JPH0814453A - Joint for pipe - Google Patents
Joint for pipeInfo
- Publication number
- JPH0814453A JPH0814453A JP17032894A JP17032894A JPH0814453A JP H0814453 A JPH0814453 A JP H0814453A JP 17032894 A JP17032894 A JP 17032894A JP 17032894 A JP17032894 A JP 17032894A JP H0814453 A JPH0814453 A JP H0814453A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lock ring
- ring
- peripheral surface
- joint
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、管用継ぎ手に関し、さ
らに詳細に言えば、水道の配管の接続等に使用して便利
な、離脱阻止力の大きな管用継ぎ手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint, and more particularly to a pipe joint having a large disengagement prevention force, which is convenient for use in connecting water pipes and the like.
【０００２】[0002]
【従来の技術】従来から水道の配管を接続するための継
ぎ手として、各種のものが使用されている。そして、特
に曲がり管部、Ｔ字管部等に使用する継ぎ手には、繋い
だ管が水圧の影響で離脱するのを阻止する機能が要求さ
れる。2. Description of the Related Art Conventionally, various types of joints have been used for connecting water pipes. In particular, joints used for bent pipes, T-shaped pipes, and the like are required to have a function of preventing the connected pipes from being separated due to the influence of water pressure.
【０００３】この様な離脱阻止機能を備えた継ぎ手の一
例として、従来図５に示すようなものがある。この継ぎ
手は、被接続管１の一端を受け入れる孔３を備えた継ぎ
手本体２の、その受入れ端部の内周に、内径を拡大して
凹所４を形成する。この凹所４にゴム等で形成されたシ
ールリング５が配置される。そしてこのシールリング５
の背部を、ボルト、ナットで継ぎ手本体に結合される押
し輪６の前面で押し、シールリング５を凹所４内で圧縮
し、シールする。離脱阻止をするために、本体２の受入
れ孔３の内周に周方向に伸びる溝を形成し、被接続管１
の挿入端部近くの外周にも周方向に伸びる溝を形成す
る。本体１の溝に周方向一か所で割られたロックリング
７をはめ込んでおく。そして被接続管を挿入し、前述の
シール作業が終わった後に、継ぎ手本体２に径方向に形
成されたネジ孔にセットボルト８をねじ込んで、その先
端でロックリング７を押さえ、そのロックリング７の内
周側を被接続管の溝に嵌め込み固定するものである。As an example of a joint having such a disengagement prevention function, there is a conventional joint as shown in FIG. This joint has a recess 4 formed by enlarging the inner diameter of the joint body 2 having a hole 3 for receiving one end of the pipe 1 to be connected, on the inner circumference of the receiving end. A seal ring 5 made of rubber or the like is arranged in the recess 4. And this seal ring 5
The back part of is pressed by the front surface of the push ring 6 connected to the joint body with bolts and nuts, and the seal ring 5 is compressed in the recess 4 to seal. In order to prevent disengagement, a groove extending in the circumferential direction is formed on the inner periphery of the receiving hole 3 of the main body 2, and the connected pipe 1
A groove extending in the circumferential direction is also formed on the outer circumference near the insertion end of the. The lock ring 7, which is split at one place in the circumferential direction, is fitted into the groove of the main body 1. Then, after inserting the pipe to be connected and finishing the above-mentioned sealing work, the set bolt 8 is screwed into the screw hole formed in the joint body 2 in the radial direction, and the lock ring 7 is pressed by the tip thereof, and the lock ring 7 The inner peripheral side of the is fitted and fixed in the groove of the pipe to be connected.
【０００４】上記従来の継ぎ手は、本体と被接続管にロ
ックリング７を受け入れるための溝をわざわざ設けなけ
ればならない。また、管を接続してシールする作業と、
離脱阻止を行うための作業が別々に行われ、作業に長時
間を要する。In the above conventional joint, a groove for receiving the lock ring 7 must be purposely provided in the main body and the pipe to be connected. Also, the work of connecting and sealing the pipe,
Work to prevent separation is performed separately, and the work takes a long time.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたものであり、被接続管に溝を形成する必要
がなく、管の接続と、離脱阻止とを一回の作業で行うこ
との出来る、管用継ぎ手を提供するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is not necessary to form a groove in a pipe to be connected, and the pipe connection and disconnection prevention can be performed in one operation. It is intended to provide a pipe joint that can be used.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明に係る管用継ぎ手においては、シール部材の背
部に配置され、シール部材の後端面に当接する前面部
と、内周面に形成された内方へ突出する先端が尖った爪
を備え、円周方向で所定の隙間をもって割られたロック
リングを設ける。このロックリングの外周面は前面部か
ら後端部へ次第に径が小さくなるテーパ状をしている。
さらに、ロックリングの背部に配置され、外方へ拡がる
フランジを備え、前面側内周面が、ロックリングの外周
面のテーパに対応したテーパ状になっている押し輪を設
け、本体のフランジと押し輪のフランジとを締結装置で
締結する。ロックリングの爪先端での内径は、該ロック
リングが自由なときには被接続管の外形より大きく、少
なくとも隙間が無くなるように縮径されたときには被接
続管の外形より小さくなる。In order to solve the above-mentioned problems, in a pipe joint according to the present invention, it is formed on the inner peripheral surface and the front surface portion which is arranged at the back portion of the sealing member and abuts on the rear end surface of the sealing member. The lock ring is provided with a claw having a pointed tip protruding inwardly and divided at a predetermined gap in the circumferential direction. The outer peripheral surface of this lock ring is tapered so that the diameter gradually decreases from the front surface portion to the rear end portion.
Furthermore, a push ring is provided that is arranged at the back of the lock ring and expands outward, and a front side inner peripheral surface is provided with a push ring that corresponds to the taper of the outer peripheral surface of the lock ring. The flange of the push ring is fastened with a fastening device. The inner diameter of the lock ring at the tip of the claw is larger than the outer shape of the connected tube when the lock ring is free, and is smaller than the outer shape of the connected tube at least when the diameter is reduced so that there is no gap.
【０００７】[0007]
【実施例】以下、図面に基づき本発明の具体的実施例を
説明する。しかしながら、本発明の範囲は、以下に説明
される実施例の具体的構成に限定されるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. However, the scope of the present invention is not limited to the specific configurations of the embodiments described below.
【０００８】図１は、本発明の一実施例に係る管用継ぎ
手２０の上側半分の縦断面図である。図において、２１
は継ぎ手本体であり、内部に被接続管３２の一端部を収
受する孔２３が明いている。なお本実施例では、継ぎ手
本体２１は被接続管３２が接続されるもう一方の管３３
の端部に一体に形成されている。FIG. 1 is a vertical sectional view of an upper half of a pipe joint 20 according to an embodiment of the present invention. In the figure, 21
Is a joint body, and a hole 23 for receiving one end of the pipe 32 to be connected is formed therein. In the present embodiment, the joint body 21 includes the other pipe 33 to which the connected pipe 32 is connected.
Is integrally formed at the end of the.
【０００９】孔２３の被接続管３２を受け入れる側の端
部の内周には、その内径を拡げることにより後述のシー
ルリングを収受するための凹所２５が形成されている。
この凹所２５は、図示のように端部から内方に向かうに
連れて次第に径が小さくなる傾斜部２７と、傾斜部２７
の内方に形成される同一径部分である直線部２９とから
なっている。そして本体２１は、被接続管を受け入れる
端部に外方に伸びるフランジ３０を備え、このフランジ
３０には周方向に間隔をあけて複数のボルト孔３１が明
いている。A recess 25 is formed in the inner periphery of the end of the hole 23 on the side for receiving the pipe 32 to be connected to accommodate a seal ring, which will be described later, by enlarging the inner diameter.
The recess 25 has an inclined portion 27 whose diameter gradually decreases from the end toward the inside as shown in the drawing, and an inclined portion 27.
And a straight portion 29 having the same diameter formed inside. The main body 21 is provided with a flange 30 extending outward at an end portion for receiving the pipe to be connected, and a plurality of bolt holes 31 are formed in the flange 30 at intervals in the circumferential direction.
【００１０】３５は、本体２１の凹所２５に収受される
弾性材料製のシールリングで、本実施例ではゴムで作ら
れている。その断面形状は、凹所２５の形状に対応し
て、傾斜部３７と直線部３９とを備えている。そして傾
斜部３７の後端面４１は、図示のように傾斜して、外周
に向かうに従い、直線部３９の先端からの距離が短くな
っている。Reference numeral 35 denotes a seal ring made of an elastic material, which is received in the recess 25 of the main body 21, and is made of rubber in this embodiment. The cross-sectional shape includes an inclined portion 37 and a linear portion 39 corresponding to the shape of the recess 25. The rear end surface 41 of the slanted portion 37 is slanted as shown in the drawing, and the distance from the tip of the straight portion 39 is reduced toward the outer circumference.
【００１１】４３はシールリング３５の背後に配置され
るロックリングで、図２のその平面図から明らかなよう
に、周方向で一か所、所定の長さの切り欠き４４が形成
された割りリングとなっている。図３は図２の３−３線
による断面図で、ロックリング４３のシールリング３５
に接する前面部４５は、シールリング３５の後端面４１
に対応した傾斜面となっており、その外周は、前端面に
向かうに連れて径が大きくなるようにテーパ面になって
いる。なお、シールリング３５の後端面４１と、ロック
リング４３の前端面４５は必ずしも径斜面にする必要は
なく、平らな面でもよい。Reference numeral 43 denotes a lock ring disposed behind the seal ring 35, and as is apparent from the plan view of FIG. 2, a split ring 44 having a notch 44 having a predetermined length is formed at one position in the circumferential direction. It is a ring. FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, showing the seal ring 35 of the lock ring 43.
The front surface portion 45 contacting with the rear end surface 41 of the seal ring 35 is
The sloped surface corresponds to the above, and the outer circumference thereof is tapered so that the diameter increases toward the front end surface. The rear end surface 41 of the seal ring 35 and the front end surface 45 of the lock ring 43 do not necessarily have to be radial slopes, and may be flat surfaces.
【００１２】ロックリング４３の内周面には、周方向に
伸びる２条の爪部４９、５２が形成されている。この２
条の爪部４９、５２は断面同一形状に形成され、内周先
端が尖り、その前面５０、５３はロックリング４３の径
方向に平らに伸びる水平面であり、背面５１、５４は傾
斜面となっている。しかし、爪部４９、５２の断面形状
は必ずしもこの形状に限定されず、前面と背面がともに
傾斜して先端が尖った形であってもよい。また本実施例
では、爪部４９、５２は周方向全体に連続したものにな
っているが、周方向で短く分割された形であってもよ
い。また本実施例では爪４９、５１を２条設けたが、こ
の数は必要に応じ変更してよい。On the inner peripheral surface of the lock ring 43, two claws 49 and 52 extending in the circumferential direction are formed. This 2
The strip claws 49, 52 are formed in the same shape in cross section, the inner peripheral tips are sharp, the front faces 50, 53 are horizontal planes extending flat in the radial direction of the lock ring 43, and the back faces 51, 54 are inclined faces. ing. However, the cross-sectional shape of the claws 49, 52 is not necessarily limited to this shape, and both the front surface and the back surface may be inclined and the tips may be pointed. In addition, in the present embodiment, the claw portions 49 and 52 are continuous in the entire circumferential direction, but may be divided into short pieces in the circumferential direction. Further, in this embodiment, two claws 49 and 51 are provided, but this number may be changed as necessary.
【００１３】再び図１に戻り説明すると、符号５５はロ
ックリング４３の背後に配置される押し輪である。この
押し輪５５の前面側の内周面５７は、ロックリング４３
の外周面４７のテーパと同じ角度のテーパ面になってい
る。また、押し輪５５は外方に拡がるフランジ５９を備
え、このフランジ５９には本体２１のボルト孔３３に対
応してボルト孔６１が明いている。６３はＴボルト、６
５はナットである。Referring back to FIG. 1 again, reference numeral 55 is a push wheel arranged behind the lock ring 43. The inner peripheral surface 57 on the front surface side of the push ring 55 has a lock ring 43.
The taper surface has the same angle as the taper of the outer peripheral surface 47. Further, the push ring 55 is provided with a flange 59 that expands outward, and a bolt hole 61 corresponding to the bolt hole 33 of the main body 21 is formed in the flange 59. 63 is T bolt, 6
5 is a nut.
【００１４】図１は、この継ぎ手の締結前の状態を示し
ている。この状態からボルト６３、ナット６５を締めは
じめると、押し輪５５が図中右に引っ張られる。この
時、押し輪５５の傾斜した内周面５７がロックリング４
３の傾斜した外周面に当接し、ロックリング４３を図中
右方へ移動させ、ロックリング４３のこの移動により、
シールリング３５が圧縮される。圧縮されるに従い、シ
ールリング３５の抵抗力が強まり、ロックリング４３の
右方への移動が制限されるようになり、ロックリング４
３は次第にその径が縮小し始める。そして遂には、図４
に示すように、ロックリング４３の爪部４９、５２が被
接続管３４の外周面に食いつくこととなる。この食い込
んだ爪は、被接続管３２が水圧の影響でこの継ぎ手２０
すなわち他方の管３３から離脱するのを効果的に阻止す
る。FIG. 1 shows a state before the joint is fastened. When the bolt 63 and the nut 65 are started to be tightened from this state, the push wheel 55 is pulled right in the drawing. At this time, the slanted inner peripheral surface 57 of the push wheel 55 causes the lock ring 4 to move.
The lock ring 43 is brought into contact with the inclined outer peripheral surface of No. 3 and moved to the right in the figure, and by this movement of the lock ring 43,
The seal ring 35 is compressed. As it is compressed, the resistance of the seal ring 35 increases and the rightward movement of the lock ring 43 is restricted.
The diameter of 3 gradually begins to decrease. And finally, Figure 4
As shown in FIG. 5, the claws 49 and 52 of the lock ring 43 bite on the outer peripheral surface of the connected pipe 34. The bite of the claw is caused by the water pressure of the pipe 32 to be connected.
That is, it effectively prevents the other tube 33 from being separated.
【００１５】[0015]
【発明の効果】以上の説明から明らかなように、本発明
の管用継ぎ手によれば、被接続管の離脱が確実に阻止さ
れ、且つ被接続管と他方の管との接続、接続部のシール
及び離脱阻止が、ボルト、ナットの締結という単一の作
業で行えるので、きわめて施工作業の効率化が図れるこ
ととなる。As is apparent from the above description, according to the pipe joint of the present invention, disconnection of the pipe to be connected is reliably prevented, and the pipe to be connected and the other pipe are connected, and the seal of the connecting portion is provided. In addition, since the detachment can be prevented by a single work of fastening the bolt and the nut, the efficiency of the construction work can be greatly improved.
【図１】本発明の一実施例にかかる管用継ぎ手の締結前
の状態を示す上側半断面図である。FIG. 1 is an upper half sectional view showing a state before fastening of a pipe joint according to an embodiment of the present invention.
【図２】ロックリングの平面図である。FIG. 2 is a plan view of a lock ring.
【図３】図２の３−３線による断面図である。3 is a sectional view taken along line 3-3 of FIG.
【図４】継ぎ手の締結後の状態を示す上側半断面図であ
る。FIG. 4 is an upper half sectional view showing a state after the joint is fastened.
【図５】従来の管用継ぎ手の一例を示す上側半断面図で
ある。FIG. 5 is an upper half sectional view showing an example of a conventional pipe joint.
２０ 継ぎ手 ２１ 継ぎ手本体 ２３ 孔 ２５ 凹所 ３０ フランジ ３２ 被接続管 ３３ 他方の管 ３５ シールリング ４３ ロックリング ４７ 外周面 ４９，５２ 爪部 ５５ 押し輪 ５７ 内周面 ５９ フランジ ６３ ボルト ６５ ナット 20 joint 21 joint body 23 hole 25 recess 30 flange 32 connected pipe 33 other pipe 35 seal ring 43 lock ring 47 outer peripheral surface 49, 52 claw 55 push ring 57 inner peripheral surface 59 flange 63 bolt 65 nut
Claims (3)
を受け入れる貫通孔と、外方に伸びるフランジと、前記
一端部側で前記貫通孔の径を拡大して形成された凹所と
を備えた継ぎ手本体と、前記凹所に配置され、前記被接
続管の外周上に嵌着される弾性シール部材と、前記シー
ル部材の背部に配置され、外周面は前記本体の前記一端
部から遠ざかるに連れて径が小さくなるテーパ状をな
し、前記シール部材の後端面に当接する前面部と、内周
面に形成された内方へ突出する先端が尖った爪を備え、
円周方向で所定の隙間をもって割られたロックリング
と、前記ロックリングの背部に配置され、外方へ拡がる
フランジを備え、前記本体の前記一端部に対面する前面
側内周面が、前記ロックリングの前記外周面のテーパに
対応したテーパ状になっている押し輪と、前記本体の前
記フランジと前記押し輪の前記フランジとを締結する締
結装置とを含んでなり、前記ロックリングの前記爪先端
での内径は、該ロックリングが自由なときには前記被接
続管の外形より大きく、少なくとも前記隙間が無くなる
ように縮径されたときには前記被接続管の外形より小さ
くなる、管用継ぎ手。1. A through hole for receiving one end of a connected pipe connected from one end side, a flange extending outward, and a recess formed by enlarging the diameter of the through hole on the one end side. A joint body provided with, an elastic seal member arranged in the recess and fitted on the outer circumference of the connected pipe, and arranged on the back of the seal member, the outer peripheral surface of which is from the one end of the main body. The taper shape has a diameter that decreases with distance, and includes a front surface portion that abuts on the rear end surface of the seal member, and a claw with an inwardly protruding tip formed on the inner peripheral surface,
A lock ring, which is divided with a predetermined gap in the circumferential direction, and a flange, which is arranged at the back of the lock ring and extends outward, has a front-side inner peripheral surface facing the one end of the main body, The pawl of the lock ring, comprising a push wheel having a tapered shape corresponding to the taper of the outer peripheral surface of the ring, and a fastening device for fastening the flange of the main body and the flange of the push ring. A pipe joint in which the inner diameter at the tip is larger than the outer shape of the connected pipe when the lock ring is free, and is smaller than the outer shape of the connected pipe when at least reduced in diameter so as to eliminate the gap.
前記爪は、円周方向に伸びる突条となっている、管用継
ぎ手。2. The pipe joint according to claim 1, wherein
A pipe joint in which the claws are ridges extending in the circumferential direction.
前記継ぎ手本体は、前記被接続管が該管用継ぎ手を介し
て接続される他方の管に一体に形成されている、管用継
ぎ手。3. The pipe joint according to claim 1, wherein
A pipe joint, wherein the joint body is integrally formed with the other pipe to which the pipe to be connected is connected via the pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17032894A JPH0814453A (en) | 1994-06-30 | 1994-06-30 | Joint for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17032894A JPH0814453A (en) | 1994-06-30 | 1994-06-30 | Joint for pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0814453A true JPH0814453A (en) | 1996-01-16 |
Family
ID=15902918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17032894A Pending JPH0814453A (en) | 1994-06-30 | 1994-06-30 | Joint for pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814453A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3029260A1 (en) * | 2014-12-01 | 2016-06-03 | Electrosteel Europe Sa | MECHANICAL LATCH SEAL JOINT COMPRISING TWO SEALING ZONES AND ITS IMPLEMENTATION FOR REALIZING LOCKED FLEXIBLE TUBULAR JUNCTION |
| CN109630776A (en) * | 2018-12-27 | 2019-04-16 | 安徽银龙泵阀股份有限公司 | A kind of Hermetical connecting structure for pump valve pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043770U (en) * | 1973-08-20 | 1975-05-02 | ||
| JPS5145805A (en) * | 1974-10-16 | 1976-04-19 | Japan National Railway | SETSUSHOKUDENSENRONO KYUDENSETSUZOKUSOCHI |
| JPS5385522A (en) * | 1976-12-30 | 1978-07-28 | Sadayoshi Yamazaki | Pipe joint |
| JPS5736926A (en) * | 1980-08-16 | 1982-02-27 | Fujii Toshitaka | UKEDAMA |
| JPS60186948A (en) * | 1984-03-06 | 1985-09-24 | Amada Co Ltd | Memory map structure containing external switch means |
| JPS6144886A (en) * | 1985-06-07 | 1986-03-04 | ソシエテ・デチユ−デ・シヤンテイフイツク・エ・アンデユストリエル・ドウ・リル−ドウ−フランス | N-(2'-tetrahydrofuranyl)alkylbenzoic acid amide and manufacture |
-
1994
- 1994-06-30 JP JP17032894A patent/JPH0814453A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043770U (en) * | 1973-08-20 | 1975-05-02 | ||
| JPS5145805A (en) * | 1974-10-16 | 1976-04-19 | Japan National Railway | SETSUSHOKUDENSENRONO KYUDENSETSUZOKUSOCHI |
| JPS5385522A (en) * | 1976-12-30 | 1978-07-28 | Sadayoshi Yamazaki | Pipe joint |
| JPS5736926A (en) * | 1980-08-16 | 1982-02-27 | Fujii Toshitaka | UKEDAMA |
| JPS60186948A (en) * | 1984-03-06 | 1985-09-24 | Amada Co Ltd | Memory map structure containing external switch means |
| JPS6144886A (en) * | 1985-06-07 | 1986-03-04 | ソシエテ・デチユ−デ・シヤンテイフイツク・エ・アンデユストリエル・ドウ・リル−ドウ−フランス | N-(2'-tetrahydrofuranyl)alkylbenzoic acid amide and manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3029260A1 (en) * | 2014-12-01 | 2016-06-03 | Electrosteel Europe Sa | MECHANICAL LATCH SEAL JOINT COMPRISING TWO SEALING ZONES AND ITS IMPLEMENTATION FOR REALIZING LOCKED FLEXIBLE TUBULAR JUNCTION |
| CN109630776A (en) * | 2018-12-27 | 2019-04-16 | 安徽银龙泵阀股份有限公司 | A kind of Hermetical connecting structure for pump valve pipeline |
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