JP2607655B2 - Manufacturing equipment for metal tubes with built-in striatum - Google Patents
Manufacturing equipment for metal tubes with built-in striatumInfo
- Publication number
- JP2607655B2 JP2607655B2 JP31925188A JP31925188A JP2607655B2 JP 2607655 B2 JP2607655 B2 JP 2607655B2 JP 31925188 A JP31925188 A JP 31925188A JP 31925188 A JP31925188 A JP 31925188A JP 2607655 B2 JP2607655 B2 JP 2607655B2
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- metal
- striatum
- striated body
- built
- 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
- 229910052751 metal Inorganic materials 0.000 title claims description 69
- 239000002184 metal Substances 0.000 title claims description 69
- 210000001577 neostriatum Anatomy 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 230000009467 reduction Effects 0.000 claims description 10
- 238000004553 extrusion of metal Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Manufacturing Of Electric Cables (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は例えば光ファイバ複合架空地線の光ファイバ
ユニットやCATVケーブル等のように、光ケーブル、通信
ケーブル等の線条体の保護あるいは１つの導体としての
線条体内蔵金属管の製造装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the protection of a linear body such as an optical cable and a communication cable, such as an optical fiber unit of an optical fiber composite overhead ground wire and a CATV cable, or a method of protecting one wire. The present invention relates to an apparatus for manufacturing a metal tube with a built-in striatum as a conductor.
（従来の技術） 従来、この種の線条体を内蔵した金属管の製造方法と
しては、走行中の線条体にアルミニウム等の金属テープ
を縦添えして円筒状に成形し、そのシーム部を溶接する
シーム溶接法や、線条体の外側にアルミニウム等の金属
を連続押出しする方法がある。しかし、いずれの方法に
しても、造管過程において金属管が高温となる。従っ
て、線条体の熱影響を避けるために、造管直後には線条
体と金属管内周面には適度な空隙が設けられるのが一般
的な手段である。(Prior Art) Conventionally, as a method of manufacturing a metal tube incorporating this kind of striated body, a metal tape such as aluminum is vertically attached to a running striated body and formed into a cylindrical shape. Or a method of continuously extruding a metal such as aluminum outside the striatum. However, in either method, the temperature of the metal tube becomes high during the tube forming process. Therefore, in order to avoid the thermal influence of the striated body, it is a general means that an appropriate gap is provided between the striated body and the inner peripheral surface of the metal pipe immediately after pipe formation.
造管後は水冷等適当な冷却手段を用いて金属管を冷却
した後、所望の外径に縮径してドラム等に巻取る。After pipe formation, the metal pipe is cooled using a suitable cooling means such as water cooling, then reduced in diameter to a desired outer diameter, and wound around a drum or the like.
この一連の加工工程において、線条体は造管が良好品
の状態になって初めて金属管内に挿入されるが、金属管
は縮径機を通過することによる伸管作用で速度が増加す
る。このため挿入された線条体が縮径機を通過すると瞬
間的に挿入速度から縮径後の金属管の速度に達するの
で、作業者がこれを検知し、線条体の端末と思われる位
置の金属管の表面に適当なマークを施している。In this series of processing steps, the striated body is inserted into the metal pipe only when the pipe is in a good condition, but the speed of the metal pipe increases due to the drawing action caused by passing through the diameter reducing machine. Therefore, when the inserted striated body passes through the diameter reducing machine, it instantaneously reaches the speed of the metal tube after diameter reduction from the insertion speed. The surface of the metal tube is marked appropriately.
（解決しようとする課題） 上述したように、作業は、線条体が挿入された後、こ
の線条体の端末が縮径機を通過すると瞬間的に線条体の
挿入速度から縮径後の金属管の速度に達するので、この
線条体の速度増加現象から線条体の端末が縮径機を通過
したと容易に判断される。(Problem to be Solved) As described above, after the striated body is inserted, when the end of the striated body passes through the diameter reducing machine, the diameter is reduced instantaneously from the insertion speed of the striated body. Since the speed of the metal tube reaches the speed of the metal tube, it is easily determined that the end of the wire has passed through the diameter reducing machine from the phenomenon of speed increase of the wire.
しかし、縮径による金属管の伸管作用、金属管故に内
部が見えない、又設備構成上、線条体の挿入位置と縮径
機とは数メートルの隔たりがあり、これらのために、線
条体の端末位置を金属管上にマークを施すには１人の作
業者では必ず時間遅れが生じ、正確にマークすることが
不可能であった。又作業者を複数人配置し、合図等の手
段をとっても、瞬間的な動作が要求されるため、正確な
マークが施せず、長さの計尺誤差が生じ、金属管を所定
量巻取った後に巻替え等を行ない、長さを調尺する必要
があり、生産性が低く、作業能率向上の阻害要因となっ
ていた。However, due to the reduction of the diameter of the metal tube due to the reduction in diameter, the inside is not visible because of the metal tube, and there is a distance of several meters between the insertion position of the striatum and the diameter reduction machine due to the equipment configuration. In order to mark the end position of the strip on the metal tube, a time delay always occurred by one worker, and it was impossible to mark accurately. Also, even if a plurality of workers are arranged and signals are taken, instantaneous operation is required, so accurate marks cannot be made, a length measurement error occurs, and a predetermined amount of metal pipe is wound. It was necessary to perform rewinding or the like afterwards to measure the length, which was low in productivity and hindered improvement in work efficiency.
（課題を解決するための手段） 本発明は上述の問題点を解消した線条体内蔵金属管の
製造装置を提供するもので、その特徴は、線条体を送り
出す送り込みキャプスタン、線条体の始端が縮径機を通
過し金属管と一体となったことを検知する検出器、線条
体の始端位置を金属管外周上にマークするマーキング装
置、このマークした位置から金属管の長さの計尺を開始
する計尺装置を備えていることにある。(Means for Solving the Problems) The present invention provides an apparatus for manufacturing a metal tube with a built-in striatum, which solves the above-mentioned problems, and is characterized by a feed capstan for feeding the striatum, a striatum. Detector that detects that the starting end of the wire has passed through the diameter reducing machine and has become integral with the metal tube, a marking device that marks the starting end position of the striatum on the outer periphery of the metal tube, and the length of the metal tube from the marked position A measuring device for starting the measuring process.
第１図はシーム溶接法による本発明の製造装置の具体
例の線図的構成図、第２図は第１図における線条体送り
込みキャプスタンの機構図である。FIG. 1 is a diagrammatic structural view of a specific example of the manufacturing apparatus of the present invention using a seam welding method, and FIG. 2 is a mechanism diagram of a filament feeding capstan in FIG.
図面において、（１）は光ケーブル等の線条体、
（２）は金属管の素材となるアルミニウムテープ等の金
属テープ、（３）は線条体（１）を送り出す機能と、線
条体の始端が縮径機を通過することを検知する検出機能
を具えた線条体送り込みキャプスタン、（４）は造管装
置、（５）は金属管の引取り装置、（６）は縮径機、
（７）は金属管上に線条体（１）の始端位置を表示する
マーキング装置、（８）は縮径機（６）の最終端に位置
するダイス（6a）とマーキング装置（７）の距離（L1）
及び計尺点の距離（L2）を計尺する計尺装置、（９）は
金属管の引取機、（10）は金属管の巻取機である。In the drawings, (1) is a striatum such as an optical cable,
(2) a metal tape such as an aluminum tape used as a material for the metal pipe; (3) a function of sending out the striated body (1) and a detecting function of detecting that the starting end of the striated body passes through the diameter reducing machine. A striated feed capstan equipped with: (4) a tube forming device, (5) a metal tube take-up device, (6) a diameter reducing machine,
(7) is a marking device for indicating the starting position of the striatum (1) on the metal tube, and (8) is a die (6a) and a marking device (7) located at the last end of the diameter reducing machine (6). distance (L 1)
And a measuring device for measuring the distance (L 2 ) between the measuring points, (9) a take-up machine for a metal tube, and (10) a winder for a metal tube.
（作用） 以下に第１図に示す本発明装置を用いた線条体内蔵金
属管の製造方法を説明する。(Operation) Hereinafter, a method for manufacturing a metal tube with a built-in striatum using the apparatus of the present invention shown in FIG. 1 will be described.
造管装置（４）にアルミニウムテープ等の金属テープ
（２）を供給し、この造管装置（４）で金属テープ
（２）を円筒状に成形し、金属テープ（２）の両側縁の
突合せ部を長さ方向に連続して溶接し、シーム溶接管
（20）を製造する。この造管に必要な速度v0は引取り装
置（５）で与えられる。A metal tape (2) such as an aluminum tape is supplied to a tube forming device (4), and the metal tape (2) is formed into a cylindrical shape by the tube forming device (4). The parts are continuously welded in the longitudinal direction to produce a seam welded pipe (20). The speed v 0 required for this tube formation is given by the take-off device (5).
良好なシーム溶接管（20）が得られた状態で、線条体
（１）を送り込みキャプスタン（３）に把持させ、造管
装置（４）で円筒状成形の過程にある金属テープに添え
て挿入する。この時の線条体（１）の送り込み速度ｖは
造管速度v0と同等又はそれ以下である。上記送り込みキ
ャプスタン（３）は可変速モータ（11）（第２図参照）
で駆動されており、この駆動系には原動側と従動側の駆
動軸に軸の回転を検出する検出器（13A）（13B）（本具
体例では回転電圧発生器）を設けてあり、この検出器
（13A）（13B）の間には一方向スベリクラッチ（12）を
介在させてある。従って線条体（１）を造管装置（４）
に送り込んでいる状態では検出器（13A）（13B）から発
生する電圧は等しくなるようにしてある。After a good seam welded pipe (20) is obtained, the striated body (1) is fed and held by the capstan (3), and is attached to the metal tape in the process of forming into a cylindrical shape by the pipe forming apparatus (4). Insert. Feeding speed v of the striatum when (1) is pipe-making speed v 0 and equal to or less. The feed capstan (3) is a variable speed motor (11) (see Fig. 2).
This drive system is provided with detectors (13A) (13B) (rotation voltage generator in this specific example) for detecting rotation of the shafts on the driving side and the driven side. A one-way sliding clutch (12) is interposed between the detectors (13A) and (13B). Therefore, the striated body (1) is connected to the pipe forming device (4).
In this state, the voltages generated from the detectors (13A) and (13B) are equalized.
シーム溶接管（20）内に挿入された線条体（１）の始
端が、縮径機（６）の最終端に位置するダイス（6a）を
通過すると、それまで引取り装置（５）の速度v0と同等
か又はそれ以下の速度にあった線条体（１）の速度ｖ
が、金属管（20）が縮径されることによる伸管作用で縮
径の度合に見合った分だけ増速した速度vfまで瞬間的に
増速される。この時、送り込みキャプスタン（３）では
線条体（１）がキャプスタンホイール（14）と把持ベル
ト（15）によって把持されているため、線条体（１）の
速度ｖが速度vfに達する過程において、一方向スベリク
ラッチ（12）で駆動軸が切離され、キャプスタンホイー
ル（14）と連結された軸（16）を介して設けられた検出
器（電圧発生器）（13B）から発生する電圧が増加してV
Bとなり、原動側に設けられた検出器（電圧発生器）（1
3A）から発生している電圧VAとで差が生じる。この状態
を第３図に示す。When the starting end of the filament (1) inserted into the seam welded pipe (20) passes through the die (6a) located at the final end of the diameter reducing machine (6), the drawing device (5) Speed v of the striatum (1) which was equal to or lower than the speed v 0
But the metal tube (20) is instantaneously accelerated to the speed v f was accelerated by an amount commensurate with the degree of reduced diameter Shinkan action by being reduced in diameter. In this case, feed for capstan (3) in the striatum (1) is gripped by the capstan wheel (14) and gripping the belt (15), the speed v is the speed v f of the striatum (1) In the process of reaching, the drive shaft is separated by the one-way sliding clutch (12), and the detector (voltage generator) (13B) provided via the shaft (16) connected to the capstan wheel (14) The generated voltage increases to V
B and the detector (voltage generator) (1
3A) and the voltage VA generated therefrom. This state is shown in FIG.
この各々の電圧を電圧比較器（30）で比較し、例えば
VB＝1.05VAとなった時点で電気的信号を電気的信号処理
装置（31）に送る。この電気的信号処理装置（31）にお
いて、この信号をもとに縮径後の金属管（21）通過長さ
を計測器（８）に取付けてあるパルス発生器（18）（例
では１パルス/10cm）の作動を開始し、金属管（21）の
長さを計測する。この計測した長さが、ダイス（6a）と
金属管（21）の表面上にマークするマーキング装置
（７）の距離L1に達したら（即ち、線条体（１）の始端
がマーキング装置（７）の位置に達する）、電気的信号
処理装置（31）からマーキング装置（７）に信号を送
り、金属管（21）の表面上にマーキングを施す。Each of these voltages is compared by a voltage comparator (30), for example,
Electrical signal processing device the electrical signal at the time point when V B = 1.05V A send (31). In this electrical signal processing device (31), a pulse generator (18) (in the example, one pulse) attached to a measuring instrument (8) is used to measure the passage length of the metal tube (21) after diameter reduction based on this signal. / 10cm) and measure the length of the metal tube (21). The length of the measurement, starting the marking device of the die reaches the distance L 1 of the marking device to mark on the surface of the (6a) and the metal tube (21) (7) (i.e., striatum (1) ( 7)), a signal is sent from the electrical signal processing device (31) to the marking device (7), and marking is performed on the surface of the metal tube (21).
なお、計尺器（８）での計測を継続させ、ダイス（6
a）と計尺器（８）の距離L2に達したら（即ち、線条体
（１）の始端が計尺器（８）の位置に達する）、電気的
信号処理装置（31）から計尺表示器（19）に信号を送っ
て表示値をゼロリセットさせ、線条体（１）を内蔵した
金属管の長さの計測を開始する。このように線条体
（１）を内蔵した金属管を順次、連続して引取機で引取
り、巻取り機で巻取る。The measurement with the measuring instrument (8) is continued and the dice (6
(Upon reaching distance L 2 8) (i.e., striatum (1) a) a total length unit start reaches its position of total length unit (8)), a total of from the electrical signal processing device (31) A signal is sent to the scale display (19) to reset the display value to zero, and measurement of the length of the metal tube containing the striatum (1) is started. The metal pipe containing the striated body (1) is sequentially and continuously taken up by the take-up machine and wound up by the take-up machine.
（実施例） 本発明の製造装置を用いて線条体内蔵金属管を製造し
た場合と、従来の製造方法による場合について、線条体
始端位置と計尺開始点の誤差について比較した結果は第
１表の通りである。本発明の製造装置を用いた場合は誤
差が著しく減少することが確認された。(Example) The result of comparing the error between the starting point of the striatum and the measuring point at the time of manufacturing the striated metal tube using the manufacturing apparatus of the present invention and the case of the conventional manufacturing method is as follows. It is as shown in Table 1. It was confirmed that the error was significantly reduced when the manufacturing apparatus of the present invention was used.
（発明の効果） 以上説明したように、本発明の装置を用いて線条体内
蔵金属管を製造するときは、金属管の長さ計尺が正確に
行なうことができ、巻替え調尺等の作業が省略でき、生
産性の向上に大きな効果が期待できる。 (Effects of the Invention) As described above, when manufacturing a metal tube with a built-in striatum using the apparatus of the present invention, the length measurement of the metal tube can be performed accurately, and the rewinding scale and the like can be performed. Work can be omitted, and a great effect can be expected to improve productivity.
又線条体の挿入作業から計尺開始までの作業における
従来の入手を介した作業が不要となり、人、生産性の向
上にも大きな効果がある。In addition, the operation from the insertion of the striatum to the start of the measuring process through the conventional acquisition becomes unnecessary, and this has a great effect on the improvement of people and productivity.
従って、光ファイバ複合架空地線の光ファイバユニッ
トやCATVケーブル等のように、線条体入り金属管を製造
する設備において利用するとき、その工業的価値は大き
いものがある。Therefore, when used in equipment for manufacturing a metal tube with a striated body, such as an optical fiber unit of an optical fiber composite overhead ground wire and a CATV cable, there is a great industrial value.
第１図は本発明の線条体内蔵金属管の製造装置の具体例
の線図的構成図である。 第２図は第１図における線条体送り込みキャプスタンの
機構図である。 第３図は電圧と速度の変化の一例を示す線図である。 １……線条体、２……金属テープ、３……線条体送り込
みキャプスタン、４……造管装置、５……造管後の引取
り装置、６……縮径機、6a……ダイス、７……マーキン
グ装置、８……計尺機、９……縮径後の金属管の引取り
キャプスタン、10……巻取機、11……送り込みキャプス
タンの駆動モータ、12……一方向スベリクラッチ、13A,
13B……回転検出器、14……回転ホイール、15……把持
ベルト、16……回転軸、17……回転円板、18……パルス
発生器、19……長尺表示器、20……造管後の金属管、21
……縮径後の金属器、30……電圧比較器、31……電気的
信号処理装置、ｖ……線条体の送り込み速度、v0……造
管製造速度、vf……縮径後の金属管の速度。FIG. 1 is a diagrammatic structural view of a specific example of the apparatus for manufacturing a metal tube with a built-in filament according to the present invention. FIG. 2 is a mechanism diagram of the filament feed capstan in FIG. FIG. 3 is a diagram showing an example of changes in voltage and speed. DESCRIPTION OF SYMBOLS 1 ... Striatal body, 2 ... Metal tape, 3 ... Striatal feeding capstan, 4 ... Tube forming device, 5 ... Pulling-up device after pipe forming, 6 ... Diameter reducing machine, 6a ... … Die, 7… Marking device, 8… Measuring machine, 9… Captive take-up capstan of metal tube after diameter reduction, 10… Winding machine, 11… Drive motor of feed capstan, 12… … One-way sliding clutch, 13A,
13B: rotation detector, 14: rotating wheel, 15: gripping belt, 16: rotating shaft, 17: rotating disk, 18: pulse generator, 19: long display, 20 ... Metal pipe after pipe making, 21
…… Metal device after diameter reduction, 30 …… Voltage comparator, 31 …… Electrical signal processing device, v …… Filar line feeding speed, v 0 …… Tubing production speed, v f …… Diameter reduction After metal tube speed.
Claims (5)
円筒状に成形しそのシーム部を溶接するか、又は金属の
連続押出しにより金属管を作り、その後金属管を縮径し
て線条体と金属管を一体とする線条体内蔵金属管の製造
装置において、線条体を送り出す送り込みキャプスタ
ン、線条体の始端が縮径機を通過し金属管と一体となっ
たことを検知する検出器、線条体の始端位置を金属管外
周上にマークするマーキング装置、このマークした位置
から金属管の長さの計尺を開始する計尺装置を備えてい
ることを特徴とする線条体内蔵金属管の製造装置。(1) A metal tape is longitudinally attached to a running striated body and formed into a cylindrical shape, and a seam portion thereof is welded, or a metal tube is formed by continuous extrusion of metal, and then the metal tube is reduced in diameter. In a manufacturing apparatus for a metal pipe with a built-in striated body, which integrates the striated body and the metal pipe, the feed capstan for sending out the striated body, and the starting end of the striated body are integrated with the metal pipe through a diameter reducing machine. It is characterized by comprising a detector for detecting that, a marking device for marking the starting end position of the striatum on the outer periphery of the metal tube, and a measuring device for starting measuring the length of the metal tube from the marked position. For manufacturing metal tubes with a built-in striatum.
が、可変速モータで駆動され少なくとも金属管を製造す
る速度に対して任意の比率で線条体を送り出すことがで
きることを特徴とする請求項（１）記載の線条体内蔵金
属管の製造装置。2. A feed capstan for feeding a striated body which is driven by a variable speed motor and can feed the striated body at an arbitrary ratio with respect to at least a speed at which a metal tube is manufactured. 1) An apparatus for manufacturing a metal tube with a built-in striatum according to the above.
が、線条体が縮径機を通過し金属管と一体となったこと
を検知する機能を具えていることを特徴とする請求項
（１）記載の線条体内蔵金属管の製造装置。3. A feed capstan for feeding out a striated body has a function of detecting that the striated body has passed through a diameter reducing machine and integrated with a metal pipe. ).
後の金属管の走行長さを計測し、線条体が金属管と一体
となった位置とマーキングする位置の間隔に相当する距
離を計測した時点でマーキング装置を作動させる機能を
具えていることを特徴とする請求項（３）記載の線条体
内蔵金属管の製造装置。4. The running length of the metal tube after diameter reduction is measured by a signal in which the striatum is integrated with the metal tube, and the distance between the position where the striatum is integrated with the metal tube and the marking position is measured. The apparatus for manufacturing a metal tube with a built-in striatum according to claim (3), further comprising a function of operating a marking device when a distance corresponding to (i) is measured.
後の金属管の走行長さを計測し、線条体が金属管と一体
となった位置と計尺装置の位置の間隔に相当する距離を
計測した時点で計尺装置を動作させる機能を具えている
ことを特徴とする請求項（３）記載の線条体内蔵金属管
の製造装置。5. The running length of the metal pipe after diameter reduction is measured by a signal in which the filament is integrated with the metal pipe, and the position where the filament is integrated with the metal pipe and the position of the measuring instrument are measured. The apparatus for producing a metal tube with a built-in striatum according to claim (3), further comprising a function of operating the measuring device when a distance corresponding to the interval of (i) is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31925188A JP2607655B2 (en) | 1988-12-17 | 1988-12-17 | Manufacturing equipment for metal tubes with built-in striatum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31925188A JP2607655B2 (en) | 1988-12-17 | 1988-12-17 | Manufacturing equipment for metal tubes with built-in striatum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02165521A JPH02165521A (en) | 1990-06-26 |
| JP2607655B2 true JP2607655B2 (en) | 1997-05-07 |
Family
ID=18108106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31925188A Expired - Fee Related JP2607655B2 (en) | 1988-12-17 | 1988-12-17 | Manufacturing equipment for metal tubes with built-in striatum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2607655B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531307B (en) * | 2013-10-20 | 2015-12-02 | 无锡锡洲电磁线有限公司 | For the electromagnetic wire vibration absorber of laser diameter measuring instrument |
-
1988
- 1988-12-17 JP JP31925188A patent/JP2607655B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02165521A (en) | 1990-06-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |