JPH08246487A - Excavation bucket - Google Patents
Excavation bucketInfo
- Publication number
- JPH08246487A JPH08246487A JP4990495A JP4990495A JPH08246487A JP H08246487 A JPH08246487 A JP H08246487A JP 4990495 A JP4990495 A JP 4990495A JP 4990495 A JP4990495 A JP 4990495A JP H08246487 A JPH08246487 A JP H08246487A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- bucket
- bottom plate
- fixed
- free end
- 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
Landscapes
- Shovels (AREA)
- Chain Conveyers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉄鉱石、石炭等のばら
物の払出し装置の掘削バケットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating bucket for a device for dispensing bulk ore such as iron ore and coal.
【０００２】[0002]
【従来の技術】ヤードに積付けられた鉄鉱石や石炭等の
ばら物を地上コンベヤに払出すためにローダやリクレー
マーが使用されている。これらの払出し装置は、図４に
示すように、旋回、俯仰するブーム１の先端に回転駆動
されるホイール２が設けられている。このホイール２の
外周に多数のバケット３’が一定間隔を空けて取付けら
れており、ホイール２を矢印Ｒの方向に回転させること
により、バケット３’が鉱石等を堆積山から次々に掬い
取り、上部のハの位置で開放端から自然落下によりシュ
ート４に排出し、機内コンベヤ５を経て図示しない地上
コンベヤに払出しする装置である。2. Description of the Related Art A loader or a reclaimer is used to discharge loose materials such as iron ore and coal loaded in a yard to an above-ground conveyor. As shown in FIG. 4, these paying-out devices are provided with a wheel 2 which is rotationally driven at the tip of a boom 1 which is swung and raised. A large number of buckets 3 ′ are attached to the outer periphery of the wheel 2 at regular intervals, and by rotating the wheel 2 in the direction of arrow R, the bucket 3 ′ scoops ore and the like from the pile of piles one after another, It is a device that discharges the chute 4 from the open end at the position of C at the upper part by spontaneous fall, and delivers it to the ground conveyor (not shown) via the in-machine conveyor 5.
【０００３】図５および図６は前記バケット３’の構造
を示している。１１はバケット３’の底板であり、湾曲
した面で形成されている。 底板１１の両側端に側板１
２が底板１１に対して垂直に設けられている。底板１１
と側板１２の掬い面側に略コの字状に形成された刃先１
３が設けられている。１４は刃先のライナーである。そ
して、バケットの本体である底板１１はステンレス鋼
板、側板１２はステンレス鋼板、そして刃先１３は、特
殊鋳鋼でできている。鉄鉱石等は、図６のＳ側開口から
掬い入れられ、Ｄ側開口から排出されるようになってい
る。5 and 6 show the structure of the bucket 3 '. Reference numeral 11 is a bottom plate of the bucket 3 ', which is formed by a curved surface. Side plates 1 are provided on both sides of the bottom plate 11.
2 is provided perpendicular to the bottom plate 11. Bottom plate 11
And a cutting edge 1 formed in a substantially U shape on the scooping surface side of the side plate 12.
3 is provided. 14 is a liner for the cutting edge. The bottom plate 11 that is the body of the bucket is made of a stainless steel plate, the side plate 12 is made of a stainless steel plate, and the cutting edge 13 is made of special cast steel. Iron ore and the like are scooped in from the S side opening in FIG. 6 and discharged from the D side opening.
【０００４】このような払出し装置において、特に、鉄
鉱石（塊、粉混合、または粉がある。その付着水分は約
２〜３％である。）のような粘着性のあるばら物を扱う
と、粉状の鉄鉱石がバケットの底板に付着し、次第に付
着量が増加しバケットの容量が減少するため払出し能力
が低下する。また、付着物によりブームの先端荷重が増
大し、機器に過大な荷重をかけ、装置故障の原因ともな
る。この現象は、雨天時にばら物が雨水を含むようにな
ると一層激しくなる。従来、これを防ぐため、バケット
の付着量が一定量に達した時点で、人手によりバケット
の付着物を除去しなければならなかった。この除去作業
は、多くの工数がかかるため、バケットの付着物の減少
対策が種々考えられ、提案されている。これらの中に、
バケットの底板に開口を設け、この開口のバケット進行
方向に複数本のチェーンを弛めて配設したもの（実開昭
６１−８９０５５号公報）およびバケットの内面に超高
分子材料（超高分子ポリエチレン）をライニング材とし
て取付けたもの（実開昭５８−１８５６４４号公報）が
ある。In such a dispenser, particularly when handling sticky bulks such as iron ore (there are lumps, powder mixes, or powders, the water content of which is about 2-3%). The powdery iron ore adheres to the bottom plate of the bucket, and the amount of adhesion gradually increases and the capacity of the bucket decreases, so that the payout capacity decreases. Further, the load on the tip of the boom increases due to the adhered matter, and an excessive load is applied to the equipment, which causes a device failure. This phenomenon is exacerbated when the loose material contains rainwater in rainy weather. Conventionally, in order to prevent this, it is necessary to manually remove the deposits on the bucket when the deposit amount on the bucket reaches a certain amount. Since this removal work requires a lot of man-hours, various measures for reducing the deposits on the bucket have been proposed and proposed. Among these,
An opening is provided in the bottom plate of the bucket, and a plurality of chains are loosely arranged in the bucket advancing direction of the opening (Japanese Utility Model Laid-Open No. 61-89055), and an ultrahigh polymer material (ultrapolymer) is provided on the inner surface of the bucket. There is one in which polyethylene) is attached as a lining material (Japanese Utility Model Laid-Open No. 185644/1983).
【０００５】[0005]
【発明が解決しようとする課題】発明者らは、前記実開
昭６１−８９０５５号公報および実開昭５８−１８５６
４４号公報に記載される装置を、焼結原料であるブレン
ディング粉について払出し装置のバケットで実機試験し
た。実開昭６１−８９０５５号公報に記載される装置
は、付着量の減少に多少の効果が認められるものの、チ
ェーン列の隙間より粉鉄鉱石が多量に落下し、払出し能
力が大幅に低下することが分かった。また、実開昭５８
−１８５６４４号公報に記載される装置は、運転当初、
従来の鋼板製バケットに比べて鉄鉱石粉の付着は少なか
ったが、ライニング材である超高分子ポリエチレン板の
摩耗が早く、摩耗するとその摩耗跡に鉄鉱石粉が付着す
るようになり、その後付着量が増加し払出し能力が低下
することが分かった。DISCLOSURE OF THE INVENTION The inventors of the present invention have disclosed the above-mentioned Japanese Utility Model Publication No. 61-89055 and Japanese Utility Model Publication 58-1856.
The apparatus described in Japanese Patent Publication No. 44-44 was subjected to an actual machine test on a blending powder, which is a sintering raw material, in a bucket of a delivery apparatus. The device described in Japanese Utility Model Laid-Open No. 61-89055 has some effect in reducing the amount of adhesion, but a large amount of fine iron ore drops from the gaps in the chain row, and the payout capacity is significantly reduced. I understood. In addition, 58
The device described in Japanese Patent Laid-Open No.
The iron ore powder adhered less compared to conventional steel plate buckets, but the ultra high molecular weight polyethylene plate that is the lining material wears quickly, and when it wears, the iron ore powder adheres to the wear marks, and the amount of adhesion thereafter. It was found that the payout capacity increased and the payout capacity decreased.
【０００６】本発明は、上記のような問題を解消でき、
バケット内面に付着物が付かないまたは極めて付着物の
少ない掘削バケットを提供することを目的とする。The present invention can solve the above problems.
An object of the present invention is to provide an excavation bucket in which the inner surface of the bucket is free of deposits or has very little deposits.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記目的を複
数のバケットを回転させて鉄鉱石、石炭等のばら物を掘
削しコンベヤに排出する掘削バケットにおいて、バケッ
トの底板内面に可撓性且つ弾性を有する板状材を、その
一端を固定し他端を自由端として取り付けけることによ
って達成する。DISCLOSURE OF THE INVENTION The present invention has the above-mentioned object of being an excavating bucket for rotating a plurality of buckets to excavate loose substances such as iron ore and coal and discharging them to a conveyor. The elastic plate-like material is attached by fixing one end and attaching the other end as a free end.
【０００８】上記発明において、バケット底板を前記板
状材の一端を固定する固定板と板状材の自由端を支持す
る終端支持板により構成し、他を開口とした方がより好
ましい。In the above invention, it is more preferable that the bucket bottom plate is composed of a fixed plate for fixing one end of the plate-shaped member and a terminal support plate for supporting the free end of the plate-shaped member, and the other is an opening.
【０００９】[0009]
【作用】バケットの底板内面または、底板を張る面の内
側に、可撓性且つ弾性のある板状材の一端を固定し他端
を自由端として取付けてあるから、バケットで鉄鉱石等
のばら物を掬い取るとき、ばら物の流れにより前記板状
材がバケットの底面に沿って延び底面を形成し、バケッ
ト内のばら物を支持する。その後バケットが回転して上
方の排出位置に達すると、ばら物が排出されるととも
に、底面を形成していた板状材は垂れ下がるように下方
に湾曲し、その湾曲状態を変化させるとともに、自由端
側が上下動しながら掬い位置まで回転する。この間、板
状材の表面は伸縮を繰り返すので、板状材の表面の付着
物は剥離して落ちる。従って、板状材の表面に付着物が
付かない。The bucket has an inner surface of the bottom plate or an inner surface of the bottom plate, and one end of a flexible and elastic plate member is fixed and the other end is attached as a free end. When scooping an object, the plate-like material extends along the bottom surface of the bucket to form a bottom surface by the flow of the bulk material, and supports the bulk material in the bucket. After that, when the bucket rotates to reach the upper discharge position, the loose material is discharged, and the plate-shaped material forming the bottom surface bends downward so as to hang down, changing the curved state and free end. The side moves up and down and rotates to the scooping position. During this time, the surface of the plate-shaped material repeatedly expands and contracts, so that the adhered substances on the surface of the plate-shaped material peel off and fall off. Therefore, no adhered matter is attached to the surface of the plate member.
【００１０】バケット底板を前記板状材の一端を固定す
る固定板と板状材の自由端を支持する終端支持板により
構成し、他を開口とすれば、板状材と底板の間に粉鉄鉱
石等のばら物が、仮に入っても、開口より落下し、溜ま
ることがないので好都合である。The bucket bottom plate is composed of a fixed plate for fixing one end of the plate-shaped material and a terminal support plate for supporting the free end of the plate-shaped material, and if the other is an opening, a powder is provided between the plate-shaped material and the bottom plate. It is convenient because loose particles such as iron ore do not fall even if they enter, and do not collect.
【００１１】[0011]
【実施例】本発明の実施例を図面に基づいて以下に説明
する。図１は、本発明のバケットの一実施例の正面図、
図２（Ａ）は、図１のＡ−Ａ断面図である。本発明のバ
ケット３において、側板１２、刃先１３および刃先のラ
イナー１４は従来のバケットの場合と同一である。１５
は、可撓性且つ弾性を有する板状材で、例えば、合成ゴ
ム板、ウレタンゴム板、コンベヤベルト板（廃材）等が
使用される。刃先１３と底板１１の接続部分に開口１１
ａを設けてある。そして、板状材１５の一端を刃先１４
の外側に複数の皿ボルトにより固定し、板状材１５の他
端を前記開口１１ａを通して底板１１の内面に延設して
ある。板状材１５の他端は、自由端であり、固定してな
い。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an embodiment of the bucket of the present invention,
FIG. 2A is a cross-sectional view taken along the line AA of FIG. In the bucket 3 of the present invention, the side plate 12, the cutting edge 13, and the liner 14 of the cutting edge are the same as those in the conventional bucket. 15
Is a plate material having flexibility and elasticity, and for example, a synthetic rubber plate, a urethane rubber plate, a conveyor belt plate (waste material), or the like is used. The opening 11 is formed in the connecting portion between the cutting edge 13 and the bottom plate 11.
a is provided. Then, one end of the plate member 15 is attached to the cutting edge 14
Is fixed to the outer side of the bottom plate 11 by a plurality of countersunk bolts, and the other end of the plate member 15 is extended to the inner surface of the bottom plate 11 through the opening 11a. The other end of the plate member 15 is a free end and is not fixed.
【００１２】図２（Ｂ）は、底板に開口を設けた他の実
施例の断面図である。この例では、底板１１を板状材１
５の一端を固定する固定板１１ｂと板状材の自由端を支
持する終端支持板１１ｃにより構成し、他を開口１１ａ
としている。そして、板状材１５は、次のように取り付
けられる。底板１１の幅寸法に略合わせて切った幅の板
状材１５をその長さ方向において２枚に分け、その中の
１枚を、長さ方向の一端を刃先１３の裏面に皿ボルト１
６で固定し、他の１枚の一端を固定板１１ｂの内面に皿
ボルト１６で固定する。刃先１３に取り付けた板状材１
５の自由端を固定板１１ｂに取り付けた板状材１５の上
に重ねて載せ、固定板１１ｂに取り付けた板状材１５の
自由端を終端支持板１１ｃの内面に載せる。FIG. 2B is a sectional view of another embodiment in which an opening is provided in the bottom plate. In this example, the bottom plate 11 is replaced by the plate-shaped member 1
5 is composed of a fixed plate 11b for fixing one end and a terminal support plate 11c for supporting the free end of the plate-shaped member, and the other is provided with an opening 11a.
And Then, the plate member 15 is attached as follows. A plate-shaped member 15 having a width cut substantially in accordance with the width dimension of the bottom plate 11 is divided into two pieces in the length direction, and one of the pieces is placed on the back surface of the blade edge 13 at one end in the length direction.
6 and the other one end is fixed to the inner surface of the fixing plate 11b with the flat head bolt 16. Plate-shaped material 1 attached to the cutting edge 13
The free end of No. 5 is placed on the plate-shaped member 15 attached to the fixed plate 11b in an overlapping manner, and the free end of the plate-shaped member 15 attached to the fixed plate 11b is placed on the inner surface of the terminal support plate 11c.
【００１３】この実施例の作用を、図３および図４によ
り説明する。図４にはバケットの回転位置（イ〜ニ）を
示してあり、図３は各位置における板状材等の状態変化
を示している。ばら物を掬う直前の位置イでは、板状材
１５はその重さによりその自由端が、それぞれ、中央固
定板１１ｂ，終端支持板１１ｃに乗るか、または接近し
た状態になる（図３（Ａ））。回転してロの位置になる
と、バケットがばら物１７を掬い取った状態になる。こ
のとき、板状材１５の自由端はばら物の重さにより中央
固定板１１ｂ，終端支持板１１ｃにしっかりと固定され
た状態となっている（図３（Ｂ））。さらに回転してハ
の位置になると、バケット内のばら物１７が排出され、
板状材１５は自由端が垂れ下がり、湾曲し始め、板状材
１５に付着した付着物１８が剥離、落下し始める（図３
（Ｃ））。さらに回転してニの位置になると、板状材１
５は湾曲が最大となり（図３（Ｄ））、さらに回転して
イの位置に近づくにつれて板状材の弾性により湾曲が緩
み図３（Ａ）の状態に戻る。このように、ばら物１７を
排出した後、バケットがハの位置からイの位置に回転す
る間に、板状材１５は下方に湾曲してゆく状態から湾曲
が緩んでゆく状態へと変化する。また、この間、板状材
の弾性とバケットの振動により板状材１５はその固定端
を支点として緩やかに上下動する。このような状態変化
により、板状材の表面は伸縮を繰り返すので、板状材の
表面の付着物は剥離して落ちる。The operation of this embodiment will be described with reference to FIGS. FIG. 4 shows the rotation positions (a to d) of the bucket, and FIG. 3 shows the state changes of the plate-shaped material and the like at each position. At the position a immediately before scooping loose objects, the free ends of the plate member 15 are placed on or approaching the central fixing plate 11b and the end supporting plate 11c, respectively, depending on the weight thereof (see FIG. )). When rotated to the position B, the bucket is in a state of scooping up the loose material 17. At this time, the free end of the plate-shaped member 15 is firmly fixed to the central fixing plate 11b and the end support plate 11c by the weight of the bulk (FIG. 3 (B)). When further rotated to the position of c, the loose material 17 in the bucket is discharged,
The free end of the plate member 15 hangs down and begins to bend, and the deposit 18 attached to the plate member 15 begins to peel off and fall (see FIG. 3).
(C)). When it is further rotated to the second position, the plate-shaped material 1
5 has the maximum curvature (FIG. 3 (D)), and as it further rotates and approaches the position of (a), the elasticity of the plate member relaxes the curvature and returns to the state of FIG. 3 (A). In this way, after the bulk material 17 is discharged, the plate-shaped material 15 changes from a state of curving downward to a state of curving downward while the bucket rotates from the position of c to the position of a. . Further, during this time, the elasticity of the plate-shaped material and the vibration of the bucket cause the plate-shaped material 15 to move gently up and down with the fixed end as a fulcrum. Due to such a state change, the surface of the plate-shaped material repeatedly expands and contracts, so that the deposits on the surface of the plate-shaped material peel off and fall off.
【００１４】バケット底板を張る面内に前記板状材の一
端を固定する固定板と板状材の自由端を支持する終端支
持板を設け、他を開口とすれば、板状材と底板の間に粉
鉄鉱石等のばら物が、仮に入っても、開口より落下し、
溜まることがない。If a fixed plate for fixing one end of the plate-shaped material and a terminal support plate for supporting the free end of the plate-shaped material are provided in the plane where the bucket bottom plate is stretched, and the other is made an opening, the plate-shaped material and the bottom plate are separated. In the meantime, loose particles such as powdered iron ore will fall from the opening even if they enter,
It doesn't collect.
【００１５】なお、刃先１３と終端支持板１１ｃの間に
固定板を２箇所設け、板状材１５を３枚に分けて、その
中の一枚の一端を刃先１３の裏面に、他の２枚のそれぞ
れの一端を２箇所の固定板のそれぞれに固定し、それぞ
れの他端を自由端として取り付けてもよい。この場合
は、開口が３個できる。Two fixing plates are provided between the cutting edge 13 and the end support plate 11c, and the plate member 15 is divided into three pieces, one end of which is on the back surface of the cutting edge 13 and the other two. One end of each of the sheets may be fixed to each of the two fixing plates, and the other ends may be attached as free ends. In this case, there are three openings.
【００１６】[0016]
【発明の効果】本発明の掘削バケットは以上のように構
成されているから、バケット内面にばら物が付着するこ
と無く、安定した払出し能力を維持することができる。
また、付着物の除去作業が皆無となる。Since the excavation bucket of the present invention is constructed as described above, it is possible to maintain a stable dispensing capability without depositing loose particles on the inner surface of the bucket.
Further, the work of removing the adhered matter is eliminated.
【図１】本発明の掘削バケットの一実施例の正面図であ
る。FIG. 1 is a front view of an embodiment of an excavation bucket of the present invention.
【図２】（Ａ）は、図１のＡ−Ａ断面図である。（Ｂ）
は、底板に開口を設けた例の図１のＡ−Ａ断面図であ
る。2A is a sectional view taken along line AA of FIG. (B)
FIG. 2 is a sectional view taken along line AA of FIG. 1 showing an example in which an opening is provided in a bottom plate.
【図３】（Ａ）〜（Ｄ）本発明に係る板状材の作用説明
図である。FIG. 3 (A) to (D) are explanatory views of the action of the plate-shaped material according to the present invention.
【図４】ばら物払出し装置のバケットホイール部の側面
図である。FIG. 4 is a side view of a bucket wheel portion of the bulk material dispensing device.
【図５】従来の掘削バケットの正面図である。FIG. 5 is a front view of a conventional excavation bucket.
【図６】従来の掘削バケットのＢ−Ｂ断面図である。FIG. 6 is a BB cross-sectional view of a conventional excavation bucket.
３ バケット １１ 底板 １１ａ 開口 １１ｂ 固定板 １１ｃ 終端支持板 １２ 側板 １３ 刃先 １５ 板状材 １６ 皿ボルト １７ ばら物 １８ 付着物（剥離） 3 Bucket 11 Bottom plate 11a Opening 11b Fixed plate 11c End support plate 12 Side plate 13 Blade edge 15 Plate-shaped material 16 Flat bolt 17 Loose piece 18 Adhered matter (peeling)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂本 二郎 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 八杉 好治 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jiro Sakamoto 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd. (72) Yoshiharu Yasugi 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nippon Steel Tube Co., Ltd.
Claims (2)
炭等のばら物を掘削しコンベヤに排出する掘削バケット
において、バケットの底板内面に可撓性且つ弾性を有す
る板状材を、その一端を固定し他端を自由端として取り
付けたことを特徴とする掘削バケット。1. In an excavation bucket that rotates a plurality of buckets to excavate loose substances such as iron ore and coal and discharge them to a conveyor, a flexible and elastic plate-shaped material is provided at one end of the bottom plate inner surface of the bucket. An excavation bucket, characterized in that it is fixed and the other end is attached as a free end.
する固定板と板状材の自由端を支持する終端支持板から
構成され、他を開口とした請求項１記載の掘削バケッ
ト。2. The excavation bucket according to claim 1, wherein the bucket bottom plate is composed of a fixed plate for fixing one end of the plate-shaped member and a terminal support plate for supporting a free end of the plate-shaped member, and the other is an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4990495A JP2943648B2 (en) | 1995-03-09 | 1995-03-09 | Drilling bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4990495A JP2943648B2 (en) | 1995-03-09 | 1995-03-09 | Drilling bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08246487A true JPH08246487A (en) | 1996-09-24 |
| JP2943648B2 JP2943648B2 (en) | 1999-08-30 |
Family
ID=12844008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4990495A Expired - Lifetime JP2943648B2 (en) | 1995-03-09 | 1995-03-09 | Drilling bucket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2943648B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322206A (en) * | 2005-05-18 | 2006-11-30 | Shin Caterpillar Mitsubishi Ltd | Excavation bucket |
| JP2007247321A (en) * | 2006-03-17 | 2007-09-27 | Jfe Steel Kk | Bucket |
| WO2012113542A1 (en) * | 2011-02-25 | 2012-08-30 | ThyssenKrupp Fördertechnik GmbH | Bucket-like digging tool for excavators or reclaiming appliances |
| CN104831772A (en) * | 2015-05-12 | 2015-08-12 | 柳州金盾机械有限公司 | Preparing method of loader bucket plate |
-
1995
- 1995-03-09 JP JP4990495A patent/JP2943648B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322206A (en) * | 2005-05-18 | 2006-11-30 | Shin Caterpillar Mitsubishi Ltd | Excavation bucket |
| JP2007247321A (en) * | 2006-03-17 | 2007-09-27 | Jfe Steel Kk | Bucket |
| WO2012113542A1 (en) * | 2011-02-25 | 2012-08-30 | ThyssenKrupp Fördertechnik GmbH | Bucket-like digging tool for excavators or reclaiming appliances |
| CN104831772A (en) * | 2015-05-12 | 2015-08-12 | 柳州金盾机械有限公司 | Preparing method of loader bucket plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2943648B2 (en) | 1999-08-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990525 |