WO2003100305A1 - Combination thermal and pressure relief valve - Google Patents
Combination thermal and pressure relief valve Download PDFInfo
- Publication number
- WO2003100305A1 WO2003100305A1 PCT/US2003/015655 US0315655W WO03100305A1 WO 2003100305 A1 WO2003100305 A1 WO 2003100305A1 US 0315655 W US0315655 W US 0315655W WO 03100305 A1 WO03100305 A1 WO 03100305A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermal
- housing
- relief valve
- pressure relief
- pathway
- Prior art date
Links
- 230000037361 pathway Effects 0.000 claims abstract description 77
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 43
- 239000012530 fluid Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 14
- 229910001369 Brass Inorganic materials 0.000 claims description 9
- 239000010951 brass Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 230000005496 eutectics Effects 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000000155 melt Substances 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/1624—Destructible or deformable element controlled
- Y10T137/1797—Heat destructible or fusible
- Y10T137/1804—With second sensing means
Definitions
- the present invention relates to relief devices, and more specifically, to relief valves that provide pressure relief to a pressurized fluid within a container or canister when a predetermined temperature or pressure is exceeded.
- Containers or vessels that contain a gas or liquid commodity under pressure may be equipped with relief valves to prevent a rupturing of the container due to excessive pressures or temperatures. Such relief valves will allow a resulting excess pressure to escape.
- One device is a fitting that includes a fusible plug that blocks and seals an outlet passage in the container. Once the temperature surrounding the container reaches the yield point of the fusible plug, the plug melts and pressure forces the melted plug out through the passage, thus allowing the pressure in the container to escape.
- a problem may arise, however, in that the fusible plug may extrude over time when exposed to high pressures. This failure in turn may cause a pressure leak path. Therefore, this type of fusible plug may not be able to be used with containers containing commodities that normally are under higher pressures, thus limiting the types of commodities that may be used with the plug.
- the fusible plug may be effective when excessive thermal conditions are experienced, the fusible plug generally is not effective under excessive pressure conditions.
- Another solution has been to use two relief devices: a pressure relief valve for when excessive pressures are experienced and a thermal fuse for when thermal relief is needed.
- this solution provides the disadvantage of requiring a container adapted for two relief devices.
- a first housing having an opening at a first end and a pathway extending towards the opening from a second end of the first housing.
- a second housing is partially received in the opening of the first housing, and the first and the second housings define a chamber adjacent the pathway.
- An exitway extends from the chamber to an exterior of the valve.
- a bearing element is within the chamber adjacent the pathway and is larger than a width of the pathway.
- a spring is within the chamber, is under compression, and in line with the bearing element.
- a thermal element is also within the chamber and in line with the spring. The thermal element melts at a predetermined temperature. The spring exerts a force on the bearing element such that the bearing element is biased against the pathway and forms a seal between the chamber and the pathway.
- a thermal element is partially received in the opening of the first housing.
- the first housing and the thermal element define a chamber adjacent the pathway and the thermal element melts at a predetermined temperature.
- An exitway extends from the chamber to an exterior of the valve.
- a bearing element is within the chamber adjacent the pathway and is larger than a width of the pathway.
- a spring is within the chamber, is under compression, and in line with the bearing element. The spring exerts a force on the bearing element such that the bearing element is biased against the pathway and forms a seal between the chamber and the pathway.
- a first housing has an opening at a first end and a pathway extending towards the opening from a second end of the first housing.
- a second housing is partially received in the opening of the first housing, and the first and the second housings define a chamber adjacent the pathway.
- An exitway extends from the chamber to an exterior of the valve.
- a bearing element is within the chamber and includes a sealing portion adjacent the pathway and a thermal element. The sealing portion is larger than a width of the pathway. The thermal element is adjacent the sealing portion and melts at a predetermined temperature.
- a spring is located within the chamber, is under compression, and in line with the bearing element. The spring exerts a force on the bearing element such that the bearing element is biased against the pathway and forms a seal between the chamber and the pathway.
- a pressurized container contains a fluid under pressure.
- a pressure and thermal relief valve is attached with and in fluid communication with the container.
- the pressure and thermal relief valve includes a first housing with an opening at a first end and a second housing partially received within the opening.
- a pathway extends towards the opening from a second end of the first housing.
- a chamber is adjacent the pathway and defined by the first and the second housings.
- An exitway extends from the chamber to an exterior of the valve.
- a sealing element is within the chamber and adjacent the pathway. The sealing element is larger than a width of the pathway.
- a spring is under compression within the chamber and in line with the sealing element.
- a thermal element is within the chamber and in line with the spring. The thermal element melts at a predetermined temperature. The spring exerts a force on the sealing element such that the sealing element is biased against the pathway and forms a seal between the chamber and the pathway.
- FIG. 1 is an embodiment of a combination thermal and pressure relief valve incorporated as an appurtenance to a pressurized container;
- FIG. 2 is a side view of an embodiment of the combination thermal and pressure relief valve with a portion of the valve removed;
- FIG. 3 is a second embodiment of the valve of FIG. 2; and FIG. 4 is a third embodiment of the valve of FIG. 3.
- FIG. 1 illustrates one embodiment of a container 2 having a combination pressure relief valve and thermal pressure fuse 4 (herein after called “the valve”).
- the container preferably holds a liquid or gaseous fluid (not shown) under pressure.
- the pressure within the container 2 may build due to excessive temperature or pressure conditions.
- the valve 4 as will be more fully described below, provides pressure relief when a predetermined pressure or temperature is reached, thus preventing damage to the container or fluid.
- the valve 4 is incorporated into an opening 6 in a manifold 3 of the container 2, preferably by having exterior threads 13 (FIG. 2) on the valve 4 engage with interior threads (not shown) on the manifold 3.
- the manifold is in fluid communication with the container such that the fluid may travel freely between the manifold and container.
- the manifold 3 is attached to a top portion 1 1 of the container 2.
- a seal 8 such as an O- ring may be located around an outer surface 9 of the valve 4 and adjacent an exterior wall 5 of the manifold 3. The seal 8 provides a sealing action between the manifold 3 and the valve 4.
- the valve 4 preferably includes a first housing 10 and a second housing 12.
- the first housing 10 includes a first end 15, a second end 24 opposite the first end, and a pathway 22 that extends from a second end 24 of the first housing 10 towards the first end 15.
- the pathway 22 is thus positioned so that it leads into and is in fluid communication with the manifold 3 (FIG. 1).
- the second housing 12 is received in part within an opening 14 at the first end 15 of the first housing 10 (i.e., a portion less than the entire second housing 12 is received within the opening 14).
- the first housing 10 preferably includes interior threads 16 that engage with exterior threads 18 on the second housing, although in other embodiments the first and second housings may be otherwise attached, such as through the use of fasteners or the like.
- the first housing 10 preferably is made of brass, although in other embodiments, the first housing may be made of steel, an aluminum alloy, or any other type of suitable alloy.
- the second housing 12 is also made of brass, but, as with the first housing, may also be made of steel, an aluminum alloy, or other alloy.
- the second housing may be also be made from a fusible material.
- the second end 24 of the first housing 10 is within the opening 6 of the manifold 3 such that the pathway 22 leads into the interior of the manifold.
- the second housing and a remaining portion 26 of the first housing is outside of the container.
- the portion 26 of the first housing outside of the container 2 includes a shoulder 28 that abuts the exterior wall 5 of the manifold.
- the opening 14 of the first housing includes an exitway 42 that extends from the opening 14 through an outerwall 44 of the first housing such that the exitway 42 leads to the area outside of the valve 4.
- the exitway is located along the portion 26 of the first housing between the shoulder 28 and the second housing 12.
- the first and the second housings 10, 12 define a chamber 20.
- the second housing 12 also has an opening 34 so that when the second housing 12 is received by the first housing 10, the openings 14, 34 of the first and second housings together define the chamber 20 adjacent the pathway 22.
- the valve when the valve is in an actuated state, i.e., when the valve provides thermal or pressure relief, the chamber and the pathway are in fluid communication.
- a bearing element 30, a spring 32, and a thermal element 34 are located within the chamber 20.
- the bearing element 30 is adjacent the pathway 22.
- at least a portion 36 of the bearing element 30 is made of a sealing material that is adjacent the pathway 22.
- the bearing element 30 may be entirely made of a sealing material.
- the remainder of the bearing element 30 acts as a bearing surface that has a force exerted upon it by the spring 22.
- the bearing element 30 includes a sealing member 36a adjacent the pathway and a pin 38 adjacent the sealing member 36.
- the sealing member 36a should be larger than the pathway 22.
- the diameter of the sealing member should be greater than, and thus larger than, the diameter of the pathway.
- a head 46 of the pin 38 acts a surface against which the spring 22 is biased when the valve 4 is in an unactuated state.
- the head 46 of the pin 38 preferably has a receptacle 40 within which the sealing member 36a resides.
- the pin 38 is made of brass, although in other embodiments the pin may be made of other material such as those described for the first and the second housings.
- the bearing element 30 is shaped so that while it acts as a seal against the pathway 22, it does not act as a seal within the chamber 20.
- the head 46 of the pin 38 preferably is hexagonally shaped to allow gas or fluid to flow through the chamber.
- the bearing element may be otherwise shaped so long as it allows flow through the chamber.
- the spring 32 is located adjacent the pin 38 and under normal conditions, when the valve 4 is in a non-actuated state, the spring 32 is under compression and bears against the pin 38 and the sealing member 36a. Thus, under normal conditions the spring 32 biases the pin 38 and the sealing member 36a against the pathway 22. The sealing member thus acts as a seal between the pathway 22 and the chamber 20.
- the spring 32 is a stainless steel spring, although the spring may also be made of silicon steel, a spring steel, or other suitable material that reduces the occurrence of failures such as fracture or creep failures.
- the spring material used may also depend on the type of fluid within the container, so that failures resulting from incompatibilities between the spring and the fluid, such as corrosion, may be reduced.
- the load of the spring will be dependent on the thermal and pressure relief requirements associated with the fluid.
- the thermal element 34 preferably is made from a eutectic material, and more preferably is a eutectic material made from a bismuth or tin alloy.
- the thermal element 34 is placed at an end 40 of the chamber 20 opposite the bearing element 30 and adjacent the spring 32.
- the thermal element may be placed between the spring and the bearing element.
- the thermal element may be placed between the pin and the sealing element.
- the position of the thermal element 34 within the chamber 20 is unimportant so long as it is in-line with the spring 32 so that under normal conditions (i.e., when the valve is in an unactuated state) the spring will be biased against the thermal element.
- the thermal element is normally made of a eutectic material, it may also be made of other materials having a low-melting point, the melting point being determined by the thermal relief requirements associated with the fluid. Examples include, but are not limited to, solders or low melting-point alloys.
- valve 4 is incorporated into the opening 6 in the manifold 3, which is attached to the container 2 containing a gaseous or liquid fluid.
- the spring 32 is under compression and exerts a force against the bearing element 30 so as form a seal between the pathway 22 and the chamber 20.
- the spring 32 biases the bearing element 30 against the pathway 22.
- the thermal element 34 is located in-line with the spring 32.
- the thermal element 34 has a melting point that will cause it to melt, or lose its solid properties, when a predetermined temperature within the container 2 is reached. When this occurs, the thermal element melts, causing the spring 32 to decompress info the area previously occupied by the thermal element 34. When the spring 32 decompresses, the bearing element 30 is no longer biased against the pathway 22. Thus, the excess thermal pressure is able to enter from the pathway 22 and into the chamber 20, and exit through the exitway 42.
- the valve 4 also provides relief when a predetermined pressure is reached.
- the pressure within the container 2 enters the pathway 22 and applies a force against the bearing element 30.
- the pressure against the bearing element 30 exceeds the load of the spring 32.
- the spring 32 is thus further compressed and the bearing element 30 is no longer biased against the pathway 22. The excess pressure thus is able to enter into the chamber 20 and exit out the exitway 42.
- FIG. 3 illustrates an additional embodiment of the valve 4.
- the numbering of the elements of the drawing is the same as that of FIG. 2, except with differences noted with a prime (") designation.
- the second housing 12 performs the function of the thermal element '34.
- the spring 32 is thus in-line, and typically adjacent to, the second housing 12.
- the second housing 12 begins to melt.
- the spring 32 decompresses into the area previously occupied by the second housing.
- the bearing element 30 is no longer biased against the pathway 22.
- the excess thermal pressure may enter the chamber 20 and exit through the exitway 42.
- the operation of the valve 4 with respect to pressure relief is generally the same as that described above.
- FIG. 4 illustrates another embodiment of the valve 4.
- the numbering of the elements of the drawing is the same as that of FIG. 2, except with differences denoted as double prime ( " ).
- the pin 38 performs the function of the thermal element 34.
- the pin 38 may include a receptacle 40 to receive the sealing element 36a.
- the pin 38 will melt.
- the spring 32 decompresses, and the sealing element 36a thus is no longer biased against the pathway 22.
- the excess thermal pressure may enter the chamber 20 and exit through the exitway 42.
- the operation of the valve 4 with respect to pressure relief is generally the same as that described above.
- the thermal element is made of a material so that it melts in approximately 90 seconds when the temperature reaches a predetermined temperature of approximately 281 degrees Fahrenheit. In other embodiments, however, the thermal element may be of a material that melts in a greater or lesser amount of time, depending on specification requirements, and the predetermined temperature may be varied. Depending on specification requirements and the type of spring used, the valve may be actuated when the thermal element fully or partially melts.
- valve provides several advantages over other types of valves that provide thermal and pressure relief.
- some other devices use a fusible plug that blocks and seals an outlet passage in a container. Once the temperature surrounding the container reaches the yield point of the plug, the plug melts and pressure forces the melted plug out through the passage, thus allowing the pressure in the container to escape.
- These fusible plugs are subject to extrusion failures when exposed to high pressures.
- the present valve incorporates a seal between the container and the thermal element. The thermal element, therefore, is not exposed to high pressures, and thus operates independently of pressure. The probability of an extrusion failure is therefore greatly reduced.
- the present valve also requires only one device to provide thermal and pressure relief. Other systems may use both a pressure relief valve and a thermal fuse. Thus, in addition to overcoming the problems associated with fusible plugs, the present valve provides the advantage of requiring a container adapted for one relief device, rather than two.
- the parts are reusable with the exception of the thermal element. This in turn provides the advantage of requiring fewer replacement parts, thus lowering the costs associated with the valve.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03755377A EP1549871B1 (en) | 2002-05-24 | 2003-05-19 | Combination thermal and pressure relief valve |
DE2003609339 DE60309339T2 (en) | 2002-05-24 | 2003-05-19 | HEAT AND PRESSURE RELIEF COMBINATION VALVE |
AU2003247377A AU2003247377A1 (en) | 2002-05-24 | 2003-05-19 | Combination thermal and pressure relief valve |
JP2004507726A JP2005526941A (en) | 2002-05-24 | 2003-05-19 | Relief valve for both heat and pressure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/155,845 US20030217770A1 (en) | 2002-05-24 | 2002-05-24 | Combination thermal and pressure relief valve |
US10/155,845 | 2002-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003100305A1 true WO2003100305A1 (en) | 2003-12-04 |
Family
ID=29549179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/015655 WO2003100305A1 (en) | 2002-05-24 | 2003-05-19 | Combination thermal and pressure relief valve |
Country Status (7)
Country | Link |
---|---|
US (1) | US20030217770A1 (en) |
EP (1) | EP1549871B1 (en) |
JP (1) | JP2005526941A (en) |
AU (1) | AU2003247377A1 (en) |
DE (1) | DE60309339T2 (en) |
ES (1) | ES2276101T3 (en) |
WO (1) | WO2003100305A1 (en) |
Families Citing this family (27)
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ITTO20030760A1 (en) * | 2003-09-30 | 2005-04-01 | Fiat Ricerche | SAFETY VALVE FOR TANKS IN PRESSURE AND TANK |
JP4872506B2 (en) * | 2006-02-23 | 2012-02-08 | 株式会社デンソー | Regulating device |
US7806035B2 (en) * | 2007-06-13 | 2010-10-05 | Baker Hughes Incorporated | Safety vent device |
ITVI20070204A1 (en) * | 2007-07-18 | 2009-01-19 | Tomasetto Achille S P A | SAFETY VALVE STRUCTURE, PARTICULARLY FOR THE RELEASE OF GAS IN OVERLAPPING. |
US8327868B2 (en) * | 2009-06-04 | 2012-12-11 | Control Devices, Llc | Cylinder valve with thermal relief feature |
US9328836B2 (en) * | 2009-11-12 | 2016-05-03 | Schrader Electronics Ltd. | Pressure regulator valve seals, systems and methods |
JP5027894B2 (en) * | 2010-01-25 | 2012-09-19 | 本田技研工業株式会社 | Gas tank |
US8596291B2 (en) * | 2011-05-13 | 2013-12-03 | Stojan Kotefski | Venting lifting plug for munitions |
ITBS20120122A1 (en) | 2012-07-27 | 2014-01-28 | Emer Spa | SAFETY DEVICE, PARTICULARLY FOR GAS SYSTEMS FOR AUTOMOTIVE |
US9249891B2 (en) | 2012-11-13 | 2016-02-02 | McKenzie Valve and Machine LLC | Pressure relief valve and secondary spring force containment assembly |
US9234601B1 (en) * | 2013-09-28 | 2016-01-12 | Kelso Technologies Inc. | Second dual preset pressure relief valve |
FR3016421B1 (en) * | 2014-01-15 | 2016-08-05 | Schrader | ELECTROMAGNETIC VALVE |
WO2016014683A1 (en) | 2014-07-23 | 2016-01-28 | John Tomasko | In-line pressure relief valve and rupture disk |
WO2016019057A1 (en) * | 2014-07-31 | 2016-02-04 | Lightsail Energy, Inc. | Compressed gas storage unit and fill methods |
US20170335984A1 (en) * | 2014-11-05 | 2017-11-23 | Luxfer Canada Limited | Thermal pressure relief device |
US9791059B2 (en) * | 2015-01-21 | 2017-10-17 | Pietro Fiorentini S.P.A. | Vent valve for gas pressure regulators and pressure regulator equipped with said vent valve |
US20180299020A1 (en) * | 2017-04-18 | 2018-10-18 | Mark Shaw | Temperature Responsive Pressure Relief Filter Vent Device for Storage Drums |
CN109282062A (en) * | 2017-07-21 | 2019-01-29 | 凯迈(洛阳)气源有限公司 | Temperature, pressure safety valve |
US10571234B1 (en) | 2018-03-14 | 2020-02-25 | The United States Of America As Represented By The Secretary Of The Army | Venting lifting plug for munitions |
US10378870B1 (en) * | 2018-05-30 | 2019-08-13 | The United States Of America As Represented By The Secretary Of The Army | Energy absorbing flange for meltable fuze plug |
USD902359S1 (en) * | 2018-11-29 | 2020-11-17 | The United States Of America As Represented By The Secretary Of The Army | Lifting plug |
DE102020207261A1 (en) | 2020-06-10 | 2021-12-16 | Argo Gmbh | Thermal pressure relief device (TPRD), gas pressure accumulator and gas pressure accumulator system with TPRD and method for thermal overpressure protection |
CN111795185A (en) * | 2020-07-14 | 2020-10-20 | 浙江大学 | Gas safety valve with under-pressure protection and over-temperature and over-flow cut-off functions and method thereof |
DE102020215381A1 (en) * | 2020-12-04 | 2022-06-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | safety valve and tank |
CN112797315A (en) * | 2021-03-09 | 2021-05-14 | 广东欧佩亚氢能源科技有限公司 | Safety release valve for high-pressure hydrogen cylinder |
WO2022270792A1 (en) * | 2021-06-23 | 2022-12-29 | 영도산업 주식회사 | Pressure relief device for high-pressure vessel |
DE102023201979A1 (en) * | 2023-03-06 | 2024-09-12 | Robert Bosch Gesellschaft mit beschränkter Haftung | Valve arrangement for a tank system, tank system for a hydrogen-powered vehicle, fuel cell arrangement, hydrogen internal combustion engine system, fuel cell-powered vehicle, hydrogen-powered vehicle |
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2002
- 2002-05-24 US US10/155,845 patent/US20030217770A1/en not_active Abandoned
-
2003
- 2003-05-19 EP EP03755377A patent/EP1549871B1/en not_active Expired - Lifetime
- 2003-05-19 AU AU2003247377A patent/AU2003247377A1/en not_active Abandoned
- 2003-05-19 WO PCT/US2003/015655 patent/WO2003100305A1/en active IP Right Grant
- 2003-05-19 DE DE2003609339 patent/DE60309339T2/en not_active Expired - Lifetime
- 2003-05-19 ES ES03755377T patent/ES2276101T3/en not_active Expired - Lifetime
- 2003-05-19 JP JP2004507726A patent/JP2005526941A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2295154A (en) * | 1942-09-08 | Drain valve | ||
US2697915A (en) * | 1951-10-22 | 1954-12-28 | Allen E Chisholm | Condition responsive two-stage relief valve |
US3618627A (en) * | 1969-10-29 | 1971-11-09 | William Wagner | Valve automatic pressure release means |
US6006774A (en) * | 1994-12-21 | 1999-12-28 | Cti Composite Products | Thermally activated pressure relief valve or fuse plug for protecting pressurized devices from over pressure due to fire |
US5632297A (en) * | 1995-09-26 | 1997-05-27 | Amcast Industrial Corporation | Piston-type thermally or pressure activated relief device |
WO2001001026A1 (en) * | 1999-06-24 | 2001-01-04 | Giat Industries | Relief valve |
WO2002001099A1 (en) * | 2000-06-30 | 2002-01-03 | Giat Industries | Safety valve for tank containing a pressurised liquid fluid such as lpg |
Also Published As
Publication number | Publication date |
---|---|
EP1549871B1 (en) | 2006-10-25 |
JP2005526941A (en) | 2005-09-08 |
DE60309339T2 (en) | 2007-05-03 |
ES2276101T3 (en) | 2007-06-16 |
AU2003247377A1 (en) | 2003-12-12 |
DE60309339D1 (en) | 2006-12-07 |
EP1549871A1 (en) | 2005-07-06 |
US20030217770A1 (en) | 2003-11-27 |
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