JP4152485B2 - Variable pitch propeller drive unit - Google Patents

Variable pitch propeller drive unit Download PDF

Info

Publication number
JP4152485B2
JP4152485B2 JP16272798A JP16272798A JP4152485B2 JP 4152485 B2 JP4152485 B2 JP 4152485B2 JP 16272798 A JP16272798 A JP 16272798A JP 16272798 A JP16272798 A JP 16272798A JP 4152485 B2 JP4152485 B2 JP 4152485B2
Authority
JP
Japan
Prior art keywords
lubricating oil
gear transmission
variable pitch
pitch propeller
shaft
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
Application number
JP16272798A
Other languages
Japanese (ja)
Other versions
JPH11324882A (en
Inventor
吉雄 上村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Plant Systems and Services Corp
Original Assignee
Toshiba Plant Systems and Services Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Plant Systems and Services Corp filed Critical Toshiba Plant Systems and Services Corp
Priority to JP16272798A priority Critical patent/JP4152485B2/en
Publication of JPH11324882A publication Critical patent/JPH11324882A/en
Application granted granted Critical
Publication of JP4152485B2 publication Critical patent/JP4152485B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Description

【０００１】
【発明の属する技術分野】
本発明は、水力機械等における可変ピッチプロペラの回転主軸に対する羽根の取付角を変更させるための駆動装置に関する。
【０００２】
【従来の技術】
水車やポンプあるいはブロワ等においては、回転主軸に対する羽根の取付角度を任意に変更できる可変ピッチプロペラを使用し、その羽根の取付角度を変化させることによって出力や負荷の調整を行うことが出来るようにしたものがある。
【０００３】
それはたとえば図３に示すように、中空状に形成された回転主軸１の一端に、複数の羽根２を放射状に装着したランナボス３が一体的に結合してあり、上記各羽根２の支持軸が上記ランナボス３内において軸線回りに回動自在に軸支されている。上記回転主軸１内には操作ロッド４が軸線方向にのみ移動可能に同心状に配設され、この操作ロッド４の下端に固着されたアームがリンク及びレバー機構を介して前記羽根２の各支持軸に連結されている。さらに、回転主軸１の頂端部には、本発明にかかる可変ピッチプロペラ駆動装置の作動機構５が固着されており、この作動機構５への入力軸６が、カップリング及び中間軸を介して、静止部に設けられた電動機７に連結されている。作動機構５の下方から出る出力軸８は、回転主軸１内に固着された推力軸受９によって支持され、その先端は前記操作ロッド４の頂部に螺合されている。
【０００４】
上記作動機構５の構造は、たとえば特開平５−８７０３７号公報に記載された図４のようになっている。すなわち、回転主軸１の頂端部に固着されたケース１０の上部から、前記入力軸６と、この入力軸６と同心をなし静止部に支持された固定軸１１が入っている。ケース１０と固定軸１１の間および固定軸１１と入力軸６の間は、それぞれ軸受１２および１３によって回転自在に支持されている。また、ケース１０の下部からは出力軸８が出、これらのあいだは軸受１４によって回転自在となっている。これら固定軸１１と入力軸６および出力軸８の間に、太陽歯車、遊星歯車、内歯歯車等からなる歯車伝動装置１５が設けられている。
【０００５】
このような構造によって電動機７を駆動して固定軸１１に対して入力軸６を回転させると、歯車伝動装置１５の作用によってケース１０すなわち回転主軸１と出力軸８との間に相対的な回転が発生し、操作ロッド４が軸線方向に移動し、ランナボス３内のリンク及びレバー機構を介して各羽根２の取付角度が変化させられる。他方、電動機７を停止し、固定軸１１に対して入力軸６を回転させないときは、同じく歯車伝動装置１５の作用によって回転主軸１と出力軸８が一体で回転し、操作ロッド４の軸線方向の移動がなく、各羽根２の取付角度は一定に維持される。
【０００６】
【発明が解決しようとする課題】
このような可変ピッチプロペラ駆動装置においては、その作動機構５のケース１０内には潤滑油１６が貯留されて、各軸受１２、１３、１４や歯車伝動装置１５の潤滑を行っている。しかし、回転主軸１すなわちケース１０が回転すると潤滑油１６も旋回し、この旋回による遠心作用によって潤滑油１６の液面は図４のように回転放物面となり、中央部液面が低下するので、油量が少ないときや回転速度が高いときは、歯車伝動装置１５の一部が潤滑油１６から露出して潤滑不足になることがある。
【０００７】
また、上部の軸受１２、１３に対する給油は、特開平６−１７３８３９号公報に記載されているように、本願図４を参照して説明すると、先端部に潤滑油吸入口１７を有し腕部１８に放射方向に延びる潤滑油流通孔１９を有する給油ディスク２０を固定軸１１に取付け、固定軸１１と入力軸６のあいだに前記軸受１２、１３と前記潤滑油流通孔１９を連通する筒状間隙２１を設け、潤滑油吸入口１７を潤滑油１６の旋回流に浸すことによって行うようにしたものがある。しかし、前述のように潤滑油１６の液面形状は変動するので、状況によっては潤滑油吸入口が潤滑油１６の旋回流から露出し軸受が潤滑不足になることがある。
【０００８】
そこで本発明は、歯車伝動装置や軸受が潤滑油不足となることを防止することの出来る可変ピッチプロペラ駆動装置を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するために請求項１に記載の発明は、回転主軸と同心状に配設された出力軸を前記回転主軸と相対的に回転させることにより回転主軸に取付けられた可変ピッチ羽根の取付角度を変化させるようにした可変ピッチプロペラ駆動装置において、前記出力軸に連結された歯車伝動装置およびこの歯車伝動装置を潤滑する潤滑油を収納するとともに回転主軸に固着されたケースと、このケースの内側に取付けられ前記歯車伝動装置の上部に設けられた潤滑油仕切板と、前記ケース内に貫入された固定軸と、先端部に潤滑油吸入口が形成されて内部に放射方向に延びる潤滑油流通孔を有しスライド式に長さが変えられるように構成された腕部を有し少なくとも前記潤滑油吸入口が潤滑油に浸るように前記固定軸に取付けられた給油ディスクとを備え、この給油ディスクの前記腕部に前記潤滑油流通孔内の潤滑油の流れを検出する流体センサを設けた構成とする。
【００１０】
請求項１に記載の発明は上記のように、歯車伝動装置を潤滑する潤滑油を収納するとともに回転主軸に固着されたケースの内側に取付けられ前記歯車伝動装置の上部に設けられた潤滑油仕切板を備えるとともに、ケース内に貫入された固定軸に取付けられた給油ディスクの腕部に潤滑油流通孔内の潤滑油の流れを検出する流体センサを設けた構成とし、回転主軸すなわちケースが回転したときの潤滑油液面の回転放物面化が緩和され、歯車伝動装置の中心部が潤滑油から露出することがなくなるとともに、腕部をスライド式に長さが変えられるように構成したので、万一ケース内の潤滑油が少ないときはそれを検知し、潤滑油不足を防止することが出来、油量の変化に応じて腕部をスライドさせ最適な長さに設定することを可能とした。
【００１５】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。
図１に示すように、本発明の実施の形態の可変ピッチプロペラ駆動装置においては、ケース１０の内側に潤滑油仕切板２２を取付ける。この潤滑油仕切板２２は、歯車伝動装置１５の上に位置させ、中心には固定軸１１の外径よりも大きい孔があけてある。
【００１６】
また、固定軸１１に給油ディスク２０を取付け、その腕部１８に流体センサー２３を取り付ける。この流体センサー２３としてはサーミスター（熱抵抗素子）によるものが好適に使用しうる。流体センサー２３を囲んで、腕部１８から固定軸１１にまたがる沈静カバー２４を設け、流体センサー２３のリード線はこの沈静カバー２４の内側で、固定軸１１にあけられたリード孔に導入される。沈静カバー２４は、潤滑油の飛沫からリード線を保護する。リード線は外の静止部に引き出され、静止部に設けられた測定器や監視装置に接続される。この給油ディスク２０の詳細を図２に示す。図示のように、腕部１８はスライド式にして長さが変えられるようにしてある。
【００１７】
このような構成の可変ピッチプロペラ駆動装置においては、回転主軸すなわちケースが回転してケース内側面に近い周辺部の潤滑油が上昇しようとしても、潤滑油仕切板２２によってそれが阻まれる。そのため潤滑油液面形状は、図１に示すように、潤滑油仕切板２２を境にして不連続となり、中心部の低下が緩和される。その結果、歯車伝動装置１５の中心部が潤滑油から露出することがなくなる。
【００１８】
また、給油ディスク２０の腕部１８に流体センサー２３を取り付けたので、潤滑油流通孔１９内を潤滑油が流れているか否かを検出することができ、この潤滑油の流れは潤滑油吸入口１７からの吸込み量によるので、したがってケース内の潤滑油が少ないときはそれを検知することが出来る。こうして外部静止部から潤滑油量を監視することが出来る。
【００１９】
【発明の効果】
以上のように、本発明の可変ピッチプロペラ駆動装置においては歯車伝動装置や軸受が潤滑油不足となることを防止することが出来る。
【図面の簡単な説明】
【図１】本発明の実施の形態の可変ピッチプロペラ駆動装置の断面図
【図２】本発明の実施の形態の可変ピッチプロペラ駆動装置において用いる給油ディスクの断面図
【図３】本発明の適用される可変ピッチプロペラ水車の概略構成図
【図４】従来の可変ピッチプロペラ駆動装置の断面図
【符号の説明】
１…回転主軸、２…羽根、３…ランナボス、４…操作ロッド、５…作動機構、６…入力軸、７…電動機、８…出力軸、９…推力軸受、１０…ケース、１１…固定軸、１２，１３，１４…軸受、１５…歯車伝動装置、１６…潤滑油、１７…潤滑油吸入口、１８…腕部、１９…潤滑油流通孔、２０…給油ディスク、２１…筒状間隙、２２…潤滑油仕切板、２３…流体センサー、２４…沈静カバー。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a driving device for changing a mounting angle of a blade with respect to a rotation main shaft of a variable pitch propeller in a hydraulic machine or the like.
[0002]
[Prior art]
In water turbines, pumps, blowers, etc., a variable pitch propeller that can arbitrarily change the blade mounting angle with respect to the rotating spindle is used, and the output and load can be adjusted by changing the blade mounting angle. There is what I did.
[0003]
For example, as shown in FIG. 3, a runner boss 3 in which a plurality of blades 2 are mounted radially is integrally connected to one end of a hollow rotating main shaft 1, and the support shafts of the blades 2 are connected to each other. The runner boss 3 is rotatably supported around an axis. An operating rod 4 is concentrically disposed in the rotating main shaft 1 so as to be movable only in the axial direction, and an arm fixed to the lower end of the operating rod 4 supports each of the blades 2 via a link and a lever mechanism. It is connected to the shaft. Further, the operating mechanism 5 of the variable pitch propeller driving device according to the present invention is fixed to the top end portion of the rotating main shaft 1, and the input shaft 6 to the operating mechanism 5 is connected via the coupling and the intermediate shaft. It is connected to an electric motor 7 provided in the stationary part. An output shaft 8 coming out from below the operation mechanism 5 is supported by a thrust bearing 9 fixed in the rotary main shaft 1, and its tip is screwed to the top of the operation rod 4.
[0004]
The structure of the operating mechanism 5 is, for example, as shown in FIG. 4 described in JP-A-5-87037. That is, the input shaft 6 and the fixed shaft 11 that is concentric with the input shaft 6 and supported by the stationary portion enter from the upper part of the case 10 fixed to the top end portion of the rotary main shaft 1. Between the case 10 and the fixed shaft 11 and between the fixed shaft 11 and the input shaft 6 are rotatably supported by bearings 12 and 13, respectively. Further, the output shaft 8 protrudes from the lower part of the case 10, and between these, the bearing 14 can rotate. Between the fixed shaft 11 and the input shaft 6 and the output shaft 8, a gear transmission 15 including a sun gear, a planetary gear, an internal gear and the like is provided.
[0005]
When the electric motor 7 is driven by such a structure and the input shaft 6 is rotated with respect to the fixed shaft 11, relative rotation between the case 10, that is, the rotary main shaft 1 and the output shaft 8 is performed by the action of the gear transmission 15. Occurs, the operating rod 4 moves in the axial direction, and the mounting angle of each blade 2 is changed via the link and lever mechanism in the runner boss 3. On the other hand, when the electric motor 7 is stopped and the input shaft 6 is not rotated with respect to the fixed shaft 11, the rotary main shaft 1 and the output shaft 8 are rotated integrally by the action of the gear transmission 15, and the axial direction of the operating rod 4 The movement angle of each blade 2 is kept constant.
[0006]
[Problems to be solved by the invention]
In such a variable pitch propeller drive device, the lubricating oil 16 is stored in the case 10 of the operating mechanism 5 to lubricate the bearings 12, 13, 14 and the gear transmission 15. However, when the rotating main shaft 1, that is, the case 10 rotates, the lubricating oil 16 also turns, and the liquid level of the lubricating oil 16 becomes a paraboloid as shown in FIG. When the amount of oil is small or the rotational speed is high, a part of the gear transmission 15 may be exposed from the lubricating oil 16 and the lubrication may be insufficient.
[0007]
Moreover, oil supply to the upper bearing 12 and 13, as described in JP-A-6 -173839, referring to the present FIG. 4, the arm portion has a lubricating oil suction port 17 at the tip portion An oil supply disk 20 having a lubricating oil circulation hole 19 extending in the radial direction is attached to the fixed shaft 11, and the bearings 12, 13 communicate with the lubricating oil circulation hole 19 between the fixed shaft 11 and the input shaft 6. There is a type in which a gap 21 is provided and the lubricating oil suction port 17 is immersed in a swirling flow of the lubricating oil 16. However, since the liquid level shape of the lubricating oil 16 varies as described above, the lubricating oil suction port may be exposed from the swirling flow of the lubricating oil 16 and the bearing may be insufficiently lubricated depending on the situation.
[0008]
Therefore, an object of the present invention is to provide a variable pitch propeller drive device that can prevent a gear transmission and a bearing from becoming insufficient in lubricating oil.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 in order to achieve the above object, the variable pitch vanes attached only is the rotary spindle by relatively rotating the output shaft disposed in the rotational spindle and coaxially with said rotary spindle the variable pitch propeller drive device so as to vary the mounting angle of the anchored case rotary spindle with accommodating the lubricating oil to lubricate the gear transmission and the gear transmission coupled to the output shaft, this A lubricating oil partition plate attached to the inside of the case and provided at the top of the gear transmission, a fixed shaft penetrating into the case, and a lubricating oil suction port formed at the tip, extending radially inside. refueling di lubricating oil through channels possess have arms that are configured such that the length in sliding is changed at least the lubricating oil inlet is attached to the fixed shaft so immersed in the lubricating oil And a click, a structure in which a fluid sensor for detecting the flow of the lubricating oil in the lubricating oil circulating within the hole in the arm of the refueling disc.
[0010]
According to the first aspect of the present invention, as described above, the lubricating oil partition for storing the lubricating oil for lubricating the gear transmission and attached to the inner side of the case fixed to the rotating main shaft is provided at the upper portion of the gear transmission. In addition to having a plate, the arm of the oil supply disc attached to the fixed shaft that penetrates into the case is provided with a fluid sensor that detects the flow of the lubricating oil in the lubricating oil circulation hole, and the rotating main shaft, that is, the case rotates. As a result, the rotational paraboloid of the lubricating oil level is reduced, the central part of the gear transmission is not exposed from the lubricating oil, and the length of the arm part can be changed to a sliding type. In the unlikely event that there is little lubricating oil in the case, it can be detected and the lack of lubricating oil can be prevented, and it is possible to set the optimal length by sliding the arm according to changes in the oil amount I did .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
As shown in FIG. 1, in the variable pitch propeller drive device according to the embodiment of the present invention, a lubricating oil partition plate 22 is attached to the inside of the case 10. The lubricating oil partition plate 22 is positioned on the gear transmission 15, and a hole larger than the outer diameter of the fixed shaft 11 is formed at the center.
[0016]
Further, the oil supply disk 20 is attached to the fixed shaft 11, and the fluid sensor 23 is attached to the arm portion 18. As the fluid sensor 23, a thermistor (thermal resistance element) can be preferably used. A calming cover 24 that surrounds the fluid sensor 23 and extends from the arm 18 to the fixed shaft 11 is provided, and a lead wire of the fluid sensor 23 is introduced into a lead hole formed in the fixed shaft 11 inside the calming cover 24. . The calming cover 24 protects the lead wire from the splash of lubricating oil. The lead wire is drawn out to an external stationary part and connected to a measuring instrument or a monitoring device provided in the stationary part. The details of the oiling disc 20 are shown in FIG. As shown in the figure, the arm portion 18 is slidable so that the length can be changed.
[0017]
In the variable pitch propeller driving device having such a configuration, even if the rotation main shaft, that is, the case rotates, and the lubricating oil in the peripheral portion near the inner surface of the case rises, it is blocked by the lubricating oil partition plate 22. Therefore, as shown in FIG. 1, the lubricating oil liquid surface shape becomes discontinuous with the lubricating oil partition plate 22 as a boundary, and the lowering of the central portion is alleviated. As a result, the central portion of the gear transmission 15 is not exposed from the lubricating oil.
[0018]
Further, since the fluid sensor 23 is attached to the arm portion 18 of the oil supply disk 20, it can be detected whether or not the lubricating oil is flowing in the lubricating oil circulation hole 19, and the flow of the lubricating oil is determined by the lubricating oil suction port. Therefore, when the amount of lubricating oil in the case is small, it can be detected. Thus, the amount of lubricating oil can be monitored from the external stationary part.
[0019]
【The invention's effect】
As described above, in the variable pitch propeller drive device of the present invention, it is possible to prevent the gear transmission and the bearing from becoming insufficient in lubricating oil.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a variable pitch propeller drive device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of an oil supply disk used in the variable pitch propeller drive device according to an embodiment of the present invention. Fig. 4 is a schematic configuration diagram of a variable pitch propeller turbine used. Fig. 4 is a cross-sectional view of a conventional variable pitch propeller drive device.
DESCRIPTION OF SYMBOLS 1 ... Rotation main shaft, 2 ... Blade | wing, 3 ... Runner boss, 4 ... Operation rod, 5 ... Actuation mechanism, 6 ... Input shaft, 7 ... Electric motor, 8 ... Output shaft, 9 ... Thrust bearing, 10 ... Case, 11 ... Fixed shaft , 12, 13, 14 ... bearings, 15 ... gear transmission, 16 ... lubricating oil, 17 ... lubricating oil inlet, 18 ... arm portion, 19 ... lubricating oil flow hole, 20 ... oil supply disk, 21 ... cylindrical gap, 22 ... Lubricating oil partition plate, 23 ... Fluid sensor, 24 ... Calm cover.

Claims (1)

回転主軸と同心状に配設された出力軸を前記回転主軸と相対的に回転させることにより回転主軸に取付けられた可変ピッチ羽根の取付角度を変化させるようにした可変ピッチプロペラ駆動装置において、前記出力軸に連結された歯車伝動装置およびこの歯車伝動装置を潤滑する潤滑油を収納するとともに回転主軸に固着されたケースと、このケースの内側に取付けられ前記歯車伝動装置の上部に設けられた潤滑油仕切板と、前記ケース内に貫入された固定軸と、先端部に潤滑油吸入口が形成されて内部に放射方向に延びる潤滑油流通孔を有しスライド式に長さが変えられるように構成された腕部を有し少なくとも前記潤滑油吸入口が潤滑油に浸るように前記固定軸に取付けられた給油ディスクとを備え、この給油ディスクの前記腕部に前記潤滑油流通孔内の潤滑油の流れを検出する流体センサを設けたことを特徴とする可変ピッチプロペラ駆動装置。The variable pitch propeller drive device so as to vary the mounting angle of the variable-pitch vanes attached only is the rotary spindle by the output shaft which is disposed on the rotation spindle and coaxially is relatively rotated with the rotary spindle, a case fixed to the rotating spindle together with the housing a lubricating oil for lubricating the gear transmission and the gear transmission coupled to the output shaft, provided in the upper portion of the attached to the inside of the case the gear transmission and the lubricating oil partition plate, a fixed shaft which is penetrated into the casing, such that the length changed lubricating oil inlet is formed on the sliding have a lubricating oil flow hole extending inside in the radial direction at the tip portion at least the lubricating oil inlet has an arm portion configured that a fuel supply disk mounted on said stationary shaft so immersed in the lubricating oil, the Jun to the arm portion of the fuel supply disk Variable pitch propeller drive apparatus characterized in that a fluid sensor for detecting the flow of the lubricating oil in the oil distribution bore.
JP16272798A 1998-05-07 1998-05-07 Variable pitch propeller drive unit Expired - Lifetime JP4152485B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16272798A JP4152485B2 (en) 1998-05-07 1998-05-07 Variable pitch propeller drive unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16272798A JP4152485B2 (en) 1998-05-07 1998-05-07 Variable pitch propeller drive unit

Publications (2)

Publication Number Publication Date
JPH11324882A JPH11324882A (en) 1999-11-26
JP4152485B2 true JP4152485B2 (en) 2008-09-17

Family

ID=15760134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16272798A Expired - Lifetime JP4152485B2 (en) 1998-05-07 1998-05-07 Variable pitch propeller drive unit

Country Status (1)

Country Link
JP (1) JP4152485B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100455407C (en) * 2002-07-29 2009-01-28 日本精工株式会社 Rolling bearing, grease replenishing device, main shaft device, grease replenishing method, and grease replenishing program
AU2003254779A1 (en) 2002-07-29 2004-02-16 Nsk Ltd. Rolling bearing, grease replenishing device, main shaft device, grease replenishing method, and grease replenishing program
CN110350699A (en) * 2019-07-15 2019-10-18 太仓市海谷五金机电设备有限公司 A kind of variable speed energy conservation motor

Also Published As

Publication number Publication date
JPH11324882A (en) 1999-11-26

Similar Documents

Publication Publication Date Title
JP2745236B2 (en) Variable pitch fan
CA2385897C (en) Variable flow impeller-type water pump with movable shroud
JP4152485B2 (en) Variable pitch propeller drive unit
CA2405669C (en) Variable flow water pump
CA2397988C (en) Variable flow water pump
US9217436B2 (en) Impeller fan assembly
US10240609B2 (en) Screw pump and impeller fan assemblies and method of operating
CN209309000U (en) A kind of fan bearing self-regulation lubrication system
JPH08505341A (en) Rotating machine parts, especially rotors for propellers for cycloid ships
US5088887A (en) Turbine with spur gearing
JPS59190521A (en) Viscous fluid joint
JP2903641B2 (en) Water turbine bearing device
JP2911697B2 (en) Variable pitch propeller drive
JP3524623B2 (en) Friction type continuously variable transmission
US5234014A (en) Fuel control governor
CN214200227U (en) Gas turbine flowmeter with diagnosis function
CN114906308B (en) Electric propeller for ship
CN220551285U (en) Spiral impeller assembly for self-cooled axial flow pump
CN212583950U (en) Oil supply mechanism of variable frequency compressor
CN117722374A (en) Circulating cooling water pump of automobile engine and adjusting system thereof
JPH041485A (en) Scroll compressor
JPH0443139Y2 (en)
JPS59211765A (en) Movable blade tubular water turbine
JPH0553957B2 (en)
CN117365883A (en) Pitch bearing self-lubricating device for wind turbine generator

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20040319

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050425

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20050526

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20050526

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071102

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071113

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080115

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080701

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080702

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110711

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110711

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110711

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120711

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130711

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term