EP0397716A1 - Injection device for introducing fluids under pressure into cracked structures. - Google Patents
Injection device for introducing fluids under pressure into cracked structures.Info
- Publication number
- EP0397716A1 EP0397716A1 EP89901263A EP89901263A EP0397716A1 EP 0397716 A1 EP0397716 A1 EP 0397716A1 EP 89901263 A EP89901263 A EP 89901263A EP 89901263 A EP89901263 A EP 89901263A EP 0397716 A1 EP0397716 A1 EP 0397716A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection
- injection device
- packer
- coupling device
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 115
- 239000007924 injection Substances 0.000 title claims abstract description 115
- 239000012530 fluid Substances 0.000 title abstract 4
- 230000008878 coupling Effects 0.000 claims abstract description 49
- 238000010168 coupling process Methods 0.000 claims abstract description 49
- 238000005859 coupling reaction Methods 0.000 claims abstract description 49
- 239000004568 cement Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 22
- 210000002445 nipple Anatomy 0.000 description 19
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 238000007789 sealing Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
Definitions
- the invention relates to an injection device for the injection of liquid substances, in particular cement suspensions, by a in a cracked structure, e.g. B. from concrete or masonry, introduced borehole, with an injection packer, in which a continuous channel is formed, which connects an outer entry area with an exit area, and with a coupling device assigned to the injection packer for connecting the entry area to a delivery line, in the liquid substance to be injected is under pressure.
- Injection packers of this type are suitable for high-pressure injections with injection pressures of 200 bar and above, but also for injections at a pressure of a few bar.
- the crack is first drilled sideways, preferably at an angle, and then inserted into the drilled hole of the injection packer.
- this is first determined in the borehole in such a way that it cannot be pushed out of the borehole by injection pressures of 200 bar and above (by the reaction pressure of the injected mass).
- the liquid material for example liquid plastic, is then pressed through the inner channel of the injection packer and the crack in the structure is thereby filled.
- the liquid substance hardens or sets after a certain period of time, as a result of which the hydrostatic pressure on the injection packer is also eliminated.
- the injection packer is thus a borehole closure that must be anchored or clipped so firmly in the borehole that it withstands the reaction pressure of the injected mass during the actual injection process and afterwards until the plastic has hardened.
- Injection devices of the type mentioned at the outset are known from German Offenlegungsschriften 26 33 434 or 3100 840 or utility model 83 30 425, in which the injection packer has a truncated cone-shaped jacket and is designed as a round wedge.
- the borehole is only formed so large that the wedge-shaped shaft can be inserted somewhat into the borehole.
- the injection packer is then driven into the borehole by blows of the urine, and wedges there. Subsequently, an extension piece, usually a nipple, belonging to the injection packer must be screwed into the entry area so that a spray gun can be attached.
- this known injection device has several disadvantages: screwing in the nipple takes time.
- the injection packers stems with nipples
- the nipples must be screwed into each individual shaft; the shaft either has a pre-cut thread or the nipple has a self-tapping thread. There are always errors when screwing in the nipple . The respective shaft is then no longer usable.
- injection devices of the type mentioned at the outset are known in so-called assembly packers, see for example DE-PS 25 50 555, in which a tubular rubber piece, for example a section of a rubber tube, is clamped between two disks and by a screwing movement in which the two Moving disks together so that the Gu ⁇ mimuffe braced in the borehole.
- assembly packers see for example DE-PS 25 50 555
- a tubular rubber piece for example a section of a rubber tube
- the previously mentioned nipples are also used in this known injection device, which serve as an attachment for the attachment of a spray gun, which here is also the coupling device. These nipples must be screwed into an internal thread intended for them.
- Cement suspensions consist of the finest (flour-fine) granular constituents and are just as liquid (have a corresponding viscosity) as synthetic resins, but it is not possible to press them through conventional grease nipples. It is possible to press in the sealing ball of the grease nipple, but the cement suspension does not flow around this ball sufficiently.
- the passage cross sections of the known injection devices are greatly restricted in that the nipple has only a small free opening cross section in the open state.
- the known injection devices therefore have the disadvantage that only a limited amount of liquid substance can be pressed through the injection device per unit of time.
- the entire injection process takes up too much time and you have to use substances that remain sufficiently liquid throughout the entire injection process, so the substance to be injected must not begin the curing process or the setting process within the entire injection time. This in turn also delays the final setting or hardening of the injection material that can be used.
- the nipple used according to the prior art has a dual function: on the one hand, with its outer area, it serves for the positive connection of a spray gun and, on the other hand, as a valve.
- the valve function is eliminated, the interaction of the disc and the pocket brings about the mechanical hold and the seal between these two parts and thus between the delivery line for the substance to be injected and the shaft of the injection packer.
- the object of the invention is to remedy this. It is based on the object, while retaining the advantages of the known injection device of the type mentioned at the outset, in such a way that it is also suitable for pressing in cement suspensions, offers a larger passage cross section, as a result of which a larger amount of liquid injection material per unit time can flow through the injection device and thus faster setting or faster curing injection materials can be used.
- the coupling device designed as a sliding coupling has a radially extending pocket which borders on an outlet part of a mouth supplying the liquid substance and that the outer entry region of the injection packer has a disk which protrudes laterally with respect to the adjacent area of the injection packer and is adapted in shape to the pocket.
- the injection packer has a disc at its outer end region. It serves to connect and hold the coupling device.
- the disc is designed so that it can be inserted radially into the pocket of the coupling device and is then axially fixed.
- the outlet part By means of the outlet part, the seal against the injection packer is achieved; at the same time, the outlet part exerts a mechanical pressure on the disk, as a result of which the injection packer is held non-positively or positively in the coupling device.
- the coupling device is placed from above onto the injected packer, the disc of which protrudes freely from the borehole.
- the pocket of the coupling device is therefore open at the bottom.
- the coupling device also holds onto the injection packer due to its weight, to which the weight of the connected delivery line is added.
- the delivery channel for the liquid substance to be injected runs practically exclusively in a straight line.
- the flow of the liquid substance to be injected remains contiguous, that is, it does not have to flow around any object and is not necessarily constricted by any means, such as, for example, the nipple. Rather, the minimum cross-section for the flow channel of the substance to be injected can be freely specified because it is not limited by other components.
- the injection device according to the invention has no valve in the inlet area.
- the disc serves to hold and seal against the coupling device, but this does not achieve a valve function and is also not desired at this point in order not to split the flow of the injecting material.
- An advantage of the injection device according to the invention is that the coupling device can be reused.
- the coupling device in contrast to the previously known injection devices, in which even if one unscrews the nipple in a time-consuming manner, cleaning of the inner passage area of the nipple has to be practically ruled out, ie the nipple is lost after a single use, occurs between the coupling device and the outlet part of the injection packer no permanent, at least one connection to be loosened, the coupling device can be easily cleaned - and therefore reused - simply because of its large passage cross-sections.
- the injection device according to the invention can be designed so that the flow channel of the substance to be injected is straight and for example, does not fall below a minimum diameter of 3 or 5 mm. Because of this geometry, the injection device can be used for practically all currently known injection materials.
- the pocket is preferably provided in the vicinity of an end region of the coupling device.
- the coupling device is an essentially cylindrical part. It can thus be designed in a simple manner, but in order to be able to connect the injection packer to the coupling device even in places that are difficult to access, it has proven to be advantageous to produce kinked coupling devices for such special applications.
- the pocket is preferably embodied in a sleeve and is radially delimited by a semicircular surface, to which two mutually parallel surfaces connect tangentially, the spacing of which is somewhat larger than the outer diameter of the disk.
- An internal thread is preferably provided in the sleeve.
- the coupling device has such a sleeve, which is designed with an internal thread, and a feed pipe which interacts with this internal thread and which forms the outlet part in the form of an annular disk or seal at its front end region.
- the connection to the washer of the injection packer is achieved by screwing the feed pipe relative to the sleeve with the washer in the pocket until it comes into contact with the washer and its cutting edge or seal is pressed against the washer in this way that a sealing seat between the outlet part and the disc is achieved.
- the outlet part which is designed as an annular cutting edge, is in the shape of a truncated cone with a through hole for the liquid substance, the outer, truncated cone-shaped The jacket penetrates the channel of the disk and wedges (in the sense of a round wedge) with the inner wall of this channel.
- the outlet part has an annular sealing projection, which is formed either by an elastic rubber ring or by a metallic cutting edge and cooperates sealingly with the flat surface of the disk, in which the cutting edge is stamped into a soft material of the disk or the elastic sealing ring is sealing against the disc.
- This (first) embodiment of the coupling device has the advantage of a particularly simple construction, as a result of which cleaning and thus reuse are also simple.
- a secure seal is achieved, by pressing the outlet part against the window of the injection packer, the degree of the seal can be set as desired and can also be improved during the injection.
- the outlet part is an elastic ring which is connected to the sleeve and projects into the area of the pocket.
- the seal against the injection packer is achieved by means of the ring, and at the same time the ring exerts a mechanical pressure on the disk, as a result of which the injection packer is non-positively held in the coupling device.
- the connection between the injection packer and the coupling device is achieved only by radially inserting the packer disk into the pocket of the coupling device.
- the coupling device can be made very short.
- the ring is interchangeably housed in the coupling device, preferably it is part of a disc, which can also have a hat profile, and is made of a rubber-like material.
- the outside of the ring is surrounded and thus protected by a cap-shaped metal part, which absorbs the shear forces that occur when the disc is inserted into the pocket and thereby counteracts wear and, at the same time, mechanically supports the ring so that it is inserted ⁇ ben cannot be tilted or shifted.
- FIG. 1 is an assembly picture of a coupling device, the individual parts of which are shown in axial section,
- FIG. 2 shows a plan view of the end region of the coupling device according to FIG. 1 facing the injection packer and formed with a pocket
- Fig. 3 is a side view of the housing of the coupling device.
- FIG. 5 shows a plan view of the outer entrance area of the injection packer according to FIG. 4,
- FIG. 6 shows a detailed image corresponding to FIG. 4 for a further exemplary embodiment of the injection packer
- FIG. 7 shows an assembly picture of an injection device according to the invention with an outlet part in the form of a frustoconical hollow cutting edge and an injection packer arranged in a borehole, all individual parts are shown in axial section,
- Fig. 8 shows a section of the complete injection device according to
- the injection device according to the invention consists of a coupling device 20 and an injection packer 22.
- the latter has a continuous channel 24 which connects an outer entry area 26 to an exit area 28.
- This channel 24 has a clear diameter of 4 to 6 mm (depending on the exemplary embodiment), which remains as unchanged as possible over the entire length of the channel.
- the entry region 26 is designed as a disk 30 which has a diameter of 22 mm (second exemplary embodiment, FIGS. 1 to 6) or 18 mm (the further exemplary embodiments).
- the disc 26 is adjoined by a cylindrical region 72 of the outer shell, which is provided in order to enable the disc 30 to engage behind the disc 30 Area 72 is cylindrical in order to be able to apply the coupling device 20 in all angular positions.
- the injection packer 22 is in each case a plastic packer, the outer jacket of which tapers in steps from the outlet region 26 to the outlet region 28.
- three sawtooth-shaped ribs 32 which run in a ring, are formed in an evenly distributed manner. As seen from the entry area 26, they project freely at a right angle of approximately 1.5 ⁇ m and then run back into the tapering contour after a total length of 5 mm.
- This packer is made of an impact-resistant plastic, for example manufactured using the injection molding process, its plastic is sufficiently strong that it can be sealed in the borehole.
- the coupling device 20 is constructed from several individual parts. It has a sleeve 34 on one end face (which faces in the drawing of FIG. 4) a pocket 36 for receiving the disc 30 is formed.
- the pocket 36 is delimited in the radial direction by a semicircular surface 40, which is adjoined by two straight, rectangular surfaces 42 which extend tangentially to the ends of the semicircular surface 40.
- the pocket 36 is axially delimited on the one hand by a surface 44 and on the other hand by a web 46 which is approximately 2 ⁇ m wide and has the same shape as the pocket 36, but forms a semicircular surface with a smaller diameter (difference 3 mm).
- the described geometry of the pocket etc. can also be seen from the illustrations in FIGS. 2 and 3.
- FIG. 3 which only shows the sleeve 34
- the pocket 36 is open at the top in relation to the paper plane, the disk 30 is therefore introduced from above in this illustration. In practice, these processes are rotated exactly 180 degrees.
- the sleeve 34 has an internal bore 48 which is partially provided with an internal thread and which runs centrally to the semicircular surface 40 and is delimited by a ridge 50 opposite the pocket 36.
- a support ring 52 with the outermost regions of a rounded, in the illustration lower surface 54 lies on this ridge
- the Ge ⁇ netrie is such that this lower surface 60 protrudes into the space of the pocket 36 when the support ring 52 and ring 58 are mounted, to the extent that when the disc 30 is pushed in, it is held in a frictional manner by the ring 58.
- the inner bore 48 is closed to the outside by a screw 64 provided with a longitudinal bore 62, a sealing ring seals between the upper end face of the sleeve 34 and the lower face of the screw head of the screw 64, for it there is a corresponding recess in the upper end face the sleeve 34 provided.
- the screw 64 has a thread in its lower area, which cooperates with the internal thread of the - [- nn --___ bore 48. When screwed together, the screw 64 presses the ring 58 and the support ring 52 towards the pocket, so that the position described above is maintained.
- the screw 64 has an internal thread 68 in the outside region of its inner bore, to which a delivery hose or a valve, for example a ball valve, to which the delivery line is in turn attached, can be introduced.
- a radial threaded bore 70 for a grub screw (not shown) is provided in the sleeve 34.
- the diameter of the semicircular surface 40 is essentially matched to the outer diameter of the disk 30 and the outer diameter of the cylinder region 72 adjoining the disk 30 is essentially the diameter of the semicircular surface of the web 46 corresponds.
- the two surfaces 42 are at a distance which is slightly larger than the outer diameter of the disk 34. The same applies to the analog surfaces of the web 46 in relation to the cylinder region 72.
- FIGS. 4 and 5 show that the outer end wall of the injection packer 22 is a flat circular disk. It is advisable to round off its outer edge somewhat so as not to damage the surface 60 of the ring 58 when the disk 30 is inserted into the pocket 36.
- the coupling device 20 is disassembled for cleaning or - if this should be necessary - for exchanging the ring 58, from the illustration it can be seen that no complex cleaning work is required since the parts are simple.
- the parts 34, 52 and 64 of the coupling device are preferably made of metal, but they can also be made of plastic.
- a sleeve 34 made in particular of metal can also be used as an anvil.
- the channel 24 of the injection packer is not open at the bottom, rather the lower end region is closed off, the outlet region 28 is formed by a plurality of radially running bores at the same axial height.
- an elastic piece of tubing 74 for example a piece of silicone tubing, which is inserted into a corresponding recess in the outer jacket and as a result does not protrude as far as possible from the free contour of the outer jacket.
- a valve similar to the valve of a bicycle tube is obtained.
- the pressurized liquid injection substance lifts off the hose piece 74, so that the injection substance can flow through the radial bores which form the outlet region 28. A backflow is not possible.
- FIG. 1 shows that the channel through which the injection liquid flows through the coupling device 20 runs in a straight line and is radially essentially limited only by the inner diameter of the ring 58.
- the coupling device 20 and the injection packer 22 are coaxial. All individual parts of the cooling device 20, that is to say the parts 34, 52, 58 and 64, are also coaxial.
- the coupling device 20 in the first exemplary embodiment according to FIG. 7 consists only of two individual parts, a sleeve 34 and a feed pipe 76.
- the sleeve is constructed similarly to the sleeve according to the first exemplary embodiment, in particular the pocket 36 is of comparable design, however the axial length of the sleeve 34 is approximately 2.5 times as large in order to have sufficient gripping surface on the outer jacket of the sleeve 34 for a manual screw connection, which will be explained later. If one wants to do without this large gripping surface, the sleeve 34 can also be made as short as shown in FIG. 1. However, as shown in FIG. 7, a degree 50 is not present.
- the feed pipe 76 has essentially the shape of a hollow screw and has an external thread 76 in its lower region, which cooperates with the internal thread of the sleeve 34.
- a head 80 of the feed pipe 76 also has a large outer jacket surface in order to be able to grip it well and to facilitate the screw connection between the sleeve 34 and the feed pipe 76 even at higher torques.
- the feed pipe 76 forms an outlet part 58 in the form of an integral, frustoconical, hollow cutting edge.
- the diameter of the truncated cone-shaped outer jacket is smaller at the free end region than the inner diameter of the channel 24, but e widens to a diameter which is significantly larger than this inner diameter, so that a conical interference fit between the inlet region 26 of the channel 24 and the outlet part 58 is achieved when the feed pipe 76 is pressed by screwing against the disc 30.
- an injection packer which is shown here made of plastic, but can also be a metal packer, is placed in a borehole 82 of a building body 84. It projects only the pane 30 and the area 72, as well as a short piece of the adjacent area, from the building body 84.
- the two parts 34, 76 of the coupling device 20 are screwed together until the outlet part 58 does not yet protrude into the area of the pocket 36.
- the coupling device 20 is pushed radially over the injection packer 22 in the direction of the arrow 86, and the pocket 36 then receives the disk 30.
- the feed pipe 76 is screwed relative to the sleeve 34, the cutting-shaped outlet part 58 penetrates into the entry area of the channel 34 and displaces the plastic material, which is softer than the metallic cutting edge, until a tight press fit, which can be felt when screwing in, is achieved.
- the injection process can now begin when a delivery hose, as described above, is attached to the internal thread 68 of the feed pipe 76.
- Fig. 8 shows a modified version, here the design of the outlet part 58 is different. It is an annular circumferential bulge and the free end of the feed pipe 76 forming one piece from the metal of the feed pipe 76, as is known for vacuum seals. When screwed, it digs into the plastic material of the disk and forms an annular sealing surface.
- the embodiment according to FIG. 8 has the advantage that the outlet part 58 cannot be damaged as easily as in the embodiment according to FIG. 7.
- the passage cross section for the substance to be injected (longitudinal bore 62) is not reduced below the dimension of the diameter of the channel 24.
- a seal against metallic disks 30, which is still possible in the exemplary embodiment according to FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Un injecteur d'introduction sous pression de fluides, notamment de suspensions de ciment, à travers un orifice percé dans une bâtisse fissurée, par exemple en béton ou en maçonnerie, comprend un manchon d'injection (22) traversé par un canal débouchant (24) qui relie une zone extérieure d'admission (26) avec une zone de sortie (28), et un dispositif d'accouplement (20) relié au manchon d'injection (22) qui sert à raccorder la zone d'admission (26) à un conduit qui contient le fluide sous pression à injecter. Le dispositif d'accouplement coulissant (20) comprend une poche (36) adjacente au côté de sortie (58) d'une ouverture de passage du fluide. La zone extérieure d'admission (26) du manchon d'injection (22) présente un bord annulaire (30) qui fait radialement saillie sur la partie adjacente (72) du manchon d'injection (22) et dont la forme est adaptée à celle de la poche (36).An injector for introducing pressurized fluids, in particular cement suspensions, through an orifice drilled in a cracked building, for example made of concrete or masonry, comprises an injection sleeve (22) traversed by a through channel (24 ) which connects an outside intake area (26) with an outlet area (28), and a coupling device (20) connected to the injection sleeve (22) which is used to connect the intake area (26 ) to a duct which contains the pressurized fluid to be injected. The sliding coupling device (20) includes a pocket (36) adjacent to the outlet side (58) of a fluid passage opening. The external intake zone (26) of the injection sleeve (22) has an annular edge (30) which projects radially from the adjacent part (72) of the injection sleeve (22) and whose shape is adapted to that of the pocket (36).
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89901263T ATE89888T1 (en) | 1988-01-15 | 1989-01-14 | INJECTION DEVICE FOR INJECTING LIQUID SUBSTANCES INTO CRACKED STRUCTURES. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8800387U DE8800387U1 (en) | 1988-01-15 | 1988-01-15 | Injection device for injecting liquid substances into cracked building structures |
DE8800387U | 1988-01-15 | ||
DE8810323U | 1988-08-16 | ||
DE8810323U DE8810323U1 (en) | 1988-01-15 | 1988-08-16 | Injection device for injecting liquid substances into cracked building structures |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0397716A1 true EP0397716A1 (en) | 1990-11-22 |
EP0397716B1 EP0397716B1 (en) | 1993-05-26 |
Family
ID=25952583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89901263A Expired - Lifetime EP0397716B1 (en) | 1988-01-15 | 1989-01-14 | Injection device for introducing fluids under pressure into cracked structures |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0397716B1 (en) |
DE (2) | DE8810323U1 (en) |
WO (1) | WO1989006731A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992016707A1 (en) * | 1991-03-21 | 1992-10-01 | Svenic Australia Pty. Ltd. | Injection flange |
DE4120212A1 (en) * | 1991-06-19 | 1992-12-24 | Fischer Artur Werke Gmbh | INJECTION PACKER |
DE9312859U1 (en) * | 1993-08-27 | 1994-09-22 | Discher, Hannelore, 34305 Niedenstein | Foldable injection packer for hole closures in masonry or the like. |
DE102004020852B4 (en) * | 2004-04-28 | 2006-07-13 | Hilti Ag | concrete dowel |
DE102016211366B4 (en) * | 2016-06-24 | 2020-10-08 | Desoi Gmbh | Device for pressing behind hollow thermal insulation facades |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2949054A1 (en) * | 1979-12-06 | 1981-06-11 | Holz- und Bautenschutz Willi de Graaff, 5300 Bonn | Bore sealing device for injected substances - involves longitudinally split dowel with smaller inner dia. recess than threaded rod outer dia. |
DE3203871A1 (en) * | 1982-02-05 | 1983-08-18 | Artur Dr.H.C. 7244 Waldachtal Fischer | HIGH PRESSURE PACKER FOR INJECTING RESIN IN CONCRETE Cracks |
AU563462B2 (en) * | 1983-03-29 | 1987-07-09 | Foundation Technology (Aust.) Pty. Ltd. | Epoxy resin injection system for crack repair |
CA1240288A (en) * | 1983-12-20 | 1988-08-09 | Wataru Orikasa | Adhesive-filling apparatus and method |
AU5065185A (en) * | 1985-08-16 | 1987-03-10 | Jang, J.G. | Device for reinforcing a concrete wall and the method thereof |
-
1988
- 1988-08-16 DE DE8810323U patent/DE8810323U1/en not_active Expired
-
1989
- 1989-01-14 EP EP89901263A patent/EP0397716B1/en not_active Expired - Lifetime
- 1989-01-14 DE DE8989901263T patent/DE58904508D1/en not_active Expired - Fee Related
- 1989-01-14 WO PCT/DE1989/000018 patent/WO1989006731A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8906731A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE8810323U1 (en) | 1989-01-19 |
EP0397716B1 (en) | 1993-05-26 |
DE58904508D1 (en) | 1993-07-01 |
WO1989006731A1 (en) | 1989-07-27 |
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