EP2773898B1 - System and method for charging and sealing pressure vessels - Google Patents
System and method for charging and sealing pressure vessels Download PDFInfo
- Publication number
- EP2773898B1 EP2773898B1 EP12741156.9A EP12741156A EP2773898B1 EP 2773898 B1 EP2773898 B1 EP 2773898B1 EP 12741156 A EP12741156 A EP 12741156A EP 2773898 B1 EP2773898 B1 EP 2773898B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- boss
- passage
- opening
- seal
- 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.)
- Not-in-force
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
Definitions
- This invention is directed to a pressure or vacuum container, and more particularly to a high pressure gas container having an improved seal for extended shelf life.
- High pressure gas containers find many uses, including in guided missiles.
- the pressurized gas provides a compact source of energy that can be used, for example, for uncaging gyros, cooling detector elements of infrared seekers, moving control surfaces, etc.
- These containers can be very small, making them difficult to fill and seal while maintaining a low leak rate.
- One commonly used fill method involves a small diameter tube which breaches the inner volume of the bottle. After the container is filled with gas through the tube, it is resistance welded in several places and then welded shut at its distal end. This general design has been in use for more than 20 years throughout the industry.
- Metal-to-metal seals can be imperfect, allowing the confined gas to slowly leak out of the container, shortening its shelf life. Since guided missiles are often stored for a long time before they are used, the potential of a shortened shelf life increases the risk that the container will not contain sufficient gas when it is needed, which can render the missile useless. Additionally, preceding seals were often not physically robust to mishandling, were not robust to environmental conditions, and/or were not robust to contamination. Despite these shortcomings, they continued to be used because other techniques were unavailable, did not fit into the available volume, or were more expensive and therefore not suitable for typical qualities of missile subsystems.
- the present invention provides a redundant sealing system that uses both a deformable plug to fill the opening and form an initial seal and a secondary welded seal that can be formed with the addition of a metal cap and an inexpensive orbital welder.
- the present invention provides a seal assembly for a pressure container, where the container has a fill port opening and a boss extending from a surface of the container.
- the boss has a passage aligned with the opening, and the passage has a threaded portion.
- the seal assembly includes a port plug having a nose portion with a surface shaped to mate with the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the passage through the boss to press the nose portion into the fill port opening to form a seal.
- the seal is an initial or first seal and the seal assembly further includes a weld plug, sized to close the distal end of the passage through the boss. The weld plug is welded to the boss to form a second seal.
- the present invention also provides a pressurized container having such a seal assembly for sealing the opening and the passage.
- the present invention also provides a method of charging a container and then sealing the container to provide an extended shelf life.
- the method includes the following steps: (a) providing a container having an opening therein and a boss extending from a surface of the container adjacent the opening, the boss having a passage aligned with the opening in the container, the passage being at least partially threaded with internal threads, a port plug that includes a nose portion for closing the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the boss; (b) inserting the port plug in the passage with the nose portion closer to the opening than the set screw portion; (c) charging the container via the passage; (d) torquing the threaded port plug to advance the port plug in the passage until the nose portion engages the surface of the container adjacent the opening to create the initial or first seal; (e) installing a weld plug into an outer end of the boss to close the passage through the boss; and (f) welding the weld plug to the boss to create a second
- the invention provides a container with a seal assembly, where the container has an opening therein and a boss extending from a surface of the container adjacent the opening.
- the boss has a passage aligned with the opening in the container, and the passage is at least partially threaded with internal threads.
- the container and seal assembly further include means for sealing the opening in the container, adjacent the opening at a proximal end of the passage through the boss, and means for sealing the passage through the boss, adjacent a distal end of the passage through the boss.
- the opening-sealing means includes a port plug having a nose portion with a surface shaped to mate with the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the passage through the boss to press the nose portion into the fill port opening to form a seal.
- the passage-sealing means includes a weld plug sized to close the distal end of the passage, the weld plug being welded to the boss to form a second seal.
- prior pressure containers suffered from a number of problems in providing a hermetic seal. For example, some containers were not robust to mishandling, environmental conditions, or contamination, or the sealing method required a high capital cost to implement. In addition, previous sealing methods for pressure containers often leak excessively over time, were not compact and occupied a large volume, or provided no redundancy in the sealing method.
- the present invention provides a compact, inexpensive, and redundant sealing method.
- the pressure container includes an opening for filling with a pressurized gas or liquid.
- a first element is pressed against an annular surface adjacent the opening and fills and closes the opening itself. In the process, this first element deforms to mate with the annular surface and provide an initial or a first seal.
- a second element holds the first element against the container and is removable to release or replace the first element in the event that this initial seal is ineffective or otherwise compromised.
- a third element is then mounted over the first and second elements and welded in-place to provide a second seal in the event that the initial seal is breached.
- the resulting pressure container is physically small, uses common manufacturing methods, and provides a robust, redundant seal that can be made in the field. Factory conditions are not required to establish either the first seal or the second seal. Moreover, the first seal can be tested before creating the second seal and if the initial first seal fails, the first seal can be reworked before the second seal is applied.
- FIGS. 1 and 2 An exemplary system and method for sealing a container 10 is shown in FIGS. 1 and 2 .
- the container 10, or tank or bottle or other chamber capable of retaining a gas or a liquid, has a fill port opening 14 and a boss 16 extending from a surface of the container 10.
- the fill port opening 14 preferably is cleaning friendly.
- the boss 16 has a passage 20 aligned with the opening 14, and the passage 20 and the opening 14 are sealed by the seal assembly 12.
- An exemplary container 10 is made of steel, such as stainless steel, and has a wall thickness of approximately 0.07 inches (about 1.8 mm).
- An exemplary stainless steel for the container is Carpenter Custom 455 stainless steel, from Carpenter Technology Corporation of Wyomising, Pennsylvania, U.S. Such a container has been found to withstand high internal pressures, up to approximately 25,000 psig (about 172,400 kPa).
- the boss 16 is in effect a short, permanent tube secured to or formed as an integral part of the container 10.
- An exemplary boss 16 is cylindrical and has a diameter of approximately 0.25 inches (about 6.4 mm) and a length or height of about 0.30 (about 7.6 mm) in length.
- the passage 20 through the boss 16 to the fill port opening 14 has a threaded portion 22 at a distal end 24 thereof for receiving a port plug 26.
- the illustrated port plug 26 has a nose portion 30 and a set screw portion 32.
- the nose portion 30 and the set screw portion 32 are separate components, but they could be formed as a single part.
- the nose portion 30 can be made of a malleable material, such as a plastic or a metal, and in the illustrated embodiment the nose-portion 30 has a generally cone-like shape. Other shapes can work as well.
- An exemplary nose portion 30 is made of brass, such as brass 360.
- the illustrated nose portion 30 also has a support post or shank 34 extending from a base or distal end of the cone-like shape.
- the support post 34 extends into a socket 36 in the set screw portion 32.
- the support post 34 preferably, but not necessarily, is partially crushed or swaged to permanently capture the nose portion 30 in the set screw portion 32 of the port plug 26. This enables the nose portion 30 to move in the radial direction relative to the set screw portion 32 for self alignment when secured against the annular surface on the container 10.
- the set screw portion 32 has external threads 40 for engaging the threaded portion 22 on the inner surface of the passage 20 through the boss 16.
- a proximal end 42 of the set screw portion 32 includes a socket 44 for receiving the support post 34 at the base of the nose portion 30.
- This hollowed-out set screw portion 32 can facilitate swaging the support post 34 portion of the nose portion 30 ( FIG. 15 ), so that it mushrooms to an increased width and thus is held behind a shoulder 47 in the set screw portion 32.
- An example of a port plug 26 with a swaged support post 34 is shown in FIG. 16 .
- a distal end 46 of the set screw portion 32 includes a driving feature 50 for engaging and driving the set screw portion 32 along the threaded portion 22 of the passage 20 through the boss 16.
- a driving feature 50 includes a hexagonal socket formed in a distal end of the set screw portion 32.
- An exemplary socket 50 is sized to receive a nominal 1/16 inch (approximately 1.6 mm) hexagonal wrench or key.
- Other types of driving features, such as for receiving a screwdriver, are alternative options.
- An exemplary set screw portion 32 is made of stainless steel and, more particularly, Nitronic ® 60, available from AK Steel Corporation of West Chester, Ohio, United States. Nitronic ® 60 is an austenitic stainless steel.
- the illustrated set screw portion 32 is tubular, and the socket 36 is formed by a hole or passage that extends part or all the way through the set screw portion 32, facilitating the delivery of pressurized gas to the container 10 when the port plug 26 is in the passage 20 in the boss 16.
- a slot 48 in the side of the set screw portion 26 provides another path for gas to flow past the set screw portion 26 and into the container 10.
- the port plug 26 inserted in the passage in the boss 16 either before or after charging with or evacuating the gas, is advanced by torqueing the set screw portion 32 to press the nose portion 30 against the surface of the container 10 adjacent the fill port opening 14. Since the nose portion 30 is made of a malleable material, continuing to torque the set screw portion 32 deforms the nose portion 30 to mate with that surface adjacent the fill port opening 14, as shown in FIG. 2 . This creates an initial seal. This initial seal is reworkable if testing reveals that the seal is leaking. This arrangement also places the threads on the set screw portion 32 of the port plug 26 and the passage 20 in the boss 16 outside the sealed container, on the dirty side of the first seal.
- a weld plug 60 is placed over the distal end 24 of the boss 16 and welded in place to provide a second seal, redundant to the first seal. Because the port plug 26 is entirely within the passage 20 through the boss 16, the weld plug 60 and the boss 16 form a hermetically-sealed chamber over both the port plug 26 and the fill port opening 14. So even if the port plug seal fails, the container 10 will remain sealed by the weld plug 60 and the weld holding it in place.
- the weld plug 60 typically is made of steel, such as the same steel as the pressure container 10.
- An exemplary weld plug is approximately 0.060 inches (about 1.5 mm) thick.
- the weld can be formed with an orbital TIG welder, for example.
- Such welders are commonly available, generally are small, portable, simple to use, and relatively inexpensive. More importantly, they yield consistent-quality welds with simple operation. Consequently, orbital welders can be used in the field and do not require the precise conditions of a factory environment to form the weld seal.
- Other types of welding devices can be used to weld the weld plug 60 to the boss 16, however, including laser and electron-beam welders.
- the weld plug 60 can include a shank or shaft 62 that is received in the port plug 26 and extends through the socket 36 in the set screw portion 32 of the port plug 26.
- the illustrated port plug 60 has a hexagonal shaft 62 that is received in the hexagonal socket 50 in the distal end of the set screw portion 32.
- FIGS. 6-10 A sequence of operation of a sealing method provided in accordance with the present invention is shown in FIGS. 6-10.
- FIG. 6 illustrates a pressure container 10 and the boss 16 extending from the pressure container 10 with the passage therethrough to the fill port opening 14.
- the port plug 26 is inserted into the passage 20 in the boss 16. This can be done manually or automatically.
- the pressure container 10 can then be mounted into a fixture or otherwise connected or coupled to a fitting to fill the pressure tank with a pressurized gas or liquid 66 (or alternatively evacuating fluid from the container 10).
- the fixture or other coupling generally includes a tool or mechanism for torqueing the port plug 26 and advancing the set screw portion 32 to deform the nose portion 30 of the port plug 26 against the surface of the pressure container 10 adjacent the fill port opening 14, as shown in FIG. 9 .
- This forms the initial or first seal.
- This seal can then be tested to determine whether gas leaks through that seal and whether the seal is secure. This can be done through the same coupling used to fill the pressure container 10 or through a separate mechanism or fixture. If the seal leaks, or otherwise fails the testing, the port plug 26 can be removed and replaced or reinstalled.
- the pressure container 10 has been removed from the fixture or coupling and a weld plug 60 is installed at the distal end 24 of the passage 20 through the boss 16.
- the container 10 and seal assembly 12 can then be installed into an orbital welder and the weld plug 60 is welded to the boss 16 to complete the second, redundant seal for the container 10.
- FIGS. 11-15 show alternative designs for the weld plug 60 which will be briefly described in the following paragraphs.
- a weld plug 70 is received within the passage 20 through the boss 16 and is welded in place from an axial end of the boss 16.
- the weld plug 72 may include a threaded portion 74 for engaging the threaded portion 22 in the passage 20 to secure the weld plug 72 in place before it is welded.
- the weld plug 72 also includes a means for torqueing the weld plug 72 into the passage 20, such as by a hexagonal socket 76.
- a distal end of the weld plug 72 is again provided with an axial weld to secure the weld plug 72 in place.
- the weld plug 72 may extend into the passage 20 a sufficient distance to engage the distal end 46 of the set screw portion 32 of the port plug 26 and thus prevent the port plug 26 from loosening due to vibration or handling of the pressure container 10.
- the weld plug may be provided with a radial weld, as was the case with the embodiments previously shown in FIGS. 1 and 10 .
- the embodiment shown in FIG. 13 is similar to that shown in FIG. 10 , and like FIG. 11 the weld plug 80 is only held in place by the fit of a proximal portion 82 of the weld plug 80 that extends into the passage 20 through the boss 16.
- the weld plug 80 in this case is primarily held in place by the weld itself.
- Another embodiment comparable to that of FIG. 12 , has a threaded portion 84 that extends into the passage 20 to secure the weld plug 86 in place until it is welded. In contrast to FIG. 12 , however, in this case the weld plug 86 extends beyond the distal end 24 of the boss 16 and is held in place with a radial weld.
- the weld plug designs shown in FIGS. 12 and 14 included a threaded portion that extended into the passage 20 through the boss 16. Since the passage 20 is already threaded at its distal end 24 to receive the set screw portion 32 of the port plug 26 these designs require no additional machining.
- An alternative is shown in FIG. 15 .
- the port plug 90 extends over an outer surface 92 of the boss 16 and is radially welded to the outer surface.
- This design also includes an exterior thread on the boss 16 that engages an interior threaded portion 96 on the port plug 90, similar to a screw-cap for a bottle. These threaded portions 94 and 96 may be omitted, however, and the weld plug 90 or cap can be welded in place without a threaded connection.
- weld plugs for closing the passage through the boss and sealing the port plug in the passage are contemplated within the scope of the present invention.
- the weld may be an axial weld, a radial weld, or a combination of the two, in the form of a weld at an angle, such as between parts meeting at a 45 degree angle relative to an axis of the boss 16.
- the welds used to seal the weld plug to the boss can be made using other methods than an orbital TIG welder, such as a laser, electron-beam, or other welding technique.
- the present invention provides a redundant seal for a high pressure gas container 10.
- First a port plug 26 seats and then deforms a nose 30 portion adjacent a surface surrounding a fill port opening 14 to establish a first seal.
- the set screw portion 32 both advances the nose portion 30 against the opening 14 and holds the deformed nose 30 in place.
- a weld plug 60 then caps or covers the port plug 26 and the passage 20 through the boss 16 and is welded in place to provide a second seal for any gas that might escape past the port plug 26.
- the present invention allows the first sealing elements, the port plug 26 and particularly the nose portion 30, to be reworked or replaced if the first seal is tested and fails the test, before the weld plug 60 is added to form the second seal.
- An exemplary seal assembly provided by the invention has been found to seal over 40,000 psig (about 276,000 kPa) prior to burst.
- the resulting seal assembly 12 is robust to mishandling, the first seal is protected from environmental conditions and contamination, and the first and second seals can be formed with inexpensive tools that can be used outside a factory setting, in the field. For example, in an air-conditioning maintenance and repair situation, as well as for supplying gas for a missile.
- Such an exemplary seal assembly is expected to have an approximately 14 year life, at least, with no more than 200 psig (about 1,400 kPa) leak over that 14 year period.
- the present invention provides a redundant sealing system includes a seal assembly 12 for a pressurized container 10, where the container 10 has a fill port opening 14 and a boss 16 extending from a surface of the container 10.
- the boss 16 has a passage 20 aligned with the opening 14, and the passage 20 has a threaded portion 22.
- the seal assembly 12 includes a port plug 26 having a nose portion 30 with a surface shaped to mate with the fill port opening 14 in the container 10 and a set screw portion 32 with external threads for engaging the threaded portion 22 of the passage 20 through the boss 16 to press the nose portion 30 into the fill port opening 14 to form a first seal.
- the seal assembly 12 further includes a weld plug 60 sized to close the distal end of the passage 20 through the boss 16, the weld plug 60 is welded to the boss 16 to form a second seal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Description
- This invention is directed to a pressure or vacuum container, and more particularly to a high pressure gas container having an improved seal for extended shelf life.
- High pressure gas containers find many uses, including in guided missiles. In a missile, the pressurized gas provides a compact source of energy that can be used, for example, for uncaging gyros, cooling detector elements of infrared seekers, moving control surfaces, etc. These containers can be very small, making them difficult to fill and seal while maintaining a low leak rate.
- One commonly used fill method involves a small diameter tube which breaches the inner volume of the bottle. After the container is filled with gas through the tube, it is resistance welded in several places and then welded shut at its distal end. This general design has been in use for more than 20 years throughout the industry.
- Other preceding pressurized containers for missiles relied principally on a metal-to-metal seal to confine the gas within the container. Some of these seals depended upon a threaded union, while others have used a pressed in plug. Both of these designs require an extremely good surface finish to obtain a seal that will retain the gas in the container. Other seals were formed by molding a soft metal over the opening of the container.
- Prior art document
U.S. Patent No. 3487442 , corresponding toDE-U-6840730 , discloses a flexible thread system for use on screw type closure structures for high pressure vessels and the like wherein a gullet, preferably tapered, is provided below the normal root portion of one, or both, of the mating male and female threads of the screw type closure, the gullet or gullets enabling the thread cross section to deflect as a lever to enable the closure threads to be uniformly stressed and to accommodate the pressurized stress patterns of the vessel system. - Metal-to-metal seals can be imperfect, allowing the confined gas to slowly leak out of the container, shortening its shelf life. Since guided missiles are often stored for a long time before they are used, the potential of a shortened shelf life increases the risk that the container will not contain sufficient gas when it is needed, which can render the missile useless. Additionally, preceding seals were often not physically robust to mishandling, were not robust to environmental conditions, and/or were not robust to contamination. Despite these shortcomings, they continued to be used because other techniques were unavailable, did not fit into the available volume, or were more expensive and therefore not suitable for typical qualities of missile subsystems.
- The present invention provides a redundant sealing system that uses both a deformable plug to fill the opening and form an initial seal and a secondary welded seal that can be formed with the addition of a metal cap and an inexpensive orbital welder.
- More particularly, the present invention provides a seal assembly for a pressure container, where the container has a fill port opening and a boss extending from a surface of the container. The boss has a passage aligned with the opening, and the passage has a threaded portion. The seal assembly includes a port plug having a nose portion with a surface shaped to mate with the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the passage through the boss to press the nose portion into the fill port opening to form a seal. The seal is an initial or first seal and the seal assembly further includes a weld plug, sized to close the distal end of the passage through the boss. The weld plug is welded to the boss to form a second seal. Naturally, the present invention also provides a pressurized container having such a seal assembly for sealing the opening and the passage.
- The present invention also provides a method of charging a container and then sealing the container to provide an extended shelf life. The method includes the following steps: (a) providing a container having an opening therein and a boss extending from a surface of the container adjacent the opening, the boss having a passage aligned with the opening in the container, the passage being at least partially threaded with internal threads, a port plug that includes a nose portion for closing the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the boss; (b) inserting the port plug in the passage with the nose portion closer to the opening than the set screw portion; (c) charging the container via the passage; (d) torquing the threaded port plug to advance the port plug in the passage until the nose portion engages the surface of the container adjacent the opening to create the initial or first seal; (e) installing a weld plug into an outer end of the boss to close the passage through the boss; and (f) welding the weld plug to the boss to create a second seal.
- According to another aspect of the invention, the invention provides a container with a seal assembly, where the container has an opening therein and a boss extending from a surface of the container adjacent the opening. The boss has a passage aligned with the opening in the container, and the passage is at least partially threaded with internal threads. The container and seal assembly further include means for sealing the opening in the container, adjacent the opening at a proximal end of the passage through the boss, and means for sealing the passage through the boss, adjacent a distal end of the passage through the boss.
- In an exemplary embodiment, the opening-sealing means includes a port plug having a nose portion with a surface shaped to mate with the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the passage through the boss to press the nose portion into the fill port opening to form a seal. And the passage-sealing means includes a weld plug sized to close the distal end of the passage, the weld plug being welded to the boss to form a second seal.
- The foregoing and other features of the invention are hereinafter fully described and particularly pointed out in the claims, the following description and annexed drawings setting forth in detail certain illustrative embodiments of the invention, these embodiments being indicative, however, of but a few of the various ways in which the principles of the invention may be employed.
-
-
FIG. 1 is an exploded perspective view of a container provided in accordance with the present invention illustrating the sealing components. -
FIG. 2 is a cross-sectional view of the completed assembly of the components shown inFIG. 1 . -
FIG. 3 is a perspective view of the port plug as shown inFIG. 1 . -
FIG. 4 is a cross-sectional view of the port plug ofFIG. 3 . -
FIG. 5 is a perspective view of a weld plug as shown inFIG. 1 . -
FIGS. 6-10 are sequential views of the port assembly and sealing mechanisms for the container as shown inFIG. 2 illustrating the assembly and use process. -
FIGS. 11-15 illustrate alternative embodiments of a weld plug provided in accordance with the present invention. -
FIG. 16 illustrates an alternative port plug provided in accordance with the present invention. - As discussed above, prior pressure containers suffered from a number of problems in providing a hermetic seal. For example, some containers were not robust to mishandling, environmental conditions, or contamination, or the sealing method required a high capital cost to implement. In addition, previous sealing methods for pressure containers often leak excessively over time, were not compact and occupied a large volume, or provided no redundancy in the sealing method.
- In contrast, the present invention provides a compact, inexpensive, and redundant sealing method. The pressure container includes an opening for filling with a pressurized gas or liquid. A first element is pressed against an annular surface adjacent the opening and fills and closes the opening itself. In the process, this first element deforms to mate with the annular surface and provide an initial or a first seal. A second element holds the first element against the container and is removable to release or replace the first element in the event that this initial seal is ineffective or otherwise compromised. A third element is then mounted over the first and second elements and welded in-place to provide a second seal in the event that the initial seal is breached.
- The resulting pressure container is physically small, uses common manufacturing methods, and provides a robust, redundant seal that can be made in the field. Factory conditions are not required to establish either the first seal or the second seal. Moreover, the first seal can be tested before creating the second seal and if the initial first seal fails, the first seal can be reworked before the second seal is applied.
- An exemplary system and method for sealing a
container 10 is shown inFIGS. 1 and2 . Thecontainer 10, or tank or bottle or other chamber capable of retaining a gas or a liquid, has a fill port opening 14 and aboss 16 extending from a surface of thecontainer 10. The fill port opening 14 preferably is cleaning friendly. Theboss 16 has apassage 20 aligned with theopening 14, and thepassage 20 and theopening 14 are sealed by theseal assembly 12. - An
exemplary container 10 is made of steel, such as stainless steel, and has a wall thickness of approximately 0.07 inches (about 1.8 mm). An exemplary stainless steel for the container is Carpenter Custom 455 stainless steel, from Carpenter Technology Corporation of Wyomising, Pennsylvania, U.S. Such a container has been found to withstand high internal pressures, up to approximately 25,000 psig (about 172,400 kPa). Theboss 16 is in effect a short, permanent tube secured to or formed as an integral part of thecontainer 10. Anexemplary boss 16 is cylindrical and has a diameter of approximately 0.25 inches (about 6.4 mm) and a length or height of about 0.30 (about 7.6 mm) in length. - The
passage 20 through theboss 16 to the fill port opening 14 has a threadedportion 22 at adistal end 24 thereof for receiving aport plug 26. The illustratedport plug 26 has anose portion 30 and aset screw portion 32. In the illustrated embodiment thenose portion 30 and theset screw portion 32 are separate components, but they could be formed as a single part. Thenose portion 30 can be made of a malleable material, such as a plastic or a metal, and in the illustrated embodiment the nose-portion 30 has a generally cone-like shape. Other shapes can work as well. Anexemplary nose portion 30 is made of brass, such as brass 360. The illustratednose portion 30 also has a support post orshank 34 extending from a base or distal end of the cone-like shape. - Referring now to
FIGS. 3 and 4 as well, thesupport post 34 extends into asocket 36 in theset screw portion 32. Thesupport post 34 preferably, but not necessarily, is partially crushed or swaged to permanently capture thenose portion 30 in theset screw portion 32 of theport plug 26. This enables thenose portion 30 to move in the radial direction relative to theset screw portion 32 for self alignment when secured against the annular surface on thecontainer 10. Theset screw portion 32 hasexternal threads 40 for engaging the threadedportion 22 on the inner surface of thepassage 20 through theboss 16. Aproximal end 42 of theset screw portion 32 includes asocket 44 for receiving thesupport post 34 at the base of thenose portion 30. This hollowed-outset screw portion 32 can facilitate swaging thesupport post 34 portion of the nose portion 30 (FIG. 15 ), so that it mushrooms to an increased width and thus is held behind ashoulder 47 in theset screw portion 32. An example of aport plug 26 with a swagedsupport post 34 is shown inFIG. 16 . - A
distal end 46 of theset screw portion 32 includes a drivingfeature 50 for engaging and driving theset screw portion 32 along the threadedportion 22 of thepassage 20 through theboss 16. For example, anexemplary driving feature 50 includes a hexagonal socket formed in a distal end of theset screw portion 32. Anexemplary socket 50 is sized to receive a nominal 1/16 inch (approximately 1.6 mm) hexagonal wrench or key. Other types of driving features, such as for receiving a screwdriver, are alternative options. An exemplaryset screw portion 32 is made of stainless steel and, more particularly,Nitronic ® 60, available from AK Steel Corporation of West Chester, Ohio, United States.Nitronic ® 60 is an austenitic stainless steel. The illustratedset screw portion 32 is tubular, and thesocket 36 is formed by a hole or passage that extends part or all the way through theset screw portion 32, facilitating the delivery of pressurized gas to thecontainer 10 when theport plug 26 is in thepassage 20 in theboss 16. Aslot 48 in the side of theset screw portion 26 provides another path for gas to flow past theset screw portion 26 and into thecontainer 10. - After the
container 10 is filled with pressurized gas or evacuated, theport plug 26, inserted in the passage in theboss 16 either before or after charging with or evacuating the gas, is advanced by torqueing theset screw portion 32 to press thenose portion 30 against the surface of thecontainer 10 adjacent thefill port opening 14. Since thenose portion 30 is made of a malleable material, continuing to torque theset screw portion 32 deforms thenose portion 30 to mate with that surface adjacent thefill port opening 14, as shown inFIG. 2 . This creates an initial seal. This initial seal is reworkable if testing reveals that the seal is leaking. This arrangement also places the threads on theset screw portion 32 of theport plug 26 and thepassage 20 in theboss 16 outside the sealed container, on the dirty side of the first seal. - If testing shows that the first seal has good integrity, then a
weld plug 60 is placed over thedistal end 24 of theboss 16 and welded in place to provide a second seal, redundant to the first seal. Because theport plug 26 is entirely within thepassage 20 through theboss 16, theweld plug 60 and theboss 16 form a hermetically-sealed chamber over both theport plug 26 and thefill port opening 14. So even if the port plug seal fails, thecontainer 10 will remain sealed by theweld plug 60 and the weld holding it in place. The weld plug 60 typically is made of steel, such as the same steel as thepressure container 10. An exemplary weld plug is approximately 0.060 inches (about 1.5 mm) thick. The weld can be formed with an orbital TIG welder, for example. Such welders are commonly available, generally are small, portable, simple to use, and relatively inexpensive. More importantly, they yield consistent-quality welds with simple operation. Consequently, orbital welders can be used in the field and do not require the precise conditions of a factory environment to form the weld seal. Other types of welding devices can be used to weld the weld plug 60 to theboss 16, however, including laser and electron-beam welders. - As shown in
FIGS. 2 and5 , theweld plug 60 can include a shank orshaft 62 that is received in theport plug 26 and extends through thesocket 36 in theset screw portion 32 of theport plug 26. The illustratedport plug 60 has ahexagonal shaft 62 that is received in thehexagonal socket 50 in the distal end of theset screw portion 32. Finally, once theweld plug 60 is welded in place, the engagement of theport plug 26 with theset screw portion 32 prevents theset screw portion 32 from rotating over time as a result of vibration, handling, or any other reason. Theshaft 62 also substantially fills the volume contained between theport plug 26 and theweld plug 60, thereby minimizing the volume of gas within theboss 16. This further helps to ensure a good welded, second seal. - A sequence of operation of a sealing method provided in accordance with the present invention is shown in
FIGS. 6-10. FIG. 6 illustrates apressure container 10 and theboss 16 extending from thepressure container 10 with the passage therethrough to thefill port opening 14. InFIG. 7 , theport plug 26 is inserted into thepassage 20 in theboss 16. This can be done manually or automatically. As shown inFIG. 8 , thepressure container 10 can then be mounted into a fixture or otherwise connected or coupled to a fitting to fill the pressure tank with a pressurized gas or liquid 66 (or alternatively evacuating fluid from the container 10). The fixture or other coupling generally includes a tool or mechanism for torqueing theport plug 26 and advancing theset screw portion 32 to deform thenose portion 30 of theport plug 26 against the surface of thepressure container 10 adjacent thefill port opening 14, as shown inFIG. 9 . This forms the initial or first seal. This seal can then be tested to determine whether gas leaks through that seal and whether the seal is secure. This can be done through the same coupling used to fill thepressure container 10 or through a separate mechanism or fixture. If the seal leaks, or otherwise fails the testing, theport plug 26 can be removed and replaced or reinstalled. - As shown in
FIG. 10 , thepressure container 10 has been removed from the fixture or coupling and aweld plug 60 is installed at thedistal end 24 of thepassage 20 through theboss 16. Thecontainer 10 andseal assembly 12 can then be installed into an orbital welder and theweld plug 60 is welded to theboss 16 to complete the second, redundant seal for thecontainer 10. - Although only one type of weld plug 60 has been shown so far, additional designs also are contemplated within the scope of the present invention.
FIGS. 11-15 show alternative designs for the weld plug 60 which will be briefly described in the following paragraphs. - In
FIG. 11 aweld plug 70 is received within thepassage 20 through theboss 16 and is welded in place from an axial end of theboss 16. In this design, the only thing holding the weld plug 70 in place is the fit of theweld plug 70 within thepassage 20, preferably a tight fit, and the weld itself. Alternatively, as shown inFIG. 12 , theweld plug 72 may include a threadedportion 74 for engaging the threadedportion 22 in thepassage 20 to secure the weld plug 72 in place before it is welded. The weld plug 72 also includes a means for torqueing the weld plug 72 into thepassage 20, such as by ahexagonal socket 76. A distal end of theweld plug 72 is again provided with an axial weld to secure the weld plug 72 in place. In this design, theweld plug 72 may extend into the passage 20 a sufficient distance to engage thedistal end 46 of theset screw portion 32 of theport plug 26 and thus prevent the port plug 26 from loosening due to vibration or handling of thepressure container 10. - Instead of an axial weld, the weld plug may be provided with a radial weld, as was the case with the embodiments previously shown in
FIGS. 1 and10 . The embodiment shown inFIG. 13 is similar to that shown inFIG. 10 , and likeFIG. 11 theweld plug 80 is only held in place by the fit of aproximal portion 82 of the weld plug 80 that extends into thepassage 20 through theboss 16. The weld plug 80 in this case is primarily held in place by the weld itself. Another embodiment, comparable to that ofFIG. 12 , has a threadedportion 84 that extends into thepassage 20 to secure the weld plug 86 in place until it is welded. In contrast toFIG. 12 , however, in this case theweld plug 86 extends beyond thedistal end 24 of theboss 16 and is held in place with a radial weld. - The weld plug designs shown in
FIGS. 12 and14 included a threaded portion that extended into thepassage 20 through theboss 16. Since thepassage 20 is already threaded at itsdistal end 24 to receive theset screw portion 32 of theport plug 26 these designs require no additional machining. An alternative is shown inFIG. 15 . In this case, theport plug 90 extends over anouter surface 92 of theboss 16 and is radially welded to the outer surface. This design also includes an exterior thread on theboss 16 that engages an interior threadedportion 96 on theport plug 90, similar to a screw-cap for a bottle. These threadedportions boss 16. Additionally, the welds used to seal the weld plug to the boss can be made using other methods than an orbital TIG welder, such as a laser, electron-beam, or other welding technique. - Thus the present invention provides a redundant seal for a high
pressure gas container 10. First aport plug 26 seats and then deforms anose 30 portion adjacent a surface surrounding afill port opening 14 to establish a first seal. Theset screw portion 32 both advances thenose portion 30 against theopening 14 and holds thedeformed nose 30 in place. Aweld plug 60 then caps or covers theport plug 26 and thepassage 20 through theboss 16 and is welded in place to provide a second seal for any gas that might escape past theport plug 26. - In addition, the present invention allows the first sealing elements, the
port plug 26 and particularly thenose portion 30, to be reworked or replaced if the first seal is tested and fails the test, before theweld plug 60 is added to form the second seal. An exemplary seal assembly provided by the invention has been found to seal over 40,000 psig (about 276,000 kPa) prior to burst. The resultingseal assembly 12 is robust to mishandling, the first seal is protected from environmental conditions and contamination, and the first and second seals can be formed with inexpensive tools that can be used outside a factory setting, in the field. For example, in an air-conditioning maintenance and repair situation, as well as for supplying gas for a missile. Such an exemplary seal assembly is expected to have an approximately 14 year life, at least, with no more than 200 psig (about 1,400 kPa) leak over that 14 year period. - In summary, the present invention provides a redundant sealing system includes a
seal assembly 12 for apressurized container 10, where thecontainer 10 has afill port opening 14 and aboss 16 extending from a surface of thecontainer 10. Theboss 16 has apassage 20 aligned with theopening 14, and thepassage 20 has a threadedportion 22. Theseal assembly 12 includes aport plug 26 having anose portion 30 with a surface shaped to mate with thefill port opening 14 in thecontainer 10 and aset screw portion 32 with external threads for engaging the threadedportion 22 of thepassage 20 through theboss 16 to press thenose portion 30 into thefill port opening 14 to form a first seal. Theseal assembly 12 further includes aweld plug 60 sized to close the distal end of thepassage 20 through theboss 16, theweld plug 60 is welded to theboss 16 to form a second seal.
Claims (14)
- A seal assembly (12) for a pressurized container (10), the container (10) having a fill port opening (14) and a boss (16) extending from a surface of the container (10), the boss (16) having a passage (20) aligned with the opening (14), the passage (20) having a threaded portion (22), the seal assembly (12) comprising a port plug (26) having a nose portion (30) with a surface shaped to mate with the fill port opening (14) in the container (10) and a set screw portion (32) with external threads (40) for engaging the threaded portion (22) of the passage (20) through the boss (16) to press the nose portion (30) into the fill port opening (14) to form a seal, whereby the nose portion (30) has a cone-like shape with a proximal end that is smaller than the opening (14) and a distal end that is larger than the opening (14).
- A seal assembly (12) as set forth in claim 1, where the nose portion (30) is a malleable material.
- A seal assembly (12) as set forth in claim 2, where the nose portion (30) is brass.
- A seal assembly (12) as set forth in any of claims 1 to 3, where the set screw portion (32) has a drive means (50) at a distal end (46) for engaging the set screw portion (32) and advancing or retracting the set screw portion (32) in the passage (20) relative to the boss (16).
- A seal assembly (12) as set forth in claim 1, where the seal is a first seal and further comprising a weld plug (60; 70; 72; 80; 86) sized to close the distal end of the passage (20) through the boss (16), the weld plug (60; 70; 72; 80; 86) being welded to the boss (16) to form a second seal.
- A seal assembly (12) as set forth in any of claims 1 to 5, where the weld is one of an axial weld and a radial weld or a combination of the two.
- A seal assembly (12) as set forth in any of claims 1 to 6, where the boss (16) is generally tubular.
- A pressurized container (10), comprising a fill port opening (14) and a boss (16) extending from a surface of the container (10), the boss (16) having a passage (20) aligned with the opening (14), the passage (20) having a threaded portion (22); and a seal assembly (12) as set forth in any of claims 1 to 6 for sealing the opening (14) and the passage (20).
- A method of charging a container with gas or liquid and then sealing the container, comprising the following steps:(a) providing a container having an opening therein and a boss extending from a surface of the container adjacent the opening, the boss having a passage aligned with the opening in the container, the passage being at least partially threaded with internal threads, a port plug that includes a nose portion for closing the fill port opening in the container and a set screw portion with external threads for engaging the threaded portion of the boss;(b) inserting the port plug in the passage with the nose portion closer to the opening than the set screw portion;(c) charging the container with a pressurized gas or liquid via the passage;(d) torquing the threaded port plug to advance the port plug in the passage until the nose portion engages the surface of the container adjacent the opening to create a first seal;(e) installing a weld plug into an outer end of the boss to close the passage through the boss; and(f) welding the weld plug to the boss to create a second seal.
- A method as set forth in claim 9, where the torquing step includes deforming the nose portion to mate with a surface of the container adjacent the opening.
- A method as set forth in any of claims 9 or 10, where the welding step includes forming at least one of a radial weld or an axial weld or a combination of the two.
- A method as set forth in any of claims 9 to 11, comprising the step of testing the integrity of the first seal before the step of installing the weld plug.
- A gas container (10) with a seal assembly according to claims 1-7, the container (10) having an opening (14) therein and a boss (16) extending from a surface of the container (10) adjacent the opening (14), the boss (16) having a passage (20) aligned with the opening (14) in the container (10), the passage (20) being at least partially threaded with internal threads; means (26, 32) for sealing the opening (14) in the container (10), adjacent the opening (14) at a proximal end of the passage (20) through the boss (16); and means (60; 70; 72; 80; 86) for sealing the passage (20) through the boss (16), adjacent a distal end of the passage (20) through the boss (16).
- A container (10) and seal assembly (12) as set forth in claim 13, where the opening-sealing means (26, 32) includes a port plug (26) having a nose portion (30) with a surface shaped to mate with the fill port opening (14) in the container (10) and a set screw portion (32) with external threads (40) for engaging the threaded portion (22) of the passage (20) through the boss (16) to press the nose portion (30) into the fill port opening (14) to form a seal, and the passage-sealing means (60; 70; 72; 80; 86) includes a weld plug (60; 70; 72; 80; 86) sized to close the distal end of the passage (20), the weld plug (60; 70; 72; 80; 86) being welded to the boss (16) to form a second seal.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/289,400 US20130112691A1 (en) | 2011-11-04 | 2011-11-04 | System and method for charging and sealing pressure vessels |
PCT/US2012/045914 WO2013066430A1 (en) | 2011-11-04 | 2012-07-09 | System and method for charging and sealing pressure vessels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2773898A1 EP2773898A1 (en) | 2014-09-10 |
EP2773898B1 true EP2773898B1 (en) | 2016-01-06 |
Family
ID=46598947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12741156.9A Not-in-force EP2773898B1 (en) | 2011-11-04 | 2012-07-09 | System and method for charging and sealing pressure vessels |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130112691A1 (en) |
EP (1) | EP2773898B1 (en) |
JP (1) | JP2014532849A (en) |
WO (1) | WO2013066430A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2834872C (en) | 2011-06-02 | 2018-03-27 | Australian Nuclear Science And Technology Organisation | Filling container and method for storing hazardous waste material |
JP6781892B2 (en) | 2016-02-12 | 2020-11-11 | 株式会社日本製鋼所 | Accumulation container |
WO2020046685A1 (en) * | 2018-08-24 | 2020-03-05 | Bellowstech, Llc | Charging port for pressure vessel |
FR3119008B3 (en) * | 2021-01-15 | 2022-12-16 | Air Liquide | Pressurized fluid storage device, filling apparatus and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3487442A (en) * | 1968-03-04 | 1969-12-30 | Nat Forge Co | Flexible thread systems for high pressure vessels and the like |
US5832947A (en) * | 1997-01-17 | 1998-11-10 | Niemczyk; Andrew | Gas shut-off and pressure relief valve for a high pressure gas vessel |
US6742538B1 (en) * | 2002-04-19 | 2004-06-01 | Western Valve | Method and apparatus for orbital and seal welded relief device on a compressed gas cylinder |
US8413329B2 (en) * | 2005-08-01 | 2013-04-09 | Illinois Tool Works Inc. | Compressed gas cartridge lance housing |
US7950409B2 (en) * | 2007-01-30 | 2011-05-31 | Fike Corporation | Rupture disc assembly that withstands much higher back pressures than actuation pressure |
WO2010129638A2 (en) * | 2009-05-08 | 2010-11-11 | Daas Ip Management, Llc | Burst disk assembly |
-
2011
- 2011-11-04 US US13/289,400 patent/US20130112691A1/en not_active Abandoned
-
2012
- 2012-07-09 EP EP12741156.9A patent/EP2773898B1/en not_active Not-in-force
- 2012-07-09 WO PCT/US2012/045914 patent/WO2013066430A1/en active Application Filing
- 2012-07-09 JP JP2014539930A patent/JP2014532849A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2014532849A (en) | 2014-12-08 |
WO2013066430A1 (en) | 2013-05-10 |
EP2773898A1 (en) | 2014-09-10 |
US20130112691A1 (en) | 2013-05-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2773898B1 (en) | System and method for charging and sealing pressure vessels | |
KR100987334B1 (en) | Tube fitting structure which is possible to check the tightening amount | |
US20100001222A1 (en) | Valve, namely for bottles for ultra-high purity gas | |
US7631664B1 (en) | Threaded expansion plugs | |
JPH0348393B2 (en) | ||
CN101573550A (en) | Pull-up by torque fitting | |
US6866057B1 (en) | Thermal-pressure relief device | |
KR20100092982A (en) | Screw connection | |
US5762091A (en) | Thermal-pressure relief device | |
US5908044A (en) | Quadra-seal method and apparatus for operations upon fluid pressure containment bodies | |
JP4948570B2 (en) | High pressure pipe closing jig | |
JP5895330B2 (en) | Sealing structure for high pressure pipe joints | |
US20140374417A1 (en) | Filling port structure for pressure fluid | |
CN102563060B (en) | Compressed gas system, manual valve assembly, and manual valve piston with isochoric thermal isolation zone | |
US20150204482A1 (en) | Gas supply device | |
US20220260213A1 (en) | Tank device for storing a gaseous medium | |
JP2010060071A (en) | Branching joint | |
US8292680B1 (en) | External brass seal for the LRU-16/P life raft | |
CN110967140B (en) | Transmitter flange | |
US7455010B2 (en) | Expanded barrel hydraulic cylinder assembly | |
US4538395A (en) | Method of charging and hermetically sealing a high pressure gas vessel | |
US10867711B2 (en) | Pressure boundary bolted anti-ejection device | |
WO2007056865A1 (en) | Valve assembly | |
JP2005016709A (en) | Gas cylinder, valve device for the same, and connecting structure of gas cylinder and valve device | |
JP2011038622A (en) | Pack type valve and fire extinguishing device equipped with the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140416 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20150518 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAR | Information related to intention to grant a patent recorded |
Free format text: ORIGINAL CODE: EPIDOSNIGR71 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
INTG | Intention to grant announced |
Effective date: 20151106 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 769151 Country of ref document: AT Kind code of ref document: T Effective date: 20160215 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602012013664 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20160106 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 769151 Country of ref document: AT Kind code of ref document: T Effective date: 20160106 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160407 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160506 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160506 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602012013664 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
26N | No opposition filed |
Effective date: 20161007 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160731 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160709 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160709 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20120709 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160731 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160106 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20180626 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20180801 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20190619 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20190702 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602012013664 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190709 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190709 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200709 |