Patent ID: 6284958
Filing Date: 2001-09-04
Classification: G10D

Abstract:
A tone hole pad of a wind instrument for opening and closing a tone hole which has a shape, comprising:a circular metallic base, wherein said metallic base hasa center,a hole formed at said center of said metallic base and having a hole diameter,a flat surface having an inner peripheral portion and an outer peripheral portion,a rising wall portion formed around said outer peripheral portion of said flat surface, wherein said rising wall portion has an inside diameter larger than the tone hole and said rising wall portion has an outer peripheral face,a ring-shaped concave portion formed in said metallic base having an outside diameter inside said rising wall portion, an inside diameter smaller than the tone hole, a width, and a depth,a flat rear surface having an inner peripheral portion,a ring-shaped convex portion formed at said inner peripheral portion of said flat rear portion, wherein said ring-shaped convex portion has an outside diameter, andan outer diameter;an elastic flat circular resin plate provided inside said metallic base, wherein said resin plate hasa center,a hole formed in said center of said resin plate, wherein said hole of said resin plate has a hole diameter equal to said hole diameter of said metallic base,an outer diameter substantially equal to said inside diameter of said of rising wall portion of said metallic base, anda rear face fitted to said flat surface of said metallic base to cover said flat surface, wherein said resin plate is elastic to absorb shock when said resin plate is deformed in order to conform to the shape of the tone hole when closed;a space portion formed between said resin plate and said concave portion of said metallic base, wherein said space portion allows for deformation of said resin plate;a circular fiber body provided inside said metallic base, wherein said fiber body hasa centera hole formed in said center of said fiber body, wherein said hole of said fiber body has a hole diameter equal to said hole diameter of said resin plate,an outer diameter substantially equal to said inside diameter of said of rising wall portion of said metallic base, anda rear face fitted to said resin plate;a circular mount paper fitted to said flat rear surface of said metallic base, wherein said mount paper hasa center,a hole formed in said center of said mount paper, wherein said hole of said mount paper has a hole diameter equal to said outside diameter of said ring-shaped convex portion of said metallic base, wherein said ring-shaped convex portion maintains said center of said mount paper in position,an outer diameter substantially equal to said outer diameter of said metallic base, anda rear sure away from said metallic base; anda pad skin glued to said rear surface of said mount paper, wherein said pad skin hasa center, anda hole formed in said center of said pad skin, wherein said hole of said pad skin has a hole diameter substantially equal to said hole diameter of said fiber body, wherein said pad skin is wrapped around said fiber body, said resin plate, said metallic base, and said mount paper in order to hold a predetermined shape so as to maintain a uniform tension in said pad skin.