JPH0355714B2 - - Google Patents
Info
- Publication number
- JPH0355714B2 JPH0355714B2 JP61029958A JP2995886A JPH0355714B2 JP H0355714 B2 JPH0355714 B2 JP H0355714B2 JP 61029958 A JP61029958 A JP 61029958A JP 2995886 A JP2995886 A JP 2995886A JP H0355714 B2 JPH0355714 B2 JP H0355714B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- joint member
- storage case
- tube
- 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
- 238000003860 storage Methods 0.000 claims description 21
- 238000005304 joining Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Joints With Sleeves (AREA)
Description
【発明の詳細な説明】
ａ 産業上の利用分野
本発明は、複数の管体を継ぎ合せて形成する管
路の継手部構造に関する。DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a joint structure for a pipe line formed by joining a plurality of pipe bodies.
ｂ 従来の技術とその問題点
一般に管路は継手部を備えており、この継手部
はその屈曲性によつて地盤の不等沈下、温度変
化、地震などを原因として発生する曲げ応力、温
度応力、軸方向応力等を回避もしくは減少させる
機能を有する。b. Conventional technology and its problems In general, pipes are equipped with joints, and due to their flexibility, these joints are susceptible to bending stress and temperature stress that occur due to uneven ground subsidence, temperature changes, earthquakes, etc. , has the function of avoiding or reducing axial stress, etc.
ところが、管体の施工不良や予想を上回る不等
沈下などが起こつた場合には、当初に設計した可
撓角の許容範囲又は抜け出し長さの許容範囲を越
えることがある。このような場合、従来の管路の
継手部構造では、水密性を保持する上で致命的な
欠陥となるおそれがあつた。 However, in the event of poor construction of the pipe or uneven settlement that exceeds expectations, the initially designed allowable range of deflection angle or allowable pull-out length may be exceeded. In such a case, the conventional pipe joint structure may have a fatal flaw in maintaining watertightness.
そこで本願出願人は、先行する技術として許容
範囲内においてのみ曲折、抜出しが可能な管体同
士の継手部構造を、実願昭43−112414号（実公昭
50−15233号）及び実願昭51−7348号（実公昭55
−48955号）として提出した。 Therefore, the applicant of the present application proposed a joint structure between pipes that can be bent and pulled out only within an allowable range as a prior art, in Utility Model Application No. 43-112414 (Utility Model Application No.
50-15233) and Jitsugan No. 51-7348 (Jikko 55)
-48955).
しかしながら、上述した両技術は、共に連結す
べき両管の管端部内側に凹部を形成し、該凹部に
連結手段を配置したものである（実公昭50−
15233号公報第３図、実公昭55−48955号公報第１
図参照）ため、該凹部及び連結手段が形成した管
路内を流れる流体の抵抗となり、また連結手段が
流体にさらされることから腐食が激しく望ましい
ものではなかつた。 However, in both of the above-mentioned techniques, a recess is formed inside the tube ends of the two pipes to be connected together, and a connecting means is disposed in the recess.
Figure 3 of Publication No. 15233, Publication No. 1 of Utility Model Publication No. 55-48955
(see figure), the concave portion and the connecting means act as resistance to the fluid flowing in the pipe line formed, and since the connecting means is exposed to the fluid, corrosion is severe and is not desirable.
また、両技術は、共に連結手段としてリングと
リングとをチエーン状に連結する構造を採用する
ため、管体の軸心方向のみならず、管体の半径方
向にも管体同士の突き合せ部が移動し、継手部に
段差が生じる場合があり、かかる継手部に生じる
段差は、ソケツト形の継手部においてはソケツト
に、カラーを装着した継手部においてはカラーに
各々剪断力を作用させ、破壊あるいは変形をもた
らす憂いがあつた。また管体の軸心方向への若干
の移動は、上記ソケツトあるいはカラーの軸心方
向の幅によつて止水効果を維持することができる
が、継手部に生じる段差は、継手部の円周部分に
〓間を発生させ、継手部における止水効果を極度
に低下させるものであつた。 In addition, since both technologies employ a structure in which rings are connected in a chain shape as a connecting means, the abutting portions of the tubes are not only in the axial direction of the tubes but also in the radial direction of the tubes. may move and create a level difference in the joint.The level difference that occurs in the joint can be broken by applying shearing force to the socket in the case of a socket-type joint, and to the collar in the case of a joint fitted with a collar. Or there was a sadness that brought about deformity. In addition, even if the pipe body moves slightly in the axial direction, the water-stopping effect can be maintained by the width of the socket or collar in the axial direction. This caused a gap to form in the joint, which extremely reduced the water-stopping effect at the joint.
本発明はこのような実状に鑑みてなされたもの
であつて、その目的は、上述の如き問題点を解消
し得る管路の継手部構造を提供することにある。 The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a pipe joint structure that can solve the above-mentioned problems.
ｃ 問題点を解決するための手段
上記従来技術の有する問題点を解決するため
に、本発明においては、複数の管体を継ぎ合せて
形成する管路の継手部構造において、上記隣合う
管体のそれぞれの端部に円周方向に間隔を置いて
複数の収納用ケースを該管体の軸心方向に沿つ
て、かつ唯一の開口を管端部に向けて埋設し、該
埋設した収納用ケースに管体の軸心方向にのみ摺
動可能な継手部材を挿入配置するとともに、前記
収納用ケースに前記継手部材を所定の摺動範囲に
規制するストツパを設け、前記継手部材を介して
前記隣合う管体を継ぎ合せたことを特徴とする管
路の継手部構造とした。c Means for Solving the Problems In order to solve the problems of the above-mentioned prior art, in the present invention, in the joint structure of a pipe line formed by joining a plurality of pipe bodies, the adjacent pipe bodies A plurality of storage cases are buried along the axial direction of the pipe body at intervals in the circumferential direction at each end of the pipe body, with the only opening facing the pipe end, and the buried storage cases are placed at intervals in the circumferential direction. A joint member that is slidable only in the axial direction of the pipe body is inserted into the case, and a stopper is provided in the storage case to restrict the joint member to a predetermined sliding range, and the joint member is slidable through the joint member. The pipe joint structure is characterized by joining adjacent pipe bodies.
ｄ 作用
本発明にかかる継手部構造によれば、地盤の不
等沈下、温度変化、地震などを原因として発生す
る曲げ応力、温度応力、あるいは軸方向応力等を
継手部材が管体の軸心方向に許容範囲内で摺動す
ることにより、回避もしくは減少させる機能を果
たすと共に、上記継手部材は、隣合う管体のそれ
ぞれの端部に円周方向に間隔を置いて管体の軸心
方向に沿つて、かつ唯一の開口を管端部に向けて
埋設された収納ケース内に挿入配置されたもので
あるため、該継手部材及び収納ケースが管路内を
流れる流体の抵抗となることはなく、また継手部
材が管路内を流れる流体に直接さらされることも
ない。さらに、上記継手部材は、上記収納ケース
内に管体の軸心方向にのみ摺動可能に挿入されて
いるため、上記継手部に発生する種々の応力を回
避もしくは減少させるにあたつて、継手部が管体
の半径方向に移動することはなく、継手部に段差
が生じることがない。d Effect According to the joint structure according to the present invention, the joint member absorbs bending stress, temperature stress, or axial stress generated due to uneven subsidence of the ground, temperature change, earthquake, etc. in the axial direction of the pipe body. The coupling member has the function of avoiding or reducing by sliding within a permissible range, and the coupling member is spaced circumferentially at each end of the adjacent tube and extends in the axial direction of the tube. Since the joint member and the storage case are inserted into a storage case buried along the pipe with the only opening facing the pipe end, the joint member and storage case do not act as resistance to the fluid flowing inside the pipe. Moreover, the coupling member is not directly exposed to the fluid flowing in the pipe line. Furthermore, since the joint member is slidably inserted into the storage case only in the axial direction of the tube body, the joint member is The joint part does not move in the radial direction of the tube body, and there is no difference in level at the joint part.
以下、本発明を図示の実施例に基づいて詳細に
説明する。 Hereinafter, the present invention will be explained in detail based on illustrated embodiments.
第１図〜第３図は本発明の一実施例を示すもの
で、図において１は管路を形成する複数の管体で
あつて、管体１はそれぞれ複合管に構成されてい
る。すなわち、管体１はコンクリート管２の外周
面にFRP材、鋼材等を用いた外套管３が形成さ
れている。 FIGS. 1 to 3 show an embodiment of the present invention. In the figures, reference numeral 1 indicates a plurality of tube bodies forming a conduit, and each of the tube bodies 1 is constructed as a composite tube. That is, in the pipe body 1, a jacket pipe 3 made of FRP material, steel material, etc. is formed on the outer peripheral surface of a concrete pipe 2.
上記隣合う管体１のそれぞれの端部には、有底
筒状に形成された収納用ケース４が軸心方向に沿
つて埋設されており、収納用ケース４の長さは後
述する継手部材の長さによつて定められる。 A storage case 4 formed in a cylindrical shape with a bottom is embedded in each end of the adjacent tube bodies 1 along the axial direction, and the length of the storage case 4 is determined by the joint member described later. determined by the length of
上記収納用ケース４内には、第２図および第３
図で拡大して示す板状の継手部材５が管体１の軸
心方向にのみ摺動可能に挿入配置されている。こ
の形状の継手部材５は、とくに部材厚の薄いコン
クリート管２に適用される。 Inside the storage case 4, there are
A plate-shaped joint member 5, which is shown enlarged in the figure, is inserted and arranged so as to be slidable only in the axial direction of the tube body 1. The joint member 5 having this shape is particularly applied to the concrete pipe 2 having a thin member thickness.
しかして、上記収納用ケース４の内壁面と継手
部材５との間〓は、継手部材５の摺動の自由が確
保できる寸法に形成されている。そして上記間隙
には、施工後に固形ゴム、シーリング材等を充填
してゴミ詰まりを防止し、衝撃力を吸収するよう
にしている。 Therefore, the space between the inner wall surface of the storage case 4 and the joint member 5 is formed to a size that allows the joint member 5 to slide freely. After construction, the gap is filled with solid rubber, sealant, etc. to prevent clogging with dirt and absorb impact force.
また、上記継手部材５の中間部には、長手方向
に沿つて延びる長孔６が穿設されており、この長
孔６の長径は管体１の許容引抜き長さによつて定
められる。そして長孔６内には、収納用ケース４
に取付けられたボルト７が貫通配置されており、
該ボルト７によつて継手部材５が収納用ケース４
から引き抜けるのを阻止している。すなわち、ボ
ルト７はストツパとして機能している。さらに隣
接する管体１側の継手部材５の端部は、ボルト８
（又は溶接等）によつて互いに接続されている。 Further, an elongated hole 6 extending in the longitudinal direction is bored in the intermediate portion of the joint member 5, and the long diameter of the elongated hole 6 is determined by the allowable pull-out length of the tubular body 1. Inside the elongated hole 6 is a storage case 4.
A bolt 7 attached to the is arranged to penetrate,
The joint member 5 is attached to the storage case 4 by the bolt 7.
It prevents it from being pulled out. That is, the bolt 7 functions as a stopper. Furthermore, the end of the joint member 5 on the side of the adjacent pipe body 1 is connected to the bolt 8
(or welding, etc.).
一方、隣合う管体１の相互間にはカラー９がガ
スケツト１０を介して周設されており、これらカ
ラー９およびガスケツト１０によつて継手部から
流出する流体が管外へ漏洩しないようにしてい
る。 On the other hand, a collar 9 is provided between adjacent tube bodies 1 via a gasket 10, and these collars 9 and gasket 10 prevent the fluid flowing out from the joint from leaking outside the tube. There is.
上記構成の継手部材５を介して隣合う管体１を
継ぎ合せて形成した管路の継手部構造の作用は次
のとおりである。 The operation of the pipe joint structure formed by joining adjacent pipe bodies 1 via the joint member 5 having the above structure is as follows.
いま、地震などにより管路に対して軸心方向へ
応力が加わつたとすると、管体１相互の継手部に
は引抜き力又は押圧力が作用する。これに伴つて
管体１の継手部材５は、それぞれボルト７によつ
て阻止されるまで長孔６に案内されつつ第１図中
左右方向へ摺動し、上記管体１相互の継手部に作
用する力を回避もしくは減少させると共に、互い
に隣接する管体１から引き抜かれて離反すること
はなく、継手部の止水性は確保される。 Now, if stress is applied to the pipe in the axial direction due to an earthquake or the like, a pulling force or a pressing force will act on the joint between the pipe bodies 1. Along with this, the joint members 5 of the tube bodies 1 slide in the left and right directions in FIG. In addition to avoiding or reducing the applied force, the pipe bodies 1 will not be pulled out and separated from adjacent pipe bodies 1, and the water-tight property of the joint portion will be ensured.
第４図および第５図は本発明の他の実施例を示
すもので、図において１１はソケツトタイプの管
体であつて、該管体１１と隣接する管体１とは互
いに嵌合することによつて継ぎ合せられている。 FIGS. 4 and 5 show other embodiments of the present invention. In the figures, 11 is a socket type tube, and the tube 11 and the adjacent tube 1 are fitted into each other. It is twisted and pieced together.
上記管体１，１１のそれぞれの端部には、有底
筒状に形成された収納用ケース４が軸心方向に沿
つて埋設されており、収納用ケース４の長さは後
述する継手部材の長さによつて定められている。 A storage case 4 formed in a cylindrical shape with a bottom is embedded along the axial direction in each end of the tubes 1 and 11, and the length of the storage case 4 is determined by the joint member described later. determined by the length of
上記収納用ケース４内には、ストツパ部１２を
有する筒状の保持部材１３が第５図で拡大して示
すように嵌入配置されており、保持部材１３は接
着剤などによつて収納用ケース４の内周面に固着
されている。そしてストツパ部１２には、後述す
る継手部材を挿通させる挿通孔１４が形成されて
いる。 A cylindrical holding member 13 having a stopper portion 12 is fitted into the storage case 4 as shown in an enlarged view in FIG. It is fixed to the inner peripheral surface of 4. The stopper portion 12 is formed with an insertion hole 14 through which a joint member, which will be described later, is inserted.
また上記保持部材１３内には、継手部材１５が
管体１，１１の軸心方向にのみ摺動可能に挿入配
置されている。この継手部材１５は、ボルト１６
と、その両端部に配設され、かつストツパ部１２
に係合する頭部１７，１８とから構成され、一方
の頭部１７をねじ込み式にして保持部材１３への
装着が容易に行なえるようになつている。そして
継手部材１５のボルト１６の径は、管体１，１１
の継手部に作用する引抜き力に対して十分耐え得
るように形成され、また頭部１７と１８との間隔
は許容可撓角などによつて定められる。 Further, a joint member 15 is inserted into the holding member 13 so as to be slidable only in the axial direction of the tubes 1 and 11. This joint member 15 has a bolt 16
and stopper portions 12 disposed at both ends thereof.
One of the heads 17 is screwed in so that it can be easily attached to the holding member 13. The diameter of the bolt 16 of the joint member 15 is
The space between the heads 17 and 18 is determined by the allowable deflection angle and the like.
一方、上記保持部材１３および挿通孔１４と継
手部材１５との間隙は、継手部材１５の摺動の自
由が確保できる寸法に形成されている。そして上
記間隙には、施工後に固形ゴム、シーリング材等
を充填してゴミ詰まりを防止し、衝撃力を吸収す
るようにしている。その他の構成および作用は、
上記実施例と同様である。 On the other hand, the gaps between the holding member 13 and the insertion hole 14 and the joint member 15 are formed to a size that allows freedom of sliding of the joint member 15 to be ensured. After construction, the gap is filled with solid rubber, sealant, etc. to prevent clogging with dirt and absorb impact force. Other configurations and effects are as follows:
This is the same as the above embodiment.
なお、本実施例は第６図に示す如く隣合うフラ
ツトタイプの管体１同志を継ぎ合せる場合にも適
用できる。また、図において外套管３およびカラ
ー９は管体１の外周面とカラー９の外周面とが面
一となるように形成されており、そのため本実施
例の継手部材１５は管体１を地中内に順次押込ん
で管路を形成する方法にも利用できる。 This embodiment can also be applied to the case where adjacent flat type tube bodies 1 are joined together as shown in FIG. In addition, in the figure, the mantle tube 3 and the collar 9 are formed so that the outer circumferential surface of the tube body 1 and the outer circumferential surface of the collar 9 are flush with each other. It can also be used to form a conduit by sequentially pushing it into the interior.
以上、本発明の実施例につき述べたが、本発明
は既述の実施例に限定されるものではなく、本発
明の技術的思想に基いて各種の変形および変更が
可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications and changes can be made based on the technical idea of the present invention.
例えば、既述の実施例においては継手部材５，
１５を複合管に適用したが、必ずしも複合管であ
る必要はなく、コンクリート管２のみあるいは
FRP管３のみの管体に用いてもよい。 For example, in the embodiment described above, the joint member 5,
15 was applied to a composite pipe, but it does not necessarily have to be a composite pipe, and it can be applied only to concrete pipe 2 or
It may be used for a pipe body consisting only of the FRP pipe 3.
ｅ 発明の効果
本発明にかかる管路の継手部構造は、該管路に
作用する種々の力を回避もしくは減少させる機能
を果す継手部材を管路内に露出しない状態で装着
したため、該継手部材が管路内を流れる流体を乱
すことはなく、また流体によつて腐食されること
もない。e Effects of the Invention In the pipe joint structure according to the present invention, the joint member that functions to avoid or reduce various forces acting on the pipe line is installed in a state where it is not exposed inside the pipe line. does not disturb the fluid flowing in the pipe, nor is it corroded by the fluid.
また、上記継手部材は、管体の軸心方向にのみ
摺動可能に装着されたものであるため、管路に作
用する力を回避もしくは減少させるにあたつて、
継手部に段差が生じることはなく、継手部に存在
するソケツトあるいはカラーに無理な剪断力を作
用させることはなくなり、また継手部の止水性は
確保される。 In addition, since the above-mentioned joint member is slidably attached only in the axial direction of the pipe body, in order to avoid or reduce the force acting on the pipe line,
There is no step difference in the joint, no unreasonable shearing force is applied to the socket or collar present in the joint, and the watertightness of the joint is ensured.
また、本発明の継手部材は、従来の遠心力成形
によつて生産されるコンクリート管の型枠を変更
することなく装着できるから、経済的に極めて有
利である。しかも、ボツクスカルバートやＵ字フ
リユーム等にも適用できるから、汎用性に優れて
いる。 Furthermore, the joint member of the present invention can be installed without changing the formwork of a concrete pipe produced by conventional centrifugal force forming, so it is extremely advantageous economically. Furthermore, it can be applied to box culverts, U-shaped flumes, etc., so it has excellent versatility.
さらに、本発明の継手部材は、装着するための
特別の施工精度を必要としないとともに、管引込
み時の障害とならず、容易に施工できるから、管
路の施工作業の能率向上が図れる。 Furthermore, the joint member of the present invention does not require special construction precision for installation, does not become an obstacle when drawing in a pipe, and can be easily constructed, thereby improving the efficiency of pipe construction work.
第１図〜第３図は本発明の一実施例を示すもの
であつて、第１図は隣合う管体相互間の継手部構
造を示す縦断面図、第２図は第１図の継手部構想
を拡大して示す横断面図、第３図は第１図の継手
部構造を拡大して示す縦断面図、第４図および第
５図は本発明の他の実施例を示すものであつて、
第４図は隣合う管体相互間の継手部構造を示す縦
断面図、第５図は第１図の継手部材を拡大して示
す縦断面図、第６図は上記実施例の変形例を示す
縦断面図である。
１，１１……管体、４……収納用ケース、５，
１５……継手部材、７……ボルト、１２……スト
ツパ部。
1 to 3 show one embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view showing the joint structure between adjacent pipe bodies, and FIG. 2 is a cross-sectional view of the joint shown in FIG. 1. FIG. 3 is an enlarged cross-sectional view showing the joint structure of FIG. 1, and FIGS. 4 and 5 show other embodiments of the present invention. It's hot,
FIG. 4 is a longitudinal sectional view showing the joint structure between adjacent pipe bodies, FIG. 5 is an enlarged longitudinal sectional view showing the joint member in FIG. 1, and FIG. 6 is a modification of the above embodiment. FIG. 1, 11...Pipe body, 4...Storage case, 5,
15...Joint member, 7...Bolt, 12...Stopper part.
Claims (1)
部構造において、上記隣合う管体のそれぞれの端
部に円周方向に間隔を置いて複数の収納用ケース
を該管体の軸心方向に沿つて、かつ唯一の開口を
管端部に向けて埋設し、該埋設した収納用ケース
に管体の軸心方向にのみ摺動可能な継手部材を挿
入配置するとともに、前記収納用ケースに前記継
手部材を所定の摺動範囲に規制するストツパを設
け、前記継手部材を介して前記隣合う管体を継ぎ
合せたことを特徴とする管路の継手部構造。1. In a joint structure for a pipe line formed by joining a plurality of pipe bodies, a plurality of storage cases are placed at each end of the adjacent pipe bodies at intervals in the circumferential direction, so that the storage cases are aligned with the axis of the pipe bodies. a joint member that is slidable only in the axial direction of the tube is inserted into the buried storage case, and the storage case is 1. A joint structure for a conduit, characterized in that a stopper is provided for regulating the joint member within a predetermined sliding range, and the adjacent pipe bodies are joined via the joint member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2995886A JPS62188885A (en) | 1986-02-14 | 1986-02-14 | Joint section structure of duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2995886A JPS62188885A (en) | 1986-02-14 | 1986-02-14 | Joint section structure of duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62188885A JPS62188885A (en) | 1987-08-18 |
| JPH0355714B2 true JPH0355714B2 (en) | 1991-08-26 |
Family
ID=12290487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2995886A Granted JPS62188885A (en) | 1986-02-14 | 1986-02-14 | Joint section structure of duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62188885A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015233U (en) * | 1973-06-08 | 1975-02-18 | ||
| JPS5548955U (en) * | 1978-09-28 | 1980-03-31 |
-
1986
- 1986-02-14 JP JP2995886A patent/JPS62188885A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015233U (en) * | 1973-06-08 | 1975-02-18 | ||
| JPS5548955U (en) * | 1978-09-28 | 1980-03-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62188885A (en) | 1987-08-18 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |