JPH0781641B2 - Seal device - Google Patents
Seal deviceInfo
- Publication number
- JPH0781641B2 JPH0781641B2 JP60145526A JP14552685A JPH0781641B2 JP H0781641 B2 JPH0781641 B2 JP H0781641B2 JP 60145526 A JP60145526 A JP 60145526A JP 14552685 A JP14552685 A JP 14552685A JP H0781641 B2 JPH0781641 B2 JP H0781641B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- cylinder
- space
- pressure
- bellows
- 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
- 239000007788 liquid Substances 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 24
- 239000003921 oil Substances 0.000 description 15
- 238000011109 contamination Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/0535—Seals or sealing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2253/00—Seals
- F02G2253/08—Stem with rolling membranes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、往復動する部分を有し、往復動する部分の一
方に存在する気体や液体が往復動部分より他方に洩れる
のを防ぐ為のシール装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal having a reciprocating portion and preventing gas or liquid existing in one of the reciprocating portions from leaking to the other from the reciprocating portion. Regarding the device.
従来の技術 往復動する部分を有し、シール性の要求される代表的な
ものにヘリウム等を作動ガスとするスターリング機関が
ある。この機関は、加熱器，冷却器によって作動ガスを
加熱，冷却することでガスを膨張，収縮させ、圧力変動
を生じせしめ、パワーピストンで出力を取り出す構成に
なっている。しかし上記作動ガスが外部に洩れると機関
出力の低下をきたし、又、クランク室等の潤滑油が、加
熱器側に運ばれると、熱の為に劣化し、装置内に附着堆
積し、ガスの通路を閉塞する問題を生じる。2. Description of the Related Art A typical Stirling engine that has a reciprocating portion and is required to have a sealing property is a Stirling engine that uses helium as a working gas. This engine has a structure in which a working gas is heated and cooled by a heater and a cooler to expand and contract the gas to cause pressure fluctuation, and an output is taken out by a power piston. However, if the working gas leaks to the outside, the engine output decreases, and if the lubricating oil in the crankcase or the like is carried to the heater side, it deteriorates due to heat and is deposited and deposited inside the device, causing This creates the problem of blocking the passage.
上記の問題点を解決する為に、従来のシール装置として
は、材料にカーボンやフッソ樹脂又はそれらに他の材料
を混入したもの等をロッドのシール用シングとして用い
る方法がとられている。又他の対策としては、ダイアフ
ラムやベローズ等の可撓板を用いる方法がある（例え
ば、一色尚次「スターリングエンジンの開発」，工業調
査会'82.7.25,P57,P194〜196）。代表例として第３図に
示すローリングシールというものがある。これは、往復
運動するロッド１と、ハウジング２の隙間にロールソッ
クと呼ばれるゴム製のローリングダイアフラム３を取付
けており、作動空間内４の作動ガスがクランク室５に流
出するのを防いでいる。又、作動ガスの圧力が高い為に
調圧器６で調圧された油空間７内の油でロールソック３
を支持している。又、調圧器６によりクランク室５に流
出した油は、オイルポンピングリング８により、ロッド
１の往復動に伴って油空間７に戻されるようになってい
る。In order to solve the above-mentioned problems, as a conventional sealing device, a method is used in which a material such as carbon, fluorine resin, or a material in which other material is mixed is used as a rod sealing sing. As another countermeasure, there is a method of using a flexible plate such as a diaphragm or a bellows (for example, Shoji Isshiki "Development of Stirling Engine", Industrial Research Committee '82 .7.25, P57, P194-196). A typical example is a rolling seal shown in FIG. This is equipped with a rolling rolling diaphragm 3 made of rubber called a roll sock in a gap between the reciprocating rod 1 and the housing 2 to prevent the working gas in the working space 4 from flowing out to the crank chamber 5. Further, since the pressure of the working gas is high, the roll sock 3 is filled with the oil in the oil space 7 regulated by the pressure regulator 6.
I support you. The oil that has flown into the crank chamber 5 by the pressure regulator 6 is returned to the oil space 7 by the oil pumping ring 8 as the rod 1 reciprocates.
発明が解決しようとする問題点 しかし、前記従来例のうち、シール用リングを用いたも
のについては、ガス洩れを防ぐには十分でない、またシ
ール部分での抵抗損失が大きく、シール用リングの摩耗
等の問題があった。一方、ベローズや、ダイアフラムを
用いて、第２の従来例の構成にしたものでは、油空間内
に保持される油量は不安定で油量を調節する装置も複雑
になり、さらに不足する油をクランク室から戻す為に、
油の汚れ、劣化等が考えられ、又、運転中に油温が上昇
し、油中に溶け込んでいるガスが発生し、キャビテーシ
ョン等の不具合を生じ、シール装置の寿命を短くする。Problems to be Solved by the Invention However, among the above-mentioned conventional examples, those using a sealing ring are not sufficient to prevent gas leakage, and resistance loss at the seal portion is large, and wear of the sealing ring occurs. There was a problem such as. On the other hand, in the configuration of the second conventional example using the bellows and the diaphragm, the amount of oil held in the oil space is unstable, and the device for adjusting the amount of oil becomes complicated, and the oil shortage is further insufficient. To return from the crankcase,
It is considered that the oil is contaminated, deteriorated, etc., and the oil temperature rises during operation to generate gas dissolved in the oil, which causes problems such as cavitation and shortens the life of the sealing device.
そこで、本発明は油等の液体の汚れ，劣化を防ぎ、シー
ル部分の液体量も一定で補給する必要はなく、可撓板の
前後圧をほぼ一定に保つようにするものである。Therefore, the present invention prevents the liquid such as oil from being contaminated and deteriorated, and it is not necessary to replenish the liquid amount in the seal portion at a constant amount, and the back-and-forth pressure of the flexible plate is kept substantially constant.
問題点を解決するための手段 本発明の技術的な手段は、少くとも２つのベローズやダ
イアフラム等の可撓性のある隔板を、ピストンやロッド
等の往復動する部材と、シリンダ等の側壁の間に設け、
隔板と側壁とによって形成される空間に液体を封入し、
この液体を封入する空間を分割するように、往復動する
部材と側壁との間にシール部材を設けるものである。MEANS FOR SOLVING THE PROBLEMS The technical means of the present invention is to provide a flexible partition plate such as at least two bellows and a diaphragm, a reciprocating member such as a piston and a rod, and a side wall such as a cylinder. Between the
The liquid is sealed in the space formed by the partition plate and the side wall,
A seal member is provided between the reciprocating member and the side wall so as to divide the space for enclosing the liquid.
作用 この技術的手段による作用は次のようになる。Action The action of this technical means is as follows.
すなわち、液体は少くとも２つのベローズやダイアフラ
ム及び側壁で形成される空間に密封されている為に、異
物の混入や汚れもほとんどなく、前記液体も潤滑油と同
一にする必要がない為、流動損失の少ないもの、ガス発
生のほとんどない液体を選択でき、又、ガスの溶け込み
易い液体でもシール装置は密封構造の為、液体封入時に
脱泡すれば、運転中にガス発生によるキャビテーション
等の不具合も生じない。この結果、長寿命で、保守が不
要のシール機構を得ることが出来る。That is, since the liquid is sealed in the space formed by at least two bellows, the diaphragm and the side wall, there is almost no contamination or contamination of the foreign matter, and the liquid does not need to be the same as the lubricating oil. You can select a liquid with little loss or a liquid that hardly generates gas, and even for liquids that easily dissolve gas, the sealing device has a sealed structure, so if you degas bubbles when filling the liquid, problems such as cavitation due to gas generation during operation will also occur. Does not happen. As a result, it is possible to obtain a sealing mechanism which has a long life and requires no maintenance.
実施例 以下、本発明の一実施例を添付図面にもとづいて説明す
る。Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図において、シリンダ９内に往復動するロッド10が
取付けられており、ロッド10とシリンダ９の内壁面との
間にダイアフラム11及び12を設置し、ダイアフラム11,1
2及びシリンダ９で形成される液体空間13,14内に油等の
液体を封入する。また、液体を封入した液体空間13と14
の間には、耐圧ロッドシール15を設け、ロッド10及び耐
圧ロッドシール15で液体空間13及び液体空間14を分離す
る。In FIG. 1, a reciprocating rod 10 is installed in a cylinder 9, and diaphragms 11 and 12 are installed between the rod 10 and the inner wall surface of the cylinder 9, and the diaphragms 11, 1
A liquid such as oil is sealed in the liquid spaces 13 and 14 formed by 2 and the cylinder 9. In addition, liquid spaces 13 and 14 in which liquid is enclosed
A pressure resistant rod seal 15 is provided between them, and the liquid space 13 and the liquid space 14 are separated by the rod 10 and the pressure resistant rod seal 15.
この結果、空間16内の気体はダイアフラム11で、ダイア
フラム11を支える液体を収容する液体空間13と分離さ
れ、同様に、空間17内の気体はダイアフラム12で、ダイ
アフラム12を支える液体を収容する液体空間14と分離さ
れる。As a result, the gas in the space 16 is separated by the diaphragm 11 from the liquid space 13 containing the liquid supporting the diaphragm 11, and similarly, the gas in the space 17 is the diaphragm 12 and the liquid containing the liquid supporting the diaphragm 12. Separated from space 14.
又、空間16内の気体と空間17内の気体の圧力が異なる場
合は、ダイアフラム11を支持する液体空間13内の液体の
圧力とダイアフラム12を支持する液体空間14内の液体の
圧力にも圧力差を生じる。耐圧ロッドシール15はこの圧
力差によって液体空間13及び14内の液体が空間相互に流
入，流出するのを防ぐ為に設けている。又、耐圧ロッド
シール15を設けることにより、液体空間13内の液体と液
体空間14内の液体は圧力的に分離されており、空間16内
の気体の圧力と液体空間13内の液体の圧力は、ほぼ同じ
にすることができ、ダイアフラム11に無理な力がかかる
ことはない。空間17と液体空間14についても同様にほぼ
同圧にすることができ、ダイアフラム12に無理な力はか
からない。この結果、空間16内と空間17内で異種の気体
を使用した場合もまた、気体間に圧力差がある場合も気
体の洩れなくシールできる。又、この実施例では液移動
手段としてポンプ18を備えている。このようにポンプ等
の液移動手段を備えると、シール部材15より若干の液体
の洩れは許される為シール部材15の摺動抵抗による損失
を低減できる。When the pressure of the gas in the space 16 and the pressure of the gas in the space 17 are different, the pressure of the liquid in the liquid space 13 supporting the diaphragm 11 and the pressure of the liquid in the liquid space 14 supporting the diaphragm 12 are also pressure. Make a difference. The pressure resistant rod seal 15 is provided to prevent the liquid in the liquid spaces 13 and 14 from flowing in and out of the spaces due to this pressure difference. Further, by providing the pressure resistant rod seal 15, the liquid in the liquid space 13 and the liquid in the liquid space 14 are pressure-separated, and the pressure of the gas in the space 16 and the pressure of the liquid in the liquid space 13 are , They can be almost the same, and the diaphragm 11 is not forced. Similarly, the space 17 and the liquid space 14 can be made to have almost the same pressure, and the diaphragm 12 is not subjected to an excessive force. As a result, even when different kinds of gas are used in the space 16 and the space 17, and even when there is a pressure difference between the gases, it is possible to seal without gas leakage. Further, in this embodiment, a pump 18 is provided as the liquid moving means. When the liquid moving means such as a pump is provided as described above, a slight amount of liquid is allowed to leak from the seal member 15, so that the loss due to the sliding resistance of the seal member 15 can be reduced.
なお、この実施例では、ダイアフラムをロッドとシリン
ダの内壁面との間に設置したが、ピストンとシリンダ内
壁面との間に設置してもよいことは無論である。In this embodiment, the diaphragm is installed between the rod and the inner wall surface of the cylinder, but it goes without saying that it may be installed between the piston and the inner wall surface of the cylinder.
次に、本発明の他の実施例について説明する。Next, another embodiment of the present invention will be described.
第２図は、他の実施例を示しており、この実施例ではダ
イアフラムの代りに２重のベローズ19,20を用い２重ベ
ローズの外側を構成するベローズ（以下外部ベローズと
呼ぶ）の一端はシリンダ21の側壁に取付けられており、
他端は２重ベローズの内側を構成するベローズ（以下内
部ベローズと呼ぶ）の一連に連結されており、内側ベロ
ーズの他端はロッド22に取付けられている。この種ベロ
ーズを用いるピストン23及びロッド22が往復動する際に
空間24内の圧力と空間25内の液体の圧力、及び、空間26
内の圧力と空間27内の液体の圧力がそれぞれほぼ等しく
なるように２重ベローズ19,20が伸縮する。FIG. 2 shows another embodiment. In this embodiment, double bellows 19 and 20 are used instead of the diaphragm, and one end of a bellows (hereinafter referred to as an outer bellows) constituting the outside of the double bellows is It is attached to the side wall of cylinder 21,
The other end is connected to a series of bellows (hereinafter referred to as an inner bellows) that constitutes the inside of the double bellows, and the other end of the inner bellows is attached to the rod 22. When the piston 23 and the rod 22 using this type of bellows reciprocate, the pressure in the space 24 and the liquid pressure in the space 25, and the space 26
The double bellows 19 and 20 expand and contract so that the internal pressure and the liquid pressure in the space 27 become substantially equal to each other.
さらに、運動用Ｏリング等の耐圧性のシール部材28を設
けて、圧力差をこのシール部材で受けることができる
為、ベローズ等の可撓性隔板に無理な力が加わることな
く圧力の異なる気体の分離も容易にできる。Furthermore, since a pressure-resistant seal member 28 such as an exercise O-ring is provided and a pressure difference can be received by this seal member, the pressure is different without applying an unreasonable force to the flexible partition plate such as the bellows. Gas can be easily separated.
なお、第２図では、内側ベローズを外側ベローズより短
かく図示しているが、同じ長さあるいは長くしてもよい
し、２重ベローズは３重,4重等の多重のベローズでもよ
い。また、簡単のため、図中では液移動手段を省略し
た。In FIG. 2, the inner bellows are shown shorter than the outer bellows, but they may have the same length or longer, or the double bellows may be multiple bellows such as triple and quadruple. Further, for simplicity, the liquid transfer means is omitted in the figure.
発明の効果 本発明は、少くとも２つのベローズ等の可撓性の隔板と
シリンダ等の側壁とによって形成される空間に油等の液
体を密封することができ、液体がクランク室等に流出す
ることによる液体の汚れ、劣化がない為、保守を必要と
せず、又、液体を密封する構造がとれる為に、液体を封
入する際、液体中に溶け込んでいる気体を脱泡すること
ができ、運転中の温度変化でのガス発生によるキャビテ
ーション等の不具合も防げる為、シール装置を長寿命に
保つことができる。又、前記液体も潤滑油と同一にする
必要がない為、流動損失の少ないもの、ガス発生のほと
んどない液体等、シール部分に最適な液体を自由に選択
できる。さらに逆止弁やポンプなどの液移動手段を設け
ているため、シール部材より若干の液体の洩れは許容さ
れ、シール部材摺動抵抗による損失を低減できる。EFFECTS OF THE INVENTION The present invention can seal a liquid such as oil in a space formed by at least two flexible partition plates such as bellows and side walls such as a cylinder, and the liquid flows out to a crank chamber or the like. Since there is no contamination or deterioration of the liquid due to the operation, maintenance is not required, and because the structure for sealing the liquid can be taken, the gas dissolved in the liquid can be degassed when sealing the liquid. Also, since it is possible to prevent problems such as cavitation due to gas generation due to temperature change during operation, it is possible to maintain the life of the sealing device. Further, since the liquid does not have to be the same as the lubricating oil, it is possible to freely select the most suitable liquid for the seal portion, such as a liquid with little flow loss and a liquid with almost no gas generation. Further, since a liquid moving means such as a check valve and a pump is provided, a slight amount of liquid leaks from the seal member, and loss due to the sliding resistance of the seal member can be reduced.
第１図は、本発明の一実施例のシール装置の縦断面図、
第２図は、本発明の他の実施例のシール装置の断面図、
第３図は、代表的な従来例のシール装置の縦断面図であ
る。 ９……シリンダ、10……ロッド、11,12……ダイアフラ
ム、13,14……液体空間、15……耐圧ロッドシール、16,
17……空間。FIG. 1 is a vertical sectional view of a sealing device according to an embodiment of the present invention,
FIG. 2 is a sectional view of a sealing device according to another embodiment of the present invention,
FIG. 3 is a vertical sectional view of a typical conventional sealing device. 9 ... Cylinder, 10 ... Rod, 11,12 ... Diaphragm, 13,14 ... Liquid space, 15 ... Pressure resistant rod seal, 16,
17 ... space.
フロントページの続き (72)発明者 足立 欣一 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭59−58270（ＪＰ，Ａ) 実開 昭60−159859（ＪＰ，Ｕ) 実開 昭61−186062（ＪＰ，Ｕ)Front Page Continuation (72) Inventor Kinichi Adachi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP 59-58270 (JP, A) Actual 60-159859 (JP) , U) Actual development Sho 61-186062 (JP, U)
Claims (3)
間に突出する往復動部材と、 前記シリンダの貫通部に設けられ、前記往復動部材と前
記シリンダの内壁に接するシール部材と、 前記両空間のそれぞれにおいて、一端を前記往復運動部
材の空間に突出した部分に一体運動するように取り付
け、他端をシリンダの内壁に取り付けた可撓性隔板と、 前記可撓性隔板とシール部材とシリンダ内壁とで形成さ
れる２つの液体空間を連通しうる液移動手段とを設けた
シール装置。1. A cylinder that divides a space into two parts, a reciprocating member that penetrates the cylinder and projects into both spaces divided by the cylinder, and a reciprocating member that is provided in a penetrating part of the cylinder and the cylinder. A seal member in contact with the inner wall of the, and a flexible partition plate having one end attached to the projecting portion of the reciprocating member so as to integrally move in each of the two spaces, and the other end attached to the inner wall of the cylinder. A sealing device provided with a liquid moving means capable of communicating two liquid spaces formed by the flexible partition plate, a sealing member, and an inner wall of a cylinder.
あることを特徴とする特許請求の範囲第１項記載のシー
ル装置。2. The sealing device according to claim 1, wherein the partition plate is a diaphragm or multiple bellows.
いたことを特徴とする特許請求の範囲第１項記載のシー
ル装置。3. A sealing device according to claim 1, wherein a pump or a check valve is used as the liquid moving means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145526A JPH0781641B2 (en) | 1985-07-02 | 1985-07-02 | Seal device |
| US07/233,429 US4870821A (en) | 1985-07-02 | 1988-08-18 | Reciprocation apparatus with sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145526A JPH0781641B2 (en) | 1985-07-02 | 1985-07-02 | Seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS629069A JPS629069A (en) | 1987-01-17 |
| JPH0781641B2 true JPH0781641B2 (en) | 1995-09-06 |
Family
ID=15387256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60145526A Expired - Lifetime JPH0781641B2 (en) | 1985-07-02 | 1985-07-02 | Seal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0781641B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6336653U (en) * | 1986-08-26 | 1988-03-09 | ||
| WO2011137143A1 (en) * | 2010-04-30 | 2011-11-03 | Graco Minnesota Inc. | Bellows backup chamber |
| CN105484897B (en) * | 2016-01-19 | 2017-11-14 | 源之翼智能装备制造（江苏）有限公司 | Thermomotor hydraulic diaphragm sealing system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958270A (en) * | 1982-09-27 | 1984-04-03 | Agency Of Ind Science & Technol | Device for sealing against high-pressure gas |
| JPS60159859U (en) * | 1984-03-31 | 1985-10-24 | アイシン精機株式会社 | Stirling engine rod seal |
| JPS61186062U (en) * | 1985-05-10 | 1986-11-20 |
-
1985
- 1985-07-02 JP JP60145526A patent/JPH0781641B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS629069A (en) | 1987-01-17 |
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