JPS6334353B2 - - Google Patents
Info
- Publication number
- JPS6334353B2 JPS6334353B2 JP56154845A JP15484581A JPS6334353B2 JP S6334353 B2 JPS6334353 B2 JP S6334353B2 JP 56154845 A JP56154845 A JP 56154845A JP 15484581 A JP15484581 A JP 15484581A JP S6334353 B2 JPS6334353 B2 JP S6334353B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- head
- valve
- valve body
- actuating rod
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 24
- 238000005520 cutting process Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/56—Mechanical actuating means without stable intermediate position, e.g. with snap action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は流体の流通或いは遮断を瞬時に行う事
の可能な流体開閉バルブに関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a fluid opening/closing valve that can instantly open or shut off fluid.
＜従来の技術＞
従来ガス切断トーチを用いて鋼材を切断する場
合、予熱酸素、燃料ガス及び切断酸素の各バルブ
を適宜開閉して行つているが、切断開始の都度各
バルブの開度を調整して切断に適した予熱炎及び
高圧酸素を形成するものであつて操作手順が必要
であり作業能率が悪い欠点があつた。このために
最近は前記各バルブを予め適当な開度に調整して
おき、且つ各流体供給路に別個の開閉バルブを設
け、切断シーケンスに従つて開閉するものが創作
され、例えば特公昭52−4501号の如く多段的なカ
ムによつて上下スライドさせて開閉するバルブ構
造や、実公昭52−52032号の如く円周上に凹部を
有する回転盤と弁機構を組合わせて開閉するバル
ブ等が発明されている。しかしこれらはいづれも
構造が複雑であり、製作コストが高く、又作動確
実性に欠ける欠点を有しているものである。<Conventional technology> Conventionally, when cutting steel materials using a gas cutting torch, the preheating oxygen, fuel gas, and cutting oxygen valves are opened and closed as appropriate, but the opening degree of each valve is adjusted each time cutting begins. This method requires a preheating flame and high-pressure oxygen suitable for cutting, but has the drawback of requiring operating procedures and poor work efficiency. For this purpose, recently, a system has been created in which each of the valves is adjusted in advance to an appropriate opening degree, and a separate opening/closing valve is provided for each fluid supply path to open and close according to the cutting sequence. There are valve structures such as No. 4501 that open and close by sliding up and down using multi-stage cams, and valves that open and close by combining a rotary disk with a concave portion on the circumference and a valve mechanism such as No. 52-52032. has been invented. However, all of these have the drawbacks of complex structures, high manufacturing costs, and lack of reliable operation.
更に、実公昭42−21900号に開示される如く、
液体を作動流体としカムをレバーにより駆動して
弁の開閉を行うバルブを実施されている。カムを
利用してバルブを開閉する事は合理的であるが、
カムの設計、即ちレバーの設計回動角度及びカム
による設計リフト量等を合理的に検討し設計しな
くてはならない。 Furthermore, as disclosed in Utility Model No. 42-21900,
A valve is implemented in which a cam is driven by a lever to open and close the valve using liquid as the working fluid. Although it is reasonable to use cams to open and close valves,
The design of the cam, that is, the designed rotation angle of the lever, the designed lift amount by the cam, etc. must be rationally considered and designed.
上記したカム面の形状は複雑な曲線を有するも
のであり、その製造手段は型鍛造、鋳造或いはカ
ム盤による機械加工等に多大なコストが要求され
るものである。 The shape of the above-mentioned cam surface has a complicated curve, and the manufacturing method thereof requires die forging, casting, machining using a cam disk, etc., which requires a large amount of cost.
＜発明が解決しようとする問題点＞
前述の如く、上記した従来のバルブは製作コス
トが高く、作動確実性に欠ける事の問題点を有す
るものであり、本発明に係る流体開閉バルブはこ
れらの欠点に鑑み開発された構造簡単にして安価
且つ作動確実な全く新規なバルブに関するもので
ある。<Problems to be Solved by the Invention> As mentioned above, the above-mentioned conventional valves have the problems of high manufacturing cost and lack of reliable operation, and the fluid opening/closing valve according to the present invention solves these problems. This invention relates to a completely new valve that has been developed in view of the drawbacks and has a simple structure, is inexpensive, and has reliable operation.
＜問題点を解決するための手段＞
前記した問題点を解決するための手段は、流体
の出入口を連通した流通路を有し且つ内部に弁座
を有するバルブ本体内に、後部に作動棒を連結し
た弁体をスプリングを介して摺動自在に設け、更
にバルブ本体の後端にピンを介して回動可能なレ
バーを有するレバー受を設けてなる流体開閉バル
ブに於いて、前記レバーの頭部を半球状に形成
し、弁体の開放時に前記レバーの頭部を作動棒の
頭部とレバー受の内壁とに当壁させ、弁体の閉鎖
時に前記レバーを頭部をレバー受内壁に当接させ
る事によつてレバーの回動角度を非対称に規制す
る如く構成した事を特徴とするものである。<Means for Solving the Problems> A means for solving the above-mentioned problems is to install an actuating rod in the rear part of the valve body, which has a flow path that communicates the fluid inlet and outlet, and has a valve seat inside. In a fluid opening/closing valve, in which a connected valve body is slidably provided via a spring, and a lever receiver having a lever rotatable via a pin is provided at the rear end of the valve body, the head of the lever is When the valve body is opened, the head of the lever is brought into contact with the head of the operating rod and the inner wall of the lever receiver, and when the valve body is closed, the head of the lever is brought into contact with the inner wall of the lever receiver. The lever is characterized by a structure in which the angle of rotation of the lever is asymmetrically regulated by abutting the lever.
＜作用＞
前記手段を有する流体開閉バルブに於いて、流
体の流通或いは遮断は弁座に対する弁体の当接或
いは離隔により行う、弁体はスプリングにより常
時弁座方向に付勢されている。弁体に連結した作
動棒をスプリングに抗して摺動する事によつて弁
座より離隔する事が可能である。<Operation> In the fluid opening/closing valve having the above-mentioned means, the flow of fluid into or out of flow is effected by the contact or separation of the valve body with respect to the valve seat, and the valve body is always urged toward the valve seat by a spring. By sliding the actuating rod connected to the valve body against the spring, it is possible to separate it from the valve seat.
上記した弁体の弁座よりの離隔は、レバーをピ
ンを中心に回動する事により行う、即ち、レバー
をレバーの頭部と作動棒の頭部とを当接しつつ回
動する事により作動棒はスプリングに抗して摺動
し弁体が弁座から離隔する。 The above-mentioned separation of the valve body from the valve seat is achieved by rotating the lever around the pin. In other words, the lever is operated by rotating the lever while keeping the head of the lever in contact with the head of the actuating rod. The rod slides against the spring, and the valve body separates from the valve seat.
レバーの回動はレバー受の内壁により規制され
る。即ちレバーが回動しレバー受の内壁と当接し
た位置でレバーの回動は停止する。 Rotation of the lever is regulated by the inner wall of the lever holder. That is, the lever rotates and stops at the position where it comes into contact with the inner wall of the lever receiver.
弁体の開放時には、レバーの頭部は作特棒の頭
部とレバー受の内壁とに当接した状態を保持す
る。このときレバーは作動棒を介してスプリング
により押圧され、その分力によりレバー受の内壁
方向に押圧されその位置を保持する。 When the valve body is opened, the head of the lever remains in contact with the head of the actuation rod and the inner wall of the lever receiver. At this time, the lever is pressed by the spring via the actuating rod, and this force pushes it toward the inner wall of the lever receiver and maintains its position.
弁体の閉鎖時にはレバーはレバー受の内壁にの
み当接する方向に位置する。 When the valve body is closed, the lever is positioned in such a direction that it contacts only the inner wall of the lever receiver.
＜実施例＞
図により本発明の一実施例を具体的に説明する
と、第１図及び第２図に於いてＡは本発明に係る
流体開閉バルブであつて、バルブ本体１には流体
の出入口を連通した通路２が穿孔され、且つ通路
２の入口側には弁座３が設けられている。<Example> An example of the present invention will be specifically described with reference to the drawings. In FIGS. 1 and 2, A is a fluid opening/closing valve according to the present invention, and the valve body 1 has an inlet and an inlet for fluid. A passageway 2 communicating with the two is bored, and a valve seat 3 is provided on the entrance side of the passageway 2.
４は前記本体１の入口側の通路２内を摺動自在
な弁体であつて、後部には頭部５が半球状をした
作動棒６が連結されている。又弁体４はスプリン
グ７によつて通路２に設けられた弁座３に当接さ
れるものである。 Reference numeral 4 denotes a valve body which is slidable within the passage 2 on the inlet side of the main body 1, and an actuating rod 6 having a hemispherical head 5 is connected to the rear portion thereof. Further, the valve body 4 is brought into contact with a valve seat 3 provided in the passage 2 by a spring 7.
次に８は本体１の後端部に嵌合された中空のレ
バー受であつてボルト９により本体１に固定さ
れ、又レバー受８の内部には作動棒６の軸心と同
一線上に位置するピン１０によつて頭部１１が半
球状をしたレバー１２が回動自在に軸着されてい
る。 Next, reference numeral 8 denotes a hollow lever receiver that is fitted into the rear end of the main body 1, and is fixed to the main body 1 with bolts 9. A lever 12 having a hemispherical head 11 is rotatably attached to the lever 12 by a pin 10.
ここで弁体４の開放時に於けるリフト量はレバ
ー１２の頭部１１とピン１０との距離と、弁体４
の閉鎖時に於ける作動棒６の頭部５とピン１０と
の距離との差である。 Here, the lift amount when the valve body 4 is opened is determined by the distance between the head 11 of the lever 12 and the pin 10 and the distance between the valve body 4
This is the difference in distance between the head 5 of the actuating rod 6 and the pin 10 when the actuating rod 6 is closed.
更に、レバー１２が回動する場合に於いて、頭
部１１がレバー受８の内壁上面に当接したときの
レバー１２の角度θ1は頭部１１がレバー受８の内
壁下面に当接したときの角度θ2よりも大きくなる
如くレバー受８の内壁穴はピン１０より上方部分
を下方部分より広く構成してある。更に、レバー
１２が角度θ2だけ回動し頭部１１がレバー受８の
内壁下面に当接する際、前記頭部１１は作動棒６
の頭部５にも当接し、従つてレバー１２は作動棒
６とレバー受８の内壁下面とにより構成される間
隙により規制され、同時に前記間隙により弁体４
の開度も規制されるよう構成してある。 Furthermore, when the lever 12 rotates, the angle θ 1 of the lever 12 when the head 11 comes into contact with the upper surface of the inner wall of the lever receiver 8 is equal to the angle θ 1 when the head 11 contacts the lower surface of the inner wall of the lever receiver 8. The inner wall hole of the lever receiver 8 is configured such that the portion above the pin 10 is wider than the portion below the pin 10 so that the angle θ 2 is larger than the angle θ 2 when the lever holder 8 is bent. Furthermore, when the lever 12 rotates by an angle θ 2 and the head 11 comes into contact with the lower surface of the inner wall of the lever receiver 8, the head 11 touches the operating rod 6.
Therefore, the lever 12 is regulated by the gap formed by the operating rod 6 and the lower surface of the inner wall of the lever receiver 8, and at the same time, the lever 12 is regulated by the gap formed by the valve body 4.
The configuration is such that the opening degree of the valve is also regulated.
又本体１の流体の出入口にはホース接続用のニ
ツプル１３が螺合され且つニツプル１３、作動棒
６の所定位置にはガス漏れ防止用のＯリング１４
が設けられている。 In addition, a nipple 13 for connecting a hose is screwed to the fluid inlet/outlet of the main body 1, and an O-ring 14 for preventing gas leakage is provided at a predetermined position of the nipple 13 and the operating rod 6.
is provided.
次に本発明に係る流体開閉バルブの作動につい
て説明すると、第１図に示す如くレバー１２を手
でもつて下方に押し下げると頭部１１はレバー受
８の内壁上面に当接する。このとき作動棒６の頭
部５はレバー１２と接触しないため、弁体４がス
プリング７によつて押圧され、通路２の弁座３に
当接して流体の流出を遮断し、バルブＡが閉じた
状態になる。 Next, the operation of the fluid opening/closing valve according to the present invention will be described. As shown in FIG. 1, when the lever 12 is held in the hand and pushed down, the head 11 comes into contact with the upper surface of the inner wall of the lever receiver 8. At this time, since the head 5 of the actuating rod 6 does not come into contact with the lever 12, the valve body 4 is pressed by the spring 7 and comes into contact with the valve seat 3 of the passage 2, blocking the outflow of fluid and closing the valve A. It becomes a state.
第２図の如くレバー１２を上方に押し上げると
作動棒６の頭部５がレバー１２の頭部１１によつ
て押し込まれ作動棒６に連結した弁体４と通路２
に設けた弁座３との間に隙間が生じ、これによつ
て本体１の入口から流入した流体は矢印で示す如
く出口へ流通し、バルブＡが開いた状態となる。
このときレバー１２の頭部１１はレバー受８の内
壁下面に当接すると共にスプリング７の押圧を受
けた作動棒６の頭部５により下方へ押圧されるた
め上方へ戻る事なくバルブＡが開いた状態が確実
に保持されるものである。 When the lever 12 is pushed upward as shown in FIG.
A gap is created between the main body 1 and the valve seat 3 provided in the main body 1, so that the fluid flowing in from the inlet of the main body 1 flows to the outlet as shown by the arrow, and the valve A becomes in an open state.
At this time, the head 11 of the lever 12 comes into contact with the lower surface of the inner wall of the lever receiver 8 and is pressed downward by the head 5 of the actuating rod 6 which is pressed by the spring 7, so the valve A opens without returning upward. The state is maintained reliably.
上記実施例に於いては作動棒６の軸心とピン１
０を同一線上に設け、レバー８の内壁穴をピン１
０より上方部分を下方部分より広く穿設する事に
よりレバー受８の内壁穴の中心が作動棒６の軸心
線に対して偏心するように構成し、これによつて
レバー１２の回動角度を上下非対称になる如く規
制したが、第３図に示すようにレバー受８の内壁
穴の中心を作動棒６の軸心と一致させレバー１２
の回動中心であるピン１０を作動棒６の軸心より
下方に設ける事によつてレバー１２の回動角度を
上下非対称に規制してもよいものである。 In the above embodiment, the axis of the actuating rod 6 and the pin 1
0 on the same line, and insert pin 1 into the inner wall hole of lever 8.
By making the upper part wider than the lower part, the center of the inner wall hole of the lever receiver 8 is eccentric to the axis of the actuating rod 6, thereby controlling the rotation angle of the lever 12. However, as shown in FIG.
By providing the pin 10, which is the center of rotation of the lever 12, below the axis of the actuating rod 6, the rotation angle of the lever 12 may be regulated asymmetrically in the vertical direction.
更に、本実施例によれば、例えば従来例として
前述した技術におけるカム、に対応したレバー１
２の頭部１１は半球状に形成するものであり、こ
れは旋盤と総型バイトとにより容易に製作し得る
ものである。 Furthermore, according to this embodiment, the lever 1 corresponds to the cam in the technique described above as a conventional example.
The head 11 of No. 2 is formed into a hemispherical shape, which can be easily manufactured using a lathe and a full-form cutting tool.
また、少なくとも弁が開放する際、前述した従
来例に於いてはカム面上に開放死点を形成する必
要があるが、本実施例によれば上記開放死点はレ
バー１２の頭部１１が作動棒６の頭部５とレバー
受８の内壁下面とに同時に当接する事によつて得
られるため、頭部１１上に前記死点を形成する必
要が無い。 Further, at least when the valve opens, in the conventional example described above, it is necessary to form an opening dead center on the cam surface, but according to this embodiment, the opening dead center is formed by the head 11 of the lever 12. Since this is achieved by simultaneously abutting the head 5 of the actuating rod 6 and the lower surface of the inner wall of the lever receiver 8, there is no need to form the dead center on the head 11.
本発明に係る開閉バルブＡは第４図に示す如く
各流体の調整バルブ夫々を一体に形成し、酸素を
バルブ本体内で予熱酸素と切断酸素に分岐して該
予熱酸素、切断酸素及び燃料ガスの３系列に用い
る如く小型化して、レール１５に沿つて走行する
と共に切断トーチ１６、圧力調整バルブ１７等を
有するガス切断機本体Ｂに簡単に取付ける事が出
来、ガス切断作業の能率を著しく向上させる事が
出来る等の特徴を有するものである。 The on-off valve A according to the present invention has adjustment valves for each fluid integrally formed as shown in FIG. It has been miniaturized so that it can be used in three series, and can be easily attached to the main body B of the gas cutting machine, which runs along the rail 15 and has a cutting torch 16, a pressure adjustment valve 17, etc., and greatly improves the efficiency of gas cutting work. It has characteristics such as being able to
＜発明の効果＞
以上詳細に説明した如く、本発明によれば弁体
の開閉に際しレバーを回動して行うものであり、
特に弁体を開放する場合には頭部を半球状に形成
したレバーをレバー受の内壁と作動棒の頭部とに
当接する事によつて行うものである。従つて作動
が確実であり、且つ前記したレバー及びレバー受
は容易に製作する事が出来るためコストを低減す
る事が出来る等の効果を有するものである。<Effects of the Invention> As explained in detail above, according to the present invention, the valve body is opened and closed by rotating the lever.
In particular, when opening the valve body, the lever having a hemispherical head is brought into contact with the inner wall of the lever receiver and the head of the actuating rod. Therefore, the operation is reliable, and the lever and lever receiver described above can be easily manufactured, so that costs can be reduced.
第１図及び第２図は本発明に係る流体開閉バル
ブの断面説明図、第３図は他の実施例の説明図、
第４図は流体開閉バルブをガス切断機に取付けた
説明図である。
Ａは流体開閉バルブ、Ｂはガス切断機、１はバ
ルブ本体、２は通路、３は弁座、４は弁体、６は
作動棒、７はスプリング、８はレバー受、１０は
ピン、１２はレバーである。
1 and 2 are cross-sectional explanatory views of a fluid opening/closing valve according to the present invention, and FIG. 3 is an explanatory view of another embodiment.
FIG. 4 is an explanatory diagram of a fluid opening/closing valve attached to a gas cutter. A is a fluid opening/closing valve, B is a gas cutter, 1 is a valve body, 2 is a passage, 3 is a valve seat, 4 is a valve body, 6 is an operating rod, 7 is a spring, 8 is a lever holder, 10 is a pin, 12 is a lever.
Claims (1)
部に弁座を有するバルブ本体内に、後部に作動棒
を連結した弁体をスプリングを介して摺動自在に
設け、更にバルブ本体の後端にピンを介して回動
可能なレバーを有するレバー受を設けてなる流体
開閉バルブに於いて、前記レバーの頭部を半球状
に形成し、弁体の開放時に前記レバーの頭部を作
動棒の頭部とレバー受の内壁とに当接させ、弁体
の閉鎖時に前記レバーの頭部をレバー受の内壁に
当接させる事によつてレバーの回動角度を非対称
に規制する如く構成した事を特徴とした流体開閉
バルブ。 ２ 作動棒の軸心と同一線上にレバーの回動中心
を設け、レバー受の内壁穴の中心を前記軸心より
上方へ偏心させて構成した事を特徴とした特許請
求の範囲第１項記載の流体開閉バルブ。 ３ 作動棒の軸心とレバー受の内壁穴の中心を同
一線上に設け、レバーの回動中心を作動棒の軸心
より下方へ偏心させて構成した事を特徴とした特
許請求の範囲第１項記載の流体開閉バルブ。[Scope of Claims] 1. A valve body having a flow path communicating with a fluid inlet and outlet and a valve seat inside thereof is provided with a valve body having an actuating rod connected to the rear thereof so as to be slidable via a spring, Furthermore, in a fluid opening/closing valve in which a lever receiver having a lever rotatable via a pin is provided at the rear end of the valve body, the head of the lever is formed in a hemispherical shape, and when the valve body is opened, the lever The head of the lever is brought into contact with the head of the actuating rod and the inner wall of the lever holder, and the lever head is brought into contact with the inner wall of the lever holder when the valve body is closed, thereby making the rotation angle of the lever asymmetrical. A fluid opening/closing valve characterized in that it is configured to regulate. 2. Claim 1, characterized in that the pivot center of the lever is provided on the same line as the axis of the actuating rod, and the center of the inner wall hole of the lever receiver is eccentrically upward from the axis. Fluid opening/closing valve. 3. Claim 1 characterized in that the axial center of the actuating rod and the center of the inner wall hole of the lever receiver are arranged on the same line, and the rotation center of the lever is eccentrically downward from the axial center of the actuating rod. Fluid opening/closing valve as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15484581A JPS5857578A (en) | 1981-10-01 | 1981-10-01 | Closing valve of fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15484581A JPS5857578A (en) | 1981-10-01 | 1981-10-01 | Closing valve of fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5857578A JPS5857578A (en) | 1983-04-05 |
| JPS6334353B2 true JPS6334353B2 (en) | 1988-07-08 |
Family
ID=15593147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15484581A Granted JPS5857578A (en) | 1981-10-01 | 1981-10-01 | Closing valve of fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857578A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135208A (en) * | 2011-01-18 | 2011-07-27 | 尤隐森 | Ball rod valve |
| DE102018200086B3 (en) * | 2018-01-04 | 2018-12-27 | Hansgrohe Se | Switching device and sanitary shut-off valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4221900Y1 (en) * | 1964-09-01 | 1967-12-15 |
-
1981
- 1981-10-01 JP JP15484581A patent/JPS5857578A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4221900Y1 (en) * | 1964-09-01 | 1967-12-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5857578A (en) | 1983-04-05 |
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