CN105020527A - Seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes - Google Patents
Seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes Download PDFInfo
- Publication number
- CN105020527A CN105020527A CN201510387848.9A CN201510387848A CN105020527A CN 105020527 A CN105020527 A CN 105020527A CN 201510387848 A CN201510387848 A CN 201510387848A CN 105020527 A CN105020527 A CN 105020527A
- Authority
- CN
- China
- Prior art keywords
- semi
- circular tube
- sealing
- sealing gasket
- snap close
- 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
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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
- F16L47/08—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
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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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0036—Joints for corrugated pipes
- F16L25/0063—Joints for corrugated pipes with two corrugated pipes being directly connected to each other
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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
- F16L47/12—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
Abstract
The invention discloses a seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes. The seal joint is formed by butting a first semicircular pipe and a second semicircular pipe, and a lock catch locking device is arranged at the outer edge of the butting combination surface. Two large annular grooves, two small annular grooves and sealing gasket grooves are respectively formed in the inner rings of the first semicircular pipe and the second semicircular pipe. The two large annular grooves are respectively formed in the two sides of the length midpoint of the first semicircular pipe and the two sides of the length midpoint of the second semicircular pipe, and the two small annular grooves are respectively formed in the outer sides of the two large annular grooves. One sealing gasket groove is respectively formed in the two sides of each large annular groove, and a sealing gasket is mounted in each sealing gasket groove. The seal joint has the beneficial effects that the sealing gaskets are tightly pressed on the two sides of a large annular rib of each bamboo-like prestressed plastic pipe, so that the sealing effect is good, and the compactness and the plumpness of prestressed duct grouting are facilitated; the two semicircular pipes are fixed through lock catches, so that the two bamboo-like prestressed plastic pipes are connected in a sealing manner, the operation is easy, and the 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 connect Bamboo-shaped prestressed plastic pipe racks snap close locking SEALING FITTING.
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 at the scene in construction, 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, and sealing effect is 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 the locking of Bamboo-shaped prestressed plastic pipe racks snap close 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 the locking of Bamboo-shaped prestressed plastic pipe racks snap close, described SEALING FITTING is docked combination by the first semi-circular tube and the second semi-circular tube and is formed, and docking junction plane outer rim is protruded and is provided with the snap close locking device that snap close locks its junction plane; The inner ring of described first semi-circular tube and the inner ring of the second semi-circular tube have 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 snap close locking device comprises: protrude in described first semi-circular tube docking junction plane outer rim and arrange jam plate; Described second semi-circular tube docking junction plane outer rim is protruded the snap close fixed plate corresponding with jam plate position and snap close are set, the hinged snap close having a hollow frame in described snap close fixed plate both sides, is locked in the lock buckling groove cambered surface of jam plate end face after rotating snap close its hollow frame is slipped over chamfering that jam plate tilts.
Preferred version is: described snap close locking device has two or more.
Preferred version is: on described 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.
Beneficial effect of the present invention is:
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 adopts snap close to be locked the first semi-circular tube and the second semi-circular tube, can realize the connection sealing of two Bamboo-shaped prestressed plastic pipes, 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, shows simultaneously and analyses and observe E portion;
Fig. 3 is E portion enlarged view in Fig. 2;
Fig. 4 is the plan view of the first semi-circular tube in Fig. 1, is also the right elevation of Fig. 5;
Fig. 5 is B-B sectional view in Fig. 4;
Fig. 6 is F portion enlarged view in Fig. 5;
Fig. 7 is the second semi-circular tube plan view in Fig. 1; Also be the right elevation of Fig. 8;
Fig. 8 is C-C sectional view in Fig. 7;
The plan view of sealing gasket in Fig. 9 Fig. 1;
Figure 10 is the D-D sectional view of 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: the first sealing gasket groove; 1d: jam plate; 1e: chamfering; 1f: lock buckling groove; 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: snap close; 4e: snap close fixed plate; 4j: the second transverse sealing connecting groove; 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 the locking of Bamboo-shaped prestressed plastic pipe racks snap close, described SEALING FITTING 5 is docked combination by the first semi-circular tube 1 and the second semi-circular tube 4 and is formed, and docking junction plane outer rim is protruded and is provided with the snap close locking device that snap close locks its junction plane.
The inner ring of described first semi-circular tube 1 and the inner ring of the second semi-circular tube 4 have 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 1c and the second sealing gasket groove 4c respectively.
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.An a first sealing gasket groove 1c and 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.
A 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 5 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 5 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 1c 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 1c and the second sealing gasket groove 4c, sealing gasket 2 is housed respectively.
Described snap close locking device comprises: dock protrusion in junction plane outer rim at described first semi-circular tube 1 and arrange jam plate 1d; Dock in junction plane outer rim at described second semi-circular tube 4 and protrude the setting snap close fixed plate 4e corresponding with jam plate 1d position and snap close 4d, the hinged snap close 4d having a hollow frame in described snap close fixed plate 4e both sides, is locked in the lock buckling groove 1f cambered surface of jam plate 1d end face after rotating snap close 4d its hollow frame is slipped over chamfering 1e that jam plate 1d tilts.
Described snap close locking device has two or more.As shown in Figure 1 and Figure 2, the snap close locking device on the first semi-circular tube 1 every side docking junction plane and on the second semi-circular tube 4 every side docking junction plane all has two.
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 1c and second its end of sealing gasket groove 4c is docked at described 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 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 described first sealing gasket groove 1c 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.
In particular, as shown in Figure 1 and Figure 2, in described snap close locking device, the bending of snap close 4d Round Steel Bar is made, and jam plate 1d is enclosed in the hollow frame of snap close 4d; The two ends of snap close 4d are hinged in snap close fixed plate 4e two side channel, the two ends of snap close 4d upwards overturn along hinge axes, be locked in the lock buckling groove 1f cambered surface of jam plate 1d end face, realize being locked the first semi-circular tube 1 and the second semi-circular tube 4, two Bamboo-shaped prestressed plastic pipes 3 can be fastenedly connected; Snap close 4d overturns the combination of unclamping between the first semi-circular tube 1 and the second semi-circular tube 4 downwards.
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 5 two ends are connected respectively respectively.
Have in the second sealing gasket groove 4c in the first sealing gasket groove 1c 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 semicircle longitudinal sealing pad 2a and two lateral connection sealing gasket 2b to be put into respectively in described first sealing gasket groove 1c with in the first transverse sealing connecting groove 1j, in the second sealing gasket groove 4c and in the second transverse sealing connecting groove 4j.
The Thickness Ratio first sealing gasket groove 1c 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 1c 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, upwards overturn snap close 4d, slip over chamfering 1e, stick in lock buckling groove 1f smoothly, first semi-circular tube 1 and the second semi-circular tube 4 junction plane are combined closely and is 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 (4)
1. one kind connects the SEALING FITTING of Bamboo-shaped prestressed plastic pipe racks snap close locking, it is characterized in that, described SEALING FITTING (5) is docked to combine by the first semi-circular tube (1) and the second semi-circular tube (4) and is formed, and docking junction plane outer rim is protruded and is provided with the snap close locking device that snap close locks its junction plane; The inner ring of described first semi-circular tube (1) and the inner ring of the second semi-circular tube (4) have structure same position symmetrical spaced two large annular groove (1b respectively, 4b), two little annular groove (1a, 4a) with sealing gasket groove (1c, 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 (1c, 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 (5) 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 (5) two ends connect respectively respectively; Described first sealing gasket groove (1c) 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 (1c, 4c).
2. according to the SEALING FITTING connecting the locking of Bamboo-shaped prestressed plastic pipe racks snap close a kind of described in claim 1, it is characterized in that, described snap close locking device comprises: protrude in described first semi-circular tube (1) docking junction plane outer rim and arrange jam plate (1d); Described second semi-circular tube (4) docking junction plane outer rim is protruded the snap close fixed plate (4e) corresponding with jam plate (1d) position and snap close (4d) are set, the hinged snap close (4d) having a hollow frame in described snap close fixed plate (4e) both sides, is locked in lock buckling groove (1f) cambered surface of jam plate (1d) end face after rotating snap close (4d) its hollow frame is slipped over chamfering (1e) that jam plate (1d) tilts.
3., according to the SEALING FITTING connecting the locking of Bamboo-shaped prestressed plastic pipe racks snap close a kind of described in claim 1, it is characterized in that, described snap close locking device has two or more.
4. according to the SEALING FITTING connecting the locking of Bamboo-shaped prestressed plastic pipe racks snap close a kind of described in claim 1, it is characterized in that, described 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 (1c, 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 (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, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510387848.9A CN105020527A (en) | 2015-07-03 | 2015-07-03 | Seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510387848.9A CN105020527A (en) | 2015-07-03 | 2015-07-03 | Seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105020527A true CN105020527A (en) | 2015-11-04 |
Family
ID=54410708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510387848.9A Pending CN105020527A (en) | 2015-07-03 | 2015-07-03 | Seal joint with lock catch locking for connecting bamboo-like prestressed plastic pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105020527A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1385935A (en) * | 2001-05-10 | 2002-12-18 | 橘敬久 | Pipe connector |
| KR200337783Y1 (en) * | 2003-10-16 | 2004-01-07 | 주식회사 사이몬 | device for join of pipe |
| CN204062296U (en) * | 2014-08-13 | 2014-12-31 | 江苏日龙塑料制品有限公司 | A kind of pvc pipe mounting assembly |
| CN205155438U (en) * | 2015-07-03 | 2016-04-13 | 天津鑫坤泰预应力专业技术有限公司 | Sealing joint who connects locking of bamboo -shaped prestressing force plastics pipe racks hasp |
-
2015
- 2015-07-03 CN CN201510387848.9A patent/CN105020527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1385935A (en) * | 2001-05-10 | 2002-12-18 | 橘敬久 | Pipe connector |
| KR200337783Y1 (en) * | 2003-10-16 | 2004-01-07 | 주식회사 사이몬 | device for join of pipe |
| CN204062296U (en) * | 2014-08-13 | 2014-12-31 | 江苏日龙塑料制品有限公司 | A kind of pvc pipe mounting assembly |
| CN205155438U (en) * | 2015-07-03 | 2016-04-13 | 天津鑫坤泰预应力专业技术有限公司 | Sealing joint who connects locking of bamboo -shaped prestressing force plastics pipe racks hasp |
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|---|---|---|---|
| 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 |
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| RJ01 | Rejection of invention patent application after publication |