JPH034077A - Check valve - Google Patents
Check valveInfo
- Publication number
- JPH034077A JPH034077A JP1137214A JP13721489A JPH034077A JP H034077 A JPH034077 A JP H034077A JP 1137214 A JP1137214 A JP 1137214A JP 13721489 A JP13721489 A JP 13721489A JP H034077 A JPH034077 A JP H034077A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- rubber
- valve seat
- hole
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000005062 Polybutadiene Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 229920003049 isoprene rubber Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 241000405070 Percophidae Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は逆止弁に関する。さらに詳しくは流体通路にお
ける一方向の流れを許容し、これと逆方向の流れを阻止
するという機能を有する弁に関する。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a check valve. More specifically, the present invention relates to a valve having the function of allowing flow in one direction in a fluid passage and blocking flow in the opposite direction.
〈従来の技術〉
逆止弁としては従来、第７図に示すような所謂アンブレ
ラタイプと称するものや、第８図に示すような所謂ダッ
クビルタイプと称するものなどが一般に使用されている
。<Prior Art> Conventionally, check valves commonly used include a so-called umbrella type as shown in FIG. 7 and a so-called duckbill type as shown in FIG.
アンブレラタイプの逆止弁は、性能も良く（反応が鋭敏
）使い易いが、部品点数が多く従って組立も複雑になる
ので大量生産には適しておらず、また中心で替止するよ
うになっているため小さなものを作り難く、たとえば最
も小さなものでも、傘径７閣、周辺の寸法的な余裕も含
めると内径１０噛くらいになってしまうので、小径を要
求される流体通路には使用できないという欠点を有して
いる。Umbrella type check valves have good performance (quick response) and are easy to use, but they have a large number of parts and are complicated to assemble, so they are not suitable for mass production. For example, even the smallest one has an umbrella diameter of 7 mm, and if you include the dimensional allowance around it, the inner diameter is about 10 mm, so it cannot be used for fluid passages that require a small diameter. It has its drawbacks.
一方ダツクビルタイプの逆止弁は、構造が間車で大量生
産には適しているが、スリット部分で洩れを生じ易い構
造であるため品質管理上問題があり、また洩れを回避し
ようとして肉厚を大きくするのは、小さな圧力に対する
反応が鈍くなるため好ましくない、さらにこのタイプの
逆止弁は負圧がかかった時に弁が変形するので、血液を
扱う場合などには、変形相当分の血液が逆流することが
あり、その結果血栓を生ずることがあり問題である。On the other hand, the Duckbill type check valve has an interlocking structure and is suitable for mass production, but the structure is prone to leakage at the slits, which poses problems in terms of quality control. Increasing the thickness is undesirable because it slows down the response to small pressures.Furthermore, this type of check valve deforms when negative pressure is applied, so when handling blood, etc., it is undesirable to increase the thickness. This is problematic because blood may flow backwards, resulting in blood clots.
尚、第７．８図において１４．１６は弁体、１５はパツ
キン、２３は弁座、９３．９４．１０３．１０４は流体
通路を構成する管体である。In Fig. 7.8, 14.16 is a valve body, 15 is a packing, 23 is a valve seat, and 93.94.103.104 is a pipe body constituting a fluid passage.
〈発明の解決しようとするｉＮ＞
本発明は上記の事情に鑑みて成されたもので、性能が良
くコンパクトであり、かつ製造も容易な大量生産に適し
だ逆止弁を提供することを目的とする。<iN to be solved by the invention> The present invention was made in view of the above-mentioned circumstances, and aims to provide a check valve that has good performance, is compact, is easy to manufacture, and is suitable for mass production. shall be.
〈課題を解決するための手段〉
本発明は上記の課題を解決するために、ゴム状弾性体か
らなる略偏平な弁体と、該弁体とｖ！着して配置され弁
体によって閉鎖される透光を有する板状の弁座とを具備
してなる弁であって、前記弁体が、該弁体を流体通路内
に該通路を遮断するように配置して支持するための支持
面を有する外側の支持部と、前記弁座の透光を閉鎖する
内側の弁部、および該弁部と支持部の間に介在して両者
を部分的に接続し且つ外力により容易に屈伸可能な肉薄
部からなり、前記弁座の透光が前記弁体の弁部によって
閉鎖されうるよう該弁部に対応する位置に形成されてな
る構成を採用している。<Means for Solving the Problems> In order to solve the above problems, the present invention provides a substantially flat valve body made of a rubber-like elastic body, and a v! A light-transmitting plate-shaped valve seat disposed on the valve body and closed by a valve body, the valve body including a plate-shaped valve seat that allows the valve body to enter a fluid passageway and block the passageway. an outer support part having a support surface for disposing and supporting the valve seat; an inner valve part for closing the light transmission of the valve seat; and an inner valve part interposed between the valve part and the support part to partially close both The valve seat is formed of a thin part that can be connected and easily bent and expanded by external force, and is formed at a position corresponding to the valve part of the valve body so that the light passing through the valve seat can be closed by the valve part of the valve body. There is.
く作用〉
上記構成によれば、弁座から弁体方向に流れる流体は、
弁座に設けられた透光に流入し、弁体の弁部を押圧して
弁部を流体の流れる方向に押し遺り、弁体と弁座の間に
隙間を形成する。従って流体はこの隙間を通って弁座か
ら弁体方向に流れ続ける。一方、弁体から弁座方向に流
れる流体は弁部を流体の流れる方向に押し遺り、弁部を
弁座に強く押しつける。従って流体は弁部によって遮断
されて弁体から弁座方向の流れが阻止される。According to the above configuration, the fluid flowing from the valve seat toward the valve body is
The liquid flows into the transparent light provided on the valve seat, presses the valve portion of the valve body, pushes the valve portion in the direction of fluid flow, and forms a gap between the valve body and the valve seat. Therefore, fluid continues to flow from the valve seat toward the valve body through this gap. On the other hand, the fluid flowing from the valve body toward the valve seat pushes the valve portion in the direction of fluid flow, strongly pressing the valve portion against the valve seat. Therefore, the fluid is blocked by the valve portion, and the flow from the valve body toward the valve seat is prevented.
〈実施例〉 次に本発明の実施例について図面に基づいて説明する。<Example> Next, embodiments of the present invention will be described based on the drawings.
第１図は本発明の一実施例に係る逆止弁の斜視図、第２
図は第１図のＸ−Ｘ線断面図であり、第３〜４図は本発
明の逆止弁を管体に取り付けた状態を示す説明図、第５
〜６図は他の実施例を示す説明図である。FIG. 1 is a perspective view of a check valve according to an embodiment of the present invention, and FIG.
The figure is a sectional view taken along the line X-X of FIG. 1, FIGS.
6 are explanatory diagrams showing other embodiments.
第１図および第２図に示すよ−５に、本発明の逆止弁は
、ゴム状弾性体からなるぼ略偏平な弁体（１）と、この
弁体（１）と密着して配置された板状の弁座（２）から
構成されており、弁座（２）には弁体（］）によって閉
鎖される透光（６）がｙ設されており、弁体（１）は外
側の支持部（４）と内側の弁部（３）および弁部（３）
と支持部（４）の間に介在し両者を部分的に接続する肉
薄部（５）からなっている。As shown in FIG. 1 and FIG. The valve seat (2) is provided with a transparent light (6) that is closed by the valve body (]), and the valve body (1) is Outer support part (4) and inner valve part (3) and valve part (3)
The thin part (5) is interposed between the support part (4) and the support part (4) and partially connects the two.
弁部（３）は弁座（２）の透光（６）を閉鎖するように
配置される弁体（１）の内側部分であり、肉薄部（５）
を介して部分的に支持部（４）と接続されている。弁部
（３）の形状は弁座（２）の透光（６）を閉鎖して透光
（６）を通る流体の流れを遮断できるものである限り特
に限定されないが、一般に緩やかな山型（第２図では理
解し易いように山型を誇張している）や平板状に形成さ
れる。またその肉厚は弁体のサイズにより異なるが特に
限定されるものではなく、最大肉厚部分で一般に０．５
〜５−程度である。The valve part (3) is the inner part of the valve body (1) arranged so as to close the light transmitting part (6) of the valve seat (2), and the thin part (5)
It is partially connected to the support part (4) via. The shape of the valve part (3) is not particularly limited as long as it can close the transparent light (6) of the valve seat (2) and block the flow of fluid through the transparent light (6), but it is generally a gentle chevron shape. (In Figure 2, the mountain shape is exaggerated for ease of understanding.) It is formed in the shape of a flat plate. In addition, the wall thickness varies depending on the size of the valve body, but is not particularly limited, and is generally 0.5 at the maximum wall thickness.
It is about 5-5.
支持部（４）は、弁体（１）を流体通路内に通路を遮断
するように配置したときに、通路を構成する管体（パイ
プに限定するものではなく、−ａに流体通路を有するも
の全てを意味する）内に弁体（１）を保持固定するため
の支持面を有する弁体（１）の外側部分であり、前記弁
部（３）とは肉薄部（５）を介して接続されている。支
持部（４）の形状は管体の内腔の形状に合わせて決めら
れるが、その肉厚は弁部（３）の最大肉厚と略等しい。When the valve body (1) is placed in the fluid passage so as to block the passage, the support part (4) is a pipe body (not limited to a pipe, but having a fluid passage in -a) that constitutes the passage. It is the outer part of the valve body (1) that has a support surface for holding and fixing the valve body (1) within the valve body (3), and is separated from the valve part (3) through the thin part (5). It is connected. The shape of the support part (4) is determined according to the shape of the inner cavity of the tube body, and its wall thickness is approximately equal to the maximum wall thickness of the valve part (3).
肉薄部（５）は前記の弁部（３）と支持部（４）の間に
介在された肉薄の部分であり、部分的に弁部（３）と支
持部（４）とを接続している。肉薄部（５）は第１図に
示すように左右何方か一方のみに設けても良いが、第６
図に示すように左右２か所に設けても、３か所以上設け
ても構わない、そして肉薄部（５）はゴム状弾性体で形
成された弁体の肉薄部分であるため外力により容易に屈
伸することができ、従って弁座（２）から弁体（１）方
向に流れる流体の流体圧によって弁部（３）が押された
時に、弁部（３）は流体の流れる方向に容易に開いて弁
座（２）から離れ、弁座（２）との間に隙間を生ずる。The thin part (5) is a thin part interposed between the valve part (3) and the support part (4), and partially connects the valve part (3) and the support part (4). There is. The thin part (5) may be provided only on either the left or right side as shown in FIG.
As shown in the figure, it may be provided in two places on the left and right, or it may be provided in three or more places, and since the thin part (5) is a thin part of the valve body formed of a rubber-like elastic body, it can be easily applied by external force. Therefore, when the valve part (3) is pushed by the fluid pressure of the fluid flowing from the valve seat (2) toward the valve body (1), the valve part (3) easily moves in the direction of the fluid flow. It opens and moves away from the valve seat (2), creating a gap between it and the valve seat (2).
肉薄部（５）の肉厚は一般に０．２ ｔｍ前後であり、
シリコーンゴムなど特殊な例を除き０．２ ｍ以下の肉
厚にするのは製造技術的に難しい。The thickness of the thin wall portion (5) is generally around 0.2 tm,
Except for special cases such as silicone rubber, it is difficult to achieve a thickness of 0.2 m or less due to manufacturing technology.
弁体（（１）の形成材料として用いられるゴム状弾性体
としては、天然ゴムやシリコーンゴム、ブタジェンゴム
、スチレン−ブタジェンゴム、イソプレンゴム、エチレ
ン−プロピレンゴム、ブチルゴム、クロロプレンゴム、
ニトリルゴム、アクリルゴム、ウレタンゴム、ふっ素ゴ
ムなどの合成ゴムがあるが、天然ゴムやシリコーンゴム
、ブタジェンゴム、インブレンゴムが性能およびコスト
の面から好ましい。The rubber-like elastic body used as the material for forming the valve body ((1)) includes natural rubber, silicone rubber, butadiene rubber, styrene-butadiene rubber, isoprene rubber, ethylene-propylene rubber, butyl rubber, chloroprene rubber,
Although there are synthetic rubbers such as nitrile rubber, acrylic rubber, urethane rubber, and fluorine rubber, natural rubber, silicone rubber, butadiene rubber, and inbrene rubber are preferable from the viewpoint of performance and cost.
弁座（２）は弁体（１）との密着面を有する板状の部材
であり、流体通路と連通ずる透光（６）を有しており、
弁体（１）と共に管体の内腔に取りつけられる。弁座（
２）に穿設される透光（６）の位置は、前記弁部（３）
によって完全に閉鎖され得るのであれば特に限定するも
のではないが、出来るだけ肉薄部（５）から離れた位置
が好ましく、特に第１図のように肉薄部（５）が左右何
方か一方のみに設けられている場合や、肉薄部（５）が
３か所以上設けられている場合には、一般に弁座（２）
の中央付近または弁部（３）の中心に対応した位置に決
められる。また第６図に示すように左右双方に肉薄部（
５１，５１）が設けられている場合には、例えば左右の
肉薄部（５１，５１）から等距離の位置に透光（６）を
２個設けてもよい、ｉ！光（６）の大きさも弁部（３）
の大きさによって規制される。透光（６）の個数は特に
限定されない。The valve seat (2) is a plate-shaped member having a surface in close contact with the valve body (1), and has a light transmitting hole (6) that communicates with the fluid passage.
It is attached to the inner cavity of the tube together with the valve body (1). valve seat(
The position of the transparent light (6) drilled in 2) is the same as that of the valve part (3).
Although there is no particular limitation as long as the thin part (5) can be completely closed by the In general, if the valve seat (2) is provided or if three or more thin wall portions (5) are provided,
or at a position corresponding to the center of the valve part (3). In addition, as shown in Figure 6, there are thin parts (
51, 51) are provided, for example, two light transmitting parts (6) may be provided at positions equidistant from the left and right thin parts (51, 51), i! The size of the light (6) also depends on the valve part (3)
regulated by the size of The number of light-transmitting elements (6) is not particularly limited.
この逆止弁を管体の流体通路に取りつける場合には、例
えば第３図に示すような、逆止弁を２つの管体（９，１
０）の端面（７，８）で挟持し接続部材（１３）で接続
する方法や、第４図に示すような、端部に段（８１）付
の雌ネジを有する管体（１０１）と端部に雄ネジを存す
る管体（９１）を用いて、逆止弁を管体（９］）の端面
と管体（１０１）の段部で挟むように螺合する方法、第
５図のように弁座（８２）が管体（１０２）と−体に形
成されているものでは、弁座（２２）と管体（９２）の
端面で弁体（１２）を挟持する方法などがある。When installing this check valve in a fluid passage of a pipe body, for example, as shown in FIG.
0), the end faces (7, 8) of the pipe are clamped and connected with the connecting member (13), or the pipe body (101) has a female thread with a step (81) at the end as shown in Fig. 4. A method of screwing a check valve between the end face of the pipe body (9]) and the stepped part of the pipe body (101) using a pipe body (91) having a male thread at the end, as shown in FIG. In the case where the valve seat (82) is formed between the pipe body (102) and the body, there is a method of sandwiching the valve body (12) between the end faces of the valve seat (22) and the pipe body (92). .
〈発明の効果〉
以上説明してきたことから明らかなように、本発明の逆
止弁は以下に示すような利点を有している。<Effects of the Invention> As is clear from the above explanation, the check valve of the present invention has the following advantages.
（１）アンブレラタイプの逆止弁と同等の性能を有して
いる上、部品が少ないので製造が容易であり、大量生産
に適している。(1) It has the same performance as an umbrella type check valve, and it is easy to manufacture because it has fewer parts, making it suitable for mass production.
（２）ダックビルタイプの逆止弁と同様傘径７鵬未満の
小さなものも製造可能であり、サイズ上の制限が少ない
。(2) Similar to duckbill type check valves, small ones with a diameter of less than 7 mm can be manufactured, and there are few restrictions on size.
第１図は本発明の一実施例に係る逆止弁の斜視図、第２
図は第１図のＸ−Ｘ線断面図であり、第３〜４図は本発
明の逆止弁を管体に取り付けた状態を示す説明図、第５
〜６図は他の実施例を示す説明図である。また、第７図
および第８図は従来例を示す図である。
〈主な符号の説明〉
１１
１．
１２．
１４．１６：弁体
２．
２１．
２２．２３：弁座
：弁部
：支持部
：肉薄部
：透光FIG. 1 is a perspective view of a check valve according to an embodiment of the present invention, and FIG.
The figure is a sectional view taken along the line X-X of FIG. 1, FIGS.
6 are explanatory diagrams showing other embodiments. Further, FIGS. 7 and 8 are diagrams showing conventional examples. <Explanation of main symbols> 11 1. 12. 14.16: Valve body 2. 21. 22.23: Valve seat: Valve part: Support part: Thin wall part: Transparent
Claims (1)
着して配置され弁体によって閉鎖される透光を有する板
状の弁座、とを具備してなる弁であって、 前記弁体が、該弁体を流体通路内に該通路を遮断するよ
うに配置して支持するための支持面を有する外側の支持
部と、前記弁座の透光を閉鎖する内側の弁部、および該
弁部と支持部の間に介在して両者を部分的に接続し且つ
外力により容易に屈伸可能な肉薄部からなり、 前記弁座の透光が、前記弁体の弁部によって閉鎖されう
るよう該弁部に対応する位置に形成されてなる逆止弁。 ２）弁座が流体通路を構成する管体と別体に形成されて
なる請求項１記載の逆止弁。 ３）弁座が流体通路を構成する管体と一体に形成されて
なる請求項１記載の逆止弁。 ４）ゴム状弾性体がシリコーンゴム、天然ゴム、ブタジ
エンゴム、イソプレンゴムの群から選択される１つであ
る請求項１ないレ３のいずれかに記載の逆止弁。[Scope of Claims] 1) A substantially flat valve body made of a rubber-like elastic body, and a transparent plate-shaped valve seat disposed in close contact with the valve body and closed by the valve body. A valve comprising: an outer support portion for disposing and supporting the valve body within a fluid passage so as to block the passage; and a light-transmitting portion of the valve seat. an inner valve portion that closes the valve seat, and a thin wall portion that is interposed between the valve portion and the support portion, partially connects the two, and can be easily bent and expanded by an external force; A check valve formed at a position corresponding to a valve part of a valve body so that it can be closed by the valve part. 2) The check valve according to claim 1, wherein the valve seat is formed separately from the pipe constituting the fluid passage. 3) The check valve according to claim 1, wherein the valve seat is formed integrally with a pipe constituting a fluid passage. 4) The check valve according to any one of claims 1 to 3, wherein the rubber-like elastic body is one selected from the group of silicone rubber, natural rubber, butadiene rubber, and isoprene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137214A JPH034077A (en) | 1989-05-30 | 1989-05-30 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137214A JPH034077A (en) | 1989-05-30 | 1989-05-30 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH034077A true JPH034077A (en) | 1991-01-10 |
Family
ID=15193458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1137214A Pending JPH034077A (en) | 1989-05-30 | 1989-05-30 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034077A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207819A (en) * | 1987-04-20 | 1993-05-04 | Agro-Kanesho Co., Ltd | Phenoxypropionic acid ester derivatives |
| JPWO2004016314A1 (en) * | 2002-08-13 | 2005-12-02 | 株式会社ジェイ・エム・エス | Fluid control device |
| US7488825B2 (en) | 2003-02-25 | 2009-02-10 | Kabushiki Kaisha Yakult Honsha | Method for preparing polymorphism of irinotecan hydrochloride |
| US7994186B2 (en) | 2005-04-18 | 2011-08-09 | Kabushiki Kaisha Yakult Honsha | Pharmaceutical compositions containing camptothecins |
| WO2012017547A1 (en) * | 2010-08-06 | 2012-02-09 | イーエヌ大塚製薬株式会社 | Check valve, three-way stopcock unit, and fluid substance transfer tool |
| JP2012159174A (en) * | 2011-02-02 | 2012-08-23 | Bridgestone Corp | Joint pipe |
| WO2019117028A1 (en) * | 2017-12-11 | 2019-06-20 | セイコーエプソン株式会社 | Duckbill valve, diaphragm pump, and printing device |
| JP2019105368A (en) * | 2017-12-11 | 2019-06-27 | セイコーエプソン株式会社 | Duckbill valve, diaphragm pump, and printer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106723U (en) * | 1974-01-25 | 1975-09-02 | ||
| JPS5940070A (en) * | 1982-08-31 | 1984-03-05 | Sumitomo Rubber Ind Ltd | Valve body of rubber for fuel supplying system |
| JPS63147998A (en) * | 1986-12-10 | 1988-06-20 | Matsushita Electric Ind Co Ltd | Pump |
-
1989
- 1989-05-30 JP JP1137214A patent/JPH034077A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106723U (en) * | 1974-01-25 | 1975-09-02 | ||
| JPS5940070A (en) * | 1982-08-31 | 1984-03-05 | Sumitomo Rubber Ind Ltd | Valve body of rubber for fuel supplying system |
| JPS63147998A (en) * | 1986-12-10 | 1988-06-20 | Matsushita Electric Ind Co Ltd | Pump |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207819A (en) * | 1987-04-20 | 1993-05-04 | Agro-Kanesho Co., Ltd | Phenoxypropionic acid ester derivatives |
| JPWO2004016314A1 (en) * | 2002-08-13 | 2005-12-02 | 株式会社ジェイ・エム・エス | Fluid control device |
| JP4520301B2 (en) * | 2002-08-13 | 2010-08-04 | 株式会社ジェイ・エム・エス | Fluid control device |
| US7488825B2 (en) | 2003-02-25 | 2009-02-10 | Kabushiki Kaisha Yakult Honsha | Method for preparing polymorphism of irinotecan hydrochloride |
| US7994186B2 (en) | 2005-04-18 | 2011-08-09 | Kabushiki Kaisha Yakult Honsha | Pharmaceutical compositions containing camptothecins |
| WO2012017547A1 (en) * | 2010-08-06 | 2012-02-09 | イーエヌ大塚製薬株式会社 | Check valve, three-way stopcock unit, and fluid substance transfer tool |
| JP2012159174A (en) * | 2011-02-02 | 2012-08-23 | Bridgestone Corp | Joint pipe |
| WO2019117028A1 (en) * | 2017-12-11 | 2019-06-20 | セイコーエプソン株式会社 | Duckbill valve, diaphragm pump, and printing device |
| JP2019105368A (en) * | 2017-12-11 | 2019-06-27 | セイコーエプソン株式会社 | Duckbill valve, diaphragm pump, and printer |
| CN111433497A (en) * | 2017-12-11 | 2020-07-17 | 精工爱普生株式会社 | Duckbill valve, diaphragm pump, and printing apparatus |
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