JPH0420153B2 - - Google Patents
Info
- Publication number
- JPH0420153B2 JPH0420153B2 JP59004382A JP438284A JPH0420153B2 JP H0420153 B2 JPH0420153 B2 JP H0420153B2 JP 59004382 A JP59004382 A JP 59004382A JP 438284 A JP438284 A JP 438284A JP H0420153 B2 JPH0420153 B2 JP H0420153B2
- Authority
- JP
- Japan
- Prior art keywords
- shroud
- flange
- earthquake
- pin
- shroud head
- 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
Links
- 238000010276 construction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、炉心を収容したシユラウドに対する
シユラウドヘツドの水平移動を防止したシユラウ
ドヘツド耐震装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a shroud head earthquake protection device that prevents horizontal movement of the shroud head relative to a shroud that houses a reactor core.
第１図は沸騰水型原子炉の概略構成を示すもの
で、原子炉圧力容器１内には円筒形のシユラウド
２が、圧力容器１と同心状に取付けられている。
シユラウド２の内部には炉心３を下方より支持す
る炉心支持板４および炉心３を上方より支持する
上部格子板５が取付けられている。またシユラウ
ド２の上端は、シユラウド２内の気液二相流体が
シユラウド２外部へ漏れないようにするために、
シユラウドヘツド６により閉塞されている。な
お、符号７はシユラウドヘツド６上に取付けられ
た気水分離器である。
FIG. 1 shows a schematic configuration of a boiling water nuclear reactor, in which a cylindrical shroud 2 is installed concentrically within a reactor pressure vessel 1.
A core support plate 4 that supports the reactor core 3 from below and an upper grid plate 5 that supports the reactor core 3 from above are attached to the inside of the shroud 2. In addition, the upper end of the shroud 2 is designed to prevent the gas-liquid two-phase fluid inside the shroud 2 from leaking to the outside of the shroud 2.
It is closed by a shroud head 6. Note that the reference numeral 7 is a steam/water separator mounted on the shroud head 6.
シユラウドヘツド６のシユラウド２に対する取
付けは、第２図および第３図に示す如くシユラウ
ド２上端に設けられたフランジ２ａとシユラウド
ヘツド６下端に設けられたフランジ６ａとをシユ
ラウドヘツドボルト８により上下方向に締付ける
ことによつて行なわれる。すなわちシユラウドヘ
ツドボルト８はフランジ２ａ，６ａのボルト孔２
ｂ，６ｂに下方より上方へ向けて挿入され、ボル
ト８の外周にはスリーブ９，１０，１１がフラン
ジ６ａ上に順次嵌合されて最上部にナツト１２が
螺合される。したがつて、ナツト１２の回転操作
によりフランジ２ａ，６ａが上下方向に締付けら
れることになる。 To attach the shroud head 6 to the shroud 2, tighten the flange 2a provided at the upper end of the shroud 2 and the flange 6a provided at the lower end of the shroud head 6 in the vertical direction using shroud head bolts 8, as shown in FIGS. 2 and 3. It is done by That is, the shroud head bolt 8 is inserted into the bolt hole 2 of the flanges 2a, 6a.
sleeves 9, 10, and 11 are sequentially fitted onto the outer periphery of the bolt 8 on the flange 6a, and a nut 12 is screwed onto the uppermost portion. Therefore, by rotating the nut 12, the flanges 2a, 6a are tightened in the vertical direction.
またフランジ２ａ，６ａの接合面間における相
互の水平移動を防止するために、シユラウドヘツ
ド６の耐震装置１３が設けられている。これは第
４図に示す如くフランジ２ａ，６ａの各接合面に
形成された円形穴２ｃ，６ｃに共通の耐震ピン１
４を嵌合させた構成のものであり、これによつて
地震時等におけるシユラウドヘツド６の水平移動
が防止される。なおこのような耐震装置１３は円
周方向に複数（たとえば36個）設けられるが、そ
の１個のみを図示する。 Furthermore, an earthquake-proof device 13 for the shroud head 6 is provided to prevent mutual horizontal movement between the joint surfaces of the flanges 2a and 6a. As shown in Fig. 4, this is an earthquake-resistant pin 1 that is common to circular holes 2c and 6c formed on the joint surfaces of flanges 2a and 6a.
4 are fitted into each other, thereby preventing horizontal movement of the shroud head 6 during an earthquake or the like. Although a plurality (for example, 36) of such seismic devices 13 are provided in the circumferential direction, only one of them is illustrated.
ところがシユラウド２側のフランジ２ａに形成
された円形穴２ｃの位置とシユラウドヘツド６側
のフランジ６ａに形成された円形穴６ｃの位置と
は必ずしも一致しない。これはシユラウド２およ
びシユラウドヘツド６に、製造段階におけるひず
みが生じるためである。そこで、従来ではシユラ
ウドヘツド６をシユラウド２上に据付ける際、い
つたんシユラウドヘツド６をシユラウド２に対し
て仮合せし、双方の円形穴２ｃ，６ｃの位置ずれ
量を測定し、その位置ずれ量だけ耐震ピン１４の
一端部と他端部とを偏心させて加工し、その一端
部をシユラウド２側のフランジ２ａの円形穴２ｃ
に嵌合させ、耐震ピン１４の他端部にシユラウド
ヘツド６側のフランジ６ａの円形穴６ｃを嵌合さ
せるようにしていた。なお、符号１５は耐震ピン
１４の回転を禁止するための回り止めピンであ
る。また符号１６はシユラウド２側のフランジ２
ａの内周上端部に溶接された筒状板で、これはフ
ランジ２ａ，６ａの接合部に水を溜めて蒸気の漏
れを防止するためのものである。 However, the position of the circular hole 2c formed in the flange 2a on the shroud 2 side does not necessarily match the position of the circular hole 6c formed in the flange 6a on the shroud head 6 side. This is because the shroud 2 and shroud head 6 are strained during the manufacturing process. Therefore, conventionally, when installing the shroud head 6 on the shroud 2, the shroud head 6 is temporarily attached to the shroud 2, the amount of positional deviation of both circular holes 2c, 6c is measured, and the seismic resistance is adjusted by the amount of positional deviation. One end and the other end of the pin 14 are machined eccentrically, and the one end is inserted into the circular hole 2c of the flange 2a on the shroud 2 side.
The other end of the seismic pin 14 was fitted into the circular hole 6c of the flange 6a on the shroud head 6 side. Note that reference numeral 15 is a rotation stopper pin for prohibiting rotation of the earthquake-resistant pin 14. Also, reference numeral 16 is the flange 2 on the shroud 2 side.
This is a cylindrical plate welded to the upper end of the inner periphery of the flanges 2a and 6a, and is used to store water at the joint between the flanges 2a and 6a to prevent steam leakage.
シユラウド２上にシユラウドヘツド６を据付け
る際、いつたんシユラウドヘツド６をシユラウド
２に対して仮合せして双方の円形穴２ｃ，６ｃの
位置ずれ量を測定し、その位置ずれ量だけ耐震ピ
ン１４の一端部と他端部とを偏心させて加工して
いたため、耐震ピン１４をあらかじめ加工してお
くことができず、しかも耐震ピン１４は１本ずつ
偏心量が異なるものとなる。したがつて耐震ピン
１４の加工に多くの時間を費やし、シユラウドヘ
ツド６の据付の工期が長期に及ぶ問題があつた。
When installing the shroud head 6 on the shroud 2, temporarily align the shroud head 6 with the shroud 2, measure the amount of positional deviation of both circular holes 2c, 6c, and measure the amount of positional deviation at one end of the seismic pin 14. Since the seismic pins 14 cannot be machined in advance because they are machined with one end and the other end eccentric, each seismic pin 14 has a different amount of eccentricity. Therefore, there was a problem in that a lot of time was spent machining the seismic pins 14, and the installation period of the shroud head 6 was prolonged.
本発明はこのような事情にもとづいてなされた
もので、その目的は、構成部品をあらかじめ加工
しておくこと、およびすべての構成部品を均一寸
法にすることを可能にし、これによつてシユラウ
ドヘツド据付の工期短縮をはかり得るシユラウド
ヘツドの耐震装置を提供することにある。
The present invention was developed based on these circumstances, and its purpose is to make it possible to pre-process the component parts and to make all the component parts uniform in size, thereby making it possible to install the shroud head easily. An object of the present invention is to provide an earthquake-resistant device for a shroud head that can shorten the construction period.
以上の目的達成のため、本発明の装置は、内径
と外径とを偏心させた偏心スリープと、一端部と
他端部とを偏心させた耐震ピンとを具備し、偏心
スリーブをシユラウド側のフランジの円形穴内に
嵌合させ、この偏心スリーブ内に耐震ピンの一端
部を嵌合させ、さらに耐震ピンの他端部にシユラ
ウドヘツド側のフランジの円形穴を嵌合させて構
成される。
In order to achieve the above object, the device of the present invention includes an eccentric sleeve whose inner diameter and outer diameter are eccentric, and an earthquake-resistant pin whose one end and the other end are eccentric, and the eccentric sleeve is attached to a flange on the shroud side. One end of the seismic pin is fitted into the eccentric sleeve, and the other end of the seismic pin is fitted into the circular hole of the flange on the shroud head side.
したがつて、耐震ピンを偏心スリーブに対して
回転することにより、シユラウド側のフランジの
円形穴と耐震ピンの他端部との偏心量を連続的に
変化させることができ、シユラウド側とシユラウ
ドヘツド側の円形穴相互の偏心量に適宜一致させ
ることができる。このため偏心スリーブおよび耐
震ピンをあらかじめ均一寸法に多数加工しておく
ことができ、シユラウドヘツド据付の工期を短縮
することができる。 Therefore, by rotating the seismic pin with respect to the eccentric sleeve, it is possible to continuously change the amount of eccentricity between the circular hole in the flange on the shroud side and the other end of the seismic pin. The eccentricity between the circular holes can be adjusted as appropriate. Therefore, a large number of eccentric sleeves and seismic pins can be machined to uniform dimensions in advance, and the construction period for installing the shroud head can be shortened.
以下、本発明の一実施例を第５図および第６図
を参照して説明する。
An embodiment of the present invention will be described below with reference to FIGS. 5 and 6.
第５図はシユラウド側のフランジ２ａとシユラ
ウドヘツド側のフランジ６ａとの接合部分を示す
もので、符号２１は両フランジ２ａ，６ａの接合
面間における相互の水平移動を防止するシユラウ
ドヘツドの耐震装置である。 Fig. 5 shows the joint between the flange 2a on the shroud side and the flange 6a on the shroud head side, and reference numeral 21 is an earthquake-resistant device for the shroud head that prevents mutual horizontal movement between the joint surfaces of both flanges 2a and 6a. .
一方、符号２２は内径と外径とを偏心させた
（偏心量ｅ）偏心スリーブ、２３は一端部（下半
部）２３ａと他端部（上半部）２３ｂとを偏心さ
せた（偏心量ｆ）耐震ピンであり、いずれも耐震
装置２１の構成部品である。なお、偏心量ｅ，ｆ
は等しく設定される。また第５図中符号Ｃは耐震
ピン２３の他端部２３ｂの中心線、Caは偏心ス
リーブ２２の外径中心線、Cbは偏心スリーブ２
２の内径中心線を示している。また耐震ピン２３
は一端部２３ａを大径Da、他端部２３ｂを小径
Dbとし、かつDa／２≧Db／２＋ｆとしている。 On the other hand, reference numeral 22 denotes an eccentric sleeve in which the inner diameter and outer diameter are eccentric (amount of eccentricity e), and 23 is an eccentric sleeve in which one end (lower half) 23a and the other end (upper half) 23b are eccentric (amount of eccentricity). f) Earthquake-resistant pins, all of which are component parts of the earthquake-resistant device 21. In addition, the eccentricity e, f
are set equal. Further, in FIG. 5, symbol C is the center line of the other end 23b of the earthquake-resistant pin 23, C a is the outer diameter center line of the eccentric sleeve 22, and C b is the center line of the eccentric sleeve 22.
The inner diameter center line of No. 2 is shown. Also, earthquake-resistant pin 23
has one end 23a with a large diameter D a and the other end 23b with a small diameter
D b and D a /2≧D b /2+f.
前記偏心スリーブ２２はシユラウド側のフラン
ジ２ａの円形穴２ｃ内に嵌合されている。また前
記耐震ピン２３は一端部２３ａを偏心スリーブ２
２内に嵌合させ、他端部２３ｂをシユラウドヘツ
ド側のフランジ６ａの円形穴６ａ内に、径および
長さ方向に適度の余裕をもつて嵌合させている。
そしてシユラウド側のフランジ２ａの内周面より
径方向外方へ向けて回り止めピン１５が打込まれ
ている。この回り止めピン１５は偏心スリーブ２
２の周壁を貫通して耐震ピン２３内に突入し、偏
心スリーブ２２および耐震ピン２３の回転を禁止
しているものである。 The eccentric sleeve 22 is fitted into a circular hole 2c of a flange 2a on the shroud side. Moreover, the earthquake-resistant pin 23 has one end 23a attached to the eccentric sleeve 2.
2, and the other end 23b is fitted into the circular hole 6a of the flange 6a on the shroud head side with an appropriate margin in the radial and longitudinal directions.
A detent pin 15 is driven radially outward from the inner peripheral surface of the shroud side flange 2a. This rotation stopper pin 15 is connected to the eccentric sleeve 2.
The eccentric sleeve 22 and the seismic pin 23 are prevented from rotating by penetrating the circumferential wall of the seismic pin 23 and entering the seismic pin 23.
そこで、シユラウドヘツドのシユラウド上への
据付けは次のように行なわれる。 Therefore, the shroud head is installed on the shroud as follows.
すなわち、シユラウドヘツドのフランジ６ａを
シユラウドのフランジ２ａ上にいつたん仮合せ
し、双方の円形穴２ａ，６ｃの位置ずれ量を測定
する。その後、耐震ピン２３の一端部２３ａを偏
心スルーブ２２内に嵌合させ、かつ両者を相互に
回転させることにより、偏心スリーブ２２の外径
中心線Caと耐震ピン２３の他端部２３ｂ中心線
Ｃとの偏心量を、両フランジ２ａ，６ａの円形穴
２ｃ，６ｃの位置ずれ量と一致させる。したがつ
て、偏心スリーブ２２をフランジ２ａの円形穴２
ｃ内に嵌合させ、中心線Ca，Ｃの偏心方向を両
円形穴２ｃ，６ｃの位置ずれ方向と一致させるこ
とにより、耐震ピン２３の他端部２３ｂとフラン
ジ６ａの円形穴６ｃとを嵌合させて、フランジ６
ａ，２ａを合せ、シユラウドヘツドをシユラウド
上に据付けることができる。この場合、第６図に
示す如く、耐震ピン２３の回転により他端部２３
ｂ中心線Ｃは偏心スリーブ２２の内径中心線Cb
を中心として円Ａ上を移動することができ、偏心
スリーブ２２の回転により内径中心線Cbは外径
中心線Caを中心として円Ｂ上を移動することが
できるので、結局、耐震ピン２３の他端部２３ｂ
中心線Ｃを、耐震ピン２３の回転と偏心スリーブ
２２の回転との組合せによつて、円Ｏ内のいかな
る位置にも移動させることができる。ちなみに円
Ｏの半径は、中心線Ca，Cbの偏心量ｅと、中心
線Cb，Ｃの偏心量ｆとの和である。なお、回り
止めピン１５の取付けは、偏心スリーブ２２およ
び耐震ピン２３の位置が決まり次第、行なうもの
とする。 That is, the flange 6a of the shroud head is temporarily fitted onto the flange 2a of the shroud, and the amount of positional deviation between the circular holes 2a and 6c is measured. Thereafter, by fitting one end 23a of the seismic pin 23 into the eccentric slube 22 and mutually rotating both, the outer diameter center line C a of the eccentric sleeve 22 and the center line of the other end 23b of the seismic pin 23 The amount of eccentricity with respect to C is made to match the amount of positional deviation of the circular holes 2c, 6c of both flanges 2a, 6a. Therefore, the eccentric sleeve 22 is inserted into the circular hole 2 of the flange 2a.
The other end 23b of the earthquake-resistant pin 23 and the circular hole 6c of the flange 6a are connected by fitting the pin into the center line C and aligning the eccentric direction of the center lines C a and C with the direction of displacement of the circular holes 2c and 6c. Fit and flange 6
A, 2a can be aligned and the shroud head can be installed on the shroud. In this case, as shown in FIG.
b The center line C is the inner diameter center line C b of the eccentric sleeve 22
The rotation of the eccentric sleeve 22 allows the inner diameter center line C b to move on the circle B centering on the outer diameter center line C a . The other end 23b
The center line C can be moved to any position within the circle O by a combination of the rotation of the seismic pin 23 and the rotation of the eccentric sleeve 22. Incidentally, the radius of the circle O is the sum of the eccentricity e of the centerlines C a and C b and the eccentricity f of the centerlines C b and C. Note that the rotation stop pin 15 is attached as soon as the positions of the eccentric sleeve 22 and earthquake-resistant pin 23 are determined.
以上のような構成では、偏心スリーブ２２と耐
震ピン２３の一端部２３ａ相互の回転により、偏
心スリーブ２２の外径中心線Caと耐震ピン２３
の他端部２３ｂ中心線との偏心量を連続的に変化
させることができ、シユラウド側とシユラウドヘ
ツド側の円径穴２ｃ，６ｃ相互の偏心量に適宜一
致させることができる。したがつて、偏心スリー
ブ２２および耐震ピン２３をあらかじめ均一寸法
に多数加工しておくことができ、これによつてシ
ユラウドヘツドの据付の工期を短縮することがで
きる。 In the above configuration, due to mutual rotation of the eccentric sleeve 22 and the one end 23a of the earthquake-resistant pin 23, the outer diameter center line C a of the eccentric sleeve 22 and the earthquake-resistant pin 23 are aligned.
The amount of eccentricity with respect to the center line of the other end portion 23b can be continuously changed, and can be made to suitably match the amount of eccentricity between the circular diameter holes 2c and 6c on the shroud side and the shroud head side. Therefore, a large number of eccentric sleeves 22 and seismic pins 23 can be machined to uniform dimensions in advance, thereby shortening the construction period for installing the shroud head.
以上詳述したように、本発明によれば、構成部
品である偏心スリーブおよび耐震ピンをあらかじ
め多数加工しておくこと、並びにこれらの構成部
品を均一寸法にすることができるのでシユラウド
ヘツド据付の工期短縮をはかり得るシユラウドヘ
ツドの耐震装置を提供することができる。
As detailed above, according to the present invention, it is possible to pre-process a large number of component parts such as eccentric sleeves and seismic pins, and to make these component parts uniform in size, thereby shortening the construction period for shroud head installation. It is possible to provide an earthquake-resistant device for a shroudhead that can measure the
第１図は沸騰水型原子炉の概略構成を示す断面
図、第２図および第３図はシユラウドとシユラウ
ドヘツドの接合部を示す部分断面図、第４図はシ
ユラウドヘツドの耐震装置の従来例を示す部分断
面図、第５図は本発明の一実施例を示すシユラウ
ドヘツドの耐震装置の部分断面図、第６図は第５
図の−断面図である。
２……シユラウド、２ａ……フランジ、２ｃ…
…円形穴、６……シユラウドヘツド、６ａ……フ
ランジ、６ｃ……円形穴、２１……耐震装置、２
２……偏心スリーブ、２３……耐震ピン。
Figure 1 is a cross-sectional view showing the schematic configuration of a boiling water reactor, Figures 2 and 3 are partial cross-sectional views showing the joint between the shroud and the shroud head, and Figure 4 is a conventional example of an earthquake-resistant device for the shroud head. 5 is a partial sectional view of a shroud head earthquake resistance device showing one embodiment of the present invention; FIG.
FIG. 2... Shroud, 2a... Flange, 2c...
...Circular hole, 6... Shroud head, 6a... Flange, 6c... Circular hole, 21... Earthquake-resistant device, 2
2...Eccentric sleeve, 23...Earthquake pin.
Claims (1)
ド下端のフランジとの接合面間における相互の水
平移動を防止するシユラウドヘツドの耐震装置に
おいて、内径と外径とを偏心させシユラウド上端
のフランジの接合面に形成された円形穴内に嵌合
した偏心スリーブと、一端部と他端部とを偏心さ
せその一端部を前記偏心スリーブ内に嵌合させる
とともに他端部をシユラウドヘツド下端のフラン
ジの接合面に形成された円形穴内に嵌合させた耐
震ピンとを具備したことを特徴とするシユラウド
ヘツドの耐震装置。 ２ 前記偏心スリーブの内外径偏心量ｅと、前記
耐震ピンの両端部偏心量ｆとを、ｅ＝ｆなる関係
にしたことを特徴とする特許請求の範囲第１項記
載のシユラウドヘツドの耐震装置。[Scope of Claims] 1. In a shroud head seismic device that prevents mutual horizontal movement between the joint surfaces of a flange at the upper end of the shroud and a flange at the lower end of the shroud, the inner diameter and the outer diameter are eccentric and the joint surface of the flange at the upper end of the shroud is provided. an eccentric sleeve fitted into a circular hole formed in the sleeve, and one end and the other end eccentrically fitted, one end fitted into the eccentric sleeve, and the other end formed at the joint surface of the flange at the lower end of the shroud head. An earthquake-resistant device for a shroud head, comprising an earthquake-resistant pin fitted into a circular hole. 2. The earthquake-resistant device for a shroud head according to claim 1, wherein the eccentricity e of the inner and outer diameters of the eccentric sleeve and the eccentricity f of both ends of the earthquake-resistant pin are set in the relationship e=f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59004382A JPS60147692A (en) | 1984-01-13 | 1984-01-13 | Earthquakeproof device for shroud head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59004382A JPS60147692A (en) | 1984-01-13 | 1984-01-13 | Earthquakeproof device for shroud head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60147692A JPS60147692A (en) | 1985-08-03 |
| JPH0420153B2 true JPH0420153B2 (en) | 1992-03-31 |
Family
ID=11582803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59004382A Granted JPS60147692A (en) | 1984-01-13 | 1984-01-13 | Earthquakeproof device for shroud head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60147692A (en) |
-
1984
- 1984-01-13 JP JP59004382A patent/JPS60147692A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60147692A (en) | 1985-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |