CN105020528A - Seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes - Google Patents
Seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes Download PDFInfo
- Publication number
- CN105020528A CN105020528A CN201510387702.4A CN201510387702A CN105020528A CN 105020528 A CN105020528 A CN 105020528A CN 201510387702 A CN201510387702 A CN 201510387702A CN 105020528 A CN105020528 A CN 105020528A
- Authority
- CN
- China
- Prior art keywords
- flat mouth
- sealing
- bamboo
- grooves
- pipe
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 38
- 229920003023 plastic Polymers 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 101
- 210000003205 muscle Anatomy 0.000 claims description 16
- 238000003032 molecular docking Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract 2
- 238000005086 pumping Methods 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end 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
- F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
- F16L25/0036—Joints for corrugated pipes
- F16L25/0063—Joints for corrugated pipes with two corrugated pipes being directly connected to each other
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes. The seal joint is formed through the butt joint combination of one pair of half flat mouth pipes having opposite and identical mirror symmetry structures, and clamping devices for clamping the combination surfaces of the half flat mouth pipes are arranged on the outer edges of butt joint surfaces. Two large grooves, two small grooves and seal pad grooves are formed in the inner circle of each half flat mouth pipe, the two large grooves are formed in the two sides of the length middle point of each half flat mouth pipe, the two small grooves are respectively formed in the outer sides of the two large grooves, the seal pad grooves are respectively formed in the two sides of each large groove, and flat mouth seal pads are respectively arranged in the seal pad grooves. The seal joint has the advantages that the flat mouth seal pads are tightly wrapped on the two sides of large flat mouth ribs of the bamboo-like prestressed flat mouth plastic pipes, so that the seal effect is great during vacuum pumping construction, and duct grouting compactness and plumpness are ensured; and the hermetical connection of the two bamboo-like prestressed flat mouth plastic pipes is realized through the clamping and fixing of the plugboards, and the operation is simple and convenient.
Description
Technical field
The present invention relates to be prestress wire construction in plastic pipe sealing joint, particularly be a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate.
Background technique
In recent years along with the development of construction industry, prestressed concrete is promoted gradually, and compared with conventional steel bar concrete, it is high that prestressed concrete has intensity, save the advantages such as material, now advanced technology is vacuum grouting post tension concrete technology.Its feature is first concreting, pre-plugged metal tube or plastic tube in concrete, after concrete reaches some strength, tractive prestress wire in built-in metal pipe or plastic tube again, then with ground tackle, prestress wire is fixed on component, finally vacuumizes at pipeline one end vacuum pump, make it produce the degree of vacuum of-0.1Mpa, with grouting pump, special cement is poured into from the pipeline the other end again, until be full of pipeline.These metal tubes or plastic tube not only need for prestress wire provides protective barrier, also need higher sealing to ensure the quality of vacuum grouting.
More advanced in present embedding pipe fittings is Bamboo-shaped prestressed flat mouth plastic tube, this Bamboo-shaped prestressed flat mouth plastic tube intensity is high, quality is better, but in constructing at the scene, this plastic tube generally adopts thermoplastic to weld, or the mode twining sealant tape is interconnected, these Placement process are loaded down with trivial details, cannot arrange outlet pipe, and sealing effect are poor, be easy to the phenomenon leaked air, affect degree of compaction and the plumpness of vacuum prestressed pore passage grouting.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, a kind of a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate of easy and simple to handle, good seal performance is provided.
The technological scheme solved the problems of the technologies described above is: a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate, described SEALING FITTING is made up of with a pair half flat mouthful of pipe docking combination of specular relatively structure, and the outer rim on docking mating face is provided with the gripping mechanism blocking its junction plane; Two big grooves that the inner ring of described each half flat mouthful of pipe all has structure same intervals to arrange, two little grooves and sealing gasket groove; Described two big grooves are separately positioned on the both sides of each half flat mouthful of length of tube mid point; Described two little grooves are separately positioned on the outside of two big grooves; A sealing gasket groove is respectively arranged with in the both sides of each big groove; Described two big grooves are wrapped in the outer rim of the first large flat mouth muscle in Bamboo-shaped prestressed flat mouth plastic tube end that SEALING FITTING two ends connect respectively respectively; Described two little grooves are wrapped in the outer rim of the first little flat mouth muscle in Bamboo-shaped prestressed flat mouth plastic tube end that SEALING FITTING two ends connect respectively respectively; Described sealing gasket groove is corresponding with the little straight tube position of first large flat mouth muscle both sides, described Bamboo-shaped prestressed flat mouth plastic tube end; In described sealing gasket groove, flat mouth sealing gasket is housed respectively.
Preferred version is: described gripping mechanism comprises: the outer rim along described a pair half flat mouthful of pipe docking junction plane protrudes the two pairs of plugboard troughs arranging structure same position symmetry in oriented respective outside respectively, and described two pairs of plugboard troughs axially tilt in the conical surface along SEALING FITTING; Described plugboard trough is clamped by the plate of the band conical surface.
Preferred version is: on described a pair half flat mouthful of pipe docking junction plane, be respectively arranged with locating stud and the positioning hole with detent fit.
Preferred version is: on described a pair half flat mouthful of pipe docking junction plane, be respectively arranged with the transverse sealing connecting groove being communicated with described sealing gasket groove; Described flat mouth sealing gasket comprise vertical seal joint shaft to multiple half flat mouthful of cast longitudinal sealing pad and be parallel to SEALING FITTING axially and be positioned at the lateral connection sealing gasket at multiple longitudinal sealing pad two ends; Described multiple longitudinal sealing pad is separately positioned in the described sealing gasket groove on described a pair half flat mouthful of pipe inner ring; Described lateral connection sealing gasket is separately positioned in the transverse sealing connecting groove on described a pair half flat mouthful of pipe docking junction plane.
Beneficial effect of the present invention is:
1, the present invention adopts elasticity flat mouth sealing gasket tightly to press to be rolled in the large flat mouth muscle both sides of Bamboo-shaped prestressed flat mouth plastic tube, and when vacuumizing construction, good sealing effect, contributes to degree of compaction and the plumpness of vacuum prestressed pore passage grouting.
2, the present invention directly aligns and plugs together two half flat mouth pipes of the flat mouth sealing gasket of band, then with plate fix can realize two Bamboo-shaped prestressed flat mouth plastic tubes connect sealing, easy and simple to handle, reliable performance.
3, structure of the present invention is simple, and easy to process, suit large area to popularize use.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is the plan view of half flat mouthful of pipe in Fig. 1, is also the right elevation of Fig. 4;
Fig. 4 is B-B sectional view in Fig. 3;
Fig. 5 is the plan view of flat mouth sealing gasket in Fig. 1;
Fig. 6 is the C-C sectional view of Fig. 5;
Fig. 7 is the plan view of Fig. 1 centerboard;
Fig. 8 is E direction view in Fig. 7;
Fig. 9 is F direction view in Fig. 7.
" in accompanying drawing, sequence number illustrates "
1: half flat mouth pipe; 1a: little groove; 1b: big groove; 1c: sealing gasket groove; 1d: plugboard trough; 1e: locating stud; 1f: positioning hole; 1g: transverse sealing connecting groove; 2: flat mouth sealing gasket; 2a: longitudinal sealing pad; 2b: lateral connection sealing gasket; 3: Bamboo-shaped prestressed flat mouth plastic tube; 3a: little flat mouth muscle; 3b: large flat mouth muscle; 3c: little straight tube; 4: plate; 4b: muscle; 4c: install and guide arrow; 5: SEALING FITTING.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further illustrated.
As shown in the figure, the invention provides a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate, described SEALING FITTING 5 is relatively docked combination with a pair half flat mouthful of pipe 1 of specular by structure and is formed, and the outer rim on docking mating face is provided with the gripping mechanism blocking its junction plane.
Two big groove 1b that the inner ring of described each half flat mouthful of pipe 1 all has structure same intervals to arrange, two little groove 1a and sealing gasket groove 1c; Described two big groove 1b are separately positioned on the both sides of each half flat mouthful of pipe 1 mid-length; Described two little groove 1a are separately positioned on the outside of two big groove 1b; A sealing gasket groove 1c is respectively arranged with in the both sides of each big groove 1b.
Described two big groove 1b are wrapped in the outer rim of the first large flat mouth muscle 3b in Bamboo-shaped prestressed flat mouth plastic tube 3 end that SEALING FITTING 5 two ends connect respectively respectively; Described two little groove 1a are wrapped in the outer rim of the first little flat mouth muscle 3a in Bamboo-shaped prestressed flat mouth plastic tube 3 end that SEALING FITTING 5 two ends connect respectively respectively; Described sealing gasket groove 1c is corresponding with the little straight tube 3c position of first large flat mouth muscle 3b both sides, described Bamboo-shaped prestressed flat mouth plastic tube 3 end; In described sealing gasket groove 1c, sealing gasket 2 is housed respectively.
Described gripping mechanism comprises: the outer rim of docking junction plane along described a pair half flat mouthful of pipe 1 protrudes the two couples of plugboard trough 1d arranging structure same position symmetry in oriented respective outside respectively, and described two couples of plugboard trough 1d axially tilt in the conical surface along SEALING FITTING 5; Described plugboard trough 1d is clamped by the plate 4 of the band conical surface.
Positioning hole 1f junction plane being respectively arranged with locating stud 1e and coordinating with locating stud 1e is docked at described a pair half flat mouthful of pipe 1.
Transverse sealing connecting groove 1g junction plane being respectively arranged with and being communicated with described sealing gasket groove 1c is docked at described a pair half flat mouthful of pipe 1; Described sealing gasket 2 comprises the longitudinal sealing pad 2a of multiple half flat mouthful of cast of vertical seal joint 5 axis and is parallel to SEALING FITTING 5 axially and be positioned at the lateral connection sealing gasket 2b at multiple longitudinal sealing pad 2a two ends; Described multiple longitudinal sealing pad 2a is separately positioned in the described sealing gasket groove 1c on described a pair half flat mouthful of pipe 1 inner ring; Described lateral connection sealing gasket 2b is separately positioned on described a pair half flat mouthful of pipe 1 and docks in the transverse sealing connecting groove 1g on junction plane.
In particular, protrude in the oriented respective outside of the outer rim of the docking junction plane along a pair half flat mouthful of pipe 1 both sides two couples of plugboard trough 1d that structure same position symmetry is set; Described two couples of plugboard trough 1d all axially tilt in the conical surface along SEALING FITTING 5, and after two couples of plugboard trough 1d combine, cross section is dove-tail form.。
Plate 4 is along SEALING FITTING 5 axially in skewed, and plate 4 angle of inclination is same as the conical surface tilt angle of plugboard trough 1d; The cross section of plate 4 is dovetail groove, for being fitted in the conical surface after two pairs of plugboard trough 1d combinations.
Each half flat mouthful of pipe 1 junction plane there is two locating stud 1e and two positioning hole 1f respectively, locating stud 1e on each half flat mouthful of pipe 1 just in time inserts in the positioning hole 1f on the another half flat mouthful of pipe 1, and between described locating stud 1e and positioning hole 1f, small―gap suture coordinates.
During use, after locating stud on a pair half flat mouthful of pipe 1 junction plane and positioning hole alignment being plugged together, described two couples of plugboard trough 1d also align and are adjacent to, and then guide end to insert from plugboard trough 1d small end according to arrow 4c plate 4, Xiang great Duan moves, and clamps a pair half flat mouthful of pipe 1.
As shown in the figure, two big groove 1b that a pair half flat mouthful of pipe 1 inner ring is arranged respectively are used for wrapping up in the outer rim of the first large flat mouth muscle 3b in Bamboo-shaped prestressed flat mouth plastic tube 3 end; Two little groove 1a that a pair half flat mouthful of pipe 1 inner ring is arranged respectively are wrapped in the outer rim of the first little flat mouth muscle 3a in Bamboo-shaped prestressed flat mouth plastic tube 3 end that pipe SEALING FITTING 5 two ends connect respectively respectively.
In the sealing gasket groove 1c of each big groove 1b left and right sides, be all provided with flat mouth sealing gasket 2, flat mouth sealing gasket 2 is connected as a single entity by multiple longitudinal sealing pad 2a and two lateral connection sealing gasket 2b to be put into respectively in described sealing gasket groove 1c with in transverse sealing connecting groove 1g.
Described in the Thickness Ratio of sealing gasket 2, the degree of depth of sealing gasket groove 1c is large, after installing, flat mouth sealing gasket 2 is from the projecting inward part of sealing gasket groove 1c, because flat mouth sealing gasket 2 adopts rubber or other elastic material to make, when a pair half flat mouthful of pipe 1 combines compression, on the flat mouth sealing gasket 2 little straight tube 3c being wrapped in first large flat mouth muscle 3b both sides, Bamboo-shaped prestressed flat mouth plastic tube 3 end tightly, thus play seal action.
As shown in Figure 1, in use, the Bamboo-shaped prestressed flat mouth plastic tube 3 connected is needed to align placement by two, then a pair half flat mouthful of pipe that flat mouth sealing gasket 2 is housed is enclosed within the outer rim of Bamboo-shaped prestressed flat mouth plastic tube 3 end respectively, combined closely in a pair half flat mouthful of pipe 1 mating face and be fixed on Bamboo-shaped prestressed flat mouth plastic tube 3 end, under the pressuring action of flat mouth sealing gasket 2, be easy to realize vacuum seal and connect.
Claims (4)
1. one kind connects the SEALING FITTING of Bamboo-shaped prestressed flat mouth plastics pipe racks plate, it is characterized in that, described SEALING FITTING (5) is made up of with a pair half flat mouth pipe (1) docking combination of specular relatively structure, and the outer rim on docking mating face is provided with the gripping mechanism blocking its junction plane; Two big grooves (1b) that the inner ring of described each half flat mouth pipe (1) all has structure same intervals to arrange, two little grooves (1a) and sealing gasket groove (1c); Described two big grooves (1b) are separately positioned on the both sides of each half flat mouth pipe (1) mid-length; Described two little grooves (1a) are separately positioned on the outside of two big grooves (1b); A sealing gasket groove (1c) is respectively arranged with in the both sides of each big groove (1b); Described two big grooves (1b) are wrapped in the outer rim of the first large flat mouth muscle (3b) in Bamboo-shaped prestressed flat mouth plastic tube (3) end that SEALING FITTING (5) two ends connect respectively respectively; Described two little grooves (1a) are wrapped in the outer rim of the first little flat mouth muscle (3a) in Bamboo-shaped prestressed flat mouth plastic tube (3) end that SEALING FITTING (5) two ends connect respectively respectively; Described sealing gasket groove (1c) is corresponding with little straight tube (3c) position of first large flat mouth muscle (3b) both sides, described Bamboo-shaped prestressed flat mouth plastic tube (3) end; In described sealing gasket groove (1c), flat mouth sealing gasket (2) is housed respectively.
2. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate described in claim 1, it is characterized in that, described gripping mechanism comprises: the outer rim along described a pair half flat mouth pipe (1) docking junction plane protrudes the two pairs of plugboard troughs (1d) arranging structure same position symmetry in oriented respective outside respectively, and described two pairs of plugboard troughs (1d) are axially tilted in the conical surface along SEALING FITTING (5); By plate (4) clamping of the band conical surface on described plugboard trough (1d).
3. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate described in claim 1, it is characterized in that, the positioning hole (1f) that described a pair half flat mouth pipe (1) docking junction plane is respectively arranged with locating stud (1e) and coordinates with locating stud (1e).
4. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed flat mouth plastics pipe racks plate described in claim 1, it is characterized in that, described a pair half flat mouth pipe (1) docking junction plane is respectively arranged with the transverse sealing connecting groove (1g) being communicated with described sealing gasket groove (1c); Described flat mouth sealing gasket (2) comprises the longitudinal sealing pad (2a) of the axial multiple half flat mouthful of cast of vertical seal joint (5) and is parallel to SEALING FITTING (5) axis and is positioned at the lateral connection sealing gasket (2b) at multiple longitudinal sealing pad (2a) two ends; Described multiple longitudinal sealing pad (2a) is separately positioned in the described sealing gasket groove (1c) on described a pair half flat mouth pipe (1) inner ring; Described lateral connection sealing gasket (2b) is separately positioned in the transverse sealing connecting groove (1g) on described a pair half flat mouth pipe (1) docking junction plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510387702.4A CN105020528A (en) | 2015-07-03 | 2015-07-03 | Seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510387702.4A CN105020528A (en) | 2015-07-03 | 2015-07-03 | Seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105020528A true CN105020528A (en) | 2015-11-04 |
Family
ID=54410709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510387702.4A Pending CN105020528A (en) | 2015-07-03 | 2015-07-03 | Seal joint with plugboards for connecting bamboo-like prestressed flat mouth plastic pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105020528A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1963330A1 (en) * | 1969-12-17 | 1971-06-24 | Maschf V H Nv | Gas-tight sleeve coupling |
| US4652023A (en) * | 1984-02-13 | 1987-03-24 | Timmons Fred A | Repair coupler |
| CN1110774A (en) * | 1993-12-13 | 1995-10-25 | 古河电气工业株式会社 | Jointing device for a conduit |
| US6367849B1 (en) * | 1999-05-24 | 2002-04-09 | Totaku Industries, Inc. | Joint for corrugated pipe |
| CN2704736Y (en) * | 2004-06-02 | 2005-06-15 | 牛喜华 | Assembled rapid piping joints |
| CN205136930U (en) * | 2015-07-03 | 2016-04-06 | 天津鑫坤泰预应力专业技术有限公司 | Sealing joint who connects flat mouthful of plastics pipe racks picture peg of bamboo -shaped prestressing force |
-
2015
- 2015-07-03 CN CN201510387702.4A patent/CN105020528A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1963330A1 (en) * | 1969-12-17 | 1971-06-24 | Maschf V H Nv | Gas-tight sleeve coupling |
| US4652023A (en) * | 1984-02-13 | 1987-03-24 | Timmons Fred A | Repair coupler |
| CN1110774A (en) * | 1993-12-13 | 1995-10-25 | 古河电气工业株式会社 | Jointing device for a conduit |
| US6367849B1 (en) * | 1999-05-24 | 2002-04-09 | Totaku Industries, Inc. | Joint for corrugated pipe |
| CN2704736Y (en) * | 2004-06-02 | 2005-06-15 | 牛喜华 | Assembled rapid piping joints |
| CN205136930U (en) * | 2015-07-03 | 2016-04-06 | 天津鑫坤泰预应力专业技术有限公司 | Sealing joint who connects flat mouthful of plastics pipe racks picture peg of bamboo -shaped prestressing force |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |