# US 8,785,756 B2 · Angle adjuster for music stand and keyboard instrument with angle adjuster

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- Number: US 8,785,756 B2
- Document ID: US8785756B2
- Status: Granted
- Kind: B2
- Application number: 13/905,319
- Filed: 2013-05-30
- Published: 2013-12-05
- Granted: 2014-07-22
- Earliest claimed: 2012-05-31
- Assignees: Kabushiki Kaisha Kawai Gakki Seisakusho
- Applicants: Kabushiki Kaisha Gakki Seisakusho
- Inventors: Naotaka Murozono
- Web page: https://patentgrep.com/patent/US8785756B2

## CPC

- G10C 3/12: Keyboards; Keys
- A47B 23/004: {Not free-standing music stands}
- G10G 7/00: Other auxiliary devices or accessories, e.g. conductors' batons or separate holders for resin or strings
- G10C: PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS (automatic musical instruments G10F)
- A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B)
- G10G: REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS (music stands A47B; non-musical aspects of musical toy instruments A63H5/00; metronomes G04F5/02; teaching music G09B15/00)

## Abstract

An angle adjuster for a music stand includes: a pair of thick portions having a thickness equivalent to a thickness of a two-fold hinge in a folded state and arranged to be mutually parallel; and an intermediate portion arranged between the pair of thick portions and recessed relative to upper surfaces of the thick portions perpendicular to a thickness direction thereof. The intermediate portion includes a plurality of catching portions provided mutually parallely along a longitudinal direction of the thick portions, each of the catching portions being configured to catch one end of a support bar to support the music stand.

## Claims

### Claim 1

An angle adjuster for a music stand, comprising:
a pair of thick portions having a thickness equivalent to a thickness of a two-fold hinge in a folded state and arranged to be mutually parallel; and
an intermediate portion arranged between the pair of thick portions and recessed relative to upper surfaces of the thick portions perpendicular to a thickness direction thereof,
wherein the intermediate portion includes a plurality of catching portions provided mutually parallely along a longitudinal direction of the thick portions, each of the catching portions being configured to catch one end of a support bar to support the music stand.

### Claim 2 (depends on 1)

The angle adjuster according to claim 1, wherein a depth of the recessed intermediate portion is equal to or greater than a thickness of the support bar.

### Claim 3 (depends on 1)

The angle adjuster according to claim 1, wherein the intermediate portion is configured to define a plurality of continuous wave shapes to form the plurality of catching portions.

### Claim 4 (depends on 1)

The angle adjuster according to claim 1, wherein the intermediate portion includes:
a guide portion that is provided at one end side of the intermediate portion along a longitudinal direction of the thick portion and adjacent to a catching portion forming area, where the plurality of catching portions are provided, to guide the one end of the support bar to the catching portion forming area.

### Claim 5 (depends on 1)

The angle adjuster according to claim 1, wherein the intermediate portion includes:
a protruding portion that protrudes from a lower end of the thick portions in the thickness direction thereof, the protruding portion having a positioning portion that, when the protruding portion is fitted in an insertion hole provided in a stand base to which the angle adjuster is attached, abuts a wall surface of the insertion hole and defines a position of the protruding portion in the insertion hole.

### Claim 6 (depends on 1)

The angle adjuster according to claim 1, wherein a peripheral area of each of the upper surfaces of the thick portions is chamfered into a curved surface shape.

### Claim 7 (depends on 1)

A keyboard instrument to which the angle adjuster according to claim 1 is attached, the keyboard instrument comprising:
the music stand;
a stand base relative to which the music stand is folded; and
the support bar to support the music stand,
wherein the angle adjuster is attached to the stand base,
the music stand is configured to be foldable with the hinge relative to the stand base, and
the support bar is configured to support the music stand by the one end of the support bar being caught by one of the catching portions, and is attached to one surface of the music stand reverse to a surface thereof facing a player in a foldable manner relative to the music stand.