JPS60215158A - Air-breather for transmission - Google Patents
Air-breather for transmissionInfo
- Publication number
- JPS60215158A JPS60215158A JP7012684A JP7012684A JPS60215158A JP S60215158 A JPS60215158 A JP S60215158A JP 7012684 A JP7012684 A JP 7012684A JP 7012684 A JP7012684 A JP 7012684A JP S60215158 A JPS60215158 A JP S60215158A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- air
- air chamber
- lubricating oil
- oil
- 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.)
- Granted
Links
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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、自動車用変速機等のケーシング内を大気に・
導通する変速機のエアブリーザに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention provides for exposing the inside of a casing of an automobile transmission, etc. to the atmosphere.
This invention relates to an air breather for a transmission that conducts electricity.
（従来技術）
従来、自動車用の変速機にあっては、変速機ケーシング
内を大気に導通するため潤滑油の飛散しにくい位置にエ
アブリーザを装着している。(Prior Art) Conventionally, in a transmission for an automobile, an air breather is installed at a position where lubricating oil is difficult to scatter in order to conduct the inside of the transmission casing to the atmosphere.
第１図は、４輪駆動車用の副変速機を例にとって従来の
エアブリーザ構造の一例を一部断面にて示したもので、
ドライブシトフト１に伝達されたエンシジン動力は、ケ
ーシング２内の２輪・４輪切換装置によりリアドライブ
シャフト３にのみ動力を伝達する２輪駆動状態、又はリ
アドライブシャフト３及びフロントドライブシャフト４
の両方に動力を伝達する４輪駆動状態に切換えられ、フ
ロン１〜ドライブシヤフト４に対する動力伝達は、リア
ドライブシャフト３でスプロケット５を回転し、このス
プロケット５に噛み合ったチェーン６の駆動で行なって
いる。Figure 1 shows a partial cross-section of an example of a conventional air breather structure, taking an auxiliary transmission for a four-wheel drive vehicle as an example.
The engine power transmitted to the drive shift shaft 1 is transferred to a two-wheel drive state in which power is transmitted only to the rear drive shaft 3 by a two-wheel/four-wheel switching device inside the casing 2, or a two-wheel drive state in which power is transmitted only to the rear drive shaft 3, or a rear drive shaft 3 and a front drive shaft 4.
The vehicle is switched to a four-wheel drive state in which power is transmitted to both of the front wheels, and the power is transmitted from the front 1 to the drive shaft 4 by rotating a sprocket 5 on the rear drive shaft 3 and driving a chain 6 meshed with this sprocket 5. There is.
ケーシング１内を大気に導通するエアブリーザは、リア
ドライブシャフト３を軸承したベアリング７の装着部分
におけるケーシング端面８に通気 ゛孔９を形成し、こ
の通気孔９の外側に他のケーシング１０の装着によって
空気室１１を仕切り形成し、この空気室１１に外部と導
通する下向きに問いたＵ字形のエアーパイプ１２を接続
した構造としている。The air breather that conducts the inside of the casing 1 to the atmosphere has a ventilation hole 9 formed in the casing end face 8 at the mounting part of the bearing 7 that supports the rear drive shaft 3, and a ventilation hole 9 formed on the outside of this ventilation hole 9 by attaching another casing 10. The air chamber 11 is formed into a partition, and a downward U-shaped air pipe 12 communicating with the outside is connected to the air chamber 11.
しかしながら、このような従来のエアブリーザの構造に
あっては、チェーン６の回転駆動で飛散しｌ〔潤滑油が
通気孔９を形成したケーシング端而８の内壁に直接飛着
するため、ケーシング端面８の通気孔９を通って空気室
１１に潤滑油が流れ込んで溜り、エアーパイプ１２から
外部に漏れ出すという問題があった。However, in the structure of such a conventional air breather, the lubricating oil is scattered by the rotational drive of the chain 6 and directly lands on the inner wall of the casing end 8 in which the vent hole 9 is formed. There is a problem in that lubricating oil flows into the air chamber 11 through the ventilation hole 9 and accumulates therein, and leaks out from the air pipe 12.
（発明の目的）
本発明は、このような従来の問題点に鑑みてなされたも
ので、潤滑油の漏れ出しを起すことなくケーシング内を
大気に導通できるようにした変速機のエアブリーザを提
供することを目的とする。(Object of the Invention) The present invention has been made in view of such conventional problems, and provides an air breather for a transmission that allows the inside of the casing to be communicated to the atmosphere without causing leakage of lubricating oil. The purpose is to
（考案の構成）
この目的を達成するため本発明は、ケーシング内を大気
に導通する変速機のエアブリーザにおいて、ケーシング
端面に通気孔を形成し、ギア回転等でこの通気孔に向う
潤滑油の飛散方向を覆ってケーシングよりバッフエルプ
レートを内側に延在し、通気孔の外側に空気室を形成し
、該空気室に大気と導通するエアーパイプを接続するよ
うにしたものである。(Structure of the invention) To achieve this object, the present invention provides an air breather for a transmission that communicates the inside of the casing with the atmosphere, in which a ventilation hole is formed in the end face of the casing, and lubricating oil is scattered toward the ventilation hole when the gear rotates. A baffle plate is extended inward from the casing to cover the entire direction, an air chamber is formed outside the ventilation hole, and an air pipe communicating with the atmosphere is connected to the air chamber.
（実施例）
第２図は本発明の一実施例をケーシングのエアブリーザ
装着部分について示した断面説明図である。(Embodiment) FIG. 2 is a cross-sectional explanatory view showing an embodiment of the present invention at a portion of a casing where an air breather is attached.
まず構成を説明すると、２はケーシング端面８を備えた
ケーシングでありミヶーシング２の左側に他のケーシン
グ２′を、またケーシング２の右側に他のケーシング１
０を装着している。ケーシング２内にはリアドライブシ
ャフト３がベアリング７による支持をもって回転自在に
装着され、このリアドライブレ１１フト３には相対回転
自在にスプロケッ（〜５が設けられ、スプロケット５に
チェーン６を噛み合せて図示しないフロントドライブシ
ャフトに動力伝達を行なうようにしている。First, to explain the configuration, 2 is a casing with a casing end face 8, and there is another casing 2' on the left side of the casing 2, and another casing 1 on the right side of the casing 2.
0 is installed. A rear drive shaft 3 is rotatably mounted inside the casing 2 while being supported by a bearing 7, and a sprocket (~5) is provided on the rear drive shaft 11 and the foot 3 is relatively rotatable, and a chain 6 is engaged with the sprocket 5. Power is transmitted to a front drive shaft (not shown).
チェーン６の右上方となるケーシング端面８には軸方向
には通気孔９が設けられ、チェーン６の回転駆動ににり
通気孔９に向かって飛散ツる潤滑油を妨げる方向にケー
シング端面８より一体にバッフエルプレート１３が延在
され、飛散した潤滑油が直接通気孔９に付着することを
防いでいる。A ventilation hole 9 is provided in the axial direction in the casing end surface 8 which is the upper right side of the chain 6, and the casing end surface 8 is provided in a direction that prevents lubricating oil from scattering toward the ventilation hole 9 due to the rotational drive of the chain 6. A baffle plate 13 is integrally extended to prevent scattered lubricating oil from directly adhering to the vent hole 9.
このバッフエルプレート１３の構造は第２図の■−ｍ断
面を示した第３図から明らかなように、チェーン６の回
転による矢印１４で示す潤滑油の飛散してくる方向に閉
じ、反対方向に間口した形状を有する。As is clear from FIG. 3, which shows the section II-m in FIG. It has a shape with a frontage.
再び第２図を参照丈るに、通気孔９の外側に他のケーシ
ング１０の装着をもって仕切り壁１５の介在により空気
室１６とオイル室１７を上下に連通した状態で分離形成
しており、上部の空気室１６には下向きに開いたＵ字型
のエアパイプ１２を接続して大気に導通しており、また
、下側のＡイル室１７はケーシング端面８に設けた油抜
き孔１８によりケーシング２内に連通されており、この
油扱き孔１８の内側には潤滑油の侵入を防ぐためのカバ
ー１９が装着されている。Referring again to FIG. 2, another casing 10 is attached to the outside of the ventilation hole 9, and the air chamber 16 and the oil chamber 17 are separated and communicated vertically by the interposition of the partition wall 15. A downwardly open U-shaped air pipe 12 is connected to the air chamber 16 of the lower side to communicate with the atmosphere, and the lower air chamber 17 is connected to the casing 2 through an oil drain hole 18 provided in the casing end surface 8. A cover 19 is attached to the inside of this oil handling hole 18 to prevent lubricating oil from entering.
次に上記の実施例の作用を説明すると、４輪駆動のシフ
ト状態において、チェーン６の回転駆動により掻き上げ
られた潤滑油が第３図の矢印１４に示づようにケーシン
グ２の内周面及びケーシング端面８に向かって飛散する
ようになるが、エアブリーザの空気室１６に対する通気
孔９を覆って潤滑油の飛散を阻止する方向にバッフエル
プレート１３が延在されているため、通気孔９の近傍に
飛散してくる潤滑油はバッフエルプレート１３の下側に
当１ｑって通気孔９への侵入が阻止され、バッフエルプ
レート１３は潤滑油の侵入を妨げるに充分な長さを有Ｊ
ることから、通気孔９がら空気室１６に対する潤滑油の
侵入をほとんどなくすことができる。Next, to explain the operation of the above embodiment, in the shift state of the four-wheel drive, the lubricating oil scraped up by the rotational drive of the chain 6 flows onto the inner circumferential surface of the casing 2 as shown by the arrow 14 in FIG. However, since the baffle plate 13 extends in a direction that covers the vent hole 9 for the air chamber 16 of the air breather and prevents the lubricating oil from scattering, the vent hole 9 The lubricating oil that scatters near the baffle plate 1q hits the lower side of the baffle plate 13 and is prevented from entering the ventilation hole 9, and the baffle plate 13 has a sufficient length to prevent the lubricating oil from entering. J
Therefore, it is possible to almost eliminate lubricating oil from entering the air chamber 16 through the ventilation hole 9.
また、ケーシング２の内壁を伝わった潤滑油が通気孔９
より空気室１６側に流れ込んだとしても、空気室１６の
下側には仕切り壁１５の介在で仕切られたオイル室１７
が形成されているため、通気孔９から流れ込／υだ潤滑
油は全て下側のオイル室１７に溜まり、オイル室１７に
潤滑油が溜まっても仕切り壁１５が設けられているため
エアパイプ１２が接続された空気室１６に対する潤滑油
の付着を確実に防止することができる。更に、オイル室
１７の底部には油扱き孔１８が形成されているため、オ
イル室１７に溜まった潤滑油も油扱ぎ孔１８よりケーシ
ング２内に戻されるようになり、エアパイプ１２からの
潤滑油の漏れ出しを確実に防ぐことができる。In addition, the lubricating oil that has passed along the inner wall of the casing 2 is
Even if the oil flows into the air chamber 16 side, there is an oil chamber 17 partitioned off by a partition wall 15 below the air chamber 16.
, all the lubricating oil that flows in from the vent hole 9 accumulates in the lower oil chamber 17 , and even if the lubricating oil accumulates in the oil chamber 17 , the air pipe 12 It is possible to reliably prevent lubricant oil from adhering to the air chamber 16 to which the air chamber 16 is connected. Furthermore, since an oil handling hole 18 is formed at the bottom of the oil chamber 17, the lubricating oil accumulated in the oil chamber 17 is also returned into the casing 2 through the oil handling hole 18, and the lubrication from the air pipe 12 is Oil leakage can be reliably prevented.
尚、上記の実施例では油抜き孔１８に対する潤滑油の流
れ込みを防止するため別部品として設けたカバー１９を
内側にねじ止め等により固定しているが、カバー１９に
ついてもバッフエルプレート１３と同様にケーシング２
と一体に形成するようにしてもよい。また、オイル室１
７に溜まった潤滑油をベアリング７の部分に供給するよ
うに油抜き孔を形成してもよい。更に、上記の実施例は
４輪駆動専用の副変速機を例にとるものであったが、本
発明はこれに限定されず、適宜の変速（幾に用いるエア
ブリーザについてそのまま適用することができる。In the above embodiment, a cover 19 provided as a separate part is fixed inside with screws or the like in order to prevent lubricating oil from flowing into the oil drain hole 18. casing 2
It may be formed integrally with. Also, oil chamber 1
An oil drain hole may be formed to supply the lubricating oil accumulated in the bearing 7 to the bearing 7 portion. Furthermore, although the above-described embodiments have been exemplified by an auxiliary transmission exclusively for four-wheel drive, the present invention is not limited thereto, and can be applied as is to an air breather used for any suitable transmission.
（発明の効果）
以上説明してきたように本発明によれば、ケーシング内
を大気に導通ずる変速機のエアブリーザにおいて、ケー
シング端面に通気孔を形成し、ギア回転等で通気孔に向
かう潤滑油の飛散方向を覆つでバッフエルプレートをケ
ーシング端面から内側に延在し、通気孔の外側に空気室
を形成し、この空気室に大気と導通するエアパイプを接
続するようにしたため、ケーシング外側の空気室に連通
ずる通気孔に対する潤滑油の侵入をバッフエルプレート
の介在により阻止し空気室に対する潤滑油゛の流れ込み
を抑えることができる。また、上記空気室を仕切り壁の
介在で上下に連通した空気室とオイル室を分離して形成
すると、空気室に潤滑油が流れ込んでも仕切り壁を介し
て下側に形成されたオイル室に潤滑油を溜めることでエ
アパイプを接続した空気室から潤滑油を完全に排除し、
エアパイプからの潤滑油の漏れ出しを確実に防止しなが
らケーシング内を大気に導通させることができる。(Effects of the Invention) As described above, according to the present invention, in an air breather for a transmission that communicates the inside of the casing with the atmosphere, a ventilation hole is formed in the end face of the casing, and lubricating oil is directed toward the ventilation hole by gear rotation, etc. The baffle plate extends inward from the end face of the casing to cover the scattering direction, forming an air chamber outside the vent hole, and an air pipe communicating with the atmosphere is connected to this air chamber, so that the air outside the casing is It is possible to prevent lubricating oil from entering into the air vent communicating with the air chamber by interposing the buffer plate, thereby suppressing the lubricating oil from flowing into the air chamber. In addition, if the air chamber is formed by separating the air chamber and oil chamber, which are communicated vertically through a partition wall, even if lubricating oil flows into the air chamber, it will lubricate the oil chamber formed below through the partition wall. By collecting oil, lubricating oil is completely removed from the air chamber connected to the air pipe,
The interior of the casing can be made conductive to the atmosphere while reliably preventing leakage of lubricating oil from the air pipe.
第１図は従来のエアブリーザ構造の一例を４輪駆動車用
副変速機について示した説明図、第２図は本発明の一実
施例を示した断面説明図、第３図は第２図の■−■断面
図である。
２．２−．１０：ケーシング
３ニドライブシヤフト
５：スプロケット
６：チェーン
７：ベアリング
８：ケーシング端面
９：通気孔
１２：エアパイプ
１３：バッフエルプレート
１５：仕切り壁
１６：空気室
１７：オイル室
１８；油抜き
特許出願人 株式会社富士鉄工所
同 上 日産自動車株式会社
代理人 弁理士 竹 内 進FIG. 1 is an explanatory diagram showing an example of a conventional air breather structure for a sub-transmission for a four-wheel drive vehicle, FIG. 2 is a cross-sectional explanatory diagram showing an embodiment of the present invention, and FIG. ■-■ It is a sectional view. 2.2-. 10: Casing 3 Ni drive shaft 5: Sprocket 6: Chain 7: Bearing 8: Casing end face 9: Ventilation hole 12: Air pipe 13: Buffel plate 15: Partition wall 16: Air chamber 17: Oil chamber 18; Oil removal patent application Person: Fuji Iron Works Co., Ltd. Susumu Takeuchi, Patent Attorney, Nissan Motor Co., Ltd.
Claims (2)
リーザにおいて、 ケーシング端面に通気孔を形成し、ギア回転等で該通気
孔に向う潤滑油の飛散方向を覆ってバッフエルプレート
を前記ケーシング端面から内側に延在し、前記通気孔の
外側に空気室を形成し、該空気室に大気と導通するエア
ーパイプを接続したことを特徴とする変速機のエアブリ
ーザ。(1) In an air breather for a transmission that conducts the inside of the casing to the atmosphere, a ventilation hole is formed on the end surface of the casing, and a buffel plate is installed on the end surface of the casing to cover the direction in which lubricating oil is scattered toward the ventilation hole due to gear rotation, etc. An air breather for a transmission, characterized in that an air chamber is formed on the outside of the ventilation hole, and an air pipe that communicates with the atmosphere is connected to the air chamber.
となっている特許請求の範凹第１項記載の変速機のエア
ブリーザ。(2) The air breather for a transmission according to claim 1, wherein the air chamber is a separated chamber that is vertically communicated with each other through a partition wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59070126A JPH0658129B2 (en) | 1984-04-10 | 1984-04-10 | Transmission air breather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59070126A JPH0658129B2 (en) | 1984-04-10 | 1984-04-10 | Transmission air breather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60215158A true JPS60215158A (en) | 1985-10-28 |
| JPH0658129B2 JPH0658129B2 (en) | 1994-08-03 |
Family
ID=13422543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59070126A Expired - Lifetime JPH0658129B2 (en) | 1984-04-10 | 1984-04-10 | Transmission air breather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658129B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669506U (en) * | 1993-03-18 | 1994-09-30 | ヤンマーディーゼル株式会社 | Breather mechanism of deceleration reversing machine |
| DE19704500C1 (en) * | 1997-02-06 | 1997-09-04 | Zahnradfabrik Friedrichshafen | Vehicle gearbox differential |
| EP0937912A2 (en) | 1998-02-18 | 1999-08-25 | Aichi Kikai Kogyo Kabushiki Kaisha | Air breather structure in transmission |
| DE19833536A1 (en) * | 1998-07-25 | 2000-01-27 | Audi Ag | Automotive differential gear box air breather is simpler and more compact than prior art |
| DE10235534A1 (en) * | 2002-08-03 | 2004-02-12 | Zf Friedrichshafen Ag | Automotive transmission gearbox to axle drive has chamber with inclined partition incorporating a third air bleed aperture located at the highest point |
| JP2007132395A (en) * | 2005-11-09 | 2007-05-31 | Nissan Motor Co Ltd | Air breather device |
| JP2007298116A (en) * | 2006-04-28 | 2007-11-15 | Toyota Motor Corp | Transfer device |
| WO2008065530A2 (en) * | 2006-11-29 | 2008-06-05 | Toyota Jidosha Kabushiki Kaisha | Leak prevention structure for vehicle |
| JP2010174976A (en) * | 2009-01-29 | 2010-08-12 | Tsubaki Emerson Co | Air breather device for reduction gear |
| DE102014204906A1 (en) * | 2014-03-17 | 2015-09-17 | Zf Friedrichshafen Ag | ventilator |
| JP2016070320A (en) * | 2014-09-29 | 2016-05-09 | 本田技研工業株式会社 | Power unit |
| CN107820869A (en) * | 2007-01-11 | 2018-03-23 | 株式会社久保田 | Sheller unit |
| JP2018170829A (en) * | 2017-03-29 | 2018-11-01 | 三菱自動車工業株式会社 | Ground structure for electric-vehicular drive unit |
| CN109424727A (en) * | 2017-08-31 | 2019-03-05 | 长城汽车股份有限公司 | Retarder ventilation device and retarder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899549U (en) * | 1981-12-28 | 1983-07-06 | ダイハツ工業株式会社 | Breather device for power transmission device |
| JPS58148376U (en) * | 1982-03-30 | 1983-10-05 | 日産自動車株式会社 | Gear device vent structure |
-
1984
- 1984-04-10 JP JP59070126A patent/JPH0658129B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899549U (en) * | 1981-12-28 | 1983-07-06 | ダイハツ工業株式会社 | Breather device for power transmission device |
| JPS58148376U (en) * | 1982-03-30 | 1983-10-05 | 日産自動車株式会社 | Gear device vent structure |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669506U (en) * | 1993-03-18 | 1994-09-30 | ヤンマーディーゼル株式会社 | Breather mechanism of deceleration reversing machine |
| DE19704500C1 (en) * | 1997-02-06 | 1997-09-04 | Zahnradfabrik Friedrichshafen | Vehicle gearbox differential |
| EP0937912A2 (en) | 1998-02-18 | 1999-08-25 | Aichi Kikai Kogyo Kabushiki Kaisha | Air breather structure in transmission |
| US6065369A (en) * | 1998-02-18 | 2000-05-23 | Aichi Kikai Kogyo Kabushiki Kaisha | Air breather structure in transmission |
| EP0937912A3 (en) * | 1998-02-18 | 2000-06-14 | Aichi Kikai Kogyo Kabushiki Kaisha | Air breather structure in transmission |
| DE19833536A1 (en) * | 1998-07-25 | 2000-01-27 | Audi Ag | Automotive differential gear box air breather is simpler and more compact than prior art |
| DE19833536C2 (en) * | 1998-07-25 | 2002-06-13 | Audi Ag | Device for venting a transmission |
| DE10235534A1 (en) * | 2002-08-03 | 2004-02-12 | Zf Friedrichshafen Ag | Automotive transmission gearbox to axle drive has chamber with inclined partition incorporating a third air bleed aperture located at the highest point |
| JP2007132395A (en) * | 2005-11-09 | 2007-05-31 | Nissan Motor Co Ltd | Air breather device |
| JP2007298116A (en) * | 2006-04-28 | 2007-11-15 | Toyota Motor Corp | Transfer device |
| WO2008065530A2 (en) * | 2006-11-29 | 2008-06-05 | Toyota Jidosha Kabushiki Kaisha | Leak prevention structure for vehicle |
| WO2008065530A3 (en) * | 2006-11-29 | 2008-07-31 | Toyota Motor Co Ltd | Leak prevention structure for vehicle |
| CN107820869A (en) * | 2007-01-11 | 2018-03-23 | 株式会社久保田 | Sheller unit |
| JP2010174976A (en) * | 2009-01-29 | 2010-08-12 | Tsubaki Emerson Co | Air breather device for reduction gear |
| DE102014204906A1 (en) * | 2014-03-17 | 2015-09-17 | Zf Friedrichshafen Ag | ventilator |
| JP2016070320A (en) * | 2014-09-29 | 2016-05-09 | 本田技研工業株式会社 | Power unit |
| JP2018170829A (en) * | 2017-03-29 | 2018-11-01 | 三菱自動車工業株式会社 | Ground structure for electric-vehicular drive unit |
| CN109424727A (en) * | 2017-08-31 | 2019-03-05 | 长城汽车股份有限公司 | Retarder ventilation device and retarder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0658129B2 (en) | 1994-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |