EP1095871B1 - Pompe destinée à équiper un récipient, comportant une membrane élastiquement déformable à l'extérieur de la chambre de pompage - Google Patents

Pompe destinée à équiper un récipient, comportant une membrane élastiquement déformable à l'extérieur de la chambre de pompage Download PDF

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Publication number
EP1095871B1
EP1095871B1 EP00402979A EP00402979A EP1095871B1 EP 1095871 B1 EP1095871 B1 EP 1095871B1 EP 00402979 A EP00402979 A EP 00402979A EP 00402979 A EP00402979 A EP 00402979A EP 1095871 B1 EP1095871 B1 EP 1095871B1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
fact
pump according
moving assembly
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.)
Expired - Lifetime
Application number
EP00402979A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1095871A1 (fr
Inventor
Gilles Baudin
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.)
LOreal SA
Original Assignee
LOreal SA
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 LOreal SA filed Critical LOreal SA
Publication of EP1095871A1 publication Critical patent/EP1095871A1/fr
Application granted granted Critical
Publication of EP1095871B1 publication Critical patent/EP1095871B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1026—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem the piston being deformable and its deformation allowing opening of the outlet
    • 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
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1076—Traction springs, e.g. stretchable sleeve
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material

Definitions

  • the present invention relates to a pump according to the preamble of claim 1, intended to equip a container, having a pump body and a movable assembly relative to this body, comprising a piston sealingly applying to the body and defining with this last a pumping chamber of variable volume.
  • French patent FR-A-2,708,314 discloses such a pump comprising also outside the pumping chamber an elastically deformable arranged to recall the moving assembly in its initial position after the dispensing a dose of product.
  • This pump causes the distribution of the product contained in the chamber of pumping as soon as the pressure in this room starts to increase as a result of the downward movement of the moving assembly.
  • US-A-4,607,765 forms the closest prior art and discloses a pump comprising a rod traversed by a channel, one of which end can be closed by a seal mounted around the stem, the seal being axially mobile with respect to this rod.
  • the invention aims in particular to meet this need.
  • the pump according to the invention is characterized in that the moving assembly has a stem having an interior passage for the evacuation of the contained product in the pumping chamber, this inner passage opening through at least one orifice in the latter and that the piston is movable relative to the rod between a pre-compression position in which it closes the outlet orifice (s) and a dispensing position in which it releases the at least one orifices, the displacement of the piston from its pre-compression position to its dispensing position taking place under the effect of the pressure of the product in the pumping chamber.
  • the pumping chamber communicates with inside the container via a conduit that is closed off by the assembly mobile at the beginning of his shift to distribute a dose of product.
  • the moving assembly is shaped to engage in a manner sealed in the aforementioned conduit to seal it.
  • the membrane advantageously comprises a sealing skirt applying to the rests tightly by a face on a corresponding bearing surface of the mobile assembly, for closing an air intake passage made between the membrane and the moving assembly, this sealing skirt being able to move away from said bearing surface when a depression is created on its opposite side, so as to allow an entrance air in the container.
  • the latter is indeed open only when the inside of the container is at a pressure less than the pressure prevailing outside of it.
  • the moving assembly comprises an annular rib on which clings the membrane, this rib being provided with at least one slot allowing a return of air.
  • an air intake hole is made in the pump body, this air intake hole being separated from the inside of the pump body by the piston when the moving assembly is in its initial position, the piston allowing a communication between the air intake hole and the inside of the pump body above of the piston when the moving assembly is displaced by a predetermined stroke in the pump body to reduce the volume of the pumping chamber.
  • the piston is attached to the rod.
  • the piston is returned to its pre-compression position by a spring.
  • the piston is arranged to deform elastically to release the outlet or openings.
  • the piston advantageously comprises an annular wall sealable to apply sealingly to the pump body and to the stem to isolate the outlet orifice (s) from the pumping chamber during filling of the latter, and an elastically deformable return wall, resting on the rod and able to deform elastically to allow the displacement of the annular wall sealing and establishing communication between the at least one outlet and the pumping chamber, when dispensing a dose of product.
  • the deformation of said return wall is advantageously effected under the effect product pressure in the pumping chamber.
  • the piston may have in axial section a general shape of ⁇ , ⁇ , or X for example.
  • the abovementioned return wall is supported on a shoulder of the rod.
  • the mobile assembly has an end in harpoon shape, snapped into a housing of the pump body.
  • the subject of the invention is also a container equipped with a pump such that defined above.
  • the pump 10 shown in FIG. 1 is intended to be mounted on a container R, of which only the C-neck has been shown.
  • the pump 10 comprises a pump body 11 and an assembly 20, movable by relative to the pump body 11 along an axis X.
  • the body 11 has a cylindrical wall 12 of revolution about the axis X, provided in the upper part with a flange 13 for hanging on the neck C of the R. container
  • the wall 12 is connected at its lower end to a bottom wall 14 crossed at its center by an orifice 15.
  • a cylindrical duct 16 of revolution about the X axis connects to the upper face of the bottom wall 14.
  • a tip 18, also cylindrical in revolution about the axis X, is connected to the underside of the bottom wall 14, for fixing a dip tube not shown, extending to the bottom of the container R when the pump 10 is intended to be used upside down.
  • An air intake hole 17 is made at approximately mid-height of the wall 12.
  • the moving assembly 20 comprises a hollow rod 21 of axis X, defining a internal passage 22 for the product outlet.
  • the moving assembly 20 also comprises a piston 30, the latter comprising an annular wall 31 extending substantially perpendicular to the axis X, extended downwards by a tubular wall 32, annular sealing lips upper 33 and lower 34 being respectively formed at the junction of the walls 31 and 32 and at the lower end of the wall 32.
  • the lips 33 and 34 are sealingly applied to the inner surface of the wall 12.
  • the rod 21 comprises below the level of the wall 31 of the piston 30 a lower part 24 whose outer surface 24a, cylindrical of revolution around the X axis has a diameter corresponding to the inside diameter of the duct 16.
  • the inner passage 22 opens through a radial orifice 26 on the surface 24a.
  • the lower part 24 is extended downwards by a hooking portion 27 in the form of a harpoon, whose lower end 28 has a shoulder 29 coming rest, as shown in Figure 1, on the underside of the bottom wall 14 around the orifice 15.
  • a deformable elastic membrane 50 has a central portion 52 engaged on the rod 21.
  • the latter comprises, above the level of the wall 31 of the piston 30, a annular rib 40 whose lower part forms a notch 41 open towards the bottom, serving to attach the central portion 52 of the membrane 50.
  • the membrane may be made of a material chosen from the following list: nitrile elastomer, silicone elastomer, BUNA (registered trademark), elastomers vulcanized, thermoplastic elastomers.
  • the piston may be made of a material chosen from the following list: LDPE, EVA, EMA, SANTOPRENE (registered trademark).
  • the intermediate portion 23 of the rod 21 which extends between the rib 40 and the wall 31 of the piston has a diameter slightly greater than that of the rod above of rib 40.
  • the rib has a radial slot 42 which extends downward on a part of the height of the central part 52 of the membrane forming a passage 43.
  • the thickness of the passage 43 corresponds to the difference between the outside diameter of the rod 21 above the rib 40 and that of its intermediate portion 23.
  • the membrane 50 is shaped at its upper part 51 to hang on the upper end 19 of the wall 12, above the flange 13.
  • the central portion 52 of the membrane 50 is shaped to engage in the indentation 41 at its upper end and it comprises in the lower part a skirt 53, whose lower end is applied by a face 53b to the surface 23 of the intermediate portion 23 below the lower end of the passage 43, so that this passage is closed.
  • the central part 52 of the membrane 50 is connected to the upper part 51 by an inclined wall 55 substantially conical diverging upwards.
  • the piston 30 defines with the pump body 11 below the wall 31 a pumping chamber 60.
  • the rod 21 has at its upper end a housing 25 whose bottom serves as a seat for a ball 70, so as to constitute a valve.
  • the rod 21 is engaged in a conventional push-button, not shown, which also serves to retain the ball 70 in the housing 25.
  • the membrane 50 is engaged on the rod 21 by the high, so as to position the central portion 52 in the notch 41 of the rib 40.
  • the moving assembly 20, provided with the membrane 50, is then engaged from above in the pump body 11 until the bottom end 28 of the part gripping 27 crosses by elastic deformation the orifice 15.
  • the membrane 50 is then slightly stretched, so that the shoulder 29 bears on the underside of the bottom wall 14, as shown in FIG. figure 1.
  • the air intake hole 17 is located between the annular lips 33 and 34 of the piston 30 and is thus isolated from the inside of the pump body.
  • the operation of the pump is as follows.
  • the user moves down the set mobile 20.
  • the outer surface 24a of the lower portion 24 of the rod 21 comes quickly apply against the inner surface of the conduit 16, which isolates the pumping chamber 60 of the orifice 15, as shown in FIG.
  • the membrane 50 is stretched and stores elastic energy allowing remember, when the user releases the push button, the mobile assembly 20 in its initial position.
  • the ball 70 is then pressed into the bottom of the housing 25 and prevents a air intake through the interior passage 22.
  • a depression is created in the pumping chamber 60 and when the part lower 24 of the rod 21 leaves the conduit 16, a dose of product is sucked through of the orifice 15.
  • FIG. 4 shows a pump 110 according to the invention comprising a pump body 11 and a membrane 50 identical to those of the pump 10 just described.
  • the pump 110 comprises a mobile assembly 120 which comprises a hollow rod 121 and a piston 130.
  • the moving assembly 120 differs from the moving assembly 20 by the absence of a valve ball 70 and in that the piston 130 is not made in one piece by molding with the rod 121 but is in the form of an insert, movable by compared to the stem 121.
  • the lower part 24 and the part of the rod used for fastening the membrane 50 are identical to those of the rod 21.
  • the rod 121 has just above the lower part 24 a throat annular 122 upper delimited by a shoulder 123 and below by a shoulder 124.
  • the bottom of the groove 122 is cylindrical of revolution about the axis X, of diameter smaller than that of the lower part 24.
  • the inner passage 22 opens through several radial orifices 126 in the bottom of the groove 122 near the shoulder 124.
  • the piston 130 has a central disc portion 131 provided on its periphery of two upper and lower sealing lips 132 and 133, directed respectively upwards and downwards, applying in a leaktight manner to the inner surface of the wall 12.
  • the central wall 131 of the piston 130 slides along the axis X sealingly on the back of the throat 122.
  • a helical return spring 137 working in compression, is supported by its upper end on the shoulder 123 and at its lower end on the face upper part of the central part 131 to return the piston 130 moving towards the low.
  • the operation of the pump 110 is as follows.
  • the pump 110 is said to be pre-compressed because the product contained in the pumping chamber 60 may leave it for distribution only from the when the pressure in the pumping chamber 60 exceeds a limit predetermined.
  • the pump 110 makes it possible to distribute the product with a pressure predetermined minimum, which is advantageous when the pushbutton is equipped a spray nozzle.
  • the mobile assembly 120 goes back under the action of the membrane 50, the piston 130 coming to close the orifices 126, so that that the air is prevented from being sucked into the pumping chamber 60.
  • the pump 210 according to the invention and shown in FIG. 5 is of the type to pre-compression just like the pump of Figure 4 and differs simply by the that the mobile assembly 220 comprises a deformable piston 230 instead of the piston 130 and the return spring 137.
  • the piston 230 has in axial section a general shape of ⁇ , with in lower part an annular wall formed by the union of two portions 231 and 236, which apply respectively to their free ends 232 and 233 on the surface interior of the wall 12 and in the bottom of the groove 122.
  • the piston 230 comprises at its upper part an elastically wall deformable 234 supporting its upper end on the shoulder 123 and connecting by its lower end to the junction of the portions 231 and 236.
  • the piston 230 is applied by the end 233 to the shoulder 124 and isolates the orifices 126 from the pumping chamber 60.
  • the end 233 of the portion 231 passes above the level of the orifices 126, so that the product contained in the pumping chamber 60 can gain the passage inside 22 of the stem 121.
  • the deformable piston can be made with various shapes without leaving the frame of the present invention.
  • FIGS. 7 and 9 show two variants of pump 310 and 410 comprising moving assemblies 320 and 420 and in which the piston does not have a shape of ⁇ but a form of ⁇ and X respectively.
  • the en-shaped piston 330 of the pump 310 has a central portion 331 shaped> whose upper 332 and lower 333 ends connect respectively to two portions 334 and 335.
  • the upper ends 332 and lower 333 apply respectively to the rest against the shoulders 123 and 124.
  • portions 334 and 335 are applied to the surface inside the wall 12, respectively above and below the air intake hole 17 when the pump is at rest, as shown in Figure 7.
  • the deformation is sufficient for the lower end 333 is applied to the rod 121 above the outlet orifices 126, which allows the product to gain the interior passage 22.
  • the X-shaped piston 430 of FIG. 9 has two lower portions 435 and 436 which apply by their ends respectively on the rod 121 and on the wall 12, and two upper portions 433 and 434 which apply respectively to the shoulder 123 and on the wall 12.
  • the portion 432 bears on the shoulder 124.

Landscapes

  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP00402979A 1999-10-26 2000-10-26 Pompe destinée à équiper un récipient, comportant une membrane élastiquement déformable à l'extérieur de la chambre de pompage Expired - Lifetime EP1095871B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9913346A FR2800132B1 (fr) 1999-10-26 1999-10-26 POMPE DESTINEE A EQUIPER UN RECIPIENT, COMPORTANT UNE MEMBRANE ELASTIQUEMENT DEFORMABLE A l'EXTERIEUR DE LA CHAMBRE DE POMPAGE
FR9913346 1999-10-26

Publications (2)

Publication Number Publication Date
EP1095871A1 EP1095871A1 (fr) 2001-05-02
EP1095871B1 true EP1095871B1 (fr) 2005-02-09

Family

ID=9551350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00402979A Expired - Lifetime EP1095871B1 (fr) 1999-10-26 2000-10-26 Pompe destinée à équiper un récipient, comportant une membrane élastiquement déformable à l'extérieur de la chambre de pompage

Country Status (8)

Country Link
US (2) US6390338B1 (ja)
EP (1) EP1095871B1 (ja)
JP (2) JP2001193665A (ja)
AT (1) ATE288857T1 (ja)
CA (1) CA2324489C (ja)
DE (1) DE60018009T2 (ja)
ES (1) ES2235802T3 (ja)
FR (1) FR2800132B1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101631624B (zh) * 2007-03-12 2013-03-27 瓦卢瓦有限合伙公司 流体产品分配泵和具有该泵的分配器

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Publication number Priority date Publication date Assignee Title
US7597922B2 (en) * 1999-05-18 2009-10-06 Nestec S.A. System for dispensing a liquid beverage concentrate
FR2800132B1 (fr) * 1999-10-26 2002-03-08 Oreal POMPE DESTINEE A EQUIPER UN RECIPIENT, COMPORTANT UNE MEMBRANE ELASTIQUEMENT DEFORMABLE A l'EXTERIEUR DE LA CHAMBRE DE POMPAGE
FR2810646B1 (fr) * 2000-06-23 2002-10-04 Valois Sa Distributeur de produit fluide a reservoir echancre
AU2002328625A1 (en) * 2002-08-16 2004-03-03 Advanex Inc. Pump unit and container
FR2848617B1 (fr) * 2002-12-16 2006-03-17 Oreal Pompe et recipient ainsi equipe
FR2852302B1 (fr) * 2003-03-13 2006-07-14 Valois Sas Organe de distribution de produit fluide et distributeur de produit fluide comprenant un tel organe
US20040222243A1 (en) * 2003-05-08 2004-11-11 Saint-Gobain Calmar Inc. Low-cost, in-line trigger operated pump sprayer
KR100525455B1 (ko) * 2003-11-26 2005-11-04 쓰리애플즈코스메틱스 주식회사 노즐헤드 하강형 진공타입 화장품 용기의 정량 토출구조
DE102005009295A1 (de) * 2004-07-13 2006-02-16 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung für Medien
FR2885963A1 (fr) * 2005-05-17 2006-11-24 Valois Sas Pompe de distribution de produit fluide, et dispositif de distribution comportant une telle pompe.
US8187227B2 (en) * 2006-11-01 2012-05-29 Medela Holding Ag Self returning contamination barrier
WO2010082771A2 (ko) * 2009-01-14 2010-07-22 Kang Sungil 내용물 배출펌프
EP2859959B1 (en) * 2013-10-14 2019-08-07 Yonwoo Co., Ltd. Dispenser for sucking back contents remaining in the nozzle outlet
US10034583B2 (en) 2016-03-04 2018-07-31 Gpcp Ip Holdings Llc Dispenser with stroke adjustment capabilities

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FR2786467B1 (fr) * 1998-11-27 2001-02-02 Lir France Sa Dispositif de distribution de produits liquides, fluides ou pateux
FR2800132B1 (fr) * 1999-10-26 2002-03-08 Oreal POMPE DESTINEE A EQUIPER UN RECIPIENT, COMPORTANT UNE MEMBRANE ELASTIQUEMENT DEFORMABLE A l'EXTERIEUR DE LA CHAMBRE DE POMPAGE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101631624B (zh) * 2007-03-12 2013-03-27 瓦卢瓦有限合伙公司 流体产品分配泵和具有该泵的分配器

Also Published As

Publication number Publication date
CA2324489C (fr) 2004-09-14
ES2235802T3 (es) 2005-07-16
JP2001193665A (ja) 2001-07-17
JP2004286034A (ja) 2004-10-14
DE60018009D1 (de) 2005-03-17
EP1095871A1 (fr) 2001-05-02
US20020043540A1 (en) 2002-04-18
FR2800132A1 (fr) 2001-04-27
US6619513B2 (en) 2003-09-16
FR2800132B1 (fr) 2002-03-08
ATE288857T1 (de) 2005-02-15
DE60018009T2 (de) 2006-03-30
CA2324489A1 (fr) 2001-04-26
US6390338B1 (en) 2002-05-21

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