JPH0793914B2 - Vacuum cleaner suction body - Google Patents
Vacuum cleaner suction bodyInfo
- Publication number
- JPH0793914B2 JPH0793914B2 JP61304377A JP30437786A JPH0793914B2 JP H0793914 B2 JPH0793914 B2 JP H0793914B2 JP 61304377 A JP61304377 A JP 61304377A JP 30437786 A JP30437786 A JP 30437786A JP H0793914 B2 JPH0793914 B2 JP H0793914B2
- Authority
- JP
- Japan
- Prior art keywords
- suction port
- brush
- electric motor
- port body
- vacuum cleaner
- 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 - Fee Related
Links
Landscapes
- Nozzles For Electric Vacuum Cleaners (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、回転ブラシを備えた電気掃除機の吸込口体に
関する。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to a suction port body of an electric vacuum cleaner having a rotating brush.
（従来の技術） 従来、この種の電気掃除機の吸込口体としては、たとえ
ば第５図に示す構成が知られている。この第５図に示す
電気掃除機の吸込口体は、下面前側に吸込口を有する吸
込口本体１の後部中央に、吸込口と連通し掃除機本体に
ホースおよび延長管などを介して接続される接続管２を
設け、吸込口本体１内の前部にその吸込口に臨んで、じ
ゅうたんなどから塵埃を掻き出す回転ブラシ３を回転自
在に支持し、吸込口本体１内の後部一側に、回転ブラシ
３を回転駆動する電動機４を配設するとともに、この電
動機４の回転軸に固定されたプーリ５と回転ブラシ３の
端部に固定されたプーリ６とに回転伝達用のベルト７を
掛け渡した構造が採られている。(Prior Art) Conventionally, for example, a configuration shown in FIG. 5 is known as a suction inlet of this type of vacuum cleaner. The suction port body of the electric vacuum cleaner shown in FIG. 5 is connected to the vacuum cleaner body through a hose and an extension pipe in the center of the rear part of the suction port body 1 having the suction port on the front side of the lower surface. A connecting pipe 2 is provided, and a rotary brush 3 for scraping dust from a carpet or the like is rotatably supported by facing the suction port in the front part of the suction port body 1, and on the rear one side of the suction port body 1. An electric motor 4 for rotatably driving the rotating brush 3 is provided, and a belt 7 for transmitting rotation is hung on a pulley 5 fixed to a rotating shaft of the electric motor 4 and a pulley 6 fixed to an end of the rotating brush 3. The passed structure is adopted.
しかしながら、この第５図に示す従来の構造では、回転
ブラシ３と電動機４とを吸込口本体１内に並べて配設し
ているため、吸込口本体１が大型にならざるを得ない。However, in the conventional structure shown in FIG. 5, since the rotary brush 3 and the electric motor 4 are arranged side by side in the suction port body 1, the suction port body 1 must be large.
また、電動機４は、吸込口と接続管２との間の風路を避
けて配設しなければならないから、必然的に吸込口本体
１内の一側に偏位して位置させることになるが、そのた
め、全体の重心位置が中央から外れ、吸込口体を持ち上
げたとき傾くなどの不都合が生ずる。そこで、吸込口本
体１の他側に電動機４と重量が鉤り合う何らかの部品を
設けたとすると、全体の重量が不必要に増してしまう。Further, the electric motor 4 has to be arranged so as to avoid the air passage between the suction port and the connecting pipe 2, so that it is inevitably located on one side in the suction port body 1 in a deviated position. However, as a result, the position of the center of gravity of the entire body deviates from the center, and inconveniences such as tilting when the suction port body is lifted occur. Therefore, if some component whose weight is incompatible with the electric motor 4 is provided on the other side of the suction port main body 1, the weight of the whole is unnecessarily increased.
さらに、ベルト７を用いているため、くつ下などが回転
ブラシ３にからんでその回転が妨げられたとき、電動機
４のみならずベルト７に無理な負荷が加わり、このベル
ト７に破損が生じやすく、ベルト７の交換が必要となる
こともある。Further, since the belt 7 is used, when socks or the like are entangled in the rotating brush 3 and its rotation is hindered, an unreasonable load is applied to the belt 7 as well as the electric motor 4, and the belt 7 is easily damaged. The belt 7 may need to be replaced.
またさらに、電動機４の冷却についても、吸込口本体１
に複雑な風路を形成する必要がある。また、冷却用の風
路を設けても、上述のような無理な負荷が加わった場
合、電動機４の温度が過度に上昇するおそれがあるた
め、電動機４を必然的に大型のものとせざるを得ず、吸
込口本体１を小型にしようとすると、この吸込口本体１
への電動機４の組込みが困難になる。Furthermore, for cooling the electric motor 4, the suction port body 1
It is necessary to form a complicated air passage. Further, even if the cooling air passage is provided, the temperature of the electric motor 4 may rise excessively when an unreasonable load is applied as described above. Therefore, the electric motor 4 is necessarily large in size. If you try to make the suction port body 1 small without getting it, this suction port body 1
It becomes difficult to incorporate the electric motor 4 into the motor.
一方、上述の構成のまま電動機を小型化すると、床面の
抵抗により回転ブラシの回転を低下させ、あるいは、停
止させてしまうおそれがあり、十分に塵埃を掻き上げる
ことができなくなるおそれがある。On the other hand, if the electric motor is downsized with the above configuration, the rotation of the rotary brush may be reduced or stopped due to the resistance of the floor surface, and the dust may not be sufficiently scraped.
（発明が解決しようとする問題点） 上述のように、従来の電気掃除機の吸込口体は、吸込口
本体内に回転ブラシとこの回転ブラシを駆動する電動機
とをたとえば前後に並べて設けていたため、大型にな
り、単に小型化を図り電動機を小型化すると、電動機の
出力が小さくなり塵埃の掻き上げ能力が低下するおそれ
がある問題を有している。(Problems to be Solved by the Invention) As described above, in the suction port body of the conventional vacuum cleaner, the rotating brush and the electric motor for driving the rotating brush are provided side by side in the suction port body, for example. However, if the electric motor becomes large and simply downsized and the electric motor becomes small, the output of the electric motor becomes small and the dust scooping ability may decrease.
本発明は、上記問題点に鑑みなされたもので、塵埃を掻
き上げる能力を低下させずに小型化を図った電気掃除機
の吸込口体を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a suction port body of an electric vacuum cleaner that is downsized without reducing the ability to scrape dust.
（問題点を解決するための手段） 本発明の電気掃除機の吸込口体は、吸込口を下面に有す
るとともにこの吸込口に連通する接続管を有する吸込口
本体と、この吸込口本体内に前記吸込口に臨んで回転自
在に設けられた筒状のブラシ台の表面にブラシ部材を配
設した回転ブラシと、前記ブラシ台の内部に弾性体から
なる支持体を介してこのブラシ台に固定されたケース
部、および、このケース部に対して回転自在で前記吸込
口本体に固定された回転軸を有する電動機とを備え、こ
の電動機を駆動すると前記ケース部が回転して前記回転
ブラシを回転駆動させるものである。(Means for Solving the Problems) A suction port body of an electric vacuum cleaner according to the present invention has a suction port body having a suction port on a lower surface and a connecting pipe communicating with the suction port, and a suction port body in the suction port body. A rotating brush in which a brush member is arranged on the surface of a cylindrical brush base that is rotatably provided facing the suction port, and is fixed to the brush base via a support made of an elastic body inside the brush base. And a motor having a rotating shaft that is rotatable with respect to the case and fixed to the suction port body. When the motor is driven, the case rotates to rotate the rotating brush. It is driven.
（作用） 本発明の電気掃除機の吸込口体では、回転軸を吸込口本
体に固定してケース部をブラシ台の内部に弾性体からな
る支持体にて固定して電動機を配設し、ケース部を回転
させて回転ブラシを回転させるため、吸込口本体の小型
化を可能にするとともに、慣性力の大きなケース部が回
転軸に対して回転されるため、被掃除面からの抵抗があ
っても、回転ブラシの回転が低下しにくいので、塵埃を
掻き上げる能力を低下させず、被掃除面から衝撃が加わ
っても、電動機のケース部が弾性体からなる支持体にて
固定されていることにより電動機に衝撃が加わることが
なく、回転の伝達にも悪影響を与えない。(Operation) In the suction port body of the electric vacuum cleaner of the present invention, the rotating shaft is fixed to the suction port body, the case portion is fixed inside the brush base by the support made of an elastic body, and the electric motor is arranged. Since the case part is rotated to rotate the rotating brush, the suction port body can be downsized, and the case part, which has a large inertial force, is rotated with respect to the rotating shaft, so that there is resistance from the surface to be cleaned. However, since the rotation of the rotating brush is less likely to decrease, the ability to scrape dust is not reduced, and the case of the electric motor is fixed by a support made of an elastic body even if an impact is applied from the surface to be cleaned. As a result, no impact is applied to the electric motor, and the transmission of rotation is not adversely affected.
（実施例） 以下、本発明の電気掃除機の吸込口体の一実施例を第１
図および第２図を参照して説明する。(Example) Hereinafter, a first example of the suction port body of the electric vacuum cleaner of the present invention will be described.
A description will be given with reference to the drawings and FIG.
図において、11は吸込口本体で、この吸込口本体11は、
下部ケース12とこの下部ケース12の上側に結合された上
部ケース13とから構成されている。そして、下部ケース
12の前側にはその下面に開口した凹部14が形成されてお
り、この凹部14の下面の開口が吸込口15となっている。
また、吸込口本体11の後部中央の上側には、基管16を介
して接続管17が設けられており、この接続管17の内部は
凹部14に連通されている。なお、基管16は、下部ケース
12および上部ケース13と一体的に設けてもよいが、別体
にして吸込口本体11に対して回動自在としてもよい。さ
らに、下部ケース12の下部両側には、走行用のローラ18
が設けられている。In the figure, 11 is a suction port body, and this suction port body 11 is
It is composed of a lower case 12 and an upper case 13 connected to the upper side of the lower case 12. And the lower case
A recess 14 is formed on the front side of the recess 12 on the lower surface thereof, and the opening on the lower surface of the recess 14 serves as a suction port 15.
Further, a connection pipe 17 is provided above the center of the rear part of the suction port body 11 via a base pipe 16, and the inside of the connection pipe 17 is communicated with the recess 14. The base pipe 16 is the lower case.
Although it may be provided integrally with 12 and the upper case 13, it may be provided separately and rotatable with respect to the suction port body 11. In addition, on both sides of the lower part of the lower case 12, there are rollers 18 for running.
Is provided.
また、吸込口本体11の凹部14内には回転自在に回転ブラ
シ21が支持されており、この回転ブラシ21は円筒形状の
ブラシ台22の外周面にブラシ部材としての複数のブラシ
毛23を植設したものであり、ブラシ台22の両端部にはよ
り径小な円筒形状の筒状部24が同軸的に形成されてい
る。A rotary brush 21 is rotatably supported in the recess 14 of the suction port main body 11, and the rotary brush 21 has a plurality of brush bristles 23 as brush members planted on the outer peripheral surface of a cylindrical brush base 22. The cylindrical base portion 24 having a smaller diameter is coaxially formed at both ends of the brush base 22.
そして、ブラシ台22内には、電動機25のケース部26が弾
性体であるゴム製の支持体27を介して固定されており、
この電動機25のケース部26の両端から突出した一対の回
転軸28は、ブラシ台22の中心軸上に位置して筒状部24内
まで延びている。なお、これら筒状部24内において、回
転軸28はベアリング29により回転自在に支持されてい
る。そして、これらベアリング29より突出した一対の回
転軸28の先端部は、吸込口本体11の凹部14の側面に固定
されブラシ台22の両筒状部24内位置した固定部材30にそ
れぞれ固定されている。Then, in the brush base 22, the case portion 26 of the electric motor 25 is fixed via a rubber support 27 which is an elastic body,
A pair of rotating shafts 28 protruding from both ends of the case portion 26 of the electric motor 25 are located on the central axis of the brush base 22 and extend into the tubular portion 24. The rotary shaft 28 is rotatably supported by bearings 29 in the tubular portions 24. The tip ends of the pair of rotary shafts 28 projecting from the bearings 29 are fixed to the side surfaces of the recessed portion 14 of the suction port body 11 and fixed to the fixing members 30 located inside the cylindrical portions 24 of the brush base 22, respectively. There is.
また、これら固定部材30の外周面に固定接点31がそれぞ
れ固定されており、一方、両筒状部24の内周面には、固
定接点31に摺動自在に接触された円筒形状の回転接点32
が固定されている。そして、一対の固定接点31は吸込口
本体11より外方へ延びる電源コード33にそれぞれリード
線34を介して接続されており、一方、一対の回転接点32
は電動機25の両極にそれぞれブラシ台23内に位置するリ
ード線35を介して接続されている。Further, fixed contacts 31 are fixed to the outer peripheral surfaces of these fixed members 30, respectively, while cylindrical rotating contacts slidably contacted with the fixed contacts 31 are provided on the inner peripheral surfaces of both tubular portions 24. 32
Is fixed. The pair of fixed contacts 31 are connected to the power cord 33 extending outward from the suction port body 11 via the lead wires 34, respectively, while the pair of rotary contacts 32 are provided.
Are connected to both poles of the electric motor 25 via lead wires 35 located in the brush base 23, respectively.
つぎに、上記実施例の作用について説明する。Next, the operation of the above embodiment will be described.
掃除時には、図示しない掃除機本体の集塵室にホースお
よび延長管を介して接続管17を着脱自在に連通接続して
おく。At the time of cleaning, a connecting pipe 17 is detachably connected to a dust collecting chamber of a cleaner body (not shown) through a hose and an extension pipe.
そして、電源コード33、リード線34、固定接点31、回転
接点32およびリード線35を介して電動機25に給電され、
その回転軸28が回転する。ところが、その回転軸28は吸
込口本体11に固定されているので、電動機25のケース部
26およびこのケース部26が固定された回転ブラシ21のブ
ラシ台22が吸込口本体11に対して回転する。そして、こ
の回転する回転ブラシ21がじゅうたんなどから塵埃を掻
き出す。ついで、掻き出された塵埃は、掃除機本体内の
電動送風機の駆動により、吸込口15から吸込まれ、接続
管17、延長管およびホースを介して掃除機本体の集塵室
に導かれる。Then, power is supplied to the electric motor 25 through the power cord 33, the lead wire 34, the fixed contact 31, the rotating contact 32, and the lead wire 35,
The rotating shaft 28 rotates. However, since the rotating shaft 28 is fixed to the suction port main body 11, the case portion of the electric motor 25 is
26 and the brush base 22 of the rotating brush 21 to which the case portion 26 is fixed rotate with respect to the suction port body 11. Then, the rotating rotary brush 21 scrapes dust from the carpet or the like. Then, the dust thus scraped out is sucked from the suction port 15 by the drive of the electric blower in the cleaner body, and is guided to the dust collecting chamber of the cleaner body through the connection pipe 17, the extension pipe and the hose.
上記構成によれば、回転ブラシ21を駆動する電動機25を
回転ブラシ21のブラシ台22内に配設したので、これら回
転ブラシ21および電動機25を内蔵した吸込口本体11を小
型軽量化できる。したがって、吸込口本体11をじゅうた
んや床面上で走行させる際の走行性も向上する。According to the above configuration, the electric motor 25 that drives the rotating brush 21 is arranged in the brush base 22 of the rotating brush 21, so that the suction port body 11 incorporating the rotating brush 21 and the electric motor 25 can be made smaller and lighter. Therefore, the runnability when the suction port body 11 is run on a carpet or a floor surface is also improved.
また、電動機25から回転ブラシ21への回転の伝達におい
て損傷しやすいベルトを用いていないので、ベルトの損
傷による交換の必要がなくなり、メインテナンスが容易
になるとともに、耐久性が向上する。In addition, since a belt that is easily damaged in transmission of rotation from the electric motor 25 to the rotating brush 21 is not used, it is not necessary to replace the belt due to damage to the belt, maintenance is facilitated, and durability is improved.
つぎに、本発明の他の実施例を第３図を参照して説明す
る。Next, another embodiment of the present invention will be described with reference to FIG.
この実施例では、電動機25が回転ブラシ21のブラシ台22
の中央でかつ吸込口本体11の中央に位置されている。In this embodiment, the electric motor 25 is the brush base 22 of the rotating brush 21.
Is located at the center of the suction port body 11.
この構造によれば、吸込口体の全体の重心が吸込口本体
11の中央に位置するので、重量的な安定性が向上し、た
とえば延長管やホースを持って吸込口本体11を持ち上げ
たとき、この吸込口本体11が傾いてしまうことはない。According to this structure, the center of gravity of the entire suction inlet body is
Since it is located in the center of 11, the weight stability is improved, and, for example, when the suction port body 11 is lifted with an extension tube or a hose, the suction port body 11 does not tilt.
さらに、本発明の他の実施例を第４図を参照して説明す
る。Further, another embodiment of the present invention will be described with reference to FIG.
この実施例では、回転ブラシ21のブラシ台22の内周面に
ファンブレード41が固定されている。また、ブラシ台22
には、吸気口42が図示右側の端面に開口形成されている
とともに、排気口43が図示左側の端面に開口形成されて
いる。In this embodiment, the fan blade 41 is fixed to the inner peripheral surface of the brush base 22 of the rotary brush 21. Also, the brush stand 22
An intake port 42 is formed on the right end surface in the figure, and an exhaust port 43 is formed on the left end surface in the figure.
そうして、掃除中に回転ブラシ21が回転すると、ファン
ブレード41の回転により、矢指で示すように、吸気口42
よりブラシ台22内に冷却風が流入し、このブラシ台22内
の駆動中の電動機25の周囲を通って、この電動機25を冷
却し、排気口43よりブラシ台22外に流出する。Then, when the rotary brush 21 rotates during cleaning, the fan blades 41 rotate, so that the intake port 42
The cooling air further flows into the brush base 22, passes around the driving electric motor 25 in the brush base 22, cools the electric motor 25, and flows out of the brush base 22 through the exhaust port 43.
この実施例の構成によれば、回転ブラシ21の回転を利用
することにより、電動機25の高い冷却効果が得られる。
したがって、より小型の電動機25を用いることも可能と
なる。According to the configuration of this embodiment, by utilizing the rotation of the rotary brush 21, a high cooling effect of the electric motor 25 can be obtained.
Therefore, it is possible to use a smaller electric motor 25.
なお、吸気口42よりの空気の流入および排気口43よりの
空気の流出が十分に行なわれるよう、吸込口本体11の側
面の前記吸気口42および排気口43が対向する位置に連通
口44を開口形成してもよい。It should be noted that the communication port 44 is provided on the side surface of the suction port body 11 at a position where the suction port 42 and the exhaust port 43 face each other so that the inflow of air from the suction port 42 and the outflow of air from the exhaust port 43 are sufficiently performed. You may form an opening.
本発明の電気掃除機の吸込口体によれば、回転軸を吸込
口本体に固定してケース部をブラシ台の内部に弾性体か
らなる支持体にて固定して電動機を配設し、ケース部を
回転させて回転ブラシを回転させるため、吸込口本体の
小型化できるとともに、慣性力の大きなケース部が回転
軸に対して回転されるため、被掃除面からの抵抗があっ
ても、回転ブラシの回転が低下しにくいので、塵埃を掻
き上げる能力を低下させず、被掃除面から衝撃が加わっ
ても、電動機のケース部が弾性体からなる支持体にて固
定されていることにより電動機に衝撃が加わることを防
止し、回転の伝達に悪影響を与えることを防止できる。According to the suction port body of the electric vacuum cleaner of the present invention, the rotating shaft is fixed to the suction port body, the case portion is fixed to the inside of the brush base by the support made of an elastic body, and the electric motor is arranged. Since the rotating brush is rotated by rotating the part, the suction port main body can be downsized, and the case part with large inertial force is rotated with respect to the rotation axis, so even if there is resistance from the surface to be cleaned, it will rotate. Since the rotation of the brush is hard to decrease, the ability to scrape dust is not reduced, and even if a shock is applied from the surface to be cleaned, the case part of the motor is fixed by the support made of elastic body It is possible to prevent an impact from being applied and to prevent the transmission of rotation from being adversely affected.
第１図は本発明の電気掃除機の吸込口体の一実施例を示
す断面図、第２図は同上一部を切り欠いた斜視図、第３
図は本発明の他の実施例を示す断面図、第４図は本発明
のさらに他の実施例を示す断面図、第５図は従来例の電
気掃除機の吸込口体を示す一部を切り欠いた斜視図であ
る。 11……吸込口本体、15……吸込口、17……接続管、21…
…回転ブラシ、22……ブラシ台、23……ブラシ部材とし
てのブラシ毛、25……電動機、27……支持体。FIG. 1 is a sectional view showing an embodiment of a suction port body of an electric vacuum cleaner according to the present invention, FIG. 2 is a perspective view with a part thereof cut away, and FIG.
FIG. 4 is a cross-sectional view showing another embodiment of the present invention, FIG. 4 is a cross-sectional view showing still another embodiment of the present invention, and FIG. 5 is a partial view showing a suction inlet of a conventional vacuum cleaner. It is the notched perspective view. 11 …… Suction port body, 15 …… Suction port, 17 …… Connection pipe, 21…
… Rotating brushes, 22 …… Brush bases, 23 …… Brush bristles as brush members, 25 …… Electric motors, 27 …… Supports.
Claims (2)
に連通する接続管を有する吸込口本体と、 この吸込口本体内に前記吸込口に臨んで回転自在に設け
られた筒状のブラシ台の表面にブラシ部材を配設した回
転ブラシと、 前記ブラシ台の内部に弾性体からなる支持体を介してこ
のブラシ台に固定されたケース部、および、このケース
部に対して回転自在で前記吸込口本体に固定された回転
軸を有する電動機とを備え、 この電動機を駆動すると前記ケース部が回転して前記回
転ブラシを回転駆動させる ことを特徴とする電気掃除機の吸込口体。1. A suction port main body having a suction port on its lower surface and a connecting pipe communicating with the suction port, and a cylindrical brush base rotatably provided in the suction port main body facing the suction port. A rotary brush having a brush member disposed on the surface of the brush base; a case portion fixed to the brush base via a support made of an elastic body inside the brush base; A suction port body of an electric vacuum cleaner, comprising: an electric motor having a rotary shaft fixed to a suction port body; and when the motor is driven, the case portion is rotated to rotationally drive the rotary brush.
に位置させた ことを特徴とする特許請求の範囲第１項記載の電気掃除
機の吸込口体。2. The suction port body of the electric vacuum cleaner according to claim 1, wherein the electric motor in the brush base is located at the center of the suction port body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304377A JPH0793914B2 (en) | 1986-12-20 | 1986-12-20 | Vacuum cleaner suction body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304377A JPH0793914B2 (en) | 1986-12-20 | 1986-12-20 | Vacuum cleaner suction body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63158031A JPS63158031A (en) | 1988-07-01 |
| JPH0793914B2 true JPH0793914B2 (en) | 1995-10-11 |
Family
ID=17932286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61304377A Expired - Fee Related JPH0793914B2 (en) | 1986-12-20 | 1986-12-20 | Vacuum cleaner suction body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0793914B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2526512B (en) * | 2014-03-19 | 2017-07-26 | Dyson Technology Ltd | Cleaning appliance |
| GB2524285B (en) | 2014-03-19 | 2016-12-07 | Dyson Technology Ltd | Cleaner head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121555U (en) * | 1974-03-18 | 1975-10-03 | ||
| JPS6348549U (en) * | 1986-09-17 | 1988-04-01 |
-
1986
- 1986-12-20 JP JP61304377A patent/JPH0793914B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63158031A (en) | 1988-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |