CN105042250A - Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and exhaust pipe - Google Patents
Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and exhaust pipe Download PDFInfo
- Publication number
- CN105042250A CN105042250A CN201510388273.2A CN201510388273A CN105042250A CN 105042250 A CN105042250 A CN 105042250A CN 201510388273 A CN201510388273 A CN 201510388273A CN 105042250 A CN105042250 A CN 105042250A
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- Prior art keywords
- semi
- circular tube
- sealing
- sealing gasket
- bamboo
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Classifications
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- 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
- F16L47/065—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 outer surface of pipe and inner surface of sleeve or socket, the sealing rings being placed previously on the male part
Abstract
The invention discloses a sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and an exhaust pipe. The sealing joint is formed through butt joint combination of a first semicircular pipe and a second semicircular pipe, and a clamping device is disposed on the butt joint face. The exhaust pipe is arranged on the outer edge of the first semicircular pipe. The inner circle of the first semicircular pipe and the inner circle of the second semicircular pipe are each provided with two large annular grooves, two small annular grooves and sealing gasket grooves. Every two large annular grooves are formed in the two sides of the length middle point of the corresponding semicircular pipe. Every two small annular grooves are formed in the outer sides of the corresponding two large annular grooves. The two sides of each large annular groove are each provided with one sealing gasket groove. Sealing gaskets are disposed in the sealing gasket grooves. The sealing joint has the advantages that the elastic sealing gaskets tightly press the two sides of large annular ribs of the bamboo-like prestress plastic pipes, the sealing effect is good during vacuumizing construction, and compactness and fullness of vacuum prestress hole grout are facilitated; the plug boards are used for fastening and fixing the two bamboo-like prestress plastic pipes to achieve sealed connection, operation is easy and convenient, and performance is reliable.
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 plastic pipe racks plate and outlet pipe.
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 plastic pipe, this Bamboo-shaped prestressed plastic pipe 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 plastic pipe racks plate and outlet pipe 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 plastic pipe racks plate and outlet pipe, described SEALING FITTING is docked combination by the first semi-circular tube and the second semi-circular tube and is formed, and the outer rim of docking junction plane is provided with the gripping mechanism blocking its junction plane; The outlet pipe being provided with its semicircle tube wall through is protruded in described first semi-circular tube outer rim; The inner ring of the first semi-circular tube and the inner ring of the second semi-circular tube there are structure same position symmetrical spaced two large annular grooves, two little annular grooves and sealing gasket groove respectively; Described two large annular grooves are separately positioned on the both sides of the first semi-circular tube mid-length and the both sides of the second semi-circular tube mid-length; Described two little annular grooves are separately positioned on the outside of two large annular grooves; A sealing gasket groove is respectively arranged with in the both sides of each large annular groove; Described two large annular grooves are wrapped in the outer rim of the first large annular muscle of Bamboo-shaped prestressed plastic tube end that SEALING FITTING two ends connect respectively respectively; Described two little annular grooves are wrapped in the outer rim of the first little annular muscle of Bamboo-shaped prestressed plastic tube end that SEALING FITTING two ends connect respectively respectively; Described first sealing gasket groove on first semi-circular tube inner ring and the described second sealing gasket groove on the second semi-circular tube inner ring are all corresponding with the little straight tube position of the first large annular muscle both sides of described Bamboo-shaped prestressed plastic tube end; In described sealing gasket groove, respectively sealing gasket is housed.
Preferred version is: described gripping mechanism comprises: the outer rim along described first semi-circular tube and the second semi-circular tube docking junction plane protrudes two plugboard troughs arranging structure same position symmetry in oriented respective outside respectively, and described two 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 first semi-circular tube and the second semi-circular tube docking junction plane, be respectively arranged with locating stud and the positioning hole with detent fit.
Preferred version is: on the first semi-circular tube with the second semi-circular tube docking junction plane, be respectively arranged with the transverse sealing connecting groove being communicated with described its end of sealing gasket groove; Described sealing gasket comprise vertical seal joint shaft to multiple semicircles 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 the first semi-circular tube and the second semi-circular tube inner ring; Described lateral connection sealing gasket is separately positioned in the transverse sealing connecting groove on the first semi-circular tube and the second semi-circular tube docking junction plane.
Preferred version is: described outlet pipe endoporus is tapped hole; Outlet pipe is arranged in the middle part of the first semi-circular tube outer rim, and the through hole of outlet pipe connects the gap between two Bamboo-shaped prestressed plastic tube ends at SEALING FITTING two ends.
The invention has the beneficial effects as follows:
1, the present invention adopts elastic sealing gasket tightly to press to be rolled in the large annular muscle both sides of Bamboo-shaped prestressed plastic pipe, 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 band the first semi-circular tube of sealing gasket and the second semi-circular tube, then with plate clamping fixing can realize two Bamboo-shaped prestressed plastic pipes connect sealing, easy and simple to handle, reliable performance.
3, the present invention is with exhaust pipe structure, and the outside pipeline that can be threaded uses as outlet pipe, and the optimization of the position that is conducive to being in the milk in constructing, improves grouting quality.
4, 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 the first semi-circular tube 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 second semi-circular tube plan view in Fig. 1; Also be the right elevation of Fig. 6;
Fig. 6 is C-C sectional view in Fig. 5;
Fig. 7 is the plan view of sealing gasket in Fig. 1;
Fig. 8 is the D-D sectional view of Fig. 7;
Fig. 9 is the plan view of Fig. 1 centerboard;
Figure 10 is E direction view in Fig. 9;
Figure 11 is F direction view in Fig. 9.
" in accompanying drawing, sequence number illustrates "
1: the first semi-circular tube; 1a: the first little annular groove; 1b: first annular groove; 1c: outlet pipe; 1d: the first sealing gasket groove; 1e: the first plugboard trough; 1f: the first locating stud; 1g: the first positioning hole; 1j: the first transverse sealing connecting groove; 2: sealing gasket; 2a: longitudinal sealing pad; 2b: lateral connection sealing gasket; 3: Bamboo-shaped prestressed plastic pipe; 3a: little annular muscle; 3b: large annular muscle; 3c: little straight tube; 4: the second semi-circular tubes; 4a: the second little annular groove; 4b: second largest annular groove; 4c: the second sealing gasket groove; 4d: the second plugboard trough; 4e: the second locating stud; 4f: the second positioning hole; 4j: the second transverse sealing connecting groove; 5: plate; 5b: muscle; 5c: install and guide arrow; 6: 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 plastic pipe racks plate and outlet pipe, it is characterized in that, described SEALING FITTING 6 is docked combination by the first semi-circular tube 1 and the second semi-circular tube 4 and is formed, and the outer rim of docking junction plane is provided with the gripping mechanism blocking its junction plane.
The outlet pipe 1c being provided with its semicircle tube wall through is protruded in described first semi-circular tube 1 outer rim; The inner ring of the first semi-circular tube 1 and the inner ring of the second semi-circular tube 4 there are respectively structure same position symmetrical spaced first annular groove 1b and second largest annular groove 4b, the first little annular groove 1a and the second little annular groove 4a, the first sealing gasket groove 1d and the second sealing gasket groove 4c.
Described first annular groove 1b and second largest annular groove 4b is separately positioned on the both sides of the first semi-circular tube 1 mid-length and the both sides of the second semi-circular tube 4 mid-length; Described first little annular groove 1a and the second little annular groove 4a is separately positioned on the outside of first annular groove 1b and second largest annular groove 4b.A first sealing gasket groove 1d and the second sealing gasket groove 4c is respectively arranged with in the both sides of each first annular groove 1b and second largest annular groove 4b.
Described first annular groove 1b and second largest annular groove 4b are wrapped in the outer rim of the first large annular muscle 3b in Bamboo-shaped prestressed plastic pipe 3 end that SEALING FITTING 6 two ends are connected respectively respectively; Described first little annular groove 1a and the second little annular groove 4a are wrapped in the outer rim of the first little annular muscle 3a in Bamboo-shaped prestressed plastic pipe 3 end that SEALING FITTING 6 two ends are connected respectively respectively; The little straight tube 3c position of all first with the described Bamboo-shaped prestressed plastic pipe 3 end large annular muscle 3b both sides of described second sealing gasket groove 4c on the described first sealing gasket groove 1d on the first semi-circular tube 1 inner ring and the second semi-circular tube 4 inner ring is corresponding; In described first sealing gasket groove 1d and the second sealing gasket groove 4c, sealing gasket 2 is housed respectively.
Described gripping mechanism comprises: the outer rim of docking junction plane along described first semi-circular tube 1 and the second semi-circular tube 4 protrudes the first plugboard trough 1e and the second plugboard trough 4d that arrange structure same position symmetry in oriented respective outside respectively, and described first plugboard trough 1e and the second plugboard trough 4d axially tilts in the conical surface along SEALING FITTING 6; Described first plugboard trough 1e and the second plugboard trough 4d is clamped by the plate 5 of the band conical surface.
Dock on junction plane at described first semi-circular tube 1 and the second semi-circular tube 4 and be respectively arranged with: the first locating stud 1f and the second locating stud 4e, the first positioning hole 1g coordinated with the first locating stud 1f and the second locating stud 4e and the second positioning hole 4f.
The the first transverse sealing connecting groove 1j and the second transverse sealing connecting groove 4j that junction plane are respectively arranged with and are communicated with described first its end of sealing gasket groove 1d and second its end of sealing gasket groove 4c is docked at the first semi-circular tube 1 and the second semi-circular tube 4.
Described sealing gasket 2 comprises the longitudinal sealing pad 2a of multiple semicircles of vertical seal joint 6 axis and is parallel to SEALING FITTING 6 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 described first sealing gasket groove 1d on the first semi-circular tube 1 and the second semi-circular tube 4 inner ring and the second sealing gasket groove 4c; Described lateral connection sealing gasket 2b is separately positioned in the first transverse sealing connecting groove 1j that the first semi-circular tube 1 and the second semi-circular tube 4 dock on junction plane and in the second transverse sealing connecting groove 4j.
Described outlet pipe 1c endoporus is tapped hole, is convenient to connect outside pipeline and is used as outlet pipe use.Outlet pipe 1c is arranged in the middle part of the first semi-circular tube 1 outer rim, and the through hole of outlet pipe 1c connects the gap between two Bamboo-shaped prestressed plastic pipe 3 ends at SEALING FITTING 6 two ends.
In particular, protruding along the oriented respective outside of outer rim of half flat mouthful of pipe, 1 two docking junction planes two the first plugboard trough 1e that structure same position symmetry is set; Two the second plugboard trough 4d that structure same position symmetry is set are being protruded in oriented respective outside respectively along the outer rim of the 2nd half flat mouthful of pipe 4 two docking junction planes; Axially tilt in the conical surface along SEALING FITTING 6 after first plugboard trough 1e and the second plugboard trough 4d combines, after the first plugboard trough 1e and the second plugboard trough 4d combines, cross section is dove-tail form.
Plate 5 is along SEALING FITTING 6 axially in skewed, and plate 5 angle of inclination is same as the tilt angle with the first plugboard trough 1e and the second plugboard trough 4d; The cross section of plate 5 is that dovetail groove is for being fitted in the conical surface after the first plugboard trough 1e and the second plugboard trough 4d combination.
First semi-circular tube 1 junction plane has two the first locating stud 1f, the size of each the first locating stud 1f is just in time inserted in the second positioning hole 4f on the second semi-circular tube 4, and small―gap suture coordinates.Equally, the second semi-circular tube 4 junction plane has two the second locating stud 4e, the size of each the second locating stud 4e is just in time inserted in the first positioning hole 1g on the first semi-circular tube 1, and small―gap suture coordinates.
During use, after locating stud on first semi-circular tube 1 and the second semi-circular tube 4 junction plane and positioning hole alignment are plugged together, first plugboard trough 1e and the second plugboard trough 4d also aligns and is adjacent to, then end is guided to insert from the first plugboard trough 1e and the second plugboard trough 4d small end according to arrow 5c plate 5, Xiang great Duan moves, and clamps the first semi-circular tube 1 and the second semi-circular tube 4.
As shown in the figure, two first annular groove 1b and two the second largest annular groove 4b that the first semi-circular tube 1 inner ring and the second semi-circular tube 4 inner ring are arranged respectively are used for wrapping up in the outer rim of the first large annular muscle 3b in Bamboo-shaped prestressed plastic pipe 3 end; Two the first little annular groove 1a that first semi-circular tube 1 inner ring and the second semi-circular tube 4 inner ring are arranged respectively and two the second little annular groove 4a are wrapped in the outer rim of the first little annular muscle 3a in Bamboo-shaped prestressed plastic pipe 3 end that SEALING FITTING 6 two ends are connected respectively respectively.
Have in the second sealing gasket groove 4c in the first sealing gasket groove 1d of each first annular groove 1b left and right sides and in each second largest annular groove 4b left and right sides and be all provided with semicircular sealing gasket 2, 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 first sealing gasket groove 1d and the first transverse sealing connecting groove 1j, in described second sealing gasket groove 4c and in the second transverse sealing connecting groove 4j.
The Thickness Ratio first sealing gasket groove 1d of sealing gasket 2 and the degree of depth of the second sealing gasket groove 4c large, after installing, sealing gasket 2 is from the first sealing gasket groove 1d and the projecting inward part of the second sealing gasket groove 4c, because sealing gasket 2 adopts rubber or other elastic material to make, when the first semi-circular tube 1 and the second semi-circular tube 4 combine compression, on the sealing gasket 2 little straight tube 3c being wrapped in first large annular muscle 3b both sides, Bamboo-shaped prestressed plastic pipe 3 end tightly, thus play seal action.
As shown in Figure 1, in use, the Bamboo-shaped prestressed plastic pipe 3 connected is needed to align placement by two, then the first semi-circular tube 1 and the second semi-circular tube 4 that sealing gasket 2 is housed are enclosed within the outer rim of Bamboo-shaped prestressed plastic pipe 3 end respectively, combined closely in first semi-circular tube 1 and the second semi-circular tube 4 mating face and be fixed on Bamboo-shaped prestressed plastic pipe 3 end, under the pressuring action of sealing gasket 2, be easy to realize vacuum seal and connect.
Claims (5)
1. one kind connects the SEALING FITTING of Bamboo-shaped prestressed plastic pipe racks plate and outlet pipe, it is characterized in that, described SEALING FITTING (6) is docked to combine by the first semi-circular tube (1) and the second semi-circular tube (4) and is formed, and the outer rim of docking junction plane is provided with the gripping mechanism blocking its junction plane; The outlet pipe (1c) being provided with its semicircle tube wall through is protruded in described first semi-circular tube (1) outer rim; The inner ring of the first semi-circular tube (1) and the inner ring of the second semi-circular tube (4) there are symmetrical spaced two the large annular groove (1b of structure same position respectively, 4b), two little annular groove (1a, 4a) with sealing gasket groove (1d, 4c); Described two large annular grooves (1b, 4b) are separately positioned on the both sides of the first semi-circular tube (1) mid-length and the both sides of the second semi-circular tube (4) mid-length; Described two little annular grooves (1a, 4a) are separately positioned on the outside of two large annular grooves (1b, 4b); A sealing gasket groove (1d, 4c) is respectively arranged with in the both sides of each large annular groove (1b, 4b); Described two large annular grooves (1b, 4b) are wrapped in the outer rim of the first large annular muscle (3b) in Bamboo-shaped prestressed plastic pipe (3) end that SEALING FITTING (6) two ends connect respectively respectively; Described two little annular grooves (1a, 4a) are wrapped in the outer rim of the first little annular muscle (3a) in Bamboo-shaped prestressed plastic pipe (3) end that SEALING FITTING (6) two ends connect respectively respectively; Described first sealing gasket groove (1d) on first semi-circular tube (1) inner ring and the described second sealing gasket groove (4c) on the second semi-circular tube (4) inner ring are all corresponding with little straight tube (3c) position of first large annular muscle (3b) both sides, described Bamboo-shaped prestressed plastic pipe (3) end; Sealing gasket (2) is housed respectively in described sealing gasket groove (1d, 4c).
2. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed plastic pipe racks plate and outlet pipe described in claim 1, it is characterized in that, described gripping mechanism comprises: the outer rim along described first semi-circular tube (1) and the second semi-circular tube (4) docking junction plane protrudes two the plugboard trough (1e arranging structure same position symmetry in oriented respective outside respectively, 4d), described two plugboard troughs (1e, 4d) are axially tilted in the conical surface along SEALING FITTING (6); By plate (5) clamping of the band conical surface on described plugboard trough (1e, 4d).
3. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed plastic pipe racks plate and outlet pipe described in claim 1, it is characterized in that, described first semi-circular tube (1) and the second semi-circular tube (4) docking junction plane are respectively arranged with locating stud (1f, 4e) and with locating stud (1f, the positioning hole (1g, 4f) 4e) coordinated.
4. according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed plastic pipe racks plate and outlet pipe described in claim 1, it is characterized in that, first semi-circular tube (1) with the second semi-circular tube (4) docking junction plane are respectively arranged with and are communicated with described sealing gasket groove (1d, 4c) the transverse sealing connecting groove (1j, 4j) of its end; Described sealing gasket (2) comprises the longitudinal sealing pad (2a) of the axial multiple semicircles of vertical seal joint (6) and is parallel to SEALING FITTING (6) 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 (1d, 4c) on the first semi-circular tube (1) and the second semi-circular tube (4) inner ring; Described lateral connection sealing gasket (2b) is separately positioned in the transverse sealing connecting groove (1j, 4j) on the first semi-circular tube (1) and the second semi-circular tube (4) docking junction plane.
5., according to a kind of SEALING FITTING connecting Bamboo-shaped prestressed plastic pipe racks plate and outlet pipe described in claim 1, it is characterized in that, described outlet pipe (1c) endoporus is tapped hole; Outlet pipe (1c) is arranged in the middle part of the first semi-circular tube (1) outer rim, and the through hole of outlet pipe (1c) is positioned at SEALING FITTING (6) two ends and connects gap between two Bamboo-shaped prestressed plastic pipe (3) ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388273.2A CN105042250A (en) | 2015-07-03 | 2015-07-03 | Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388273.2A CN105042250A (en) | 2015-07-03 | 2015-07-03 | Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105042250A true CN105042250A (en) | 2015-11-11 |
Family
ID=54449048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510388273.2A Pending CN105042250A (en) | 2015-07-03 | 2015-07-03 | Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards and exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042250A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE828333C (en) * | 1950-09-05 | 1952-01-31 | Alfred Schwesig | Connection for duct ends |
| 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 |
| CN201351785Y (en) * | 2009-02-16 | 2009-11-25 | 林锐志 | Spiral tube connecting piece |
| CN205136917U (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 bamboo -shaped prestressing force plastics pipe racks picture peg and blast pipe |
-
2015
- 2015-07-03 CN CN201510388273.2A patent/CN105042250A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE828333C (en) * | 1950-09-05 | 1952-01-31 | Alfred Schwesig | Connection for duct ends |
| 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 |
| CN201351785Y (en) * | 2009-02-16 | 2009-11-25 | 林锐志 | Spiral tube connecting piece |
| CN205136917U (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 bamboo -shaped prestressing force plastics pipe racks picture peg and blast pipe |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |