JPS6215446Y2 - - Google Patents
Info
- Publication number
- JPS6215446Y2 JPS6215446Y2 JP1982052270U JP5227082U JPS6215446Y2 JP S6215446 Y2 JPS6215446 Y2 JP S6215446Y2 JP 1982052270 U JP1982052270 U JP 1982052270U JP 5227082 U JP5227082 U JP 5227082U JP S6215446 Y2 JPS6215446 Y2 JP S6215446Y2
- Authority
- JP
- Japan
- Prior art keywords
- separation chamber
- oil
- chamber
- air cleaner
- oil separation
- 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
- 238000000926 separation method Methods 0.000 claims description 63
- NUFNQYOELLVIPL-UHFFFAOYSA-N acifluorfen Chemical compound C1=C([N+]([O-])=O)C(C(=O)O)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 NUFNQYOELLVIPL-UHFFFAOYSA-N 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 54
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は、エンジンのクランク室ブレザー装置
に関し、ブレザー装置から出たブローバイガスを
エアクリーナの外面に設けたオイル分離室で再び
オイル分離を行なうに際し、オイルをガスから確
実に分離できるとともに、上記ブローバイガスを
導く導通管をオイル分離室に容易に接続できるも
のを提供する。クランク室ブレザー装置の従来技
術としては、実公昭54−3217号公報（以下、従来
例１という）や実公昭52−44767号公報（以下、
従来例２という）に示すように、エアクリーナの
外面にオイル分離室を設け、オイル分離室の空間
上にエンジンから延びたブローバイガスの導通管
の一端開口面を単に開放したものがある。[Detailed description of the invention] The present invention relates to an engine crank chamber blazer device, and when the blow-by gas emitted from the blazer device is separated from the oil again in an oil separation chamber provided on the outer surface of the air cleaner, it is possible to reliably remove oil from the gas. To provide an oil separating chamber that can be separated and easily connect a conduit pipe for guiding the blow-by gas to an oil separation chamber. Conventional technologies for crank chamber blazer devices include Utility Model Publication No. 54-3217 (hereinafter referred to as Conventional Example 1) and Utility Model Publication No. 52-44767 (hereinafter referred to as Conventional Example 1).
As shown in Conventional Example 2, there is an air cleaner in which an oil separation chamber is provided on the outer surface of the air cleaner, and one end of a blow-by gas conduit extending from the engine is simply opened above the oil separation chamber.
上記従来例２では、導通管の開口面から分離室
に流入したブローバイガスは、若干上方の対向壁
に空けたエアクリーナとの間の連通口に、なんら
遮蔽物もなく吹き抜けてしまう可能性が大きく、
未分離のオイルがこのブローバイガスの流れにの
つてエアクリーナの浄気室に侵入してしまう虞れ
がある。 In Conventional Example 2 above, there is a strong possibility that the blow-by gas flowing into the separation chamber from the opening surface of the conduit pipe will blow through without any obstruction to the communication port between the air cleaner and the air cleaner, which is formed in the opposing wall slightly above. ,
There is a possibility that unseparated oil may enter the clean air chamber of the air cleaner along with the flow of this blow-by gas.
また、上記従来例１では、導通管の開口面と吸
気管に続く連通口の入口とは漏斗状の吸入口に対
して上・下対向状に配置されており、導通管から
オイル分離室に入つたブローバイガスは当該分離
室の内周壁に沿つて案内されながら、オイルを分
離したガスは上記連通口から吸気管内に流入しよ
うとするが、ガスから分離したオイルが分離室内
周壁を旋回するブローバイガスの流れに再びのつ
て、連通口から吸気室に侵入してしまう虞れがあ
る。 In addition, in Conventional Example 1, the opening surface of the conduction pipe and the inlet of the communication port following the intake pipe are arranged to face each other upwardly and downwardly with respect to the funnel-shaped intake port, and the flow from the conduction pipe to the oil separation chamber is The blow-by gas that has entered is guided along the inner circumferential wall of the separation chamber, while the gas from which the oil has been separated tries to flow into the intake pipe from the communication port. There is a risk that the gas may get back into the flow of gas and enter the intake chamber through the communication port.
従つて、上記従来技術では、ともに、オイルを
ブローバイガスから確実に分離することができな
い。 Therefore, in both of the above-mentioned conventional techniques, it is not possible to reliably separate the oil from the blow-by gas.
又、ブレザー装置を形成する側にエンジンが大
きく傾斜すると、潤滑油面がブレサー装置を塞い
で、エアクリーナに潤滑油が吸われる結果、上記
と同じくエンジンが不完全燃焼を起こす一方、ク
ランク室側では潤滑油が液のままエアクリーナへ
吸出されて、潤滑不足が起こり、エンジンの焼き
付きの原因ともなる。 Additionally, if the engine is tilted significantly towards the side where the blazer device is formed, the lubricating oil surface will block the blazer device and the lubricating oil will be sucked into the air cleaner, resulting in incomplete combustion in the engine as described above, while on the crank chamber side The lubricating oil is sucked out into the air cleaner as a liquid, resulting in insufficient lubrication and can cause the engine to seize.
本考案は、上記欠点を解消するもので、例えば
第２図乃至第６図を用いて説明すると、エンジン
１のエアクリーナ２の外面にオイル分離室３を形
成し、エンジン１のクランク室９のブレザー室１
０と上記オイル分離室３とを導通管１２で連通
し、導通管１２の一端を傾斜状に開口してその開
口部分を分離室入口８とし、当該分離室入口８
を、その最も突出した部分がエアクリーナ２の外
面に接当され、その開口面が下方に向けられて且
つオイル分離室３の中間高さ部７に位置づけられ
るように配置するとともに、オイル分離室３の一
部をエアクリーナ２の浄気室に連通口６で連通
し、オイル分離室３の分離室入口８より上部１３
に連通口６を空け、オイル分離室３の分離室入口
８より下部１４に分離オイルの処理部１５を設
け、燃焼室１６からクランク室９に漏洩したブロ
ーバイガスをブレザー装置１０でオイル分離し、
さらにオイル分離室３でもオイル分離して、エア
クリーナ２の浄気室５に導入するように構成した
ものである。 The present invention is intended to eliminate the above-mentioned drawbacks. For example, when explained using FIGS. Room 1
0 and the oil separation chamber 3 are communicated through a conduit pipe 12, one end of the conduit pipe 12 is opened in an inclined manner, and the opening portion is used as a separation chamber inlet 8.
is arranged so that its most protruding part is in contact with the outer surface of the air cleaner 2, its opening face is directed downward, and is positioned at the intermediate height part 7 of the oil separation chamber 3. A part of the oil separation chamber 3 is connected to the clean air chamber of the air cleaner 2 through a communication port 6, and a part of the oil separation chamber 3 is connected to an upper part 13
A communication port 6 is opened in the oil separation chamber 3, a separated oil processing section 15 is provided below the separation chamber entrance 8 of the oil separation chamber 3, and the blow-by gas leaked from the combustion chamber 16 to the crank chamber 9 is separated into oil by a Blazer device 10.
Further, the oil is separated in the oil separation chamber 3 and introduced into the clean air chamber 5 of the air cleaner 2.
分離室入口８の最も突出した部分をエアクリー
ナ２の外面に接当し、この接当部より上方に連通
口６を設けるので、導通管１２に案内されたブロ
ーバイガスは分離室入口８から下方に向けられた
開口面を一旦通り、上記接当部を回り込むように
して連通口６に達するのである。 The most protruding part of the separation chamber inlet 8 is brought into contact with the outer surface of the air cleaner 2, and the communication port 6 is provided above this contact part, so that the blow-by gas guided into the conduit pipe 12 flows downward from the separation chamber inlet 8. It passes once through the oriented opening surface and goes around the abutting portion to reach the communication port 6.
その際、ブローバイガスは上記開口面に近接す
るエアクリーナ外面に吹き当たるので、オイル分
はより多くこの外面に付着してガス分から効率的
に分離される。 At this time, since the blow-by gas is blown against the outer surface of the air cleaner near the opening surface, more oil adheres to this outer surface and is efficiently separated from the gas.
しかも、分離されたオイルがガスの流れに沿お
うとしても、連通口との間に介在する分離室入口
８の突出部が遮蔽してオイルが連通口に達するこ
とを防止する。 Furthermore, even if the separated oil tries to follow the gas flow, the protruding portion of the separation chamber inlet 8 interposed between the communication port and the separation chamber inlet 8 blocks the oil and prevents the oil from reaching the communication port.
以下、本考案の実施例を図面に基いて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は小型管理機の左側面図、第２図はリコ
イルスタータ付強制空冷縦軸エンジンの要部切欠
平面図、第３図は同エンジンの左側面図、第４図
は同エンジンの縦断面図、第５図はエアクリーナ
の要部切欠左側面図、第６図はエアクリーナの縦
断面図であつて、小型管理機２０は、本体上方に
縦軸エンジン１を搭載し、下方に耕運爪１７を取
付けて上記エンジンに連動し、後方に大きく操作
ハンドル１８を延出する。 Figure 1 is a left side view of a small control machine, Figure 2 is a cutaway plan view of the main parts of a forced air-cooled vertical engine with recoil starter, Figure 3 is a left side view of the same engine, and Figure 4 is a longitudinal section of the engine. 5 is a cutaway left side view of the main part of the air cleaner, and FIG. 6 is a vertical sectional view of the air cleaner. A pawl 17 is attached to interlock with the engine, and an operating handle 18 is extended rearward.
上記縦軸エンジン１は、クランク室９及びシリ
ンダ２２の上方に導風ケース２１を配置して、当
該導風ケース内にクランク軸と連動した冷却フア
ン２３を収容し、その前面にリコイルスタータ２
４を配置して、伝動プーリーを介して冷却フアン
２３に接続する。 The vertical shaft engine 1 has an air guide case 21 disposed above the crank chamber 9 and the cylinders 22, a cooling fan 23 interlocked with the crankshaft accommodated in the air guide case, and a recoil starter 2 in front of the air guide case 21.
4 is arranged and connected to the cooling fan 23 via a transmission pulley.
一方、エンジン１の上方でリコイルスタータ２
４の後方に燃料タンク２５を配置し、その左側下
方にエアクリーナ２を設けて、気化器２６を介し
てエンジンの吸気ポート２７に接続する。 On the other hand, above the engine 1, the recoil starter 2
A fuel tank 25 is disposed behind the fuel tank 4, and an air cleaner 2 is provided below the left side of the fuel tank 25, and is connected to an intake port 27 of the engine via a carburetor 26.
他方、エンジンの吸排気ブロツクの横側でクラ
ンク室９の後方にタペツト室２９を設け、その上
方でクランクケース２８外にブレザー装置１０を
形成して、クランク室９とタペツト室２９を通気
孔３０で連通し、タペツト室２９とブレザー装置
１０をブレザー連通孔３１で連通するとともに、
ブレザ装置１０から導出した導通管１２をエアク
リーナ２の外部に設けたオイル分離室３に接続す
ることにより、燃焼室からクランク室９に漏れ出
たブローバイガスをタペツト室２９に導いて第１
次オイル分離を行い、更にブレザー装置１０に通
して第２次オイル分離を行なつた後、エアクリー
ナ２に吸わせることにしてある。 On the other hand, a tappet chamber 29 is provided behind the crank chamber 9 on the side of the intake/exhaust block of the engine, and above the tappet chamber 29 a Blazer device 10 is formed outside the crank case 28, and the crank chamber 9 and the tappet chamber 29 are connected to each other through a ventilation hole 30. communicates with the tapepet chamber 29 and the blazer device 10 through the blazer communication hole 31,
By connecting the conduit pipe 12 led out from the blazer device 10 to the oil separation chamber 3 provided outside the air cleaner 2, the blow-by gas leaked from the combustion chamber to the crank chamber 9 is guided to the tappet chamber 29 and
After the next oil separation is performed and the oil is passed through the Blazer device 10 for a second oil separation, the air is sucked into the air cleaner 2.
上記エアクリーナ２はクリーナ本体３２、クリ
ーナエレメント３３、蓋体３４及びオイル分離室
３から成り、クリーナ本体３２と蓋体３４を嵌着
してレバー３５で止め付けながら、その間に楕円
状で紙式のクリーナエレメント３３を介装させ
て、内部を浄気室５とし、その後方（第５図の左
方向）をエンジンシリンダ２２側に傾斜状に突設
して開口３６を明け、気化器２６の入口部と接続
する。 The air cleaner 2 is composed of a cleaner body 32, a cleaner element 33, a lid 34, and an oil separation chamber 3. A cleaner element 33 is interposed to form a clean air chamber 5, and its rear (left direction in FIG. 5) is provided in an inclined manner protruding toward the engine cylinder 22 side to form an opening 36, which is an inlet of the carburetor 26. Connect with the department.
一方、エアクリーナ２の右方（第５図の後方
向）の外面に長形のオイル分離室３を上方に行く
程エンジン前方（第５図の右方向）に傾くように
略45度傾斜させながら付設し、オイル分離室３の
中間高さ部７に分離室入口８を空け、この分離室
入口８にブレザー装置１０の出口１１を導通管１
２で連通し、当該オイル分離室３の分離室入口８
より斜め上部１３に複数の連通口６を空けて浄気
室５とオイル分離室３を連通する。 On the other hand, on the outer surface of the right side of the air cleaner 2 (rearward direction in Figure 5), a long oil separation chamber 3 is installed at an angle of approximately 45 degrees so that it is tilted toward the front of the engine (toward the right in Figure 5) as it goes upward. A separation chamber inlet 8 is provided in the intermediate height portion 7 of the oil separation chamber 3, and an outlet 11 of the Blazer device 10 is connected to the separation chamber inlet 8 through the conduit pipe 1.
2 communicates with the separation chamber inlet 8 of the oil separation chamber 3.
A plurality of communication ports 6 are provided in a more oblique upper part 13 to communicate the clean air chamber 5 and the oil separation chamber 3.
そして、オイル分離室３の分離室入口８を基準
とする連通路６とは対称な斜め下部１４にウレタ
ン製スポンジからなる分離オイルの処理部１５を
設けることにより、ブレザー装置１０で予めオイ
ル分離を行なつたブローバイガスを更にオイル分
離室３でもオイルの分離を行なつて斜め下方のオ
イル処理部へこの分離オイルを滴下しながら、清
浄なブローバイガスを浄気室５に導くものであ
る。 By providing a separated oil processing section 15 made of a urethane sponge in the diagonally lower part 14 that is symmetrical to the communication path 6 with the separation chamber entrance 8 of the oil separation chamber 3 as a reference, oil separation is performed in advance by the Blazer device 10. The resulting blow-by gas is further separated into oil in an oil separation chamber 3, and the separated oil is dripped into an oil treatment section located diagonally downward, while the clean blow-by gas is introduced into a clean air chamber 5.
尚、本考案は、縦軸エンジン以外の各種エンジ
ンに適用できるが、その際、オイル分離室は、ブ
レザー装置のある方向に下り傾斜状にしてエアク
リーナに付設すると良好である。 The present invention can be applied to various types of engines other than vertical-shaft engines. In this case, it is preferable that the oil separation chamber be attached to the air cleaner so as to be inclined downward in the direction in which the blazer device is located.
以下、本考案の効果を述べると、導通管の一端
を傾斜状に開口してこれを分離室入口とし、その
最突出端をエアクリーナの外面に接当させ、その
開口面を下向きにするとともに、分離室入口より
上方に連通口を空けたので、オイルはより多くエ
アクリーナ外面に付着してガスから効率的に分離
され、しかも、分離室入口の突出部分で遮蔽され
て連通口に達することも阻止される。 Hereinafter, the effects of the present invention will be described. One end of the conduit is opened in a slanted manner to serve as the entrance to the separation chamber, the most protruding end thereof is brought into contact with the outer surface of the air cleaner, and the opening surface is directed downward. Since the communication port is opened above the separation chamber entrance, more oil adheres to the outer surface of the air cleaner and is efficiently separated from the gas, and is also blocked by the protruding part of the separation chamber entrance and prevented from reaching the communication port. be done.
従つて、オイルはブローバイガスから確実に分
離され、エアクリーナに流入することはない。 Therefore, the oil is reliably separated from the blow-by gas and does not flow into the air cleaner.
また、エアクリーナ外面に導通管の一端を接当
するので、オイル分離室に対して導通管の挿入の
深さを調節する手間を省け、簡便に導通管をオイ
ル分離室に取付けることができる。 Furthermore, since one end of the conduit is brought into contact with the outer surface of the air cleaner, the effort of adjusting the depth of insertion of the conduit into the oil separation chamber is eliminated, and the conduit can be easily attached to the oil separation chamber.
最後に、オイル分離室と浄気室とを結ぶ連通口
は分離室入口より上部に設けられているので、エ
ンジンが急傾斜する場合など、潤滑油面下にブレ
ザー装置が来ても、エアクリーナはオイル付着に
よる負圧を呈さないので、一挙に潤滑油がオイル
分離室に吸われて瞬時に焼き付きを起こすことは
なく、又、たとえ、オイル分離室に潤滑油が流入
しても、浄気室との連通孔は上方にあるので、そ
こまで侵入することはなく、下方のオイル処理部
に滴下して、オイル分離性能を高く維持できる、
これにより、エンジンの傾斜性能を高めることが
できる。 Finally, the communication port connecting the oil separation chamber and the clean air chamber is located above the entrance to the separation chamber, so even if the Blazer device is below the lubricating oil level, such as when the engine is tilted steeply, the air cleaner will not work. Since there is no negative pressure due to oil adhesion, the lubricating oil will not be sucked into the oil separation chamber all at once and cause instant seizure.Also, even if lubricating oil flows into the oil separation chamber, the clean air chamber Since the communication hole is located above, it does not penetrate that far and drips into the oil treatment section below, maintaining high oil separation performance.
Thereby, the tilting performance of the engine can be improved.
第１図は小型管理機の左側面図、第２図はリコ
イルスタータ付強制空冷縦軸エンジンの要部切欠
平面図、第３図は同エンジン左側面図、第４図は
同エンジンの縦断面図、第５図はエアクリーナの
要部切欠左側面図、第６図はエアクリーナの縦断
面図である。
１……エンジン、２……エアクリーナ、３……
オイル分離室、５……浄気室、６……連通口、７
……中間高さ部、８……分離室入口、９……クラ
ンク室、１０……ブレザー装置、１１……ブレザ
ー装置の出口、１２……導通管、１３……分離室
の斜め上部、１４……分離室の斜め下部、１５…
…オイル分離の処理部、１６……燃焼室。
Figure 1 is a left side view of the small control machine, Figure 2 is a cutaway plan view of the main parts of the forced air-cooled vertical shaft engine with recoil starter, Figure 3 is a left side view of the engine, and Figure 4 is a longitudinal section of the engine. 5 is a cutaway left side view of the main part of the air cleaner, and FIG. 6 is a longitudinal sectional view of the air cleaner. 1...Engine, 2...Air cleaner, 3...
Oil separation chamber, 5...Pure air chamber, 6...Communication port, 7
...Intermediate height portion, 8... Separation chamber entrance, 9... Crank chamber, 10... Blazer device, 11... Blazer device outlet, 12... Conduit pipe, 13... Diagonal upper part of separation chamber, 14 ...Diagonally lower part of the separation chamber, 15...
...Oil separation processing section, 16...Combustion chamber.
Claims (1)
離室３を形成し、エンジン１のクランク室９のブ
レザー室１０と上記オイル分離室３とを導通管１
２で連通し、導通管１２の一端を傾斜状に開口し
てその開口部分を分離室入口８とし、当該分離室
入口８を、その最も突出した部分がエアクリーナ
２の外面に接当され、その開口面が下方に向けら
れて且つオイル分離室３の中間高さ部７に位置づ
けられるように配置するとともに、オイル分離室
３の一部をエアクリーナ２の浄気室に連通口６で
連通し、オイル分離室３の分離室入口８より上部
１３に連通口６を空け、オイル分離室３の分離室
入口８より下部１４に分離オイルの処理部１５を
設け、燃焼室１６からクランク室９に漏洩したブ
ローバイガスをブレザー装置１０でオイル分離
し、さらにオイル分離室３でもオイル分離して、
エアクリーナ２の浄気室５に導入するように構成
したことを特徴とするエンジンのクランク室ブレ
ザー装置。 An oil separation chamber 3 is formed on the outer surface of the air cleaner 2 of the engine 1, and a conduction pipe 1 connects the Blazer chamber 10 of the crank chamber 9 of the engine 1 and the oil separation chamber 3.
2, one end of the conduit pipe 12 is opened in an inclined manner, and the opening part is used as a separation chamber inlet 8, and the most protruding part of the separation chamber inlet 8 is in contact with the outer surface of the air cleaner 2, and The oil separation chamber 3 is arranged so that its opening face is directed downward and is positioned at the intermediate height portion 7 of the oil separation chamber 3, and a part of the oil separation chamber 3 is communicated with the clean air chamber of the air cleaner 2 through a communication port 6. A communication port 6 is provided in the upper part 13 of the oil separation chamber 3 from the separation chamber inlet 8, and a separated oil processing section 15 is provided in the lower part 14 of the oil separation chamber 3 from the separation chamber inlet 8, so that the oil leaks from the combustion chamber 16 to the crank chamber 9. The blow-by gas is separated into oil in the Blazer device 10, and further separated into oil in the oil separation chamber 3.
A crank chamber blazer device for an engine, characterized in that it is configured to be introduced into a clean air chamber 5 of an air cleaner 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5227082U JPS58154810U (en) | 1982-04-09 | 1982-04-09 | Engine crank chamber blazer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5227082U JPS58154810U (en) | 1982-04-09 | 1982-04-09 | Engine crank chamber blazer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58154810U JPS58154810U (en) | 1983-10-17 |
| JPS6215446Y2 true JPS6215446Y2 (en) | 1987-04-20 |
Family
ID=30062979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5227082U Granted JPS58154810U (en) | 1982-04-09 | 1982-04-09 | Engine crank chamber blazer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58154810U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2517238Y2 (en) * | 1986-02-26 | 1996-11-20 | 川崎重工業株式会社 | Engine breather device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244767U (en) * | 1975-09-26 | 1977-03-30 | ||
| JPS543217U (en) * | 1977-06-08 | 1979-01-10 |
-
1982
- 1982-04-09 JP JP5227082U patent/JPS58154810U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244767U (en) * | 1975-09-26 | 1977-03-30 | ||
| JPS543217U (en) * | 1977-06-08 | 1979-01-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58154810U (en) | 1983-10-17 |
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