EP1716932B1 - Distributeur de liquide - Google Patents

Distributeur de liquide Download PDF

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Publication number
EP1716932B1
EP1716932B1 EP05425271A EP05425271A EP1716932B1 EP 1716932 B1 EP1716932 B1 EP 1716932B1 EP 05425271 A EP05425271 A EP 05425271A EP 05425271 A EP05425271 A EP 05425271A EP 1716932 B1 EP1716932 B1 EP 1716932B1
Authority
EP
European Patent Office
Prior art keywords
dispensing
fluid
wall
compensation
container
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.)
Active
Application number
EP05425271A
Other languages
German (de)
English (en)
Other versions
EP1716932A1 (fr
Inventor
Maurizio Bistolfi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guala Dispensing SpA
Guala Dispensing SRL
Original Assignee
Guala Dispensing SpA
Guala Dispensing SRL
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 Guala Dispensing SpA, Guala Dispensing SRL filed Critical Guala Dispensing SpA
Priority to ES05425271T priority Critical patent/ES2315826T3/es
Priority to DE602005010214T priority patent/DE602005010214D1/de
Priority to EP05425271A priority patent/EP1716932B1/fr
Priority to AT05425271T priority patent/ATE410238T1/de
Publication of EP1716932A1 publication Critical patent/EP1716932A1/fr
Application granted granted Critical
Publication of EP1716932B1 publication Critical patent/EP1716932B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1029—Pumps having a pumping chamber with a deformable wall actuated by a lever
    • B05B11/103—Pumps having a pumping chamber with a deformable wall actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1095—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with movable suction side

Definitions

  • the object of the present invention is a device for dispensing a fluid, for example a detergent, a disinfectant and the like, adapted for dispensing at least one fluid.
  • a dispensing device for example with a trigger, generally consists of a container wherein the fluid to be dispensed is held, a pumping device for sucking the fluid from the container and for dispensing the sucked fluid to the outside, and a trigger for actuating the pumping device.
  • the container is put is communication with the atmosphere by a compensation duct.
  • the presence of the compensation duct causes fluid leaks from the container to the outside, especially during a usage of said devices in inclined position.
  • a dispensing device exhibits a compensation duct communicating with the container through a small-diameter hole, so as to limit the amount of fluid flowing through the compensation duct.
  • the object of the present invention is to reduce or eliminate fluid leaking through the compensation duct.
  • . - figure 1 shows a section view of a dispensing head of a device according to a first embodiment of the invention
  • FIG. 1 shows a perspective section view of the dispensing head of figure 1 ;
  • FIG. 3 shows an enlarged detail of the head of figure 2 , wherein a compensation element of the device can be seen;
  • FIG. 5 shows a section view of a dispensing head of a device according to a further embodiment
  • FIG. 6 shows a perspective section view of the dispensing head of figure 6 ;
  • FIG. 7 shows an enlarged detail of the head of figure 6 , wherein a compensation element of the device can be seen, and
  • reference numeral 1 indicates a dispensing head of a dispensing device adapted for dispensing a fluid.
  • the dispensing device comprises containment means adapted for containing said fluid.
  • said containment means comprise a container which delimits a space for containing the fluid (not shown).
  • the dispensing head 1 is associable to said containment means.
  • said dispensing head 1 is associable to said container through a threaded ring nut 2.
  • the dispensing head 1 comprises pumping means adapted for being actuated for sucking a given amount of fluid from said containment means during a suction step and adapted for dispensing said given amount of fluid outside the device during a dispensing step.
  • said pumping means comprise a piston element 6 comprising a tubular stem 8 that extends along a pumping axis X-X, between a bottom end 10, close to the bottom of the container, and a top end 12, opposed to said bottom end 10.
  • said piston element 6 comprises a deformable membrane 14, shaped as a cup, that connects to said tubular stem 8 in the proximity of said top end 12.
  • the tubular stem 8 exhibits a closing wall 16 that blocks said top end 12 of stem 8, partly separated from the remaining portion of stem 8 through a cut.
  • the tubular stem 8 exhibits an annular enlargement 18 on the outer surface thereof.
  • said pumping means comprise a coupling element 20 comprising a delimiting wall 22 adapted for seating, at least partly, said top end 12 of the tubular stem 8.
  • the coupling element 20 comprises a connecting wall 24 and a stop wall 26, radially spaced from one another and having prevailing extension along said pumping axis X-X.
  • said coupling element 20 comprises a tubular dispensing element 27 which delimits a dispensing duct 28 that mainly extends along a dispensing axis Y-Y, preferably perpendicular to said pumping axis X-X.
  • the dispensing head 1 comprises a support body 30 mainly extending along said pumping axis X-X.
  • said support body 30 comprises an outer contrast wall 32, an outer hinging wall 34 and an inner tubular guide wall 36.
  • Said inner annular wall 36 extends from a bottom end 38, close to the container, to a top end 40, opposed to said bottom end. At said top end 40, the inner annular wall 36 comprises an annular projection 42 protruding inwards.
  • the dispensing head 1 comprises a compensation element 50 adapted for being connected to said support body 30 at the bottom end of said support body.
  • the compensation element 50 comprises a perforated plate 52. Said compensation element 50 further comprises an annular compensation wall 54, projecting from said plate 52 around said hole.
  • the annular compensation wall 54 preferably comprises a substantially cylindrical portion 56 connected to plate 52, a truncated-cone portion 58 connected to said substantially cylindrical portion 56, and a cylindrical narrowing portion 59, connected to said truncated-cone portion.
  • said truncated-cone portion 58 exhibits such pattern as to be converging towards the bottom of said container.
  • said dispensing head 1 is associable to an elongated tubular element 60, mainly extending along said pumping axis X-X, adapted for being inserted into said annular compensation wall 54 of the compensation element 50.
  • said dispensing head 1 comprises actuating means adapted for being handled by a user for actuating said pumping means.
  • said actuating means comprise a trigger 70 adapted for being hinged to said support body 30.
  • said actuating means comprise an active portion 72, connected to said trigger 70, adapted for influencing said pumping means for dispensing the fluid.
  • the dispensing head 1 comprises opening/closing means adapted for being handled to allow/prevent the fluid dispensing.
  • said opening/closing means comprise a closing body 80 adapted for being at least partly inserted into said dispensing duct of the coupling element and adapted for switching from a closed configuration wherein it prevents the fluid dispensing, to an open configuration, rotated relative to said closed configuration, wherein it allows said dispensing.
  • said dispensing head 1 comprises covering means adapted for at least partly covering said pumping means.
  • said covering means comprise a covering wall 90 adapted for being connected to said support body 30 and to said delimiting wall 22.
  • Said covering wall 90 comprises an annular offshoot 92 that protrudes from said wall and is adapted for seating, at least partly, and for holding said delimiting wall 22 of the coupling element 20.
  • Figures 5 to 8b show the device according to the invention in a further embodiment, structurally and functionally similar to the previous one.
  • the compensation element 50 comprises plate 52 comprising an annular connecting wall 52b, arranged peripherally.
  • Said connecting wall 52b is adapted for resting on the end edge of the container neck.
  • said cylindrical portion 56 comprises a protruding annular portion 56b which protrudes from said plate 52 at a side opposed to said annular compensation wall 54.
  • said plate 52 exhibits a truncated-cone shape, diverging towards said annular compensation wall 54.
  • device 1 comprises a bayonet system, for connecting the dispensing head to the container.
  • the tubular stem 8 is inserted in inner annular guide wall 36 of the support body 30.
  • the annular projection 42 of the inner annular wall 36 is in interference on the annular enlargement 18 of the tubular stem 8.
  • said annular projection 42 and said enlargement 18 constitute a preferred example of "static" sealing means adapted for preventing fluid leaks from the container.
  • the compensation element 50 is connected to the support body 30.
  • plate 52 is in abutment on the outer connecting wall 32 and on the hinging wall 34, whereas the bottom end of the inner tubular wall 36 is at least partly seated in the hole of plate 52 and in abutment on the annular compensation wall 54 ( figure 1 ).
  • plate 52 is associated to the edge of the container neck through said peripheral connecting wall 52b and the bottom end of the inner tubular wall 36 is at least partly seated in the hole of plate 52 ( figure 5 ).
  • the elongated tubular element 60 is inserted in the annular compensation wall 54 and sealingly connects to the bottom end 10 of the tubular stem 8.
  • a compensation duct 100 is obtained.
  • Said compensation duct 100 comprises a narrowing portion 102 directly in communication with said space of the container and having a crown-shaped passage zone delimited by the elongated tubular element 60 and by the narrowing portion 59 of the compensation element 50, parallel to one another.
  • Said narrowing portion 102 exhibits a greater axial extension than the thickness of the narrowing portion 59.
  • the crown section extends axially by a portion longer than the thickness or thicknesses of the walls of the compensation element 50.
  • said narrowing portion 102 exhibits an extension not realised only as perforation of a wall of the compensation element 50.
  • Said compensation duct 100 further comprises an expansion portion 104, following said narrowing portion 102.
  • said expansion portion 104 exhibits a nominal dimension greater than the diameter of said narrowing portion 102 of duct 100.
  • Said expansion portion 104 in internally delimited by said elongated tubular element 60 and/or by said tubular stem 8. Externally, said expansion portion 104 is delimited by the truncated-cone portion 58 and/or by the cylindrical portion 56 of said compensation element 50.
  • said expansion portion 104 comprises a truncated-cone portion converging towards said narrowing portion 102 and a cylindrical portion connected to said truncated-cone portion, at a side opposed to said narrowing portion 102.
  • said compensation duct 100 comprises an end portion 106 which extends from said expansion portion 104 to said connection between the annular projection 42 of the inner annular guide wall 36 of the support body 30 and the annular enlargement 18 of the tubular stem 8.
  • Said end portion 106 exhibits a tapered passage section, in particular always smaller than the expansion portion 104 towards said projection-enlargement connection.
  • Said tapering is obtained through a suitable taper of the tubular stem 8 or of the inner annular wall.
  • said compensation duct 100 is delimited, on one side, by a cylindrical narrowing and, on the other side, by the projection-enlargement connection that gives the static seal.
  • trigger 70 is hinged to the hinging wall 34 of the support body 30 and the active portion 72 of said trigger 70 arranges below membrane 14.
  • Membrane 14 is held in position between the support body 30 and the coupling element 20.
  • the delimiting wall 22 arranges axially spaced relative to said membrane 14, delimiting a dispensing chamber 110 therewith for said dispensing head 1.
  • the covering wall 90 arranges in coverage of the coupling element 20, holding the delimiting wall 22 of said coupling element 20 in position through said annular off shot 92.
  • a first configuration called rest configuration
  • the fluid to be dispensed is held in the dispensing chamber 110 and the trigger is arranged in a rest position wherein the active portion 72 does not influence membrane 14 ( figures 1 and 5 ).
  • Said seal is especially useful during the transport or storage of the dispensing device, to prevent the fluid from being spilled out of the container through the compensation duct.
  • dispensing configuration the trigger is rotated from the rest position and the active portion 72 influences membrane 14, deforming it.
  • tubular stem 8 shifts along said pumping axis X-X, sliding into said inner tubular guide wall 36.
  • a dispensing step is obtained by shifting from the rest configuration to the dispensing configuration.
  • the fluid is pushed towards the dispensing duct 28 and dispensed.
  • said closing wall 16, said cut and said tubular stem 8 form a preferred embodiment of check valve means adapted for preventing the backflow of the fluid from the dispensing chamber 110 to the container during said dispensing step.
  • trigger 70 is released and the deformed membrane 14 exhibits the tendency to return to the non-deformed starting configuration.
  • a suction step is obtained from the dispensing configuration to the intermediate return configuration.
  • the increase of the volume of the dispensing chamber 110 causes an action on the closing wall 16, moving it away from the tubular stem 8 and thus opening a passage through which the fluid can be fed to the dispensing chamber 110.
  • membrane 14 causes a suction action on the fluid contained in the container, so that a given amount of said fluid flows through the elongated tubular element 60 and goes into the dispensing chamber 110.
  • the passage of said given amount of fluid from the container to the dispensing chamber 110 causes an air suction action that from outside the container, through said support body 30 and through said compensation duct 100, goes in the container, for compensating the volume of fluid moved to the dispensing chamber.
  • the moderate opening between the annular projection 42 and the surface of the tubular stem 8 allows the air to pass in the compensation duct 100.
  • the sucked air passes through the end portion 106, the expansion portion 104 and the narrowing portion 102 of said compensation duct 100.
  • the device is again in the rest configuration, wherein the static seal is restored.
  • the narrowing portion 59 projecting from the truncated-cone portion 58 surrounds the elongated tubular element 60, so as to prevent the free outward flow of the fluid for the entire stroke of membrane 14.
  • the compensation duct 100 when the compensation duct 100 is at first filled with air, it further prevents the fluid passage, acting as a plenum chamber. In fact, to go outwards, the fluid should push out an air column that creates between the narrowing portion 102 of the compensation duct 100 and the enlargement-projection connection.
  • the device has shown a considerable capability of reducing and even eliminating fluid leaks through the compensation duct.
  • a typical test is carried out by arranging ten dispensing devices filled with fluid to be dispensed.
  • the device is inclined relative to the horizontal plane and the trigger is actuated five times. Any leaks of fluid and the amount of such leaks are then assessed.
  • the test is carried out for each device at different inclinations relative to the horizontal plane (30 hexagesimal degrees, 15 hexagesimal degrees and parallel to the horizontal plane). Moreover, the device is inclined both frontally and laterally.
  • the test is repeated every day, once a day, for six days.
  • the samples are stored at 40 degrees centigrade in oven.
  • the presence of fluid on the outside is assessed and classified with the codes: 0 if no leak is detected; 1 if a leak contained in the support body is detected; 2 if a leak that wets the hands is detected.
  • the device prevents fluid leaks during the transport of the devices in their rest configuration.
  • the device according to the present invention exhibits a simple structure, wherein the narrowing is obtained by connecting a perforated element to the device float.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Closures For Containers (AREA)

Claims (22)

  1. Dispositif de distribution adapté pour distribuer au moins un fluide, comprenant:
    un moyen de confinement adapté pour contenir ledit fluide, dans lequel ledit moyen de confinement comprend un contenant ayant un espace pour contenir le fluide;
    un moyen de pompage adapté pour être actionné de façon à aspirer une quantité donnée de fluide à partir depuis ledit moyen de confinement pendant une étape d'aspiration et adapté pour distribuer ladite quantité donnée de fluide à l'extérieur du dispositif pendant une étape de distribution;
    un moyen d'actionnement adapté pour être manipulé par un utilisateur de façon à actionner ledit moyen de pompage;
    dans lequel ledit espace du contenant communique avec un conduit de compensation (100) comprenant une portion de rétrécissement (102) qui communique directement avec ledit espace et ayant une section de passage en forme de couronne délimitée par une paroi interne et une paroi externe parallèles l'une à l'autre et où ladite paroi externe présente une extension axiale plus grande que l'épaisseur de ladite paroi externe;
    le dispositif de distribution étant caractérisé en ce que
    ledit conduit de compensation (100) comprend en plus une portion d'expansion (104), suivant ladite portion de rétrécissement (102).
  2. Dispositif selon la revendication 1, dans lequel ladite portion d'expansion (104) présente une dimension nominale plus grande que le diamètre de ladite portion de rétrécissement (102) du conduit (100).
  3. Dispositif selon la revendication 1, dans lequel ladite portion d'expansion (104) comprend une portion en forme de cône tronqué convergeant vers ladite portion de rétrécissement (102).
  4. Dispositif selon la revendication 3, dans lequel ladite portion d'expansion (104) comprend une portion cylindrique reliée à ladite portion en forme de cône tronqué, à un côté opposé à ladite portion de rétrécissement (102).
  5. Dispositif selon l'une quelconque des revendications précédentes, comprenant un moyen d'étanchéité statique adapté pour éliminer une fuite de fluide à travers ledit conduit de compensation (100).
  6. Dispositif selon la revendication 5, dans lequel ledit conduit d'expansion (100) comprend une portion d'extrémité (106) délimitée par ledit moyen d'étanchéité statique.
  7. Dispositif selon la revendication 6, dans lequel ladite portion d'extrémité (106) est effilée vers ledit moyen d'étanchéité.
  8. Dispositif selon l'une quelconque des revendications 5 à 7, dans lequel ledit moyen d'étanchéité comprend une connexion entre un élargissement annulaire (18) et une projection annulaire (42).
  9. Dispositif selon la revendication 8, dans lequel ledit élargissement (18) est obtenu sur une tige annulaire (8) à travers laquelle, dans ladite configuration de distribution, le fluide devant être distribué s'écoule.
  10. Dispositif selon la revendication 9, dans lequel ladite projection annulaire (42) est en protubérance depuis une paroi de guidage tubulaire interne (36) d'un corps de support (30), et ladite tige tubulaire (8) glisse dans ladite paroi de guidage tubulaire interne (36) pendant ladite étape de distribution de fluide.
  11. Dispositif selon l'une quelconque des revendications précédentes, comprenant une membrane déformable (14) adaptée pour délimiter, au moins partiellement, une chambre de distribution (110) dans laquelle le fluide devant être distribué est maintenu dans une configuration de repos du dispositif.
  12. Dispositif selon la revendication 11, dans lequel ladite membrane (14) est en protubérance depuis une tige tubulaire (8) à travers laquelle, dans ladite configuration de distribution, le fluide devant être distribué s'écoule.
  13. Dispositif selon la revendication 11 ou 12, comprenant en plus un élément d'accouplement (20) adapté pour être relié à ladite membrane de façon à former ladite chambre de distribution (110).
  14. Dispositif selon la revendication 13, dans lequel ledit élément d'accouplement comprend un conduit de distribution (28) adapté pour placer ladite chambre de distribution (110) en communication fluidique avec l'extérieur du dispositif.
  15. Dispositif selon l'une quelconque des revendications 11 à 14, comprenant en plus un moyen de clapet de non retour adapté pour empêcher l'écoulement inverse du fluide maintenu dans ladite chambre de distribution (110) pendant ladite étape de distribution.
  16. Dispositif selon l'une quelconque des revendications précédentes, comprenant un moyen de recouvrement, adapté pour recouvrir au moins partiellement ledit moyen de pompage.
  17. Dispositif selon l'une quelconque des revendications précédentes, dans lequel ladite portion de rétrécissement est délimitée intérieurement par un élément tubulaire allongé (60) adapté pour s'étendre dans ledit contenant de façon à attirer le fluide devant être distribué et extérieurement par une paroi de compensation annulaire (54) d'un élément de compensation mobile (50).
  18. Dispositif selon la revendication 17, dans lequel ledit élément de compensation (50) comprend une plaque perforée (52) depuis laquelle ladite paroi de compensation annulaire (54) est en protubérance.
  19. Dispositif selon la revendication 18, dans lequel ladite plaque (52) est adaptée pour être associée à l'extrémité inférieure (38) d'un corps de support (30).
  20. Dispositif selon la revendication 19, comprenant un écrou à boucle fileté (2) pour relier la tête de distribution (1) au contenant.
  21. Dispositif selon la revendication 18, dans lequel ladite plaque (52) est adaptée pour être associée au bord du col de contenant.
  22. Dispositif selon la revendication 21, comprenant une liaison à baïonnette pour relier la tête de distribution (1) au contenant.
EP05425271A 2005-04-29 2005-04-29 Distributeur de liquide Active EP1716932B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES05425271T ES2315826T3 (es) 2005-04-29 2005-04-29 Dispositivo de dispensacion de liquido.
DE602005010214T DE602005010214D1 (de) 2005-04-29 2005-04-29 Flüssigkeitsspender
EP05425271A EP1716932B1 (fr) 2005-04-29 2005-04-29 Distributeur de liquide
AT05425271T ATE410238T1 (de) 2005-04-29 2005-04-29 Flüssigkeitsspender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425271A EP1716932B1 (fr) 2005-04-29 2005-04-29 Distributeur de liquide

Publications (2)

Publication Number Publication Date
EP1716932A1 EP1716932A1 (fr) 2006-11-02
EP1716932B1 true EP1716932B1 (fr) 2008-10-08

Family

ID=34943179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425271A Active EP1716932B1 (fr) 2005-04-29 2005-04-29 Distributeur de liquide

Country Status (4)

Country Link
EP (1) EP1716932B1 (fr)
AT (1) ATE410238T1 (fr)
DE (1) DE602005010214D1 (fr)
ES (1) ES2315826T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1752225B1 (fr) 2005-08-08 2008-07-23 Guala Dispensing S.P.A. Insert d'évent pour un distributeur de liquide et procédé de pose d'une membrane sur lequel
DE102007032770A1 (de) 2007-07-13 2009-01-15 Protektorwerk Florenz Maisch Gmbh & Co Kg Profilelement
IT1402728B1 (it) * 2010-11-22 2013-09-18 Guala Dispensing Spa Dispositivo di erogazione a grilletto

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161288A (en) 1976-10-05 1979-07-17 Creative Dispensing Systems, Inc. Fluid dispenser method and apparatus
ES273524Y (es) 1983-07-14 1985-04-16 Monturas Y Fornituras S.A. Pistola proyectora de liquidos
JPS61209066A (ja) 1985-03-09 1986-09-17 Canyon Corp トリガ−タイプデイスペンサ−
US6123236A (en) * 1999-04-23 2000-09-26 Owens-Illinois Closure Inc. Pump dispenser having one-piece spring and gasket
IT1307719B1 (it) 1999-10-08 2001-11-14 Guala Dispensing Spa Raccordo a baionetta perfezionato tra una pompa a spruzzo ed unflacone contenente una sostanza da spruzzare.

Also Published As

Publication number Publication date
EP1716932A1 (fr) 2006-11-02
ES2315826T3 (es) 2009-04-01
ATE410238T1 (de) 2008-10-15
DE602005010214D1 (de) 2008-11-20

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