JP3184744U - Flat cajon - Google Patents

Flat cajon Download PDF

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JP3184744U
JP3184744U JP2013002456U JP2013002456U JP3184744U JP 3184744 U JP3184744 U JP 3184744U JP 2013002456 U JP2013002456 U JP 2013002456U JP 2013002456 U JP2013002456 U JP 2013002456U JP 3184744 U JP3184744 U JP 3184744U
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cajon
striking surface
sound
flat
touch
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正行 加藤
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正行 加藤
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Abstract

【課題】低音と高音とを効率よく分離でき、また、椅子に腰掛け又は座し膝上に載せて演奏する際、演奏し易い平型カホンを提供する。
【解決手段】打面となる上面板2と底面板3と前後左右の側面をなす側面板とからなり内部が浅底の空洞状に形成された楽器本体5を設け、該楽器本体5の打面を手で叩くことにより演奏する打楽器であって、打面2を少なくとも2つの領域に分割してなる。打面を低音部となる後部側の第1打面2aと、高音部及びタッチ部となる前部側の第2打面2bとに2分割し、第2打面の左右両端部を高音部となし、中央部をタッチ部となし、第2打面の裏面側に高音とタッチ音とを分離する仕切板10を固着する。
【選択図】図1
Provided is a flat cajon that can efficiently separate bass and treble, and is easy to play when sitting on a chair or sitting on a knee and performing.
A musical instrument main body 5 is provided which includes a top plate 2 and a bottom plate 3 serving as a striking surface and side plates which form the front, rear, left and right side surfaces, and the inside of which is formed in a shallow hollow shape. A percussion instrument that is played by tapping the surface by hand, and the hitting surface 2 is divided into at least two regions. The hitting surface is divided into a first hitting surface 2a on the rear side serving as a bass portion and a second hitting surface 2b on the front side serving as a treble portion and a touch portion, and left and right end portions of the second hitting surface are divided into treble portions. The partition plate 10 that separates the high sound and the touch sound is fixed to the back side of the second hitting surface.
[Selection] Figure 1

Description

本考案は、楽器本体の内部が空洞状に形成され、楽器本体の打面を手で叩いて演奏するカホンと称される打楽器、特に薄形の平型カホンに関する。   The present invention relates to a percussion instrument called a cajon, in particular, a thin flat cajon, in which the inside of a musical instrument main body is formed in a hollow shape and played by hitting the hitting surface of the musical instrument main body with a hand.

カホンは内部が空洞の箱状に形成され、演奏者がその上に跨がって打面を手で叩いてリズム演奏するものである(特許文献1)。打面の中央部を叩くと低音が、打面の周縁部を叩くと高音が発生する。叩き方により音色に変化を与えることもできる。
大きさは横幅30cm×奥行30cm×高さ45cm程度のものが一般的であるが、女性や老人にとっては跨ぐことや大き過ぎて扱い難く、持ち運びも大変である。このため、薄型とした平型タイプのものも出回っている。
The cajon is formed in a hollow box shape, and the performer straddles it and hits the hitting surface with his / her hand to perform a rhythm performance (Patent Document 1). When hitting the center of the hitting surface, a low tone is generated. When hitting the peripheral portion of the hitting surface, a high tone is generated. You can also change the tone depending on how you strike.
The size is generally about 30 cm wide x 30 cm deep x 45 cm high, but it is difficult for women and elderly people to straddle and be too big to carry. For this reason, a thin flat type is also on the market.

しかし、平型タイプのものは、内容積が小さくなるため、高音域と低音域での音の分離が悪くメリハリが十分でない。また、平型タイプのものも、図11に示すように、打面の中央部が低音部7、手前側の左右角部が高音部8,8、手前側の中央部がタッチ部9となっている。このため、椅子に腰掛け膝の上にカホンを載せて演奏する際、高音部8とタッチ部9が手前にきて、窮屈となって演奏し難い。   However, since the internal volume of the flat type is small, sound separation between the high sound range and the low sound range is poor and the sharpness is not sufficient. Further, in the flat type, as shown in FIG. 11, the center portion of the hitting surface is the bass portion 7, the left and right corner portions on the front side are the high sound portions 8 and 8, and the center portion on the near side is the touch portion 9. ing. For this reason, when a performance is performed with a cajon placed on a chair on a chair, the treble portion 8 and the touch portion 9 come to the front, and it is difficult to perform due to cramping.

特開2005−266732号公報JP 2005-266732 A

そこで、本考案は、低音と高音とを効率よく分離でき、また、椅子に腰掛け又は座し膝上に載せて演奏する際、演奏し易い平型カホンを提供することを目的とする。   Accordingly, an object of the present invention is to provide a flat cajon that can efficiently separate bass and treble, and that is easy to play when sitting on a chair or sitting on a knee and performing.

上記の課題を解決するために、請求項1に係る考案は、打面となる上面板と底面板と前後左右の側面をなす側面板とからなり内部が浅底の空洞状に形成された楽器本体を設け、該楽器本体の打面を手で叩くことにより演奏する打楽器であって、打面を少なくとも2つの領域に分割してなること、を特徴としている。
請求項2に係る考案は、打面を低音部となる後部側の第1打面と、高音部及びタッチ部となる前部側の第2打面とに2分割し、前記第2打面の後端側の左右両端部を高音部となし、後端側の中央部をタッチ部となし、前記第2打面の裏面側に高音とタッチ音とを分離する仕切板を固着したものである。
請求項3に係る考案は、高音部の裏面側に金属板を固着したものである。
請求項4に係る考案は、高音部の裏面側にバネ材を配置したものである。
In order to solve the above-mentioned problem, the device according to claim 1 is a musical instrument having an inner surface formed of a shallow bottom, which is composed of a top plate and a bottom plate that form a striking surface, and a side plate that forms front, rear, left, and right side surfaces. A percussion instrument that is provided with a main body and that is played by tapping the hitting surface of the instrument main body with a hand, the hitting surface being divided into at least two regions.
The device according to claim 2 divides the striking surface into two parts, a first striking surface on the rear side serving as a bass part and a second striking surface on the front side serving as a treble part and a touch part, and the second striking surface. The left and right end portions on the rear end side are formed as high sound portions, the center portion on the rear end side is formed as a touch portion, and a partition plate for separating high sounds and touch sounds is fixed to the back side of the second striking surface. is there.
The device according to claim 3 is one in which a metal plate is fixed to the back surface side of the treble portion.
According to the fourth aspect of the present invention, a spring material is disposed on the back surface side of the treble portion.

請求項1に係る考案は、楽器本体の打面を少なくとも2つの領域に分割してなるので、低音と高音とを効率よく分離できる。
請求項2に係る考案は、打面を低音部となる後部側の第1打面と、高音部及びタッチ部となる前部側の第2打面とに2分割したので、低音と高音とを確実に分離できる。また、第2打面の裏面側に高音とタッチ音とを分離する仕切板を固着したので、仕切板で打面の振動を調整し高音とタッチ音とを分離でき、仕切板が第2打面をなす上面板のそりを防止できる。また、第2打面の後端側の左右両端部を高音部となし、後端側の中央部をタッチ部となしたので、椅子に掛け又は座し膝の上にカホンを載せて演奏する際、手が窮屈にならず演奏し易い。
請求項3に係る考案は、高音部の裏面側に金属板を固着したので、より高い音を出すことができる。
請求項4に係る考案は、高音部の裏面側にバネ材を配置したので、長期の使用によっても、高音部の裏面側に隙間を保持でき、長期の使用に耐える。
Since the device according to claim 1 divides the hitting surface of the musical instrument main body into at least two regions, it is possible to efficiently separate the low sound and the high sound.
The invention according to claim 2 divides the hitting surface into a first hitting surface on the rear side serving as a bass portion and a second hitting surface on the front side serving as a treble portion and a touch portion. Can be reliably separated. In addition, since the partition plate that separates the high sound and touch sound is fixed to the back side of the second striking surface, the partition plate can adjust the vibration of the striking surface to separate the high sound and the touch sound. It is possible to prevent warping of the upper surface plate forming the surface. In addition, the left and right ends on the rear end side of the second striking surface are high-pitched parts, and the center part on the rear end side is the touch part, so that the player can hang or sit on the chair and place the cajon on the knee. When playing, it is easy to play without being cramped.
Since the metal plate was fixed to the back side of the high-pitched sound part, the higher sound can be produced.
In the device according to claim 4, since the spring material is arranged on the back side of the high sound part, a gap can be held on the back side of the high sound part even with long-term use, and it can withstand long-term use.

本考案の第1実施例によるカホンを示す斜視図である。1 is a perspective view showing a cajon according to a first embodiment of the present invention. 第1実施例によるカホンの平面図である。It is a top view of the cajon by 1st Example. 第1実施例によるカホンの左側面図である。It is a left view of the cajon by 1st Example. 図2のIV−IV断面図である。It is IV-IV sectional drawing of FIG. 図2のV−V断面図である。It is VV sectional drawing of FIG. 第1実施例の変形例を示す平面図である。It is a top view which shows the modification of 1st Example. 図6のVII−VII断面図である。It is VII-VII sectional drawing of FIG. 本考案の実施例によるカホンの叩き位置を示す平面図である。It is a top view which shows the hit position of the cajon by the Example of this invention. 本考案の第2実施例を示す平面図である。It is a top view which shows 2nd Example of this invention. 本考案の第3実施例を示す平面図である。It is a top view which shows 3rd Example of this invention. 従来例によるカホンの叩き位置を示す平面図である。It is a top view which shows the hit position of the cajon by a prior art example.

以下、本考案の実施例を図面に基づいて具体的に説明する。図1〜図5に示す第1実施例による平型カホン1は、打面となる上面板2と、底面板3と、前後左右の側面をなす4つの側面板4a,4b,4c,4dとからなり、内部が浅底の空洞状に形成された楽器本体5を設け、楽器本体5の打面2a,2bを手で叩くことによりリズム演奏する打楽器である。   Embodiments of the present invention will be specifically described below with reference to the drawings. A flat cajon 1 according to the first embodiment shown in FIGS. 1 to 5 includes an upper surface plate 2 serving as a hitting surface, a bottom surface plate 3, and four side plates 4a, 4b, 4c, and 4d that form front, rear, left and right side surfaces. This is a percussion instrument that has a musical instrument main body 5 that is formed in a hollow shape with a shallow bottom and performs a rhythm performance by tapping the hitting surfaces 2a and 2b of the musical instrument main body 5 by hand.

そして、打面をなす上面板2は後部側の第1打面2aと前部側の第2打面2bとの2つに分割してなる。第1打面2aと第2打面2bとの境界部には僅かの隙間6が形成される。第1打面2aはその中央部が低音部7をなし、第2打面2bは後端側の左右両端部(左右両角部)が高音部8,8、後端側の中央部がタッチ部9をなす。本明細書では、後端側とは図8の第2打面2bにおいて上縁側(隙間6側)をいう。   The top plate 2 forming the striking surface is divided into two parts, a first striking surface 2a on the rear side and a second striking surface 2b on the front side. A slight gap 6 is formed at the boundary between the first striking surface 2a and the second striking surface 2b. The first hitting surface 2a has a low-pitched portion 7 at the center thereof, the second hitting surface 2b has high-pitched sound portions 8 and 8 at both left and right end portions (left and right corner portions) on the rear end side, and the central portion on the rear end side is a touch portion. Make a 9. In this specification, the rear end side means the upper edge side (gap 6 side) in the second striking surface 2b of FIG.

寸法の一例としては、横幅Wが35cm、奥行Lが25cm、高さHが8cm程度である。打面となる上面板2(2a,2b)は、響きをよくするため他の面板より薄くする。本実施例では、上面板2(2a,2b)の厚さは3mm、底面板3の厚さは4mm、側面板4a〜4dの厚さは10mm程度とする。なお、ここで示した寸法は一例であって、適宜変更可能であることは勿論である。各面板の材質は、一般には木質材(単板又は合板)であるが、合成樹脂材を用いてもよい。   As an example of the dimensions, the width W is 35 cm, the depth L is 25 cm, and the height H is about 8 cm. The upper surface plate 2 (2a, 2b) serving as the striking surface is made thinner than the other surface plates in order to improve the sound. In the present embodiment, the top plate 2 (2a, 2b) has a thickness of 3 mm, the bottom plate 3 has a thickness of 4 mm, and the side plates 4a to 4d have a thickness of about 10 mm. In addition, the dimension shown here is an example, Comprising: Of course, it can change suitably. The material of each face plate is generally a wood material (single plate or plywood), but a synthetic resin material may be used.

第2打面2bの裏面側には、高音部8とタッチ部9との間を仕切る仕切板10,10を、前後方向に向けて並列に2枚固着してある。この仕切板10の厚さは10mm程度、高さは空洞内部の高さと略同じ、前後幅は第2打面2bの内部前後幅に略対応させてある。   On the back surface side of the second striking surface 2b, two partition plates 10 and 10 for partitioning between the high sound portion 8 and the touch portion 9 are fixed in parallel in the front-rear direction. The partition plate 10 has a thickness of about 10 mm, a height that is substantially the same as the height inside the cavity, and a front-rear width that substantially corresponds to the inner front-rear width of the second striking surface 2b.

高音部8の裏面側であって左右側面板4c,4dの上端面に対面する位置に金属製(鉄製)の板材11を固着してある。そして、高音部8の裏面側の鉄製板材11と左右側面板4c,4dの上端面との間には僅かの隙間12を保持するようにしてある。この隙間12を保持するため、この隙間部を除く側面板4a〜4dの上端面の上に厚さの薄いスペーサ13を介在させてある。又は、スペーサ13を介在させるのではなく、高音部に対面する左右側面板4c,4dの上端面を切欠いて隙間12を形成するようにしてもよい。   A metal (iron) plate 11 is fixed to a position on the back side of the high-pitched sound portion 8 and facing the upper end surfaces of the left and right side plates 4c and 4d. A slight gap 12 is held between the iron plate 11 on the back side of the high-pitched sound portion 8 and the upper end surfaces of the left and right side plates 4c and 4d. In order to hold the gap 12, a thin spacer 13 is interposed on the upper end surfaces of the side plates 4a to 4d excluding the gap. Alternatively, the gaps 12 may be formed by notching the upper end surfaces of the left and right side plates 4c, 4d facing the treble portion, instead of interposing the spacers 13.

なお、持ち運びし易いようにするため、前部側の側面板4aに仮想線で示すように把手14を取付けるようにしてもよい。また、底面板3又は側面板4a〜4dの1つに共鳴用の穴を開口形成するようにしてもよい。符号15は、上面板2(2a,2b)と側面板4a〜4dとを結合する皿木ねじである。   In addition, in order to make it easy to carry, the handle 14 may be attached to the side plate 4a on the front side as indicated by a virtual line. Further, a resonance hole may be formed in one of the bottom plate 3 or the side plates 4a to 4d. Reference numeral 15 denotes a countersunk screw that couples the top plate 2 (2a, 2b) and the side plates 4a to 4d.

第1打面2aの裏面側には図に示すような小さなシンバル16を取付けてある。小さなシンバル16に替えて鈴を取付けてもよい。又は、第1打面2aの裏面側に線材を、例えば左右方向に張設するようにしてもよい。
また、図6,図7に示すように、左右の高音部8の裏面側にコイルバネ17を取付けて、高音部8の板材2bを押し上げ、高音部8と左右側面板4c,4dの上端面との間の隙間12を長期に亙り確保するようにしてもよい。
A small cymbal 16 as shown in the figure is attached to the back side of the first striking surface 2a. A bell may be attached instead of the small cymbal 16. Alternatively, a wire rod may be stretched in the left-right direction, for example, on the back surface side of the first striking surface 2a.
Also, as shown in FIGS. 6 and 7, a coil spring 17 is attached to the back side of the left and right treble portions 8, and the plate material 2b of the treble portion 8 is pushed up, and the upper end surface of the treble portion 8 and the left and right side plates 4c, 4d The gap 12 may be secured over a long period.

かかる構造の平型カホン1を演奏するには、椅子に腰掛け又は座し膝の上に平型カホンを、第1打面2aが膝側、第2打面2bが手前側となるように載せる。そして、手で低音部7、高音部8又はタッチ部9を叩くことにより、リズム演奏する。又は、テーブルや机の上に平型カホン1を載せ、演奏するようにしてもよい。
このとき、第1打面2aと第2打面2bとの間は上面板2が2分割されているので、第1打面2aの振動と第2打面2bの振動とは互いに分離され、影響を受けない。このため、低音と、高音又はタッチ音との分離が確実に行えることになり、メリハリの効いた演奏をすることができる。なお、打面2a,2bを叩く部位や叩き方(手の平全体で叩いたり、指先で叩いたり)によって、音色に変化を与えることができる。
第2打面2bにおける高音部8とタッチ部9は、第2打面2bの後端側にあるので(図8)、膝の上に載せて演奏する場合でも、手が窮屈とならず、演奏し易い。
To play the flat cajon 1 having such a structure, the user sits on a chair or sits on the chair and places the flat cajon on the knee so that the first striking surface 2a is on the knee side and the second striking surface 2b is on the near side. . Then, a rhythm performance is performed by hitting the bass part 7, the treble part 8, or the touch part 9 with a hand. Alternatively, the flat cajon 1 may be placed on a table or desk and played.
At this time, since the top plate 2 is divided into two between the first striking surface 2a and the second striking surface 2b, the vibration of the first striking surface 2a and the vibration of the second striking surface 2b are separated from each other, Not affected. For this reason, a low tone and a high tone or a touch sound can be reliably separated, and a sharp performance can be performed. Note that the timbre can be changed depending on the part where the hitting surfaces 2a and 2b are hit and how to hit them (whether hitting with the entire palm or hitting with the fingertips).
Since the high pitched part 8 and the touch part 9 on the second striking surface 2b are on the rear end side of the second striking surface 2b (FIG. 8), even when playing on the knee, the hand is not cramped, Easy to play.

第2打面2bは高音部8とタッチ部9との間に仕切板10が介在しているので、高音とタッチ音との分離が明確となる。また、この仕切板10が第2打面2bを構成する上面板に固着されているので、第2打面2bを構成する上面板のそりを防止する効果もある。   Since the second striking surface 2b has the partition plate 10 interposed between the high-pitched sound part 8 and the touch part 9, the separation between the high-pitched sound and the touch sound becomes clear. In addition, since the partition plate 10 is fixed to the upper surface plate constituting the second striking surface 2b, there is also an effect of preventing warpage of the upper surface plate constituting the second striking surface 2b.

高音部8の裏面側には、左右側面板4c,4dの上端面との間に僅かの隙間12を有するので、高音部8を手で叩いた際に「パシッ」という音を出すことができる。
高音部8を叩くと、高音部8の裏面側に固着した鉄製の板材11が左右側面板4c,4dの上端面に当たり、より高い音を出すことができる。
低音部7の裏面側に小さなシンバル16を取付けておけば、低音部7を叩いた際にシンバル16の音色も相まって変化のある音を発生させることができる。
Since there is a slight gap 12 between the upper surface of the left and right side plates 4c, 4d on the back side of the high sound part 8, a sound of "passing" can be produced when the high sound part 8 is tapped by hand. .
When the treble portion 8 is hit, the iron plate material 11 fixed to the back side of the treble portion 8 hits the upper end surfaces of the left and right side plates 4c and 4d, and a higher sound can be produced.
If a small cymbal 16 is attached to the back side of the bass part 7, it is possible to generate a sound that varies with the tone of the cymbal 16 when the bass part 7 is hit.

図9に示す第2実施例による平型カホン1−2は、第1実施例と同様に打面を第1打面2aと第2打面2bとに分割し、さらに第2打面2bを左右方向に3分割して、左右両側2b−1,2b−3を高音部8、中央部2b−2をタッチ部9となしたものである。この場合、高音部8とタッチ部9とが分割されているので、高音とタッチ音との分離がさらに確実となる。   As in the first embodiment, the flat cajon 1-2 according to the second embodiment shown in FIG. 9 divides the hitting surface into a first hitting surface 2a and a second hitting surface 2b, and the second hitting surface 2b is further divided. The left and right sides 2b-1 and 2b-3 are divided into three in the left and right direction, and the high pitched part 8 and the center part 2b-2 are the touch part 9. In this case, since the high sound part 8 and the touch part 9 are divided, the high sound and the touch sound are further reliably separated.

図10に示す第3実施例による平型カホン1−3は、上面板2の手前側中央部を逆U字状に分割したもので、逆U字状の内側がタッチ部9、手前側の左右角部が高音部8,8、後部側の中央部が低音部7となる。この場合、高音部8が手前側の左右角部となるため、演奏がし難くくなる欠点がある。   The flat cajon 1-3 according to the third embodiment shown in FIG. 10 is obtained by dividing the front side central portion of the top plate 2 into an inverted U shape, and the inner side of the inverted U shape is the touch portion 9 and the front side. The left and right corners are the high sound parts 8 and 8, and the central part on the rear side is the low sound part 7. In this case, the treble part 8 is the left and right corners on the front side, which makes it difficult to perform.

1,1−2,1−3 平型カホン
2 上面板
2a 第1打面
2b 第2打面
2b−1,2b−2,2b−3 第2打面
3 底面板
4a,4b,4c,4d 側面板
5 楽器本体
6 隙間
7 低音部
8 高音部
9 タッチ部
10 仕切板
11 鉄製板材
12 隙間
13 スペーサ
14 把手
15 皿木ねじ
16 シンバル
17 コイルバネ
1, 1-2, 1-3 Flat cajon 2 Top plate 2a First striking surface 2b Second striking surface 2b-1, 2b-2, 2b-3 Second striking surface 3 Bottom plate 4a, 4b, 4c, 4d Side plate 5 Musical instrument body 6 Gap 7 Low tone part 8 High tone part 9 Touch part 10 Partition plate 11 Iron plate material 12 Gap 13 Spacer 14 Handle 15 Countersunk screw 16 Cymbal 17 Coil spring

Claims (4)

打面となる上面板と底面板と前後左右の側面をなす側面板とからなり内部が浅底の空洞状に形成された楽器本体を設け、該楽器本体の打面を手で叩くことにより演奏する打楽器であって、打面を少なくとも2つの領域に分割してなることを特徴とする平型カホン。   A musical instrument main body that is composed of a top plate, bottom plate, and side plates that form the front, back, left, and right sides of the striking surface is provided. A flat cajon characterized in that the percussion surface is divided into at least two regions. 打面を低音部となる後部側の第1打面と、高音部及びタッチ部となる前部側の第2打面とに2分割し、前記第2打面の後端側の左右両端部を高音部となし、後端側の中央部をタッチ部となし、前記第2打面の裏面側に高音とタッチ音とを分離する仕切板を固着してなる請求項1に記載の平型カホン。   The striking surface is divided into a first striking surface on the rear side serving as a bass portion and a second striking surface on the front portion serving as a treble portion and a touch portion, and left and right end portions on the rear end side of the second striking surface. 2. The flat type according to claim 1, wherein the flat portion is formed as a high sound portion, a central portion on the rear end side is formed as a touch portion, and a partition plate for separating high sound and touch sound is fixed to the back surface side of the second hitting surface. Cajon. 高音部の裏面側に金属板を固着してなる請求項2に記載の平型カホン。   The flat cajon according to claim 2, wherein a metal plate is fixed to the back side of the treble portion. 高音部の裏面側にバネ材を配置してなる請求項2又は3に記載の平型カホン。   The flat cajon according to claim 2 or 3, wherein a spring material is disposed on the back side of the high-pitched sound part.
JP2013002456U 2013-05-02 2013-05-02 Flat cajon Expired - Fee Related JP3184744U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140373699A1 (en) * 2012-01-30 2014-12-25 Pitch Slap Percussion Llc Percussion instrument with interior porting
US20150114206A1 (en) * 2013-10-25 2015-04-30 Andrzej Krol Snare Cajon Instrument
US9343050B2 (en) 2010-03-04 2016-05-17 Drum Workshop, Inc. Channeled shaker
US10249272B2 (en) 2017-01-17 2019-04-02 Drum Workshop, Inc. Percussion instrument with adjustable auxiliary device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9343050B2 (en) 2010-03-04 2016-05-17 Drum Workshop, Inc. Channeled shaker
US20140373699A1 (en) * 2012-01-30 2014-12-25 Pitch Slap Percussion Llc Percussion instrument with interior porting
US9208760B2 (en) * 2012-01-30 2015-12-08 Pitch Slap Percussion Llc Percussion instrument with interior porting
US20150114206A1 (en) * 2013-10-25 2015-04-30 Andrzej Krol Snare Cajon Instrument
US9466273B2 (en) * 2013-10-25 2016-10-11 Drum Workshop, Inc. Snare cajón instrument
US10249272B2 (en) 2017-01-17 2019-04-02 Drum Workshop, Inc. Percussion instrument with adjustable auxiliary device

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