JPH0713782Y2 - Carbon dioxide canister - Google Patents
Carbon dioxide canisterInfo
- Publication number
- JPH0713782Y2 JPH0713782Y2 JP9480188U JP9480188U JPH0713782Y2 JP H0713782 Y2 JPH0713782 Y2 JP H0713782Y2 JP 9480188 U JP9480188 U JP 9480188U JP 9480188 U JP9480188 U JP 9480188U JP H0713782 Y2 JPH0713782 Y2 JP H0713782Y2
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- water
- canister
- absorbent
- cartridge
- 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.)
- Expired - Lifetime
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 134
- 239000001569 carbon dioxide Substances 0.000 title claims description 67
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000002250 absorbent Substances 0.000 claims description 22
- 230000002745 absorbent Effects 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 18
- 238000010521 absorption reaction Methods 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 230000029058 respiratory gaseous exchange Effects 0.000 description 10
- 230000009189 diving Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010038687 Respiratory distress Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、潜水等に用いられる閉式呼吸装置使用時にお
ける、呼気ガス中の二酸化炭素を吸収するための二酸化
炭素キャニスタに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a carbon dioxide canister for absorbing carbon dioxide in exhaled gas when a closed breathing apparatus used for diving or the like is used.
［従来の技術］ 従来より、潜水用の閉式呼吸装置には、呼気ガス中の二
酸化炭素を吸収するための二酸化炭素キャニスタが内蔵
されており、本出願人が先に出願した実願昭63−5543号
に記載の呼吸装置に内蔵された二酸化炭素キャニスタが
ある。第４図および第５図は、この二酸化炭素キャニス
タ51を示すものであり、まず、輪状管路52を経由してき
た呼気ガスは、流入口53から下部容器54の一方の室55に
入れ、多数の拡散フィン56によって室内に均一に分散さ
れる。室55内で均一に分散された呼気ガスは室55状の二
酸化炭素ガス吸収剤層57を通り抜け、ダイヤフラム58内
に入り、室59上の二酸化炭素吸収剤層57を通り、室59内
に流入する。このようにして、二酸化炭素ガスを除去さ
れるとともに、室59内に入った呼気ガスは、拡散フィン
56によって逆に流出口60の向って集められ、輪状管路61
中に導かれて、呼吸室にむかって流れるようになってい
る。このような二酸化炭素キャニスタにあっては、輪状
管路を通過した呼気ガスが、均一に分散した状態で二酸
化炭素吸収剤層中を通るため、二酸化炭素吸収剤層の厚
みを薄くすることができ、この結果、呼気ガスが通過す
る速度が向上するという特徴を有している。[Prior Art] Conventionally, a closed breathing apparatus for diving has a built-in carbon dioxide canister for absorbing carbon dioxide in exhaled gas. There is a carbon dioxide canister built into the breathing apparatus described in 5543. FIG. 4 and FIG. 5 show this carbon dioxide canister 51. First, the exhaled gas that has passed through the annular pipe 52 is introduced into the one chamber 55 of the lower container 54 from the inflow port 53, The diffusion fins 56 are uniformly dispersed in the room. The exhaled gas that is uniformly dispersed in the chamber 55 passes through the carbon dioxide gas absorbent layer 57 in the chamber 55, enters the diaphragm 58, passes through the carbon dioxide absorbent layer 57 on the chamber 59, and flows into the chamber 59. To do. In this way, the carbon dioxide gas is removed and the exhaled gas that has entered the chamber 59 is
Reversely collected by 56 towards outlet 60, ring-shaped conduit 61
It is guided inside and flows toward the breathing room. In such a carbon dioxide canister, since the exhaled gas that has passed through the ring-shaped conduit passes through the carbon dioxide absorbent layer in a uniformly dispersed state, it is possible to reduce the thickness of the carbon dioxide absorbent layer. As a result, there is a feature that the speed at which the exhaled gas passes increases.
［考案が解決しようとする課題］ しかしながら、上述した二酸化炭素キャニスタにあって
は、高性能である反面、構造が複雑なため、大掛かりな
キャニスタとなり、また種々の部品が必要であることか
ら高価になりがちであるという欠点があった。また、万
一、二酸化炭素キャニスタに水が流入した場合、二酸化
炭素吸収剤が吸湿、吸水して呼吸抵抗が上昇し、さらに
は二酸化炭素吸収剤からアルカリ性水が発生するといっ
た恐れがあった。[Problems to be Solved by the Invention] However, although the carbon dioxide canister described above has high performance, it is a large-scale canister due to its complicated structure, and is expensive because various parts are required. It had the drawback of tending to be. Further, in the unlikely event that water flows into the carbon dioxide canister, the carbon dioxide absorbent may absorb and absorb water to increase breathing resistance, and further the carbon dioxide absorbent may generate alkaline water.
よって本考案では、閉式呼吸装置を使用して安全に潜水
することができる、軽量、小型で高性能を有する二酸化
炭素キャニスタを提供することを目的とする。Therefore, it is an object of the present invention to provide a light-weight, small-sized, high-performance carbon dioxide canister that can be safely dived using a closed breathing apparatus.
［課題を解決するための手段］ 二酸化炭素吸収部が一対の吸水性フィルタで挾装させて
なる二酸化炭素吸収カートリッジと、この二酸化炭素吸
収カートリッジの外周壁に設けられた吸水部材とから、
二酸化炭素キャニスタを形成したことを、その解決手段
とした。[Means for Solving the Problems] From a carbon dioxide absorbing cartridge in which a carbon dioxide absorbing portion is sandwiched by a pair of water absorbing filters, and a water absorbing member provided on an outer peripheral wall of the carbon dioxide absorbing cartridge,
Forming a carbon dioxide canister was the solution.
［作用］ 二酸化炭素吸収部が一対の吸水性フィルタで挾装され、
さらにこれらが吸水部材で巻装されているため、水分が
遮断され、強アルカリ性化合物からなる二酸化炭素吸収
剤の性能を維持することが可能となり、かつ安全性の信
頼度も向上する。[Operation] The carbon dioxide absorption part is equipped with a pair of water absorbing filters,
Further, since these are wound around the water absorbing member, water is blocked, the performance of the carbon dioxide absorbent made of a strongly alkaline compound can be maintained, and the reliability of safety is improved.
［実施例］ 第１図は、本考案における二酸化炭素キャニスタの断面
図であり、図中符号１は二酸化炭素キャニスタケースで
ある。このケース１は、一対の概略中空円柱状からなる
部材を液密に螺合してなるものであり、その内周壁に
は、二酸化炭素吸収カートリッジ２を支持する突部３、
３が形成されている。この二酸化炭素吸収カートリッジ
２は、両端円周部を一部残した中空円柱状であり、その
内部には、一対の吸水性フィルタ４、４に嵌装された二
酸化炭素吸収部５が収納されている。また、前記二酸化
炭素吸収カートリッジ２の外周壁とケース１の内周壁と
の間の空隙には、吸水部材６が設けられて、目的とする
二酸化炭素キャニスタ７が形成されている。そして、前
記ケース１および二酸化炭素吸収カートリッジ２は合成
樹脂等からなるものであり、吸水性フィルタ４は不織布
に吸水性樹脂を付着させたものなどからなり、吸水部材
６は吸水性樹脂等からなるものである。また、二酸化炭
素吸収部５に用いられる二酸化炭素吸収剤は、粒状また
はか粒状等のLiOH、Ca(OH)2、Ba(OH)2、KOH、NaOH等の
混合物からなるものである。（たとえば、ケメトロン社
製「バラライム」、和光純薬製「ソーダソープ」などが
市販されている。）なお、二酸化炭素キャニスタ７の通
気抵抗はできる限り小さいことが望ましく、不快な呼吸
抵抗が生じないように二酸化炭素吸収剤の粒径、充填密
度、充填断面積等を決定すべきである。ちなみに、二酸
化炭素吸収剤として、たとえばソーダソープを100g充填
したとすると、これは約230リットルCO2/kg（常圧）の
吸収能を有するから、人の二酸化炭素排出量を0.7リッ
トル／分として常圧下で約33分間使用可能であり、水深
5m程度では圧力増加を考慮しても約20分間使用可能と試
算される。[Embodiment] FIG. 1 is a sectional view of a carbon dioxide canister according to the present invention, in which reference numeral 1 is a carbon dioxide canister case. The case 1 is formed by liquid-tightly screwing a pair of members each having a substantially hollow columnar shape, and an inner peripheral wall thereof has a protrusion 3 for supporting the carbon dioxide absorption cartridge 2,
3 is formed. The carbon dioxide absorption cartridge 2 has a hollow columnar shape with a circumferential portion left at both ends, and a carbon dioxide absorption portion 5 fitted to a pair of water absorbing filters 4 and 4 is housed inside the cartridge. There is. A water absorbing member 6 is provided in a space between the outer peripheral wall of the carbon dioxide absorbing cartridge 2 and the inner peripheral wall of the case 1 to form a target carbon dioxide canister 7. The case 1 and the carbon dioxide absorption cartridge 2 are made of synthetic resin or the like, the water absorbing filter 4 is made of a non-woven fabric to which the water absorbing resin is attached, or the like, and the water absorbing member 6 is made of the water absorbing resin or the like. It is a thing. The carbon dioxide absorbent used in the carbon dioxide absorber 5 is a granular or granular mixture of LiOH, Ca (OH) 2 , Ba (OH) 2 , KOH, NaOH and the like. (For example, "Balalime" manufactured by Chemetron and "Soda soap" manufactured by Wako Pure Chemical Industries, Ltd. are commercially available.) It is desirable that the ventilation resistance of the carbon dioxide canister 7 is as small as possible, and unpleasant breathing resistance does not occur. Therefore, the particle size, packing density, packing cross-sectional area, etc. of the carbon dioxide absorbent should be determined. By the way, if you fill 100g of soda soap as a carbon dioxide absorbent, it has an absorption capacity of about 230 liters CO 2 / kg (normal pressure), so if you set the carbon dioxide emissions of humans to 0.7 liters / minute, It can be used under normal pressure for about 33 minutes,
At about 5 m, it is estimated that it can be used for about 20 minutes even if the pressure increase is taken into consideration.
このような二酸化炭素キャニスタ７にあっては、まず、
底面から順に吸水性フィルタ４、二酸化炭素吸収剤およ
び吸収フィルタ４を充填した二酸化炭素吸収カートリッ
ジ２の外周壁に、吸水部材６を巻装し、あらかじめ閉式
呼吸装置等のチューブなどに接続されたケース１に嵌入
して用いられる。たとえば第２図および第３図にしめ
す、本出願人の出願による実願昭62−156989号に記載さ
れた呼吸装置などに着脱自在に配置されて使用されるも
のである。図中符号８は酸素または酸素混合ガスカート
リッジであり、流量調節ツマミ９を回して酸素または酸
素混合ガスを流し、マウスピース10より息を吐くと、逆
止弁11が閉じ、逆止弁12が開いて輪状管路13内に位置部
の酸素および酸素混合ガスとともに呼気が流入し、チュ
ーブ14が膨らみつつ一部の酸素および酸素混合ガスと呼
気が二酸化炭素キャニスタ７を通過して呼気中の二酸化
炭素が除去される。この時、排気量が大きく各チューブ
14が完全に膨らみきると、排気弁15が開いて過剰のガス
が排出される。一方、逆に息を吸った場合には、逆止弁
11が開いて逆止弁12が閉じ、二酸化炭素キャニスタ７を
通過して二酸化炭素を除去された酸素ガスを含むガスが
輪状管路13より呼吸室16にはいり、酸素および酸素混合
カートリッジ８の酸素および酸素混合ガスとともに潜水
者の肺にはいるようになっている。以上のサイクルを繰
り返すことにより、地上と変わりなく快適に呼吸するこ
とができる。In such a carbon dioxide canister 7, first,
A case in which a water absorbing member 6 is wound around the outer peripheral wall of a water absorbing filter 4, a carbon dioxide absorbent and a carbon dioxide absorbing cartridge 2 filled with the absorbing filter 4 in order from the bottom, and is connected in advance to a tube or the like of a closed breathing apparatus or the like. It is used by inserting into 1. For example, it is detachably arranged for use in the breathing apparatus described in Japanese Patent Application No. 62-156989 filed by the present applicant as shown in FIGS. 2 and 3. In the figure, reference numeral 8 is an oxygen or oxygen mixed gas cartridge, and when the oxygen or oxygen mixed gas is caused to flow by turning the flow rate adjusting knob 9, and the breath is exhaled from the mouthpiece 10, the check valve 11 is closed and the check valve 12 is opened. The expiratory air flows into the ring-shaped conduit 13 together with the oxygen and the oxygen mixed gas at the position, and while the tube 14 is inflated, a part of the oxygen and the oxygen mixed gas and the expiratory gas pass through the carbon dioxide canister 7 so that the dioxide in the exhaled gas Carbon is removed. At this time, the displacement is large and each tube
When 14 is completely inflated, the exhaust valve 15 is opened and excess gas is discharged. On the other hand, if you inhale, the check valve
When 11 is opened and the check valve 12 is closed, the gas containing the oxygen gas from which carbon dioxide has been removed by passing through the carbon dioxide canister 7 enters the breathing chamber 16 through the annular pipe 13, and oxygen and oxygen in the oxygen mixing cartridge 8 are introduced. It is designed to enter the diver's lungs with an oxygen gas mixture. By repeating the above cycle, you can breathe comfortably as on the ground.
［試験例］ 実施例で示した二酸化炭素キャニスタ７を作製し、各種
試験を実施した。[Test Example] The carbon dioxide canister 7 shown in the example was prepared and various tests were carried out.
まず、PCO2限界を0.01ataに設定した、30分間保持する
ことのできる二酸化炭素キャニスタ７は、直径60mm×長
さ80mmの二酸化炭素吸収カートリッジ２に、直径55mm×
厚さ5mmの吸水性フィルタ４、HP吸収剤170ccおよび前記
吸水性フィルタ４を順次充填することにより得られる。
つぎに、このような二酸化炭素キャニスタ７とその外周
に設けられた吸収部材とを閉式呼吸器すなわち潜水器の
二酸化炭素キャニスタケース１に挿入し、水温28〜30℃
の温水、もしくは水温11〜15℃の海で潜水したのち、故
意に水中でマウスピースを５〜６秒間はずして浮上し、
二酸化炭素キャニスタ７を解体、分析した結果、二酸化
炭素吸収部５の吸収剤の吸湿は全くなく、アルカリ臭等
の問題もなかった。なお、二酸化炭素キャニスタ７の構
成部材である吸水性フィルタ４および吸水部材６は、吸
水性樹脂等からなるものであるので、これらが吸水すれ
ば膨張して吸水性フィルタ４および吸水部材６の空間が
埋まることになるが、このことによる呼吸不能等の異常
はみられない。ただし、浸水量が多いと呼吸抵抗が少し
ずつ大きくなり、この結果二酸化炭素キャニスタ７内に
浸水していると判断できる。したがって、呼吸抵抗が大
きくなりはじめたら、ゆっくり呼吸しながら浮上すれば
安全は保証される。First of all, the carbon dioxide canister 7 with the PCO 2 limit set to 0.01ata, which can be held for 30 minutes, has a carbon dioxide absorption cartridge 2 of 60 mm in diameter x 80 mm in length, 55 mm in diameter x
It is obtained by sequentially filling the water-absorbent filter 4 having a thickness of 5 mm, the HP absorbent 170 cc, and the water-absorbent filter 4.
Next, the carbon dioxide canister 7 and the absorbing member provided on the outer periphery thereof are inserted into the carbon dioxide canister case 1 of a closed respirator, that is, a diving machine, and the water temperature is 28 to 30 ° C.
After diving in warm water of 11 to 15 degrees Celsius, deliberately remove the mouthpiece for 5 to 6 seconds in the water to surface,
As a result of disassembling and analyzing the carbon dioxide canister 7, there was no moisture absorption of the absorbent in the carbon dioxide absorbing part 5, and there was no problem such as alkaline odor. Since the water-absorbing filter 4 and the water-absorbing member 6 which are the constituent members of the carbon dioxide canister 7 are made of water-absorbing resin or the like, when they absorb water, the water-absorbing filter 4 and the water-absorbing member 6 expand and expand. However, no abnormalities such as respiratory distress are observed. However, when the amount of flooded water is large, the respiratory resistance gradually increases, and as a result, it can be determined that the carbon dioxide canister 7 is flooded. Therefore, if respiratory resistance begins to increase, safety is guaranteed if you breathe slowly and ascend.
［考案の効果］ 本考案による二酸化炭素キャニスタは、二酸化炭素吸収
部が一対の吸水性フィルタで挾装されてなる二酸化炭素
吸収カートリッジと、この二酸化炭素吸収カートリッジ
の外周壁に設けられた吸水部材を有することを特徴とす
るものであるので、水分が完全に遮断され、二酸化炭素
吸収剤の性能を維持することができ高性能である。この
ためアルカリ性水などが呼吸系内に侵入せず、万一、二
酸化炭素除去器内に浸水しても呼吸可能であり、ゆっく
り浮上することができて安全性が高い。また、軽量で小
型な上、交換がワンタッチでおこなえ、ディスポーザブ
ルであるが、吸湿していなければ連続使用が可能であ
る。このほか、形状がシンプルで軽量なため、有毒ガス
中での作業に用いられる防毒マスクや、火災時等の防災
用マスクにも適用される。[Effects of the Invention] The carbon dioxide canister according to the present invention comprises a carbon dioxide absorption cartridge in which a carbon dioxide absorption part is sandwiched between a pair of water absorption filters, and a water absorption member provided on the outer peripheral wall of the carbon dioxide absorption cartridge. Since it is characterized by having water, water is completely blocked, and the performance of the carbon dioxide absorbent can be maintained, resulting in high performance. For this reason, alkaline water does not enter the respiratory system, and even if the carbon dioxide eliminator is flooded, it is still breathable and can float slowly, which is highly safe. In addition, it is lightweight and compact, and it can be replaced with one touch and is disposable, but it can be used continuously if it does not absorb moisture. In addition, because of its simple shape and light weight, it is also applicable to gas masks used for work in toxic gas and disaster prevention masks in the event of a fire.
第１図は本考案の二酸化炭素キャニスタの断面図、第２
図および第３図は閉式呼吸器の一例を示す図であり第２
図は側面図第３図は正面図、第４図および第５図は従来
例を示す図であり第４図は側面図、第５図は第４図Ｂ−
Ｂ線に沿う断面構成図である。 ２……二酸化炭素吸収カートリッジ、４……吸水性フィ
ルタ、５……二酸化炭素吸収部、６……吸水部材、７…
…二酸化炭素キャニスタ。FIG. 1 is a sectional view of the carbon dioxide canister of the present invention, and FIG.
FIG. 3 and FIG. 3 are views showing an example of a closed respirator.
FIG. 3 is a side view, FIG. 3 is a front view, FIGS. 4 and 5 are views showing a conventional example, FIG. 4 is a side view, and FIG. 5 is FIG.
It is a cross-sectional block diagram which follows the B line. 2 ... Carbon dioxide absorption cartridge, 4 ... Water absorbing filter, 5 ... Carbon dioxide absorption part, 6 ... Water absorbing member, 7 ...
… Carbon dioxide canister.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６３Ｃ 11/24 9338−3Ｄ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B63C 11/24 9338-3D
Claims (1)
で挾装されてなる二酸化炭素吸収カートリッジと、この
二酸化炭素吸収カートリッジの外周壁に設けられた吸水
部材を有することを特徴とする二酸化炭素キャニスタ。1. A carbon dioxide absorbent comprising a carbon dioxide absorbent cartridge having a carbon dioxide absorbent portion fitted with a pair of water absorbent filters, and a water absorbent member provided on an outer peripheral wall of the carbon dioxide absorbent cartridge. Canister.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9480188U JPH0713782Y2 (en) | 1988-07-18 | 1988-07-18 | Carbon dioxide canister |
| DE3888914T DE3888914T2 (en) | 1987-10-14 | 1988-10-11 | Breathing apparatus. |
| EP88116837A EP0311968B1 (en) | 1987-10-14 | 1988-10-11 | Breathing apparatus |
| ES88116837T ES2050687T3 (en) | 1987-10-14 | 1988-10-11 | APPARATUS FOR BREATHING. |
| US07/256,476 US4938211A (en) | 1987-10-14 | 1988-10-12 | Breathing apparatus |
| AU23662/88A AU612708B2 (en) | 1987-10-14 | 1988-10-12 | Breathing apparatus |
| CA000580025A CA1299059C (en) | 1987-10-14 | 1988-10-13 | Breathing apparatus |
| KR1019880013429A KR970010827B1 (en) | 1987-10-14 | 1988-10-14 | Breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9480188U JPH0713782Y2 (en) | 1988-07-18 | 1988-07-18 | Carbon dioxide canister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0217222U JPH0217222U (en) | 1990-02-05 |
| JPH0713782Y2 true JPH0713782Y2 (en) | 1995-04-05 |
Family
ID=31319381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9480188U Expired - Lifetime JPH0713782Y2 (en) | 1987-10-14 | 1988-07-18 | Carbon dioxide canister |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713782Y2 (en) |
-
1988
- 1988-07-18 JP JP9480188U patent/JPH0713782Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0217222U (en) | 1990-02-05 |
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