Acoustic string instrument, and methods for manufacturing and repairing same

Patent metadata

Field	Value
Publication number	US-10789915-B2
Application number	US-201916510227-A
Country	US
Kind code	B2
Filing date	Jul 12, 2019
Priority date	Jan 16, 2017
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

An acoustic string instrument includes a top plate, a back plate, and a body disposed between the top plate and the back plate. The body has a plurality of first positioning portions. At least one of the top plate or the back plate, or both has a plurality of second positioning portions. The first positioning portions are fixed to the second positioning portions corresponding to the first positioning portions.

First claim

What is claimed is:

1. An acoustic string instrument comprising:
a top plate;
a back plate;
a body disposed between the top plate and the back plate and having a plurality of holes; and
a plurality of fixing members connecting the body to at least one of the top plate or the back plate, or both;
the at least one of the top plate or the back plate, or both having a plurality of blind holes on a body-side surface of the at least one of the top plate or the bottom plate, or both, the blind holes corresponding to the holes of the body, respectively,
each of the plurality of fixing members contacting each of the holes of the body and each of the blind holes.

2. The acoustic string instrument according claim 1 , wherein
each of the fixing members is a dowel, which is disposed in each of the holes of the body and each of the blind holes.

3. The acoustic string instrument according to claim 1 , wherein
the holes of the body are arranged bilaterally symmetrically with respect to a longitudinal center line of the body.

4. The acoustic string instrument according to claim 1 , wherein
one of the holes of the body is positioned on a first side of a longitudinal center line of the body, one of the holes of the body is positioned on a second side of the longitudinal center line of the body, one of the holes of the body is positioned not on a straight line that connects centers of the hole positioned on the first side and the hole positioned on the second side, and the first side is opposite to the second side.

5. The acoustic string instrument according to claim 2 , wherein
the top plate, the back plate, and the body are made of wood, and
surfaces of the plurality of dowels are made of resin or metal.

6. The acoustic string instrument according to claim 1 , wherein
at least one of the top plate or the back plate, or both further has a purfling disposed on an outer peripheral portion, and
the blind holes are formed on an inner side of the purfling.

7. A method for manufacturing an acoustic string instrument, the method comprising:
forming a plurality of holes on a body;
forming a plurality of blind holes which have a one-to-one correspondence with the holes of the body, on a body-side surface of at least one of a top plate or a bottom plate, or both, the at least one of the top plate or the bottom plate, or both having an outer peripheral edge that has been processed;
inserting a dowel into each of the holes of the body or into each of the blind holes;
applying an adhesive to at least one of the body-side surfaces or a surface of the body, or both; and
fixing the body to the at least one of the top plate or the back plate, or both by inserting the dowel projecting from the blind holes into the holes of the body, or by inserting the dowel projecting from the holes of the body into the blind holes.

8. A method for repairing an acoustic string instrument, the method comprising:
separating a body having a plurality of holes from at least one of a top plate or a back plate, or both having a plurality of blind holes, which have a one-to-one correspondence with the holes of the body and are formed on a body-side surface of the at least one of the top plate or the back plate, or both;
removing a plurality of dowels inserted into the holes of the body and the blind holes;
repairing at least one or more of the body, the top plate, or the back plate;
inserting a plurality of different dowels into the holes of the body, or into the blind holes;
applying an adhesive to at least one of the body-side surfaces or a surface of the body, or both; and
fixing the body to the at least one of the top plate or the back plate, or both by inserting the different dowels projecting from the blind holes into the holes of the body, or by inserting the different dowels projecting from the holes of the body into the blind holes.

Assignees

• Yamaha Corp

Inventors

• Soga Kazuki
• Yamazaki Toshihisa
• Yamauchi Yoshiro
• Matsushima Akio
• Nakaya Hiroshi

Classifications

• C07C17/386 Primary

  with auxiliary compounds · CPC title

• C07C51/12

  on an oxygen-containing group in organic compounds, e.g. alcohols · CPC title

• G10D1/02

  Bowed or rubbed string instruments, e.g. violins or hurdy-gurdies · CPC title

• C07C51/44 Primary

  by distillation · CPC title

• C07C45/80

  by liquid-liquid treatment · CPC title