JPH0613887Y2 - Drainage basin connection member - Google Patents
Drainage basin connection memberInfo
- Publication number
- JPH0613887Y2 JPH0613887Y2 JP1988158009U JP15800988U JPH0613887Y2 JP H0613887 Y2 JPH0613887 Y2 JP H0613887Y2 JP 1988158009 U JP1988158009 U JP 1988158009U JP 15800988 U JP15800988 U JP 15800988U JP H0613887 Y2 JPH0613887 Y2 JP H0613887Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening surface
- axis
- ring
- respect
- lower member
- 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
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- Sewage (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、排水桝を構成するインバートや増結リング等
の桝部材間に設けられる接続部材に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a connecting member provided between column members such as an invert and a multiplying ring that constitute a drainage column.
（従来の技術） 一般に排水桝は、インバートの上部に増結リングが設け
られ、該増結リングの上に蓋を被せて構成されている。
尚、前記インバートは、底に水勾配が設けられているた
め、通常は、その水勾配を確保するためほぼ垂直状態で
地中に埋設される。(Prior Art) Generally, a drainage basin is configured by providing an increasing ring on an upper portion of an invert and covering the increasing ring with a lid.
Since the invert has a water gradient at the bottom, it is usually buried in the ground in a substantially vertical state to secure the water gradient.
ところが、地面が傾斜している場所に上述した排水桝を
垂直に埋設すると、蓋が地面に対して斜めになり、蓋が
地面から張り出すか、蓋の上面に凹みが設けられること
になるため、体裁が悪いと共に、人がつまずく恐れもあ
った。However, if the above-mentioned drainage basin is buried vertically in a place where the ground is inclined, the lid will be inclined with respect to the ground, and the lid will overhang from the ground, or a recess will be provided on the top surface of the lid. Not only was the appearance bad, but there was the fear that people would stumble.
このような問題を解決するための接続部材として、上開
口面と下開口面とが傾斜角度を有するように形成された
筒状体が知られている（実開昭６１−２３３７６号公報
参照）。As a connecting member for solving such a problem, a cylindrical body is known in which an upper opening surface and a lower opening surface are formed to have an inclination angle (see Japanese Utility Model Laid-Open No. 61-23376). .
この接続部材は、インバートと増結リングとの間に設け
られ、インバートに対して増結リングと蓋とを接続部材
の傾斜角度だけ傾かせるものであった。The connecting member is provided between the invert and the expansion ring, and the expansion ring and the lid are inclined with respect to the invert by the inclination angle of the connection member.
従って、傾斜した地面に排水桝を埋設する場合には、上
開口面と下開口面の傾斜角度が前記傾斜面の傾斜角度と
等しい接続部材を用い、この接続部材をインバートと蓋
の間に設ける。そうすると、上開口面と下開口面の傾斜
角度だけインバートの上開口面に対して蓋が傾斜する。
即ち、インバートを垂直状態にして水勾配を確保し、か
つ、蓋が地面に対して平行になるよう埋設することがで
きる。Therefore, when burying a drainage basin on an inclined ground, a connecting member having an inclination angle between the upper opening surface and the lower opening surface equal to the inclination angle of the inclined surface is used, and the connecting member is provided between the invert and the lid. . Then, the lid is inclined with respect to the upper opening surface of the invert by the inclination angle between the upper opening surface and the lower opening surface.
That is, the invert can be set in a vertical state to secure a water gradient, and the lid can be embedded so as to be parallel to the ground.
（考案が解決しようとする課題） しかしながら、このような従来の接続部材にあっては、
上開口面と下開口面の傾斜角度が一定に決まっており、
その傾斜角度でしか蓋を傾かせることができない為に、
地面の傾斜角度が接続部材の傾斜角度と異なる場合に
は、蓋が地面に対して斜めになり上記問題は解決されな
いことになる。(Problems to be solved by the invention) However, in such a conventional connecting member,
The angle of inclination between the upper and lower openings is fixed,
Since the lid can only be tilted at that tilt angle,
When the inclination angle of the ground is different from the inclination angle of the connecting member, the lid is inclined with respect to the ground, and the above problem cannot be solved.
従って、地面の傾斜角度について様々な場合を想定し、
上開口面と下開口面の傾斜角度が異なる複数種類の接続
部材を用意しておかなければならず、成形に伴う金型へ
の投資が多額になってコスト的に不利になるという問題
が生じる。Therefore, assuming various cases of the inclination angle of the ground,
It is necessary to prepare a plurality of types of connecting members in which the upper opening surface and the lower opening surface have different inclination angles, which causes a problem that the investment in the mold for molding becomes large and the cost becomes disadvantageous. .
本考案は、地面の傾斜角度が異なる場合にも適用できる
排水桝の接続部材を提供することを目的としている。An object of the present invention is to provide a drainage basin connecting member that can be applied even when the inclination angle of the ground is different.
（課題を解決するための手段） 上記目的を達成するために、本考案の排水桝の接続部材
は、円筒状に形成された上部材と下部材とを備え、前記
上部材は、下開口面が軸心に対して斜めに形成され、前
記下部材は、上開口面が下部材の軸心に対して斜めに形
成され、前記上部材と下部材とが、上部材の下開口面と
下部材の上開口面とが互いに当接あるいは近接した状態
で回動可能に連結されているものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the connection member of the drainage basin of the present invention comprises a cylindrical upper member and a lower member, and the upper member has a lower opening surface. Is formed obliquely with respect to the axis, and the lower member has an upper opening surface formed obliquely with respect to the axis of the lower member, and the upper member and the lower member have a lower opening surface and a lower member. The upper opening surfaces of the members are rotatably connected to each other in a state of being in contact with or close to each other.
（作用） 本考案の接続部材は、上部材の下開口面と下部材の上開
口面が、軸心に対して斜めに形成されており、上部材と
下部材とは、上部材の下開口面と下部材の上開口面とが
互いに当接あるいは近接した状態で連結されているの
で、上部材の軸心を下部材の軸心に対して傾斜させるこ
とができる。(Operation) In the connecting member of the present invention, the lower opening surface of the upper member and the upper opening surface of the lower member are formed obliquely with respect to the axis, and the upper member and the lower member are the lower opening of the upper member. Since the surface and the upper opening surface of the lower member are connected to each other in a state of being in contact with or close to each other, the axis of the upper member can be inclined with respect to the axis of the lower member.
また上部材あるいは下部材を回動させて、上部材と下部
材の向きを相対的に変位させることにより、上部材の軸
心と下部材の軸心の傾斜角度を調整することもできる。Further, the inclination angle between the axis of the upper member and the axis of the lower member can be adjusted by rotating the upper member or the lower member to relatively displace the orientations of the upper member and the lower member.
従って、本考案の接続部材を、排水桝の桝部材間に設け
ることにより、接続部材の下側に設けられる下側桝部材
に対して、上側に設けられる上側桝部材を傾斜させるこ
とができ、しかも地面の傾斜角度に応じて、両桝部材の
傾斜角度を調整することもできる。Therefore, by providing the connecting member of the present invention between the drainage basin members, it is possible to incline the upper tub member provided on the upper side with respect to the lower tub member provided on the lower side of the connecting member. Moreover, it is possible to adjust the inclination angle of both stub members according to the inclination angle of the ground.
（実施例） 以下、本考案の実施例を図面に基づいて詳述する。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
まず、構成を説明する。First, the configuration will be described.
第１図は、本実施例の接続部材Ａの分解状態を示してい
る。最初に、この図に基づいて接続部材Ａを構成する各
構成要素について順に説明する。FIG. 1 shows a disassembled state of the connecting member A of this embodiment. First, based on this figure, each constituent element of the connecting member A will be described in order.
本実施例の接続部材Ａは、円筒状に形成された上部材１
及び下部材２と、連結リング３と、Ｏリング４とで構成
されている。The connecting member A of this embodiment is an upper member 1 formed in a cylindrical shape.
And a lower member 2, a connecting ring 3, and an O-ring 4.
前記上部材１は、下開口面１１が軸心１ａに対して傾斜
して形成されていると共に、上開口面１２が軸心１ａに
対して直角に形成されており、前記下開口面１１には、
Ｏリング４を装着するための溝１１１が周設されてい
る。In the upper member 1, the lower opening surface 11 is formed to be inclined with respect to the axis 1a, and the upper opening surface 12 is formed at a right angle to the axis 1a. Is
A groove 111 for mounting the O-ring 4 is provided around the groove 111.
また、この上部材１の上端には、環状の受溝１３が形成
され、下端には、フランジ１４が外向きに形成されてお
り、更にこのフランジ１４の外周面には、雄ネジ１４１
が形成されている。An annular receiving groove 13 is formed at the upper end of the upper member 1, and a flange 14 is formed outward at the lower end thereof. Further, a male screw 141 is formed on the outer peripheral surface of the flange 14.
Are formed.
前記下部材２は、上開口面２１が軸心２ａに対して傾斜
して形成されていると共に、下開口面２２が軸心２ａに
対して直角に形成されており、前記上開口面２１には、
Ｏリング４を装着するための溝２１１が周設されてい
る。In the lower member 2, the upper opening surface 21 is formed to be inclined with respect to the axis 2a, and the lower opening surface 22 is formed at a right angle to the axis 2a. Is
A groove 211 for mounting the O-ring 4 is circumferentially provided.
そして、この下部材２の上端には、フランジ２３が外向
きに形成されている。A flange 23 is formed outward at the upper end of the lower member 2.
尚、下部材１のフランジ１４と上部材２のフランジ２３
とは、内径がほぼ等しくなるよう形成されている。The flange 14 of the lower member 1 and the flange 23 of the upper member 2
And are formed such that their inner diameters are substantially equal.
また、下開口面１１の軸心１ａに対する傾斜角度と、上
開口面２１の軸心２ａに対する傾斜角度とはほぼ等しく
形成されている。尚、第１図〜第３図において、１ｂは
下開口面１１に対する直交軸、２ｂは上開口面２１に対
する直交軸を示しており、また、θは前記直交軸１ｂ，
２ｂと軸心１ａ，２ａとの傾斜角度を示している。傾斜
角度θは１０度以下、好ましくは５度以下であれば良
い。Further, the inclination angle of the lower opening surface 11 with respect to the axis 1a and the inclination angle of the upper opening surface 21 with respect to the axis 2a are formed to be substantially equal. 1 to 3, 1b represents an orthogonal axis with respect to the lower opening surface 11, 2b represents an orthogonal axis with respect to the upper opening surface 21, and θ represents the orthogonal axis 1b,
2b shows the tilt angle between the shaft centers 1a and 2a. The inclination angle θ may be 10 degrees or less, preferably 5 degrees or less.
前記連結リング３は、円筒状の側壁３１と、該側壁３１
の下端から内向きに形成されたフランジ３２とで断面略
Ｌ字形に形成されており、前記側壁３１の上部内周面に
は、前記上部材１の雄ネジ１４１と螺合可能な雌ネジ３
１１が形成されている。また、この連結リング３のフラ
ンジ３２は、内径が前記上部材１のフランジ１４の外径
よりも小さくなるよう形成されている。The connecting ring 3 includes a cylindrical side wall 31 and the side wall 31.
And a flange 32 formed inwardly from the lower end of the side wall 31 are formed in a substantially L-shape, and the side wall 31 has a female screw 3 that can be screwed into the male screw 141 of the upper member 1 on the inner peripheral surface of the upper portion.
11 is formed. The inner diameter of the flange 32 of the connecting ring 3 is smaller than the outer diameter of the flange 14 of the upper member 1.
従って、上部材１と下部材２とを連結する際には、ま
ず、下部材２を連結リング３の内側に差し込む。次に、
連結リング３を下部材２のフランジ２３の位置まで持ち
上げ、連結リング３の内側に上部材１を差し込んで螺合
する。この時、上部材１の下開口面１１と下部材２の上
開口面２１との間にＯリング４を介在させるため、前記
下開口面１１の溝１１１、あるいは前記上開口面２１の
溝２１１に予めＯリング４を装着しておく。このよう
に、連結リング３に上部材１を螺合すると、下部材２の
フランジ２３が、連結リング３のフランジ３２と上部材
１のフランジ１４とに挾着されて両部材１，２が連結さ
れることになるが、上部材１の螺合は、下部材２の回動
を妨げない程度にすればよい。Therefore, when connecting the upper member 1 and the lower member 2, first, the lower member 2 is inserted into the inside of the connecting ring 3. next,
The connecting ring 3 is lifted to the position of the flange 23 of the lower member 2, and the upper member 1 is inserted inside the connecting ring 3 and screwed. At this time, since the O-ring 4 is interposed between the lower opening surface 11 of the upper member 1 and the upper opening surface 21 of the lower member 2, the groove 111 of the lower opening surface 11 or the groove 211 of the upper opening surface 21. Install the O-ring 4 in advance. In this way, when the upper member 1 is screwed onto the connecting ring 3, the flange 23 of the lower member 2 is sandwiched between the flange 32 of the connecting ring 3 and the flange 14 of the upper member 1 to connect the two members 1, 2. As described above, the screwing of the upper member 1 may be performed to the extent that it does not hinder the rotation of the lower member 2.
また、下部材２を回動可能にするために、上部材１の下
開口面１１と下部材２の上開口面２１との密着性が損な
われたとしても、両開口面１１，２１間にはＯリング４
が設けられていることでシール性が確保されている。更
に、上部材１と連結リング３間には雄ネジ１４１と雌ネ
ジ３１１の螺合部分が設けられているので、その螺合部
分においても水の浸入を阻止できる。Further, even if the adhesion between the lower opening surface 11 of the upper member 1 and the upper opening surface 21 of the lower member 2 is impaired in order to make the lower member 2 rotatable, a gap between the opening surfaces 11 and 21 may be lost. Is an O-ring 4
The sealability is ensured by the provision of. Furthermore, since the male screw 141 and the female screw 311 are provided between the upper member 1 and the connecting ring 3, the intrusion of water can be prevented even in the screwed portion.
第２図及び第３図は、上述のようして連結された接続部
材Ａを示している。2 and 3 show the connecting member A connected as described above.
接続部材Ａは、下部材２が上部材１に対して回動可能で
あることにより、上部材１の軸心１ａを下部材２の軸心
２ａに対して傾斜させることができ、また下部材２を回
動させて、上部材１と下部材２の向きを相対的に変位さ
せることにより、上部材１の軸心１ａと下部材２の軸心
２ａの傾斜角度を調整することもできる。In the connecting member A, since the lower member 2 is rotatable with respect to the upper member 1, the axis 1a of the upper member 1 can be inclined with respect to the axis 2a of the lower member 2, and the lower member By rotating 2 to relatively displace the orientations of the upper member 1 and the lower member 2, the inclination angles of the shaft center 1a of the upper member 1 and the shaft center 2a of the lower member 2 can be adjusted.
尚、第２図は、上部材１の軸心１ａと下部材２の軸心２
ａを同一軸にした状態である。また第３図は、第２図の
状態から下部材２を１８０度回動させた最大曲げ状態で
ある。2 shows the shaft center 1a of the upper member 1 and the shaft center 2 of the lower member 2.
It is a state where a is on the same axis. Further, FIG. 3 shows the maximum bending state in which the lower member 2 is rotated 180 degrees from the state shown in FIG.
次に、この接続部材Ａの使用状態について説明する。Next, a usage state of the connecting member A will be described.
本考案の接続部材Ａは、排水桝を構成する桝部材間に設
けられる。例えば、インバートと増結リングとの間や、
増結リングと蓋との間で、増結リングが複数設けられて
いる場合には、増結リング間等にも設けることができ
る。The connecting member A of the present invention is provided between the drain members constituting the drainage drain. For example, between the invert and the hematopoietic ring,
When a plurality of expansion rings are provided between the expansion rings and the lid, they can be provided between the expansion rings and the like.
第４図は、排水桝のインバートＢと増結リングＣとの間
に本実施例の接続部材Ａを設け、排水桝の蓋Ｄが地面Ｇ
と平行になるよう接続部材Ａを角度調整した状態を示し
ている。In FIG. 4, the connection member A of this embodiment is provided between the inversion B of the drainage basin and the expansion ring C, and the lid D of the drainage basin is the ground G.
It shows a state in which the angle of the connecting member A is adjusted so as to be parallel to.
即ち、接続部材Ａは、下部材２の下端部がインバートＢ
の上端に形成されている受溝に差し込まれ、上部材１の
上端に形成された受溝１３に増結リングＣの下端部が差
し込まれている。そして、接続部材Ａは、上部材１の軸
心１ａと下部材２の軸心２ａの傾斜角度が、地面Ｇの傾
斜角度と一致するよう設定されている。そうすることに
より、接続部材Ａの上側に設けられている増結リングＣ
と蓋Ｄは、増結リングＣの下側に設けられているインバ
ートＢに対して傾き、蓋Ｄは地面Ｇに対して平行にな
る。That is, in the connecting member A, the lower end portion of the lower member 2 has an invert B.
Is inserted in the receiving groove formed in the upper end of the upper member 1, and the lower end of the additional ring C is inserted in the receiving groove 13 formed in the upper end of the upper member 1. The connecting member A is set so that the inclination angle of the axis 1a of the upper member 1 and the axis 2a of the lower member 2 matches the inclination angle of the ground G. By doing so, the expansion ring C provided on the upper side of the connection member A
And the lid D are tilted with respect to the invert B provided below the expansion ring C, and the lid D is parallel to the ground G.
このように、本実施例の接続部材Ａを用いることによっ
て排水桝は、インバートＢを垂直に埋設して水勾配を確
保できると共に、蓋Ｄを地面Ｇと平行に設けて体裁良く
することができる。As described above, by using the connecting member A of this embodiment, the drainage basin can vertically bury the invert B to secure a water gradient, and the lid D can be provided in parallel with the ground G to improve the appearance. .
以上、本考案の実施例を図面により詳述してきたが、具
体的な構成はこの実施例に限られるものではなく本考案
の要旨を逸脱しない範囲の設計変更等があっても本考案
に含まれる。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and even if there is a design change or the like within the scope not departing from the gist of the present invention, it is included in the present invention. Be done.
例えば、実施例では、上部材と下部材とを連結リングを
介して連結したが、回動可能であれば嵌合等により直接
連結してもよい。即ち、連結リングが下部材と一体にな
された構造のものであってもよい。For example, in the embodiment, the upper member and the lower member are connected to each other via the connecting ring, but if they are rotatable, they may be directly connected by fitting or the like. That is, the connecting ring may be integrated with the lower member.
（考案の効果） 以上説明してきたように、本考案の接続部材は、排水桝
の桝部材間に設けることにより、下側桝部材に対して上
側桝部材を傾斜させることができるだけでなく、地面の
傾斜角度に応じて両桝部材の傾斜角度を調整することが
できるので、１つの接続部材を地面の傾斜角度が異なる
場合に適用できる。(Effects of the Invention) As described above, the connection member of the present invention is provided between the drainage basin members so that not only the upper basin member can be inclined with respect to the lower basin member but also the ground surface. Since it is possible to adjust the inclination angles of the two bridge members according to the inclination angle of, the single connecting member can be applied when the inclination angles of the ground are different.
第１図は本考案実施例の接続部材の分解状態を示す斜視
図、第２図及び第３図は前記接続部材の結合状態を示す
斜視図、第４図は前記接続部材が設けられた排水桝の使
用状態を示す側面図である。 Ａ……接続部材 １……上部材 １ａ……軸心 １１……下開口面 ２……下部材 ２ａ……軸心 ２１……上開口面 Ｂ……インバート Ｃ……増結リング Ｄ……蓋FIG. 1 is a perspective view showing a disassembled state of a connecting member according to an embodiment of the present invention, FIGS. 2 and 3 are perspective views showing a connected state of the connecting member, and FIG. 4 is drainage provided with the connecting member. It is a side view which shows the use condition of a grid. A: Connection member 1 ... Upper member 1a ... Shaft center 11 ... Lower opening surface 2 ... Lower member 2a ... Shaft center 21 ... Upper opening surface B ... Invert C ... Heterogeneous ring D ... Lid
Claims (1)
え、前記上部材は、下開口面が上部材の軸心に対して斜
めに形成され、前記下部材は、上開口面が下部材の軸心
に対して斜めに形成され、前記上部材と下部材とが、上
部材の下開口面と下部材の上開口面とが互いに当接ある
いは近接した状態で回動可能に連結されていることを特
徴とする排水桝の接続部材。1. A cylindrical upper member and a lower member, the upper member having a lower opening surface formed obliquely with respect to the axis of the upper member, and the lower member having an upper opening surface. Is formed obliquely with respect to the axis of the lower member, and the upper member and the lower member are rotatable with the lower opening surface of the upper member and the upper opening surface of the lower member abutting or close to each other. A drainage basin connecting member characterized by being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988158009U JPH0613887Y2 (en) | 1988-12-02 | 1988-12-02 | Drainage basin connection member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988158009U JPH0613887Y2 (en) | 1988-12-02 | 1988-12-02 | Drainage basin connection member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0278684U JPH0278684U (en) | 1990-06-18 |
| JPH0613887Y2 true JPH0613887Y2 (en) | 1994-04-13 |
Family
ID=31437954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988158009U Expired - Lifetime JPH0613887Y2 (en) | 1988-12-02 | 1988-12-02 | Drainage basin connection member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613887Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0439345Y2 (en) * | 1989-06-06 | 1992-09-14 | ||
| JPH086148Y2 (en) * | 1992-10-08 | 1996-02-21 | 神戸樹脂工業株式会社 | Pipe fitting with cleaning port and installation jig |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56105022A (en) * | 1980-01-21 | 1981-08-21 | Sugiaki Kusatake | Regulating frame for tilt |
| JPS5918125A (en) * | 1982-07-21 | 1984-01-30 | Nippon Telegr & Teleph Corp <Ntt> | Manufacture of single-polarization single-mode optical fiber |
| JPS59139374A (en) * | 1983-01-28 | 1984-08-10 | Sanyo Chem Ind Ltd | Preparation of substituted furfurylcarboxylic acid ester |
| JPS59192134A (en) * | 1983-04-14 | 1984-10-31 | Yamagami Koatsu Concrete Kk | Regulation of inclined angle of steel cover for manhole |
| JPS6158248B2 (en) * | 1977-12-19 | 1986-12-10 | Hitachi Seisakusho Kk |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130893U (en) * | 1984-02-09 | 1985-09-02 | 株式会社 タルコン | Variable slope sewage basin |
| JPS6158248U (en) * | 1984-09-17 | 1986-04-19 |
-
1988
- 1988-12-02 JP JP1988158009U patent/JPH0613887Y2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158248B2 (en) * | 1977-12-19 | 1986-12-10 | Hitachi Seisakusho Kk | |
| JPS56105022A (en) * | 1980-01-21 | 1981-08-21 | Sugiaki Kusatake | Regulating frame for tilt |
| JPS5918125A (en) * | 1982-07-21 | 1984-01-30 | Nippon Telegr & Teleph Corp <Ntt> | Manufacture of single-polarization single-mode optical fiber |
| JPS59139374A (en) * | 1983-01-28 | 1984-08-10 | Sanyo Chem Ind Ltd | Preparation of substituted furfurylcarboxylic acid ester |
| JPS59192134A (en) * | 1983-04-14 | 1984-10-31 | Yamagami Koatsu Concrete Kk | Regulation of inclined angle of steel cover for manhole |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0278684U (en) | 1990-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |