the composite layer being a layer in which the foaming elastomer of the pad main body is impregnated into an expandable fiber sheet; wherein bubbles are formed in the composite layer by allowing the foaming elastomer impregnated into the expandable fiber sheet to foam; wherein the average value;
of cross-sectional area of the bubbles is 2,500 μm 2 to 40,000 μm 2 .

2. The electronic percussion pad according to claim 1 , wherein the foaming elastomer is foaming polyurethane.

3. The electronic percussion pad according to claim 2 , wherein a porosity of the composite layer is 30% to 80%.

4. The electronic percussion pad according to claim 2 , further comprising a resin coating layer that is disposed on a front surface of the fiber sheet or the composite layer.

5. The electronic percussion pad according to claim 2 , wherein the fiber sheet is a knitted material, a fineness of fiber of the knitted material is 140 dtex to 200 dtex, and a gauge of the knitted material is 50 G to 70 G.

6. The electronic percussion pad according to claim 1 , wherein a porosity of the composite layer is 30% to 80%.

7. The electronic percussion pad according to claim 1 , further comprising a resin coating layer that is disposed on a front surface of the fiber sheet or the composite layer.

8. The electronic percussion pad according to claim 1 , wherein the fiber sheet is a knitted material, a fineness of fiber of the knitted material is 140 dtex to 200 dtex, and a gauge of the knitted material is 50 G to 70 G.

Assignees

• Yamaha Corp

Inventors

• Miyata Tomoya

Classifications

• G10H3/00

  Instruments in which the tones are generated by electromechanical means · CPC title

• B29K2705/02

  Aluminium · CPC title

• B29C70/78 Primary

  Moulding material on one side only of the preformed part · CPC title

• B29C70/22

  oriented in at least two directions forming a two-dimensional [2D] structure · CPC title

• B29K2713/00

  Use of textile products or fabrics for preformed parts, e.g. for inserts (B29K2105/06 takes precedence) · CPC title