WO2015127539A1 - Deployable plug system - Google Patents
Deployable plug system Download PDFInfo
- Publication number
- WO2015127539A1 WO2015127539A1 PCT/CA2015/000119 CA2015000119W WO2015127539A1 WO 2015127539 A1 WO2015127539 A1 WO 2015127539A1 CA 2015000119 W CA2015000119 W CA 2015000119W WO 2015127539 A1 WO2015127539 A1 WO 2015127539A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bladder
- assembly
- plug system
- handle
- gas
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
Definitions
- Embodiments of the present invention may relate to environmental remediation devices.
- embodiments of the present invention may include plugs having inflatable bladders that may seal openings after a hazardous material spill.
- Bodies of water are highly vulnerable to the detrimental effects of exposure to oil and other hazardous chemical spills. While highly publicized hazardous chemical spills are usually associated with chemical spills into large bodies of water such as lakes or oceans, smaller spills occur far more frequently at locations such as drilling sites, factories, and tanker truck accidents. Such smaller hazardous chemical spills can quickly travel along roadside ditches into culverts and streams and from there into adjacent water supplies to cause even more damage and destruction.
- Embodiments of the present invention include devices by which oil and other chemical spills can be prevented from dispersing to enable remediation efforts to be taken.
- embodiments of the present invention may contain and control oil and other hazardous chemicals spills along culverts to enable remediation.
- a deployable plug system comprising: an elongated handle assembly having a hollow conduit, a distal end with a conduit connector in fluid communication with the conduit and a hinge assembly having a handle mounting body, and a proximal end, wherein a gas control valve is affixed to the handle assembly at the proximal end, and wherein the gas control valve is configured to receive pressurized gas from a source of pressurized gas, the gas control valve further including a valve trigger which selectively applies pressurized gas from the source of pressurized gas to the conduit; and a bladder assembly having a bladder mounting body removably connectable to the handle mounting body, a bladder attached to the bladder mounting body, a check valve assembly for allowing pressurized gas from the conduit to enter the bladder, and a check valve assembly connector that selectively connects the check valve assembly to the conduit connector.
- the conduit connector is a junction block comprising a block.
- the block has a slot that extends along the block from a front opening
- the handle assembly includes a gas aperture that passes from the conduit into the slot.
- the check valve assembly connector includes a hose that selectively connects the check valve to the junction block to communicate pressurized gas from the conduit to the bladder.
- the hose selectively connects to the junction block using a discshaped sealing ring which slides into the slot. In some embodiments, the hose connects to the sealing ring and forms a seal with the junction block when the hose fits over the gas aperture.
- the deployable plug system further includes a release rod slidingly affixed to the handle assembly which may extend into the junction block.
- the release rod can push the sealing ring out of the slot.
- the check valve assembly connects to the hose using a barbed fitting.
- the source of pressurized gas is a removable compressed-gas canister that can be retained by the gas control valve.
- the compressed-gas canister is threadably connectable to the gas control valve.
- the gas canister contains compressed C0 2 .
- the gas canister contains compressed N 2 .
- the check valve assembly includes a one way check valve that allows gas to enter but not leave the bladder.
- the check valve assembly further includes a relief valve to enable pressurized gas to escape the bladder.
- the hinge assembly includes a fastener assembly that locks the hinge assembly relative to the handle assembly.
- the handle mounting body and the bladder mounting body include interlocking features.
- the handle mounting body is a handle mounting plate and the bladder mounting body is a bladder mounting plate.
- the handle mounting plate includes a male feature
- the bladder mounting plate includes a female feature
- the handle mounting plate can be locked into the bladder mounting plate by moving up and released by moving down.
- the male feature has a "T" cross-sectioned.
- the handle assembly has a handle on the proximal end of the handle assembly.
- valve trigger is disposed adjacent the handle.
- handle includes grip features.
- the bladder expands in length and width when filled with pressurized gas.
- the bladder includes ribs.
- the bladder is comprised of rubber.
- the handle mounting body and the bladder mounting body are configured to permit the handle assembly to be attached to and detached from the bladder assembly by sliding the distal end of the handle assembly relative to the bladder assembly.
- the conduit connector and the check valve assembly connector are configured to permit the conduit to be attached to and detached from the check valve assembly by sliding the distal end of the handle assembly relative to the bladder assembly.
- a deployable culvert plug system includes an elongated handle assembly having a hollow conduit, a distal end with a junction block in fluid communication with said conduit and a hinge assembly having a handle mounting plate, and a proximal end having a handle and a gas control valve for retaining a removable gas cylinder containing a pressurized gas.
- the gas control valve further includes a valve trigger which selectively applies pressurized gas to the conduit.
- the deployable culvert plug system further includes a bladder assembly having a bladder mounting plate that is removably connected to the handle mounting plate, a bladder that is attached to the bladder mounting plate, a check valve assembly for allowing pressurized gas to enter the bladder, and a hose that selectively connects the check valve assembly to the junction block.
- a bladder assembly having a bladder mounting plate that is removably connected to the handle mounting plate, a bladder that is attached to the bladder mounting plate, a check valve assembly for allowing pressurized gas to enter the bladder, and a hose that selectively connects the check valve assembly to the junction block.
- the handle assembly enables a user to deploy the bladder and the valve trigger selectively applies pressurized gas from a removable gas cylinder through the conduit, through the hose, through the check valve and into the bladder.
- the removable gas cylinder threads onto the gas control valve and the pressurized gas is C0 2 .
- the check valve assembly connects to the hose using a barbed fitting and the check valve assembly includes a check valve that allows gas to enter but not leave the bladder.
- the check valve assembly in some embodiments further includes a relief valve to enable pressurized gas to escape from the bladder.
- the hinge assembly includes a fastener assembly that locks the hinge assembly relative to the handle assembly and the handle mounting plate and the bladder mounting plate include interlocking features.
- the handle mounting plate may include a male feature, the bladder mounting plate may include a female feature, and the handle mounting plate can be locked into the bladder mounting plate by moving up and released by moving down.
- the male feature may be "T" cross-sectioned.
- the valve trigger may be disposed adjacent said handle and the handle may include grip features.
- the junction block is comprised of a block having a slot that extends along the block from a front opening
- the handle assembly includes a gas aperture that passes from the conduit into the slot.
- the hose in some embodiments connects to the junction block using a disc-shaped sealing ring which slides into the slot.
- the sealing ring in some embodiments connects to the hose and forms a seal with the junction block when the hose fits over the gas aperture.
- a release rod is slidingly affixed to the handle assembly and extends into the junction block. That release rod may push the sealing ring out of the slot.
- the bladder expands in length and width when filled with pressurized gas.
- the bladder includes ribs and is comprised of rubber.
- Fig. 1 is an environmental view of a deployable plug system 10 according to an embodiment of the present invention
- Fig. 2 is an exploded view of the deployable plug system 10 shown in Fig. 1 ;
- Fig. 3 is a perspective view of parts of a bladder assembly 20 and handle assembly 60 used in the deployable plug system 10 shown in Figs. 1 and 2;
- Fig. 4 is a close-up perspective view of a hose junction block 88 used in the deployable plug system 10 shown in Figs. 1 and 2;
- Fig 5 is a sectional view of the hose junction block 88 taken along section line A-A of Fig. 4; and,
- Fig. 6 is a perspective view of the proximal end of the handle assembly 60.
- FIG. 1 -6 An embodiment of the present invention is depicted within Figs. 1 -6. However, embodiments of the invention are not limited to what is specifically illustrated and described. A person skilled in the art will appreciate that many other embodiments of the invention are possible without deviating from the basic concept of the invention. Any such work around also falls with the scope of this invention.
- Figs. 1 and 2 respectively illustrate environmental and exploded views of a deployable plug system 10 according to an embodiment of the present invention.
- the deployable plug system 10 prevents fluid flow into and out of a culvert pipe 150 after a hazardous material spill, although alternative embodiments may prevent fluid flow into or out of other openings such as openings of manholes, catch basins, or other pipes for example.
- the deployable plug system 10 includes a bladder assembly 20 that is removably attached to a handle assembly 60.
- the handle assembly 60 enables a user to stand above and beside the culvert pipe 150 while positioning the bladder assembly 20 into the opening of the culvert pipe 150.
- the handle assembly 60 is configured to receive pressurized gas from a pressurized gas source, which in the embodiment shown is a threaded removable pressurized gas canister 78 in a threaded gas control valve 73.
- the gas canister 78 may include a pressure regulator to regulate pressure of pressurized gas released from the gas canister 78.
- the gas canister 78 may contain compressed non-flammable, non-poisonous, inert, and environmentally-friendly gas, such as compressed carbon dioxide (“CO2”) or compressed nitrogen (“N 2 ”) gas for example, and some or all of the compressed gas may be liquefied.
- CO2 compressed carbon dioxide
- N 2 compressed nitrogen
- the handle assembly 60 may retain other gas cylinders, canisters, or containers, or may receive pressurized gas from still other pressurized gas sources.
- the compressed gas may include other nonflammable, non-poisonous, inert, and environmentally-friendly gases such as air, argon, helium, or neon, or any combination of two or more of carbon dioxide, nitrogen, air, argon, helium, and neon.
- Compressed gases are available from various commercial sources, such as Matheson and Air Liquide for example, and costs and potential health hazards may be considerations when choosing a gas or mixture of gasses.
- pressurized gas in the gas canister 78 passes down a hollow center conduit 63 of the handle assembly 60 and into the bladder assembly 20. This is described in more detail below.
- a bladder 22 expands in length and width. If the bladder 22 is inside the culvert pipe 150 the bladder 22 expands against the wall of the culvert pipe 150 to form a seal which prevents water as well as spilled hazardous materials from entering or leaving the culvert pipe 150.
- the material of the bladder 22 and of the wall of the culvert pipe 150 will have a coefficient of friction such that frictional force between the bladder 22 and the wall of the culvert pipe 150 will generally be proportional to the outward force that the bladder 22 exerts on the wall of the culvert pipe 150, and the outward force that the bladder 22 exerts on the wall of the culvert pipe 150 will depend on the pressure of gas in the bladder 22.
- the pressure of the pressurized gas from the gas canister 78 should be sufficient to cause the bladder 22 to exert a sufficient outward force on the wall of the culvert pipe 150 to maintain the seal between the bladder 22 and the wall of the culvert pipe 150 when under external pressure from water or other substance or substances that the bladder 22 blocks from entering or leaving the culvert pipe 150.
- the bladder assembly 20 includes a unidirectional check valve 30 that is integral or attached to a bladder mounting body, which in the embodiment shown is a bladder mounting plate 26.
- the check valve 30 allows gas to enter but not leave the bladder 22.
- the bladder assembly 20 also includes an integral "poppet-type" relief valve 31 that enables gas inside the bladder 22 to be let out.
- the handle assembly 60 is attachable to and detachable from the bladder mounting plate 26 (as is discussed in more detail subsequently) to enable the inflated bladder assembly 20 to remain in the culvert pipe 150 while the handle assembly 60 is detached.
- the handle assembly 60 is re-attached to the bladder assembly 20 which is then deflated by depressing the relief valve 31.
- the bladder assembly 20 is sufficiently deflated it can be removed from the culvert pipe 150 to allow water to again flow through the culvert pipe 150.
- the bladder assembly 20 and the bladder 22 would be made available in multiple sizes and shapes to fit corresponding sizes of culvert pipes or other openings such as openings of manholes, catch basins, or other pipes for example.
- the bladder assembly 20 and its bladder 22 can be used for applications that range from small culverts under residential driveways to those through highway bypasses.
- the deployable plug system 10 could be used to temporarily seal manholes and other similar structures, or more generally various different pipes for example.
- sealing culvert pipes 150 should not necessarily be interpreted as a limiting factor of the deployable plug system 10.
- the handle assembly 60 includes a hinge assembly 102 that enables adjustment of the relative angle between the elongation axis of the handle assembly 60 and the bladder assembly 20.
- the hinge assembly 102 enables a user to be safely positioned along an embankment or other stable surface adjacent the culvert pipe 150 while installing the deployable plug system 10 into the culvert pipe 150.
- the hinge assembly 102 is envisioned as having a pivot that is integrally-molded or otherwise affixed to a handle mounting body, which in the embodiment shown is a handle mounting plate 100, such that the handle mounting plate 100 is pivotally connected to the handle 62.
- the handle mounting plate 100 is connected to the hinge assembly 102 by a fastener assembly 103 which selectively locks the hinge assembly 102 relative to the handle assembly 60.
- the fastener assembly 103 can be as simple as a bolt and a nut.
- the handle mounting plate 100 is rotated by the user to a desired angle with the handle 62 and is then locked in position by the user tightening the fastener assembly 103. This rigidly connects the handle mounting plate 100 in place to allow it to be used to insert the bladder assembly 20 into the culvert pipe 150.
- the other major components of the deployable plug system 10 are envisioned as being made of economic and light-weight plastic materials. However, other materials such as stainless steel, aluminum, and the like may also be used with benefit based upon a user's preference and the requirements of a particular remediation.
- the bladder assembly 20 includes the bladder mounting plate 26 and the handle assembly 60 includes the handle mounting plate 100.
- the bladder mounting plate 26 is adhesively or otherwise securely affixed to one end of the bladder 22.
- the handle mounting plate 100 is attached to the handle assembly 60.
- the bladder mounting plate 26 includes a pair of female locking features 27 and the handle mounting plate 100 includes a pair of interlocking male locking features 106.
- the male locking features 106 are vertically parallel "T" cross-sectioned shapes that can be inserted into vertically parallel openings of the female locking features 27 in a tab- and-slot fashion. When inserted into the female locking features 27 the male locking features 106 can be slide upward to lock into place and then downward to release.
- the bladder assembly 20 also includes a check valve assembly connector, which in the embodiment shown is a high-pressure hose 32, that connects to the check valve 30 via a barbed fitting or by another highly reliable leak-proof attachment.
- the check valve 30 is a one way valve that allows gas to enter the bladder 22 but prevents gas leakage when the handle assembly 60 is removed as is described subsequently.
- the hose 32 enables the gas to pass into the check valve 30 and thus into the bladder 22.
- the bladder 22 is envisioned as being a generally cylinder-shaped structure made of a heavy-duty rubber that is capable of resisting damage from sharp features that might be found in the culvert pipe 150.
- the bladder 22 has an exterior surface made up of generally parallel semi-circular ribs 24 which when inflated expand in overall length and diameter. This causes the ribs 24 to align with internal radial features of the culvert pipe 150 to form a seal.
- other embodiments may not include ribs 24.
- bladders intended to seal smooth inner surfaces of pipes, manholes, or catch basins bladders may have a smooth surface to seal such smooth inner surfaces.
- the hose 32 also connects to a conduit connector, which in the embodiment shown is a hose junction block 88 that is located near the distal end of the handle assembly 60.
- the hose junction block 88 is a boxlike structure integrally molded or otherwise permanently affixed to the handle assembly 60.
- the hose 32 connects to the hose junction block 88 using an integrally-molded disc-shaped sealing ring 34 which slides into a slot 89 of the hose junction block 88.
- the slot 89 extends between a rectangular front opening 90 to a circular rear rod aperture 92.
- the slot 89 is dimensioned to receive the sealing ring 34 to form a seal.
- the front opening 90 is dimensioned to allow the sealing ring 34 to enter the slot 89.
- the hose 32 and sealing ring 34 are located over a gas aperture 91 that passes through the conduit 63 of the handle 62 into the slot 89. This enables gas injected into the conduit 63 to pass into the first hose and then into the bladder assembly 20.
- the bladder assembly 20 and the handle assembly 60 are mechanically coupled together by the male locking features 106 and by the female locking features 27 and in fluid communications via the hose 32.
- the handle assembly 60 includes a sliding hose release rod 84. That hose release rod 84 extends from near the top of the handle 62 into the rod aperture 92 of the hose junction block 88. The hose release rod 84 is held to the handle 62 using linearly aligned rod brackets 85.
- the handle assembly 60 is detached from the hose 32 by the user pressing down on a rod trigger 86 of the hose release rod 84 (see FIG. 6). This moves the hose release rod 84 down, causing its lower end to slide through the rod aperture 92 to contact and push the sealing ring 34 down the slot 89 and out the front opening 90.
- the bladder mounting plate 26 and the handle mounting plate 100 can then be detached from each other by lowering and withdrawing the male locking features 106 from the female locking features 27.
- the handle assembly 60 is then fully disconnected from the bladder assembly 20 and may then be removed.
- the handle assembly may be fully decoupled from the bladder assembly by sliding the distal end of the handle assembly relative to the bladder assembly to disconnect the handle mounting body (the handle mounting plate 100 in the embodiment shown) from the bladder mounting body (the bladder mounting plate 26 in the embodiment shown), and to disconnect the conduit connector (the hose junction block 88 in the embodiment shown) from the check valve assembly connector (the high-pressure hose 32 in the embodiment shown), which may facilitate decoupling the handle assembly from the bladder assembly when compared to other devices.
- the distal end of the handle assembly may slide relative to the bladder assembly in directions other than in the embodiment shown.
- the bladder assembly 20 can remain within the culvert pipe 150 until the remediation project is complete.
- the handle assembly 60 is re-attached to the bladder assembly 20 by inserting the male locking features 106 into the female locking features 27 and then locking the male locking features 106 in place by sliding them upward.
- the bladder assembly 20 is then deflated by pushing down on the relief valve 31 until the bladder assembly 20 can be removed from the culvert pipe 150.
- the handle assembly may be reattached to the bladder assembly to remove the bladder assembly from an opening by sliding the distal end of the handle assembly relative to the bladder assembly to connect the handle mounting body (the handle mounting plate 100 in the embodiment shown) from the bladder mounting body (the bladder mounting plate 26 in the embodiment shown), which may facilitate reattaching the handle assembly from the bladder assembly when compared to other devices.
- the distal end of the handle assembly may slide relative to the bladder assembly in directions other than in the embodiment shown.
- Fig. 6 presents a more detailed view of the handle assembly 60 and its gas canister 78.
- the proximal end of the handle assembly 60 receives the gas canister 78.
- the handle assembly 60 includes a grip 66, the gas control valve 73, a spring-returned valve trigger 75, and a guard cylinder 80.
- the grip 66 enables the user to grasp the deployable plug system 10 securely while positioning the bladder assembly 20 within a culvert pipe 150.
- the grip 66 is envisioned as being made of a soft high-friction rubber or plastic material having a plurality of recessed finger reliefs 67 to improve gripping and manipulative control.
- the gas control valve 73 is envisioned as being integrally-molded or otherwise affixed to the handle assembly 60 adjacent the grip 66.
- the gas control valve 73 regulates fluid communication into the conduit 63 of the handle 62.
- the gas control valve 73 is manually activated via the valve trigger 75 to enable gas in the gas canister 78 to be released and to flow into the conduit 63.
- the valve trigger 75 also closes the conduit 63 to prevent release of contained gas.
- the gas control valve 73 includes female threads 77 and a guard cylinder 80.
- the guard cylinder 80 extends parallel to the handle 62 and has a cylinder aperture 82 that receives the gas canister 78.
- male threads 79 of the gas canister 78 engage the female threads 77 of the gas control valve 73.
- the guard cylinder 80 covers most of the gas canister 78 but leaves the gas canister 78 with a protruding bottom that enables a user to grasp and rotate the gas canister 78 as required to thread into the gas control valve 73.
- the gas canister 78 is envisioned as being a commercially-available product such as a twenty ounce (20oz.) canister of compressed gas such as C0 2 or N 2 , and the compressed gas may be in a gaseous or liquefied state, or both, or another type of gas cylinder or canister or other gas source that is capable of delivering a volume of gas sufficient to inflate the bladder 22.
- the gas canister 78 is envisioned as having an internal valve which is opened to deliver pressurized gas upon full engagement of the female 77 and male 79 threads.
- the check valve 30 of the bladder assembly 20 and the valve trigger 75 of the gas control valve 73 enable a plurality of gas canisters 78 to be attached and emptied without loss of gas in the bladder 22 and conduit 63.
- Embodiments of the present invention can be utilized by the common user in a simple and effortless manner with little or no training.
- the method of preparing the deployable plug system 10 for use can be performing by: procuring a model of the deployable plug system 10 having a particular size and shape which corresponds to an intended culvert pipe 150 or other similar structure such as a manhole; evacuating gas from the bladder 22 using the relief valve 31 as and if required; joining the bladder assembly 20 to the handle assembly 60 by attaching the bladder and handle mounting plates 26, 100 together by inserting and lifting the male locking features 106 into the female locking features 27; inserting the sealing ring 34 of the hose 32 into the front opening 90 and up the slot 89 of the hose junction block 88 until the sealing ring 34 is centered over the gas aperture 91 ; inserting a gas canister 78 into the guard cylinder 80; and, engaging and tightening the male threads 79 of the
- the method of installing the deployable plug system 10 within the culvert pipe 150 may be achieved by performing the following steps: safely positioning a user with respect to the culvert pipe 150; selecting a desired relative angle between the bladder assembly 20 and the handle assembly 60 by adjusting the hinge assembly 102 to the desired angle and then securing it in position by tightening the fastener assembly 103; inserting the deflated bladder 22 into the open end of the culvert pipe 150; inflating the bladder 22 by activating the valve trigger 75 of the gas control valve 73 to allow gas to flow through the handle 62 and into the bladder 22 until the bladder 22 is sufficiently expanded and sealed against the inner surfaces of the culvert pipe 150; releasing the valve trigger 75 to close the gas control valve 73; removing the handle assembly 60 from the bladder assembly 20 by detaching the hose 32 from the slot 89 by pushing the hose release rod 84 down; separating the female 27 and male 106 locking features of the bladder mounting plate 26 and the handle mounting plate 100, and, allowing the bladder assembly 20 to remain within the cul
- the method of removing the deployable plug system 10 from the culvert pipe 150 may be achieved by: attaching the handle assembly 60 to the bladder assembly 20 by engaging the female 27 and male 106 locking features of the bladder mounting plate 26 and the handle mounting plate 100 together; pressing the relief valve 31 to release gas from the bladder 22 to deflate the bladder 22; removing the bladder 22 from the culvert pipe 150 using the handle 62 and grip 66; stowing the deployable plug system 10 by removing the gas canister 78 from the guard cylinder 80; washing contaminants from the deployable plug system 10 using appropriate cleaning chemicals and equipment; removing the handle assembly 60 from the bladder assembly 20 as previously described; and deflating the bladder 22 using the relief valve 31 to enable compact storage of the deployable plug system 10 until needed again.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1507241.6A GB2535812A (en) | 2015-02-25 | 2015-02-25 | Deployable plug system |
CA2914455A CA2914455A1 (en) | 2014-02-26 | 2015-02-25 | Deployable plug system |
US14/689,809 US9416908B2 (en) | 2014-02-26 | 2015-04-17 | Deployable plug system |
US15/208,235 US20160319978A1 (en) | 2014-02-26 | 2016-07-12 | Deployable plug system |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461944822P | 2014-02-26 | 2014-02-26 | |
US61/944,822 | 2014-02-26 | ||
US14/319,623 US9016321B1 (en) | 2014-02-26 | 2014-06-30 | Deployable culvert plug system |
US14/319,623 | 2014-06-30 | ||
CA2876710A CA2876710A1 (en) | 2014-02-26 | 2014-12-30 | Deployable culvert plug system |
CA2876710 | 2014-12-30 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/319,623 Continuation-In-Part US9016321B1 (en) | 2014-02-26 | 2014-06-30 | Deployable culvert plug system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/689,809 Continuation US9416908B2 (en) | 2014-02-26 | 2015-04-17 | Deployable plug system |
Publications (1)
Publication Number | Publication Date |
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WO2015127539A1 true WO2015127539A1 (en) | 2015-09-03 |
Family
ID=54008081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CA2015/000119 WO2015127539A1 (en) | 2014-02-26 | 2015-02-25 | Deployable plug system |
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WO (1) | WO2015127539A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2927609A (en) * | 1957-04-08 | 1960-03-08 | Vanderlans & Sons | Temporary plug for pipes |
US3842864A (en) * | 1971-10-29 | 1974-10-22 | American Gas Ass | Stopping apparatus for pipe lines |
US4076278A (en) * | 1977-01-27 | 1978-02-28 | Societe Nationale Elf Aquitaine (Production) | Laterally engageable flowline connector device |
US4291727A (en) * | 1979-02-28 | 1981-09-29 | Institute Of Gas Technology | Pipeline flow restrictor and process |
US6901966B2 (en) * | 2002-12-13 | 2005-06-07 | Bridgestone Corporation | Seal device for tubular member |
-
2015
- 2015-02-25 WO PCT/CA2015/000119 patent/WO2015127539A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2927609A (en) * | 1957-04-08 | 1960-03-08 | Vanderlans & Sons | Temporary plug for pipes |
US3842864A (en) * | 1971-10-29 | 1974-10-22 | American Gas Ass | Stopping apparatus for pipe lines |
US4076278A (en) * | 1977-01-27 | 1978-02-28 | Societe Nationale Elf Aquitaine (Production) | Laterally engageable flowline connector device |
US4291727A (en) * | 1979-02-28 | 1981-09-29 | Institute Of Gas Technology | Pipeline flow restrictor and process |
US6901966B2 (en) * | 2002-12-13 | 2005-06-07 | Bridgestone Corporation | Seal device for tubular member |
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