WO2003085300A1 - Security apparatus for water purifiers - Google Patents

Security apparatus for water purifiers Download PDF

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Publication number
WO2003085300A1
WO2003085300A1 PCT/ES2003/000154 ES0300154W WO03085300A1 WO 2003085300 A1 WO2003085300 A1 WO 2003085300A1 ES 0300154 W ES0300154 W ES 0300154W WO 03085300 A1 WO03085300 A1 WO 03085300A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
piece
breakable
safety equipment
equipment applicable
Prior art date
Application number
PCT/ES2003/000154
Other languages
Spanish (es)
French (fr)
Inventor
José SORIANO SANSANO
Original Assignee
Soriano Sansano Jose
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Soriano Sansano Jose filed Critical Soriano Sansano Jose
Publication of WO2003085300A1 publication Critical patent/WO2003085300A1/en
Priority to US10/961,386 priority Critical patent/US20050092663A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • 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
    • 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
    • F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
    • F16K17/406—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint the fracturing member being a generally elongated member, e.g. rod or wire, which is directly connected to a movable valve member, the breaking or buckling of the elongated member allowing the valve member to move to a closed or open position

Definitions

  • the invention consists of a safety equipment applicable to water treatment plants that aims to avoid the possible risks of flooding in homes or premises, as a consequence of the leaks produced in water treatment plants, either due to the existence of pores, or through connections, etc. .
  • Water treatment plants include among their elements a feed valve, as well as a set of couplings and joints, which although they incorporate various sealing means, such as joints and other elements, sometimes occurs after a period of time. Fluid leaks occur, which can lead to flooding of homes and premises and in the best case produce humidity and leaks that would need to be repaired later.
  • the invention proposes a safety equipment applicable to water treatment plants characterized in that it comprises passive means that are responsible for interrupting the supply of water to the treatment plant when water leaks or leaks
  • the equipment is complemented with a bucket that is responsible in principle for collecting the fluid derived by that possible escape of water, so that in a lower area of such a bucket there is a part associated with a feed valve of the purifier, so that when the water level inside the bucket reaches that piece of cardboard or the like, it is broken and then the feed valve is closed by the action of an antagonist spring or any other means tending to close said valve, such as a counterweight.
  • the breakable piece in contact with the fluid can be made of cardboard or any other breakable material also when it comes into contact with that particular fluid.
  • the breakable piece on contact with water could easily be placed in an area as close to the bottom of the bucket as desired in order to interrupt the supply of the treatment plant as soon as possible.
  • Another possibility would be a small lower recess on the bottom of the bucket so that the interruption of the feed to the treatment plant is even faster if possible.
  • the bucket apart from serving as a receptacle itself to accumulate water so that it can reach that breakable piece, will also prevent any leaks or moisture from being produced from the first drop of spilled water.
  • the treatment plant assembly will be housed inside the bucket or at least arranged in the same vertical so that any water leakage reaches the inside of the bucket without spilling out of said bucket.
  • Figure 1. Shows a perspective view of the safety equipment applicable to water treatment plants, object of the invention.
  • Figures 2 and 3. Show elevation views of the device assembly of the invention.
  • a feed valve 3 of the purifier 2 that can be opened and closed by an external control determined by a lever 4, which is associated with a spring 5 tending to keep said valve 3 closed, although normally said valve 3 will be open thanks to a strap 6 also attached to that control lever 4, strap 6, in turn associated with a piece of cardboard 7 anchored to a located front pin 8, like the cardboard piece 7, in a lower area of the tray 1, so that when there are water leaks, the fluid falls into the bucket 1 until the level of water inside it reaches that piece of cardboard 7, which when it comes into contact with the water breaks, helping this is evident as the tension of the antagonist spring 5.
  • the spring 5 tending to close the feed valve 3, the fluid supply is automatically cut off and passively, thus avoiding any flooding, leakage oh unwanted umedad.
  • the feed valve 3, as well as the purifier assembly are associated to the tank 1 by means of a support 9 anchored on a side wall of such a tank 1, so that the spring 5 is hooked at one end in a hole 10 of the joystick 4 of the feed valve 3, while the another end is anchored in another hole 11 established in an upper area of the support 9.
  • the control lever 4 of the feed valve 6 includes a second hole 12 where it engages one end of the tie rod 6, while the other end engages in an upper hole 13 of the cardboard piece 7, counting this in turn with another hole bottom 14, through which the said piece of cardboard 7 is anchored in the front stud 8 integral with the support 9 fixed to the tray 1.
  • the holes 13 and 14 of the cardboard piece 7 are reinforced by annular rivets 16 in order to avoid undue tearing or breaking of such cardboard piece 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention relates to security apparatus for the passive disconnection of the water supply to a purifier when water leaks or escapes therefrom in order to avoid the risk of flooding. The apparatus essentially comprises passive means acting upon a supply valve (3) closing said valve, in such a way that the escaping fluid breaks a breakable piece (7) when the latter comes into contact with said fluid, thereby interrupting the supply of the purifier.

Description

EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA OBJETO DE LA INVENCIÓN SAFETY EQUIPMENT APPLICABLE TO WATER TREATMENTERS OBJECT OF THE INVENTION
La invención consiste en un equipo de seguridad aplicable a depuradoras de agua que pretende evitar los posibles riesgos de inundación en viviendas o locales, como consecuencia de las fugas producidas en depuradoras de agua, bien por la existencia de poros, bien por las conexiones, etc.The invention consists of a safety equipment applicable to water treatment plants that aims to avoid the possible risks of flooding in homes or premises, as a consequence of the leaks produced in water treatment plants, either due to the existence of pores, or through connections, etc. .
Se trata pues de un equipo que de forma pasiva se encarga de interrumpir la alimentación de agua a la depuradora cuando exista una fuga o escape de agua a fin de evitar esos riesgos de inundación.It is therefore a team that passively is responsible for interrupting the water supply to the treatment plant when there is a leak or leakage of water in order to avoid these flood risks.
ANTECEDENTES DE LA INVENCIÓN Las depuradoras de agua incluyen entre sus elementos una válvula de alimentación, así como un conjunto de acoplamientos y uniones, que aunque incorporan diversos medios de estanqueidad, como por ejemplo juntas y otros elementos, ocurre a veces que al cabo del tiempo se producen fugas de fluido, lo cual puede desembocar en inundaciones de viviendas y locales y en el mejor de los casos producir humedades y goteras que sería preciso reparar después.BACKGROUND OF THE INVENTION Water treatment plants include among their elements a feed valve, as well as a set of couplings and joints, which although they incorporate various sealing means, such as joints and other elements, sometimes occurs after a period of time. fluid leaks occur, which can lead to flooding of homes and premises and in the best case produce humidity and leaks that would need to be repaired later.
DESCRIPCIÓN DE LA INVENCIÓN Para lograr los objetivos y evitar los inconvenientes mencionados en los apartados anteriores, la invención propone un equipo de seguridad aplicable a depuradoras de agua que se caracteriza porque comprende medios pasivos que se encargan de interrumpir el suministro de agua a la depuradora cuando se produce un escape o fuga de agua . Para ello, el equipo se complementa con una cubeta que se encarga en principio de recoger el fluido derivado por ese posible escape de agua, de manera que en una zona inferior de tal cubeta existe una pieza asociada a una válvula de alimentación de la depuradora, de manera que cuando el nivel de agua dentro de la cubeta alcanza esa pieza de cartón o similar, ésta se rompe y entonces la válvula de alimentación se cierra por la acción de un resorte antagonista o cualquier otro medio tendente a cerrar dicha válvula, como por ejemplo un contrapeso. La pieza rompible al contacto con el fluido puede ser de cartón o cualquier otro material rompible también cuando entra en contacto con ese fluido en concreto.DESCRIPTION OF THE INVENTION To achieve the objectives and avoid the inconveniences mentioned in the previous sections, the invention proposes a safety equipment applicable to water treatment plants characterized in that it comprises passive means that are responsible for interrupting the supply of water to the treatment plant when water leaks or leaks For this, the equipment is complemented with a bucket that is responsible in principle for collecting the fluid derived by that possible escape of water, so that in a lower area of such a bucket there is a part associated with a feed valve of the purifier, so that when the water level inside the bucket reaches that piece of cardboard or the like, it is broken and then the feed valve is closed by the action of an antagonist spring or any other means tending to close said valve, such as a counterweight. The breakable piece in contact with the fluid can be made of cardboard or any other breakable material also when it comes into contact with that particular fluid.
La pieza rompible al contacto con el agua se podría colocar fácilmente en una zona tan próxima al fondo de la cubeta como se desee a fin de interrumpir la alimentación de la depuradora cuanto antes.The breakable piece on contact with water could easily be placed in an area as close to the bottom of the bucket as desired in order to interrupt the supply of the treatment plant as soon as possible.
Otra posibilidad sería un pequeño cajeado inferior sobre el fondo de la cubeta para que la interrupción de la alimentación a la depuradora sea aun más rápida si cabe.Another possibility would be a small lower recess on the bottom of the bucket so that the interruption of the feed to the treatment plant is even faster if possible.
La cubeta, aparte de servir como receptáculo propiamente dicho para acumular el agua a fin de que la misma pueda alcanzar a esa pieza rompible, también evitará que desde la primera gota de agua derramada no se produzca ningún tipo de gotera ni humedad.The bucket, apart from serving as a receptacle itself to accumulate water so that it can reach that breakable piece, will also prevent any leaks or moisture from being produced from the first drop of spilled water.
El conjunto de la depuradora quedará alojado dentro de la cubeta o al menos dispuesto en la misma vertical a fin de que cualquier fuga de agua alcance el interior de la cubeta sin que se derrame fuera de la misma dicho agua.The treatment plant assembly will be housed inside the bucket or at least arranged in the same vertical so that any water leakage reaches the inside of the bucket without spilling out of said bucket.
A continuación para facilitar una mejor comprensión de esta memoria descriptiva y formando parte integrante de la misma se acompañan unas figuras en las que con carácter ilustrativo y no limitativo se ha representado el objeto de la invención.Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, some figures are attached in which the object of the invention has been illustrated and not limited to.
BREVE DESCRIPCIÓN DE LOS DIBUJOS Figura 1.- Muestra una vista en perspectiva del equipo de seguridad aplicable a depuradoras de agua, objeto de la invención. Figuras 2 y 3.- Muestran unas vistas en alzado del conjunto del dispositivo de la invención.BRIEF DESCRIPTION OF THE DRAWINGS Figure 1.- Shows a perspective view of the safety equipment applicable to water treatment plants, object of the invention. Figures 2 and 3.- Show elevation views of the device assembly of the invention.
DESCRIPCIÓN DE LA FORMA DE REALIZACIÓN PREFERIDODESCRIPTION OF THE PREFERRED EMBODIMENT
A continuación se describe un ejemplo de realización de la invención atendiendo a la numeración adoptada en las figura.An example of embodiment of the invention is described below, according to the numbering adopted in the figures.
Se determina a partir de una cubeta 1, dentro de la cual se alojan, al menos parcialmente, el conjunto de una depuradora 2 , de manera que cualquier fuga o escape que se produzca será recogida por esa cubeta 1.It is determined from a bucket 1, within which the assembly of a purifier 2 is housed, at least partially, so that any leakage or escape that occurs will be collected by that bucket 1.
Existe una válvula de alimentación 3 de la depuradora 2 que se puede abrir y cerrar mediante un mando exterior determinado por una palanca 4, la cual está asociada a un resorte 5 tendente a mantener cerrada dicha válvula 3, aunque normalmente dicha válvula 3 estará abierta gracias a un tirante 6 enganchado también a esa palanca de mando 4, tirante 6, asociado a su vez a una pieza de cartón 7 anclada a un tetón frontal 8 localizado, al igual que la pieza de cartón 7, en una zona inferior de la cubeta 1, de manera que cuando existen fugas de agua, el fluido cae dentro de la cubeta 1 hasta que el nivel de agua dentro de la misma alcanza a esa pieza de cartón 7, que al entrar en contacto con el agua se rompe, ayudando a ello como es evidente la tensión del resorte antagonista 5. Cuando ocurre esto, el resorte 5 tendente a cerrar la válvula de alimentación 3, se corta automáticamente y de forma pasiva el suministro de fluido, evitándose así cualquier inundación, gotera o humedad indeseada.There is a feed valve 3 of the purifier 2 that can be opened and closed by an external control determined by a lever 4, which is associated with a spring 5 tending to keep said valve 3 closed, although normally said valve 3 will be open thanks to a strap 6 also attached to that control lever 4, strap 6, in turn associated with a piece of cardboard 7 anchored to a located front pin 8, like the cardboard piece 7, in a lower area of the tray 1, so that when there are water leaks, the fluid falls into the bucket 1 until the level of water inside it reaches that piece of cardboard 7, which when it comes into contact with the water breaks, helping this is evident as the tension of the antagonist spring 5. When this occurs, the spring 5 tending to close the feed valve 3, the fluid supply is automatically cut off and passively, thus avoiding any flooding, leakage oh unwanted umedad.
La válvula de alimentación 3, así como el conjunto de la depuradora se encuentran asociados a la cubeta 1 por mediación de un soporte 9 anclado sobre una pared lateral de tal cubeta 1, de manera que el resorte 5 se engancha por un extremo en un orificio 10 de la palanca de mando 4 de la válvula de alimentación 3, mientras que el otro extremo se ancla en otro orificio 11 establecido en una zona superior del soporte 9.The feed valve 3, as well as the purifier assembly are associated to the tank 1 by means of a support 9 anchored on a side wall of such a tank 1, so that the spring 5 is hooked at one end in a hole 10 of the joystick 4 of the feed valve 3, while the another end is anchored in another hole 11 established in an upper area of the support 9.
La palanca de mando 4 de la válvula de alimentación 6 incluye un segundo orificio 12 donde engancha un extremo del tirante 6, mientras que el otro extremo engancha en un orificio superior 13 de la pieza de cartón 7, contando esta a su vez con otro orificio inferior 14, a través del cual queda anclada la citada pieza de cartón 7 en el tetón frontal 8 solidario del soporte 9 fijado a la cubeta 1.The control lever 4 of the feed valve 6 includes a second hole 12 where it engages one end of the tie rod 6, while the other end engages in an upper hole 13 of the cardboard piece 7, counting this in turn with another hole bottom 14, through which the said piece of cardboard 7 is anchored in the front stud 8 integral with the support 9 fixed to the tray 1.
El suministro de fluido a la válvula de alimentación 3 y por tanto al conjunto de la depuradora llega como es evidente a través de una tubería 15.The fluid supply to the feed valve 3 and therefore to the purifier assembly arrives as is evident through a pipe 15.
Por otro lado, los orificios 13 y 14 de la pieza de cartón 7 están reforzados mediante unos remaches anulares 16 a fin de evitar el rasgado o rotura indebidos de la tal pieza de cartón 7. On the other hand, the holes 13 and 14 of the cardboard piece 7 are reinforced by annular rivets 16 in order to avoid undue tearing or breaking of such cardboard piece 7.

Claims

REIVINDICACIONES
1.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS1.- SECURITY EQUIPMENT APPLICABLE TO DEPURATORS
DE AGUA, que estando destinado a evitar humedades e inundaciones pequeñas o grandes cuando se producen fugas de agua en el conjunto de la depuradora, la cual incorpora una válvula de alimentación; se caracteriza porque incluye medios pasivos cuando existen fugas de agua que actúan sobre la válvula de alimentación (3) cerrando la misma, de manera que el fluido que se fuga se encarga de mojar una pieza rompible (7) al contacto con el fluido fugado, pieza que mantiene la válvula de alimentación (3) abierta normalmente en contra de la resistencia de un elemento antagonista tendente a cerrar esa válvula de alimentación (3) .OF WATER, that being destined to avoid humidities and small or great floods when water leaks in the whole of the purifier, which incorporates a feeding valve; It is characterized in that it includes passive means when there are water leaks that act on the feed valve (3) closing it, so that the leaking fluid is responsible for wetting a breakable piece (7) on contact with the leaking fluid, piece that keeps the feed valve (3) open normally against the resistance of an antagonist element tending to close that feed valve (3).
2.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según la reivindicación 1, caracterizado porque la pieza rompible (7) al contacto con el agua se encuentra anclada por un extremo a un punto fijo, mientras que por otro extremo está asociada a una palanca de mando (4) de la válvula de alimentación (3) por mediación de un tirante intermedio (6) ; estando asociado a dicha palanca de mando2. SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to claim 1, characterized in that the breakable part (7) in contact with water is anchored at one end to a fixed point, while at the other end it is associated with a control lever (4) of the feed valve (3) by means of an intermediate tie rod (6); being associated with said joystick
(4) el elemento antagonista tendente a cerrar la válvula de alimentación (3) a través de la palanca de mando (4) .(4) the antagonist element tending to close the feed valve (3) through the control lever (4).
3.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según una cualquiera de las reivindicaciones anteriores, caracterizado porque el elemento antagonista consiste en un resorte (5) .3. SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to any one of the preceding claims, characterized in that the antagonist element consists of a spring (5).
4.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según una cualquiera de las reivindicaciones 1 y 2, caracterizado porque el elemento antagonista consiste en un contrapeso.4. SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to any one of claims 1 and 2, characterized in that the antagonist element consists of a counterweight.
5.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según una cualquiera de las reivindicaciones anteriores, caracterizado porque incluye una cubeta (1) donde se aloja el conjunto de la depuradora (2) y que se utiliza esa cubeta como depósito de recogida del agua fugada, encontrándose también dentro de la cubeta (1) la pieza (7) rompible al contacto con el fluido, de manera que cuando el nivel de agua fugado que cae dentro de la cubeta alcanza a la citada pieza (7) , ésta se rompe, situándose entonces la válvula de alimentación (3) en posición cerrada por la acción del elemento antagonista tendente a cerrar dicha válvula de alimentación (3) .5.- SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to any one of the preceding claims, characterized in that it includes a bucket (1) where the treatment plant assembly (2) is housed and which is use that bucket as a collection tank for the leaked water, the piece (7) that is breakable when in contact with the fluid is also inside the bucket (1), so that when the level of leaked water that falls into the bucket reaches the said piece (7), it is broken, then placing the supply valve (3) in a closed position by the action of the antagonist element tending to close said supply valve (3).
6.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según la reivindicación 5, caracterizado porque incluye un soporte (9) solidario de la cubeta (1) y sobre el cual se fija la depuradora (2) , así como la válvula de alimentación (3) , asociándose también a dicho soporte (9) el elemento antagonista por su extremo libre, así como el punto fijo de conexión de la pieza rompible (7) determinado dicho punto fijo por un tetón frontal (8) donde articula tal pieza rompible (7) .6.- SAFETY EQUIPMENT APPLICABLE TO WATER DEPURATORS, according to claim 5, characterized in that it includes a support (9) integral with the tank (1) and on which the treatment plant (2) is fixed, as well as the supply valve (3), said antagonist element also being associated with said support (9) at its free end, as well as the fixed point of connection of the breakable piece (7) determined said fixed point by a front stud (8) where such a breakable piece articulates (7).
7.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según una cualquiera de las reivindicaciones anteriores, caracterizado porque la pieza rompible (7) es esencialmente de cartón o material similar.7.- SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to any one of the preceding claims, characterized in that the breakable piece (7) is essentially made of cardboard or similar material.
8.- EQUIPO DE SEGURIDAD APLICABLE A DEPURADORAS DE AGUA, según la reivindicación 2, caracterizado porque los puntos extremos de conexión de la pieza rompible (7) al contacto con el agua son articulados gracias a unos orificios frontales (13 y 14) reforzados por unos remaches anulares (16) que bordean dichos orificios establecidos en la pieza rompible (7) . 8.- SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS, according to claim 2, characterized in that the end points of connection of the breakable piece (7) to the contact with water are articulated thanks to front holes (13 and 14) reinforced by annular rivets (16) bordering said holes established in the breakable piece (7).
PCT/ES2003/000154 2002-04-08 2003-04-04 Security apparatus for water purifiers WO2003085300A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/961,386 US20050092663A1 (en) 2002-04-08 2004-10-07 Safety equipment applicable to water purifiers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESU200200875 2002-04-08
ES200200875U ES1051691Y (en) 2002-04-08 2002-04-08 SAFETY EQUIPMENT APPLICABLE TO WATER CLEANERS.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/961,386 Continuation US20050092663A1 (en) 2002-04-08 2004-10-07 Safety equipment applicable to water purifiers

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Publication Number Publication Date
WO2003085300A1 true WO2003085300A1 (en) 2003-10-16

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WO (1) WO2003085300A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107469228B (en) * 2017-08-11 2020-10-20 四川大学华西医院 Safety one-way valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538929A (en) * 1968-09-16 1970-11-10 Fruehauf Corp Valve actuator
GB2220049A (en) * 1988-04-21 1989-12-28 Anthony Kenneth James Lewis Apparatus for switching off a fluid supply
US6105597A (en) * 1999-08-30 2000-08-22 Betts Industries, Inc. Emergency shut-off device for cam-over valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538929A (en) * 1968-09-16 1970-11-10 Fruehauf Corp Valve actuator
GB2220049A (en) * 1988-04-21 1989-12-28 Anthony Kenneth James Lewis Apparatus for switching off a fluid supply
US6105597A (en) * 1999-08-30 2000-08-22 Betts Industries, Inc. Emergency shut-off device for cam-over valve

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Publication number Publication date
ES1051691U (en) 2002-09-16
ES1051691Y (en) 2003-01-16

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