JPH0626817Y2 - Portable pressure regulator - Google Patents
Portable pressure regulatorInfo
- Publication number
- JPH0626817Y2 JPH0626817Y2 JP1989120961U JP12096189U JPH0626817Y2 JP H0626817 Y2 JPH0626817 Y2 JP H0626817Y2 JP 1989120961 U JP1989120961 U JP 1989120961U JP 12096189 U JP12096189 U JP 12096189U JP H0626817 Y2 JPH0626817 Y2 JP H0626817Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- differential pressure
- transmitter
- calibration
- portable
- 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
- 230000003247 decreasing effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、電子式又は空気式の、差圧式流量発信器又は
圧力発信器（以下差圧式発信器という）のレンジ変更、
指示校正に供する圧力調整器、特に現場作業に於ける迅
速かつ、正確なレンジ変更、指示校正に供する圧力調整
器に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is to change the range of an electronic or pneumatic differential pressure type flow rate transmitter or pressure transmitter (hereinafter referred to as differential pressure type transmitter),
The present invention relates to a pressure regulator used for instruction calibration, and particularly to a pressure regulator used for quick and accurate range change and instruction calibration in field work.
（従来の技術） 従来、行われていた差圧式発信器のレンジ変更、指示校
正では、第４図に示すようなループを構成している。圧
力供給源は、一般にピストン式ポンプ１３か、血圧測定
に用いる送気球によるか、又は他から加圧空気の供給を
うける方式がとられている。ピストン式ポンプ、血圧測
定用送気球の場合は、測定者がマノメータの指示を確か
めつつ手動でポンプ等を動かすことにより、所定の圧力
を得ている。他から加圧空気の供給を受ける場合はマノ
メータを見つつ、減圧弁を操作することにより圧力を加
減し、圧力を調整している。そして、所定圧力下での差
圧式発信器の出力を調整している。(Prior Art) In the range change and instruction calibration of the differential pressure type oscillator which have been conventionally performed, a loop as shown in FIG. 4 is configured. The pressure supply source is generally a piston type pump 13, an air balloon used for blood pressure measurement, or a system in which pressurized air is supplied from other sources. In the case of a piston type pump and an air balloon for measuring blood pressure, the measurer manually operates the pump or the like while confirming the instruction of the manometer to obtain a predetermined pressure. When receiving the supply of pressurized air from another, the pressure is adjusted by operating the pressure reducing valve while observing the manometer. Then, the output of the differential pressure type oscillator under a predetermined pressure is adjusted.
（考案が解決しようとする課題） ピストン式ポンプでは、差圧式発信器の校正を行なう際
に高圧側ダイアフラム室に圧力調整器を接続し、ピスト
ン式ポンプのポンプを手動で動かすことにより常圧（マ
ノメータ０mm水柱）から昇圧するが、その際、昇圧やポ
ンプのニードルバルブでの所定圧力への調整は全て測定
者が手加減により行なうため希望差圧に合せにくく、微
差圧の圧力調整は容易でなく調整に長時間を必要とす
る。(Problems to be solved by the invention) In the piston type pump, when calibrating the differential pressure type transmitter, a pressure regulator is connected to the high pressure side diaphragm chamber and the pump of the piston type pump is manually operated to operate at normal pressure ( The pressure is increased from the manometer 0 mm water column), but at that time, it is difficult for the operator to adjust the pressure and the predetermined pressure with the needle valve of the pump. No adjustment requires a long time.
また、測定毎に系を常圧に戻し、新たに常圧から一連の
加圧・調整操作を行わなければならず、測定の都度、昇
圧・圧力調整・減圧の操作を繰り返すことは煩雑かつ長
時間を必要とする。In addition, the system must be returned to normal pressure for each measurement, and a series of pressurization and adjustment operations must be newly performed from normal pressure, and it is cumbersome and long to repeat the operation of increasing pressure, adjusting pressure, and reducing pressure after each measurement. Need time.
デジタルタイプのマノメータを使用する場合は、差圧指
示は正確となり、校正の精度は上がるが、ピストン式ポ
ンプを使用する限り圧力調整に長時間を必要とすること
は避けられない。When using a digital type manometer, the differential pressure indication becomes accurate and the calibration accuracy increases, but it is inevitable that pressure adjustment will take a long time as long as a piston type pump is used.
一般に旧型式の差圧式発信器程度校正しにくく、必然的
に差圧の加減圧の回数も多くなり時間がかかる。また、
最近の差圧式発信器は精度が±0.1〜0.2％と向上してい
るため、加減圧力の精度も上げる必要があるが、ピスト
ン式ポンプでは所定の精度を得るには長時間を必要とし
困難である。Generally, it is difficult to calibrate as much as the old type differential pressure type transmitter, and inevitably the number of times of differential pressure increase / decrease increases and it takes time. Also,
Since the accuracy of recent differential pressure transmitters has improved to ± 0.1 to 0.2%, it is necessary to increase the accuracy of the pressurizing and depressurizing force, but it is difficult for piston pumps to take a long time to obtain the required accuracy. is there.
これらのことは、血圧測定用送気球を使用した場合も殆
どおなじであり、気球を手で押して測定者の手加減によ
り希望差圧に合せるので、所定の精度を得るには長時間
を必要とする。These things are almost the same when using the balloon for measuring blood pressure, and it takes a long time to obtain the predetermined accuracy because the balloon is pushed by hand to adjust to the desired differential pressure by the operator's manual adjustment. .
ピストン式ポンプにかえ、減圧弁を使用する場合は、他
から加圧空気を供給し、減圧弁の操作により差圧の加減
を行ない、圧力調整ができるが、加圧供給ラインのある
場所に限られ、携帯用としての長所は失われる。If a pressure reducing valve is used instead of a piston pump, pressure can be adjusted by supplying pressurized air from another source and operating the pressure reducing valve to adjust the differential pressure, but only in places with a pressure supply line. And the advantages of being portable are lost.
本考案は上記の如き従来の事情に鑑みなされたもので、
携帯可能でありながら、短時間に所定の差圧に合せる事
ができ、容易にレンジ変更、指示校正を行うことができ
る。The present invention has been made in view of the above conventional circumstances,
Although it is portable, it can adjust to a predetermined differential pressure in a short time, and can easily perform range change and instruction calibration.
（課題を解決するための手段） 本考案は、電子式又は空気式の、差圧式発信器のレンジ
変更、指示校正に使用する校正用器具であって、校正用
空気圧を加減するための減圧弁、３方切替コック、ボリ
ウムタンクを有することを特徴とする携帯用圧力調整器
である。(Means for Solving the Problem) The present invention is an electronic or pneumatic calibration instrument used for changing the range of differential pressure transmitters and indicating calibration, and is a pressure reducing valve for adjusting the calibration air pressure. A portable pressure regulator having a three-way switching cock and a volume tank.
（作用） 本考案に係る携帯用圧力調整器にあっては、３方切替用
コックの１つの口を差圧式発信器に接続し、他の１つの
口を閉じることにより、ボリウムタンクと差圧式発信器
の高圧側ダイアフラム室とを連通し、減圧弁を調整する
ことにより、所定の差圧を差圧式発信器に与える。付与
された差圧のもとで、差圧式発信器の電流を所期の値に
合わせることにより校正する。従って、ボリウムタンク
に加圧空気を充填すれば、外部から連続的に、あるいは
人為的に加圧空気の供給をうけることなく、差圧式発信
器のレンジ変更、指示校正を行うことができる。(Operation) In the portable pressure regulator according to the present invention, one port of the three-way switching cock is connected to the differential pressure type transmitter, and the other port is closed, so that the volume tank and the differential pressure type By communicating with the high pressure side diaphragm chamber of the oscillator and adjusting the pressure reducing valve, a predetermined differential pressure is applied to the differential pressure type oscillator. Calibration is performed by adjusting the current of the differential pressure type oscillator to the desired value under the applied differential pressure. Therefore, if the volume tank is filled with the pressurized air, it is possible to change the range of the differential pressure type transmitter and perform the instruction calibration without continuously or manually supplying the pressurized air from the outside.
（実施例） 本考案に係る携帯用圧力調整器を第１図、第２図に示す
一実施例に基づいて具体的に説明する。(Embodiment) A portable pressure regulator according to the present invention will be specifically described based on an embodiment shown in FIGS. 1 and 2.
第１図においては、１はボリウムタンク即ち加圧空気貯
蔵容器を示している。このボリウムタンク１には加圧空
気充填用のクイックカップリング２が取り付けられてお
り、これを通して外部から加圧空気が充填される。In FIG. 1, reference numeral 1 indicates a volume tank, that is, a pressurized air storage container. The volume tank 1 is provided with a quick coupling 2 for filling pressurized air, through which pressurized air is filled from the outside.
３はボリウムタンク１からの加圧空気供給配管であり、
減圧弁４を経て、３方切替弁５に連通している。3 is a pressurized air supply pipe from the volume tank 1,
It communicates with the three-way switching valve 5 via the pressure reducing valve 4.
また、加圧空気供給配管３と減圧弁４につながるボリウ
ムタンク１側には、該タンク内加圧空気の圧力を検出す
るための小型圧力計（指示圧、０〜１０kg／cm2）６が
配設されている。A small pressure gauge (indicating pressure, 0 to 10 kg / cm 2 ) 6 for detecting the pressure of the pressurized air in the tank is connected to the volume tank 1 side connected to the pressurized air supply pipe 3 and the pressure reducing valve 4. It is arranged.
減圧弁４は、出口圧力が０〜２kg／cm2使用の減圧弁で
あり、該減圧弁により、差圧式発信器のレンジ変更、指
示校正に必要な圧力に調整する。The pressure reducing valve 4 is a pressure reducing valve having an outlet pressure of 0 to 2 kg / cm 2 , and the pressure reducing valve 4 adjusts the pressure necessary for changing the range of the differential pressure type transmitter and indicating calibration.
３方切替弁５の残り２方向のうちの１つの口は、被測定
機器である差圧式発信器への接続口であり、最後の１つ
の口は減圧弁４からの圧力を遮断すると同時に、差圧式
発信器に加えていた空気圧を大気中へ放出する通気孔口
に使用する。７は持運び用の取手である。One port in the remaining two directions of the three-way switching valve 5 is a connection port to the differential pressure type transmitter which is the device to be measured, and the last one port shuts off the pressure from the pressure reducing valve 4 and at the same time. It is used for the vent hole that releases the air pressure applied to the differential pressure transmitter to the atmosphere. 7 is a handle for carrying.
次に、上記携帯用圧力調整器による差圧式流量発信器の
レンジ変更の一実施例を示す。Next, an embodiment of changing the range of the differential pressure type flow rate transmitter by the portable pressure regulator will be described.
第３図は、差圧式発信器のレンジ変更操作時のループ構
成図である。FIG. 3 is a loop configuration diagram at the time of a range changing operation of the differential pressure type oscillator.
１は上記携帯用圧力調整器のボリウムタンク、８はボリ
ウムタンク１から減圧弁４を経て送られてくる空気圧力
の値を受信、表示するマノメータ（横河電気（株）製２
６５４型）、９はレンジ変更対象である差圧式流量発信
器（山武ハネウェル（株）製ＮＤ１２２型）であり、携
帯用圧力調整器１４からの差圧を受け、それに見合った
出力信号を電流計（横河電気（株）製２０１１型）１０
に送る。1 is a volume tank of the portable pressure regulator, 8 is a manometer (made by Yokogawa Electric Co., Ltd. 2) for receiving and displaying the value of the air pressure sent from the volume tank 1 through the pressure reducing valve 4.
654 type) and 9 are differential pressure type flow rate transmitters (ND122 type manufactured by Yamatake Honeywell Co., Ltd.) whose range is to be changed, and receive the differential pressure from the portable pressure regulator 14 and output an output signal corresponding to the differential pressure. (Yokogawa Electric Co., Ltd. 2011 type) 10
Send to.
１１は、ドレン容器である。液体又は高湿度の気体移送
配管に配設されている差圧式流量発信器９のレンジを変
更する場合等にドレン容器１１を付設することにより、
差圧式流量発信器９内部にある残液がマノメータ８や携
帯用圧力調整器１４に流入するのを防止する。11 is a drain container. By attaching the drain container 11 when changing the range of the differential pressure type flow rate transmitter 9 arranged in the liquid or high humidity gas transfer pipe,
The residual liquid inside the differential pressure type flow transmitter 9 is prevented from flowing into the manometer 8 and the portable pressure regulator 14.
いま、出力レンジ（０〜１００％）が４〜２０ｍＡであ
る差圧式流量発信器９の差圧レンジを０〜６２５mm水柱
から０〜２５００mm水柱に変更する場合を示す。Now, the case where the differential pressure range of the differential pressure type flow transmitter 9 whose output range (0 to 100%) is 4 to 20 mA is changed from 0 to 625 mm water column to 0 to 2500 mm water column is shown.
まず、３方切替弁５を切り替え加圧空気供給配管３を閉
じ、マノメータ８及び差圧式流量発信器９と大気を連通
し、マノメータ８の読みを０mm水柱にして、電流計１０
の値が４ｍＡとなるように差圧式流量発信器９内にある
零点調整機構で調整する。First, the three-way switching valve 5 is switched, the pressurized air supply pipe 3 is closed, the manometer 8 and the differential pressure type flow transmitter 9 are communicated with the atmosphere, the reading of the manometer 8 is set to 0 mm water column, and the ammeter 10 is used.
Is adjusted by the zero-point adjusting mechanism in the differential pressure type flow transmitter 9 so that the value of becomes 4 mA.
次に、３方切替弁５を切り替え、ボリウムタンク１と差
圧式流量発信器９を連通させ（大気を遮断）、ボリウム
タンク１からの空気圧力をマノメータ８の読みが２５０
０mm水柱になるように減圧弁４を調整する。Next, the three-way switching valve 5 is switched to connect the volume tank 1 to the differential pressure type flow rate transmitter 9 (interrupt the atmosphere), and the air pressure from the volume tank 1 is read by the manometer 8 as 250.
Adjust the pressure reducing valve 4 so that the water column becomes 0 mm.
マノメータ８の読みが２５００mm水柱になれば、電流計
１０の値が２０ｍＡとなるように差圧式流量発信器９内
にあるスパン調整機構で調整する。When the reading of the manometer 8 reaches 2500 mm water column, the span adjusting mechanism in the differential pressure type flow transmitter 9 adjusts the value of the ammeter 10 to 20 mA.
繰り返しに際し、３方切替コック５の切り替えにより、
加圧空気供給配管３を閉塞、連通できるため、減圧弁４
の微調整によりマノメータ８の読み、２５００mm水柱を
容易に保持できる。When repeating, by switching the three-way switching cock 5,
Since the pressurized air supply pipe 3 can be closed and communicated, the pressure reducing valve 4
The fine reading of the manometer 8 makes it possible to easily hold the 2500 mm water column.
調整ができるまで、上記操作を繰り返す。Repeat the above operation until adjustment is possible.
調整が終了すれば、２５％（８ｍＡ）、５０％（１２ｍ
Ａ）、７５％（１６ｍＡ）に相当する空気圧力をボリウ
ムタンク１で与え、電流計１０の値を記録し、差圧式流
量発信器９の直線性、再現性を確認する。If the adjustment is completed, 25% (8mA), 50% (12m)
A), the air pressure corresponding to 75% (16 mA) is given by the volume tank 1, the value of the ammeter 10 is recorded, and the linearity and reproducibility of the differential pressure type flow transmitter 9 are confirmed.
本校正に際し、調整のための繰り返し操作は平均で６回
であり、所要時間は、直線性、再現性確認操作も含め平
均で７分であった。In this calibration, the repeated operation for adjustment was 6 times on average, and the required time was 7 minutes on average including the linearity and reproducibility confirmation operations.
また、ボリウムタンク内圧力が減少した場合は、もより
の加圧空気供給設備にボリウムタンクを接続するか、ピ
ストン式ポンプにより、加圧空気を供給することによ
り、引続き使用ができる。Further, when the pressure in the volume tank decreases, the volume tank can be continuously used by connecting the volume tank to the pressurized air supply equipment or by supplying the compressed air by the piston type pump.
なお、本願考案に係る携帯用圧力調整器は、同様の方法
により、一般的な空気式計器（例えば空気圧信号が、0.
2〜1.0kg／cm2で作動する記録計等）、圧力発信器のレ
ンジ変更、指示校正にも使用できる。In addition, the portable pressure regulator according to the invention of the present application, by the same method, a general pneumatic instrument (for example, the air pressure signal is 0.
It can also be used to change the range of pressure transmitters and instruct calibrations, such as recorders that operate at 2 to 1.0 kg / cm 2 .
（比較例） 実施例と同一条件で本考案に係る携帯用圧力調整器１４
を従来のピストン式ポンプ１３に変え、レンジ変更を行
った。第４図にそのループ構成図を示す。(Comparative Example) The portable pressure regulator 14 according to the present invention under the same conditions as in the example.
Was changed to the conventional piston type pump 13 and the range was changed. FIG. 4 shows the loop configuration diagram.
まず、マノメータの読み０mm水柱で電流計の値が４ｍＡ
となるように差圧式流量発信器９内にある零点調整機構
で調整する。First, the reading of the manometer is 0 mm and the value of the ammeter is 4 mA with a water column.
The zero-point adjusting mechanism in the differential pressure type flow transmitter 9 is used to make the adjustment.
次いで、ピストン式ポンプ１３でマノメータの読みが２
５００mm水柱となるように加圧し、このときの電流計１
０の値が２０ｍＡとなるように差圧式流量発信器９内の
調整機構で調整する。Next, the manometer reading is 2 with the piston type pump 13.
Pressurized to form a water column of 500 mm, and ammeter 1 at this time
The adjustment mechanism in the differential pressure type flow transmitter 9 adjusts the value of 0 to 20 mA.
調整ができるまで、上記操作を繰り返す。Repeat the above operation until adjustment is possible.
繰り返しに際し、電流計１０の初期値４ｍＡを調整する
ためには、加圧供給系統全体を常圧に戻す。その後、再
度、マノメータ読みが２５００mm水柱に加圧する。When repeating, in order to adjust the initial value of 4 mA of the ammeter 10, the entire pressure supply system is returned to normal pressure. Then, the manometer reading again pressurizes the 2500 mm water column.
本校正に際し、調整のための繰り返し操作は平均で７回
であり、所要時間は、直線性、再現性確認操作も含め平
均で１０分であった。In the main calibration, the repeated operation for adjustment was 7 times on average, and the required time was 10 minutes on average including the linearity and reproducibility confirmation operations.
（考案の効果） 以上説明してきたように本考案に係る携帯用圧力調整器
によれば、減圧弁で任意に、かつ、微妙な空気圧調整が
できるため、個人差によるバラツキが少なく短時間で希
望の圧力に調整ができる。その結果、校正も短時間にで
きる。(Effects of the Invention) As described above, according to the portable pressure regulator of the present invention, the pressure reducing valve allows arbitrary and delicate adjustment of the air pressure. The pressure can be adjusted. As a result, the calibration can be done in a short time.
そして、減圧弁の他、３方切替コックを使用しているた
め、減圧弁で所期圧力を一度設定すれば、３方切替コッ
クを切り替えることにより、設定圧力に影響を与えるこ
となく、差圧式発信器内の圧力を０mm水柱にできるの
で、レンジ変更、指示校正に必要な時間が短縮できる。In addition to the pressure reducing valve, a three-way switching cock is used. Therefore, once the desired pressure is set with the pressure reducing valve, the three-way switching cock is switched so that the set pressure is not affected and the differential pressure Since the pressure inside the transmitter can be set to 0 mm water column, the time required for range change and indication calibration can be shortened.
また、圧力空気を充填したボリウムタンクを有するた
め、加圧空気供給源のないところでも、携行し、使用可
能である。Further, since it has a volume tank filled with pressurized air, it can be carried and used even in the absence of a pressurized air supply source.
更に、ボリウムタンク内の空気圧が減少したときは、最
寄の加圧空気供給源から、ないときはピストン式ポン
プ、自転車用空気入れポンプでも空気充填が可能である
ため、その使用範囲は極めて広い。Furthermore, when the air pressure in the volume tank decreases, it is possible to fill air from the nearest pressurized air supply source, and even when there is no piston type pump or bicycle pump, the range of use is extremely wide. .
第１図は、本考案の一実施例に係る携帯用圧力調整器の
側面図、 第２図は同じく正面図である。 第３図は、本考案の一実施例に係るレンジ変更操作時の
ループ構成図であり、第４図は従来の一実施例に係るレ
ンジ変更、指示校正のループ図である。 １……ボリウムタンク ２……クイックカップリング ３……加圧空気供給配管 ４……減圧弁 ５……３方切替弁 ６……小型圧力計 ７……持ち運び用の取手 ８……マノメータ ９……差圧式流量発信器 １０……電流計 １１……ドレン容器 １２……差圧式流量発信器ターミナルＢＯＸ １３……ピストン式ポンプ １４……携帯用圧力調整器FIG. 1 is a side view of a portable pressure regulator according to an embodiment of the present invention, and FIG. 2 is a front view of the same. FIG. 3 is a loop configuration diagram during a range changing operation according to an embodiment of the present invention, and FIG. 4 is a loop diagram of range changing and instruction calibration according to a conventional example. 1 …… Volume tank 2 …… Quick coupling 3 …… Pressurized air supply piping 4 …… Decompression valve 5 …… 3-way switching valve 6 …… Small pressure gauge 7 …… Portable handle 8 …… Manometer 9 ・ ・ ・… Differential pressure type flow transmitter 10 …… Ammeter 11 …… Drain container 12 …… Differential pressure type flow transmitter terminal BOX 13 …… Piston type pump 14 …… Portable pressure regulator
───────────────────────────────────────────────────── フロントページの続き (72)考案者 笹尾 省治 岡山県浅口郡船穂町大字船穂1543 (72)考案者 藤野 稔 岡山県浅口郡船穂町大字船穂1472―32 (56)参考文献 実公 昭55−45301（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shoji Sasao 1543 Funaho, Funaho-cho, Asaguchi-gun, Okayama Prefecture 723 (72) Minoru Fujino 1472-32 (56) Funaho, Funa-cho, Asaguchi-gun, Okayama Prefecture Reference 55 -45301 (JP, Y2)
Claims (1)
は圧力発信器の、レンジ変更、指示校正に使用する圧力
調整器であって、校正用空気圧を加減するための減圧
弁、３方切替弁、ボリウムタンクを有することを特徴と
する携帯用圧力調整器。1. A pressure regulator used for range change and instruction calibration of an electronic or pneumatic differential pressure type flow transmitter or pressure transmitter, which is a pressure reducing valve for increasing or decreasing calibration air pressure. A portable pressure regulator having a one-way switching valve and a volume tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989120961U JPH0626817Y2 (en) | 1989-10-18 | 1989-10-18 | Portable pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989120961U JPH0626817Y2 (en) | 1989-10-18 | 1989-10-18 | Portable pressure regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0360031U JPH0360031U (en) | 1991-06-13 |
| JPH0626817Y2 true JPH0626817Y2 (en) | 1994-07-20 |
Family
ID=31669009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989120961U Expired - Lifetime JPH0626817Y2 (en) | 1989-10-18 | 1989-10-18 | Portable pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626817Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5545301U (en) * | 1978-08-18 | 1980-03-25 |
-
1989
- 1989-10-18 JP JP1989120961U patent/JPH0626817Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0360031U (en) | 1991-06-13 |
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