JPH09236084A - Swinging plate type compressor - Google Patents
Swinging plate type compressorInfo
- Publication number
- JPH09236084A JPH09236084A JP8041829A JP4182996A JPH09236084A JP H09236084 A JPH09236084 A JP H09236084A JP 8041829 A JP8041829 A JP 8041829A JP 4182996 A JP4182996 A JP 4182996A JP H09236084 A JPH09236084 A JP H09236084A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- supporting
- oscillating plate
- support member
- support
- 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.)
- Withdrawn
Links
Landscapes
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一般に揺動板と呼
ばれる部品を駆動機構により揺動させ、この揺動板の揺
動によりピストンをシリンダ内で往復動させて圧縮作用
を得る揺動板式圧縮機に関し、特にその揺動板式圧縮機
における振動対策に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating plate type in which a component generally called an oscillating plate is oscillated by a drive mechanism, and the oscillating plate oscillates a piston to reciprocate in a cylinder to obtain a compression action. The present invention relates to a compressor, and more particularly, to measures against vibrations in the oscillating plate compressor.
【０００２】[0002]
【従来の技術】この種の圧縮機は、例えば自動車用空調
装置に使用されており、図６に示すように、シリンダ１
と支持孔２とを有する金属製のシリンダブロック３、そ
のシリンダ１に嵌挿されたピストン４、支持孔２に挿入
された金属製の支持部材５、この支持部材５に球体１０
を介してギヤーの噛み合いにより揺動可能ではあるが回
転不能に支持され、揺動時にピストン４に往復動力を伝
える揺動板６、及びこの揺動板６を揺動させる駆動機構
を含んでいる。駆動機構は、回転主軸７の一端に回転斜
板８を固着し、その回転斜板８の軸方向一端に設けた斜
面８ａを揺動板６に支持部材５とは反対側から対向させ
たものである。なお支持部材５と揺動板６とはギヤーの
噛み合いにより結合されているため支持部材５に軸回り
の力が加わるが、支持部材５はシリンダブロック３に金
属製のキー９を介して結合することで軸回りの回転を規
制されている。2. Description of the Related Art A compressor of this type is used, for example, in an air conditioner for an automobile, and as shown in FIG.
And a support hole 2 made of metal, a cylinder block 3, a piston 4 fitted in the cylinder 1, a support member 5 made of metal inserted in the support hole 2, and a spherical body 10 in the support member 5.
It includes a swing plate 6 which is swingably supported by the meshing of gears through a gear but is non-rotatably supported and which transmits reciprocating power to the piston 4 at the time of swing, and a drive mechanism which swings the swing plate 6. . The drive mechanism is one in which a rotary swash plate 8 is fixed to one end of a rotary main shaft 7, and a slope 8a provided on one end of the rotary swash plate 8 in the axial direction is opposed to the swing plate 6 from the side opposite to the support member 5. Is. Since the support member 5 and the oscillating plate 6 are connected by the meshing of gears, a force around the axis is applied to the support member 5, but the support member 5 is connected to the cylinder block 3 via the metal key 9. Therefore, the rotation around the axis is restricted.
【０００３】今、回転主軸７が自動車エンジンなどによ
り回転駆動されると、それに伴う回転斜板８の回転にし
たがって揺動板６が回転することなく揺動する。この揺
動板６の揺動によりピストン４がシリンダ１内で往復動
し、冷凍回路の冷媒等を圧縮する。Now, when the rotating main shaft 7 is rotationally driven by an automobile engine or the like, the rocking plate 6 rocks without rotating in accordance with the rotation of the rotating swash plate 8. Due to the swing of the swing plate 6, the piston 4 reciprocates in the cylinder 1 to compress the refrigerant and the like in the refrigeration circuit.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上述の圧
縮機においては、支持部材５とシリンダブロック３との
間は金属同士の接触となるため、圧縮機の運転に伴って
生じる機械的振動が、圧縮機の内部で減衰されることな
く外部にまで伝達され、自動車の車室内の騒音の原因と
なる場合がある。However, in the above-mentioned compressor, since the support member 5 and the cylinder block 3 are in metal-to-metal contact with each other, mechanical vibration caused by the operation of the compressor is compressed. The noise may be transmitted to the outside without being damped inside the machine and may cause noise in the passenger compartment of the automobile.
【０００５】それ故に本発明の課題は、運転に伴って内
部で発生する振動を内部で減衰する振動減衰機構を備
え、これにより外部への振動伝達を減少した揺動板式圧
縮機を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an oscillating plate compressor which is provided with a vibration damping mechanism for internally damping the vibration internally generated during operation, thereby reducing the vibration transmission to the outside. It is in.
【０００６】本発明の他の課題は、シリンダブロックに
対する支持部材の軸回りの回動を上述した振動減衰機構
により規制した揺動板式圧縮機を提供することにある。Another object of the present invention is to provide an oscillating plate compressor in which the rotation of the support member with respect to the cylinder block about the axis is restricted by the above-described vibration damping mechanism.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、シリン
ダと支持孔とを有するシリンダブロック、前記シリンダ
に嵌挿されたピストン、前記支持孔に挿入された支持部
材、前記支持部材に揺動可能にかつ回転不能に支持さ
れ、揺動時に前記ピストンに往復動力を伝える揺動板、
及び前記揺動板を揺動させる駆動機構を含む揺動板式圧
縮機において、前記支持孔の孔壁面と前記支持部材との
間に弾性材を介装し、前記支持部材が前記支持孔の孔軸
回りでの回動力を受けた際には前記支持部材の外周面が
前記弾性材を介して前記支持孔の孔壁面に係合するよう
に構成したことを特徴とする揺動板式圧縮機が得られ
る。According to the present invention, a cylinder block having a cylinder and a support hole, a piston fitted into the cylinder, a support member inserted into the support hole, and a swinging motion of the support member. A rocking plate that is rotatably and non-rotatably supported and that transmits reciprocating power to the piston when rocking,
And an oscillating plate compressor including a drive mechanism for oscillating the oscillating plate, wherein an elastic material is interposed between the hole wall surface of the supporting hole and the supporting member, and the supporting member has the hole of the supporting hole. An oscillating plate compressor is characterized in that, when a rotating force around an axis is received, the outer peripheral surface of the supporting member is configured to engage with the hole wall surface of the supporting hole via the elastic material. can get.
【０００８】この場合、前記支持孔の孔壁面と前記支持
部材の外周面に前記孔軸回りで互いに反対側を向いた対
向面を設け、前記対向面間に前記弾性材を介在させると
よい。In this case, it is preferable that opposed surfaces facing opposite sides around the hole axis are provided on the hole wall surface of the support hole and the outer peripheral surface of the support member, and the elastic material is interposed between the opposed surfaces.
【０００９】また前記支持孔の孔壁面に径方向の凹部を
設け、前記支持部材の外周面には前記凹部に対応した径
方向の凸部を設け、前記凹部と前記凸部との間に前記弾
性材を介在させてもよい。Further, a radial concave portion is provided on a hole wall surface of the support hole, and a radial convex portion corresponding to the concave portion is provided on an outer peripheral surface of the support member, and the radial convex portion is provided between the concave portion and the convex portion. You may interpose an elastic material.
【００１０】また前記支持孔及び前記支持部材はいずれ
も横断面形状が角形であり、前記支持孔の孔壁面と前記
支持部材の外周面との間には全周に亘って前記弾性材が
備えられてもよい。Each of the support hole and the support member has a rectangular cross section, and the elastic material is provided over the entire circumference between the hole wall surface of the support hole and the outer peripheral surface of the support member. You may be asked.
【００１１】ここで前記横断面形状は矩形であることが
好ましい。また前記支持部材は前記支持孔の孔軸方向で
の一端で前記揺動板を支持するものであり、前記支持孔
及び前記支持部材はいずれも孔軸方向での一端に比べて
他端が小径とされたテーパ状を呈していることも好まし
い。Here, the cross-sectional shape is preferably rectangular. Further, the support member supports the rocking plate at one end of the support hole in the hole axis direction, and the support hole and the support member each have a smaller diameter at the other end than one end in the hole axis direction. It is also preferable that it has a tapered shape.
【００１２】[0012]
【発明の実施の形態】図１及び図２は本発明の実施の一
形態による揺動板圧縮機を示す。この揺動板式圧縮機
は、例えば自動車用空調装置に使用されるものであり、
周辺部に形成した複数のシリンダ１１と中央部に形成し
た一つの支持孔１２とを有する金属製のシリンダブロッ
ク１３を含んでいる。各シリンダ１１にはピストン１４
が嵌挿されている。支持孔１２には金属製の支持部材１
５が挿入されている。この支持部材１５には揺動板１６
が球体２２を介してギヤー１５ａ，１６ａの噛み合いに
より揺動可能ではあるが回転不能に支持されている。揺
動板１６は揺動時にピストン１４に往復動力を伝える。
この揺動板１６を揺動させる駆動機構は、回転主軸１７
の一端に回転斜板１８を固着し、その回転斜板１８の軸
方向一端に設けた斜面１８ａを揺動板１６に支持部材１
５とは反対側から対向させたものである。1 and 2 show an oscillating plate compressor according to an embodiment of the present invention. This oscillating plate compressor is used, for example, in an air conditioner for automobiles,
It includes a metal cylinder block 13 having a plurality of cylinders 11 formed in the peripheral portion and one support hole 12 formed in the central portion. Each cylinder 11 has a piston 14
Is inserted. The support hole 12 has a metal support member 1
5 is inserted. The support member 15 includes a swing plate 16
Is supported by a mesh of gears 15a and 16a via a spherical body 22 so as to be swingable but non-rotatable. The rocking plate 16 transmits reciprocating power to the piston 14 when rocking.
The drive mechanism for swinging the swing plate 16 includes a rotary spindle 17
A rotary swash plate 18 is fixed to one end of the support member 1.
5 is opposed from the opposite side.
【００１３】支持部材１５と揺動板１６とはギヤー１５
ａ，１６ａの噛み合いにより結合されているため支持部
材１５に軸回りの力が加わるが、支持部材１５はシリン
ダブロック１３に対し、後述する回転規制機構により、
軸回りの回転を規制されている。なお２０は支持部材１
５を揺動板１６側に弾力をもって押圧する圧縮バネであ
る。The support member 15 and the oscillating plate 16 are gears 15
Since a force around the axis is applied to the support member 15 because they are connected by the engagement of a and 16a, the support member 15 is applied to the cylinder block 13 by a rotation restriction mechanism described later.
Rotation around the axis is restricted. 20 is a supporting member 1
5 is a compression spring that elastically presses 5 toward the oscillating plate 16.
【００１４】今、回転主軸１７が自動車エンジンなどに
より回転駆動されると、それに伴う回転斜板１８の回転
にしたがって揺動板１６が回転することなく揺動する。
この揺動板１６の揺動によりピストン１４がシリンダ１
１内で往復動し、冷凍回路の冷媒等を圧縮する。Now, when the rotary main shaft 17 is rotationally driven by an automobile engine or the like, the rocking plate 16 rocks without rotating in accordance with the rotation of the rotary swash plate 18.
The swing of the swing plate 16 causes the piston 14 to move to the cylinder 1.
It reciprocates in 1 to compress the refrigerant and the like in the refrigeration circuit.
【００１５】次に、図１及び図２に加えて図３及び図４
をも参照して、支持部材１５のシリンダブロック１３に
対する軸回りの回転を規制する回転規制機構について説
明する。Next, in addition to FIGS. 1 and 2, FIGS.
With reference to also, a rotation restriction mechanism that restricts rotation of the support member 15 about the axis with respect to the cylinder block 13 will be described.
【００１６】まず支持部材１５のうち、シリンダブロッ
ク１３の支持孔１２に挿入される部分、即ち、シャンク
部１５ｂをその横断面形状が矩形であるように作る。こ
こで、シャンク部１５ｂは全長に亘って実質的に均一な
寸法をもつものとする。First, a portion of the support member 15 to be inserted into the support hole 12 of the cylinder block 13, that is, a shank portion 15b is made so that its cross-sectional shape is rectangular. Here, the shank portion 15b is assumed to have a substantially uniform dimension over the entire length.
【００１７】さらにシャンク部１５ｂの外周全域にゴム
等の弾性材（ラバーブッシュ）２１を振動減衰部材とし
て接着などにより備える。弾性材２１は全域に亘って実
質的に均一な厚みをもつものとする。Further, an elastic material (rubber bush) 21 such as rubber is provided on the entire outer periphery of the shank portion 15b as a vibration damping member by adhesion or the like. The elastic material 21 has a substantially uniform thickness over the entire area.
【００１８】一方、シリンダブロック１３の支持孔１２
も横断面形状がシャンク部１５ｂと相似の矩形でかつ全
長に亘って実質的に均一な寸法をもつように作る。ただ
し支持孔１２の径方向の寸法は、シャンク部１５ｂのそ
れよりも十分に大きいが、シャンク部１５ｂに弾性材２
１を備えた状態でのそれと実質的に等しいかそれよりも
僅かに小さく作る。On the other hand, the support hole 12 of the cylinder block 13
Is also made to have a rectangular cross section similar to that of the shank portion 15b and to have a substantially uniform dimension over the entire length. However, although the radial dimension of the support hole 12 is sufficiently larger than that of the shank portion 15b, the elastic material 2 is not attached to the shank portion 15b.
Make it substantially equal to or slightly less than that with 1.
【００１９】そしてシャンク部１５ｂを支持孔１２に挿
入する。この結果、支持孔１２の孔壁面と支持部材１５
のシャンク部１５ｂとの間には全周に亘って弾性材２１
が介装された状態となる。Then, the shank portion 15b is inserted into the support hole 12. As a result, the hole wall surface of the support hole 12 and the support member 15
Of the elastic material 21 over the entire circumference between the shank portion 15b and the shank portion 15b.
Is inserted.
【００２０】支持部材１５が支持孔１２の孔軸回りでの
回動力を受けると、支持部材１５のシャンク部１５ｂの
外周面が弾性材２１を介して支持孔１２の孔壁面に係合
する。したがってシリンダブロック１３に対する支持部
材１５の軸回りの回動が規制される。同時に、運転に伴
って内部で発生する振動は弾性材２１に吸収されて内部
で減衰するため、外部への振動伝達が減少する。このよ
うにこの回転規制機構は振動減衰機構としても働く。When the supporting member 15 receives a turning force around the hole axis of the supporting hole 12, the outer peripheral surface of the shank portion 15b of the supporting member 15 engages with the hole wall surface of the supporting hole 12 via the elastic material 21. Therefore, the rotation of the support member 15 around the axis with respect to the cylinder block 13 is restricted. At the same time, the vibration generated inside due to the operation is absorbed by the elastic material 21 and attenuated inside, so that the vibration transmission to the outside is reduced. In this way, this rotation restricting mechanism also functions as a vibration damping mechanism.
【００２１】支持孔１２及び支持部材１５のシャンク部
１５ｂの横断面形状は、矩形に限ることなく、三角形で
あってもよいし、またその他の多角形であってもよい。The cross-sectional shape of the support hole 12 and the shank portion 15b of the support member 15 is not limited to a rectangular shape, and may be a triangular shape or another polygonal shape.
【００２２】上述した構造は、支持孔１２の孔壁面と支
持部材１５のシャンク部１５ｂの外周面に孔軸回りで互
いに反対側を向いた対向面を設け、これらの対向面間に
弾性材２１を介在させたものと見做すこともできる。In the above-mentioned structure, the wall surfaces of the support hole 12 and the outer peripheral surface of the shank portion 15b of the support member 15 are provided with facing surfaces facing each other around the hole axis, and the elastic member 21 is provided between these facing surfaces. It can also be regarded as the one in which
【００２３】また支持孔１２の孔壁面に径方向の凹部を
設け、支持部材１５のシャンク部１５ｂの外周面にはそ
の凹部に対応した径方向の凸部を設け、これらの凹部と
凸部との間に弾性材２１を介在させたものとも見做せ
る。Further, a radial concave portion is provided on the hole wall surface of the support hole 12, and a radial convex portion corresponding to the concave portion is provided on the outer peripheral surface of the shank portion 15b of the support member 15, and these concave and convex portions are formed. It can be considered that the elastic material 21 is interposed between the two.
【００２４】さらに図５に示したように、支持部材１５
のシャンク部１５ｂを、ギヤー１５ａを設けた方の端部
に比べて反対側の端部が小径とされたテーパ状に作って
もよい。この場合には、支持孔１２も記支持部材１５と
相似の形状に作ることはいうまでもない。これによれ
ば、圧縮機の組み立てが容易になる。Further, as shown in FIG. 5, the support member 15
The shank portion 15b may be formed in a tapered shape in which the end portion on the opposite side of the end portion on which the gear 15a is provided has a smaller diameter. In this case, it goes without saying that the support hole 12 is also formed in a shape similar to the support member 15. This facilitates assembly of the compressor.
【００２５】なお弾性材２１を支持孔１２の孔壁面に備
えてから支持部材１５のシャンク部１５ｂを支持孔１２
に挿入するようにしてもよい。また弾性材２１として、
様々な材料を使用し得ることは言うまでもない。The elastic member 21 is provided on the wall surface of the support hole 12 and then the shank portion 15b of the support member 15 is attached to the support hole 12.
It may be inserted into. As the elastic material 21,
It goes without saying that various materials can be used.
【００２６】[0026]
【発明の効果】以上説明したように、本発明によれば、
運転に伴って内部で発生する振動が内部で減衰されるの
で外部への振動伝達が減少し、また同時にシリンダブロ
ックに対する支持部材の軸回りの回動が規制された揺動
板式圧縮機を提供できる。As described above, according to the present invention,
Since the vibration generated inside due to the operation is internally damped, the vibration transmission to the outside is reduced, and at the same time, it is possible to provide the oscillating plate compressor in which the rotation of the support member with respect to the cylinder block around the axis is restricted. .
【図１】本発明の実施の一形態による揺動板式圧縮機の
要部のみの縦断面図。FIG. 1 is a vertical cross-sectional view of only a main part of an oscillating plate compressor according to an embodiment of the present invention.
【図２】図１の揺動板式圧縮機に使用したシリンダブロ
ックのII−II線に沿った断面図。2 is a sectional view taken along line II-II of a cylinder block used in the oscillating plate compressor of FIG.
【図３】図１の揺動板式圧縮機に使用された支持部材に
弾性材を備えた状態を要部の断面を伴って示した側面
図。FIG. 3 is a side view showing a state in which a supporting member used in the oscillating plate compressor of FIG. 1 is provided with an elastic material, along with a cross section of a main part.
【図４】図３のIV−IV線に沿った断面図。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;
【図５】図１の揺動板式圧縮機に使用可能な支持部材の
他の例の側面図。5 is a side view of another example of a supporting member that can be used in the oscillating plate compressor of FIG.
【図６】従来の揺動板式圧縮機の要部のみの縦断面図。FIG. 6 is a vertical sectional view of only a main part of a conventional rocking plate compressor.
１１ シリンダ １２ 支持孔 １３ シリンダブロック １４ ピストン １５ 支持部材 １６ 揺動板 １７ 回転主軸 １８ 回転斜板 ２１ 弾性材 ２２ 球体 11 Cylinder 12 Support Hole 13 Cylinder Block 14 Piston 15 Support Member 16 Swing Plate 17 Rotating Spindle 18 Rotating Swash Plate 21 Elastic Material 22 Sphere
Claims (6)
ロック、前記シリンダに嵌挿されたピストン、前記支持
孔に挿入された支持部材、前記支持部材に揺動可能にか
つ回転不能に支持され、揺動時に前記ピストンに往復動
力を伝える揺動板、及び前記揺動板を揺動させる駆動機
構を含む揺動板式圧縮機において、前記支持孔の孔壁面
と前記支持部材との間に弾性材を介装し、前記支持部材
が前記支持孔の孔軸回りでの回動力を受けた際には前記
支持部材の外周面が前記弾性材を介して前記支持孔の孔
壁面に係合するように構成したことを特徴とする揺動板
式圧縮機。1. A cylinder block having a cylinder and a support hole, a piston fitted in the cylinder, a support member inserted in the support hole, swingably and non-rotatably supported by the support member, and swingable. In an oscillating plate compressor including an oscillating plate that transmits reciprocating power to the piston when moving, and a drive mechanism that oscillates the oscillating plate, an elastic material is provided between the hole wall surface of the supporting hole and the supporting member. So that the outer peripheral surface of the support member engages with the hole wall surface of the support hole via the elastic material when the support member receives a turning force around the hole axis of the support hole. An oscillating plate compressor characterized in that it is configured.
周面に前記孔軸回りで互いに反対側を向いた対向面を設
け、前記対向面間に前記弾性材を介在させた請求項１記
載の揺動板式圧縮機。2. The surface of the support hole and the outer peripheral surface of the support member are provided with facing surfaces facing opposite sides around the hole axis, and the elastic material is interposed between the facing surfaces. The oscillating plate compressor described.
け、前記支持部材の外周面には前記凹部に対応した径方
向の凸部を設け、前記凹部と前記凸部との間に前記弾性
材を介在させた請求項１記載の揺動板式圧縮機。3. A radial recess is provided on a hole wall surface of the support hole, and a radial projection corresponding to the recess is provided on an outer peripheral surface of the support member, and the radial projection is provided between the recess and the projection. The oscillating plate compressor according to claim 1, wherein the elastic material is interposed.
横断面形状が角形であり、前記支持孔の孔壁面と前記支
持部材の外周面との間には全周に亘って記弾性材が備え
られている請求項１記載の揺動板式圧縮機。4. The supporting hole and the supporting member each have a rectangular cross-sectional shape, and an elastic material is provided over the entire circumference between the hole wall surface of the supporting hole and the outer peripheral surface of the supporting member. The oscillating plate compressor according to claim 1, which is provided.
載の揺動板式圧縮機。5. The oscillating plate compressor according to claim 4, wherein the cross-sectional shape is rectangular.
の一端で前記揺動板を支持するものであり、前記支持孔
及び前記支持部材はいずれも孔軸方向での一端に比べて
他端が小径とされたテーパ状を呈している請求項４又は
５記載の揺動板式圧縮機。6. The support member supports the oscillating plate at one end in the hole axis direction of the support hole, and both the support hole and the support member are compared with one end in the hole axis direction. The oscillating plate compressor according to claim 4 or 5, wherein the other end is tapered with a small diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8041829A JPH09236084A (en) | 1996-02-28 | 1996-02-28 | Swinging plate type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8041829A JPH09236084A (en) | 1996-02-28 | 1996-02-28 | Swinging plate type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09236084A true JPH09236084A (en) | 1997-09-09 |
Family
ID=12619170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8041829A Withdrawn JPH09236084A (en) | 1996-02-28 | 1996-02-28 | Swinging plate type compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09236084A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014112413A1 (en) * | 2013-01-15 | 2014-07-24 | サンデン株式会社 | Wobble plate type variable displacement compressor |
-
1996
- 1996-02-28 JP JP8041829A patent/JPH09236084A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014112413A1 (en) * | 2013-01-15 | 2014-07-24 | サンデン株式会社 | Wobble plate type variable displacement compressor |
| JP2014136969A (en) * | 2013-01-15 | 2014-07-28 | Sanden Corp | Oscillation plate type variable displacement compressor |
| DE112014000436B4 (en) | 2013-01-15 | 2019-06-13 | Sanden Holdings Corporation | Swash plate compressor with variable displacement and improved anti-rotation mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030506 |