WO2024246355A1 - Unité de pompe et distributeur de fluide comprenant une unité de pompe de ce type - Google Patents

Unité de pompe et distributeur de fluide comprenant une unité de pompe de ce type Download PDF

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Publication number
WO2024246355A1
WO2024246355A1 PCT/EP2024/065139 EP2024065139W WO2024246355A1 WO 2024246355 A1 WO2024246355 A1 WO 2024246355A1 EP 2024065139 W EP2024065139 W EP 2024065139W WO 2024246355 A1 WO2024246355 A1 WO 2024246355A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
pump
return spring
pump unit
end position
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.)
Ceased
Application number
PCT/EP2024/065139
Other languages
German (de)
English (en)
Inventor
Jürgen Greiner-Perth
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.)
Aptar Radolfzell GmbH
Original Assignee
Aptar Radolfzell GmbH
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 Aptar Radolfzell GmbH filed Critical Aptar Radolfzell GmbH
Priority to KR1020257042991A priority Critical patent/KR20260018881A/ko
Priority to CN202480036236.2A priority patent/CN121219081A/zh
Publication of WO2024246355A1 publication Critical patent/WO2024246355A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material
    • 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
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure

Definitions

  • the invention relates to a pump unit for a liquid dispenser and a liquid dispenser with such a pump unit.
  • a generic pump unit is part of a liquid dispenser, for example a liquid dispenser for pharmaceutical liquids or possibly also cosmetic liquids.
  • the pump unit is designed to suck liquid from a liquid reservoir and to apply pressure to it through a discharge opening for the purpose of discharge.
  • the discharge takes place in particular in the form of a spray jet, but can also take the form of an unatomized jet or in the form of individual drops.
  • Pump units of this type are usually intended for manual actuation, in particular for actuation in the form of pressing down an actuating button, on which in particular the discharge opening can also be provided.
  • Pump units of this type are usually provided with a return spring which, after actuation and a usually associated reduction in the volume of a pump chamber, combined with a discharge of the liquid, pushes the pump unit back into its initial position and in doing so displaces a pump piston back to its initial position.
  • the return spring was usually designed as a metal spring.
  • many liquid dispensers now use a plastic spring. This makes recycling easier, as there is no need to separate the metal components from the plastic.
  • the object of the invention is to provide a pump unit and a dispenser with such a pump unit, wherein the pump unit has a return spring which simultaneously ensures the desired functioning of the pump unit and enables easy recycling.
  • a pump unit for a liquid dispenser and a liquid dispenser with such a pump unit are proposed.
  • the pump unit is described below in particular.
  • the embodiments equally relate to a liquid reservoir with such a pump unit.
  • the pump unit according to the invention has a pump cylinder and a pump piston which is movable relative to the pump cylinder between an unactuated end position and an actuated end position.
  • the pump cylinder has, at least in one section, a cylindrical sealing surface in the region of which the pump piston rests against this sealing surface in a circumferentially sealing manner.
  • a pump chamber surrounded by the pump cylinder and the pump piston has its maximum volume in the non-actuated end position and its minimum volume in the actuated end position.
  • liquid is pumped out of the pump chamber in the direction of a discharge opening.
  • liquid is sucked from a liquid reservoir into the pump chamber.
  • the pump unit has an inlet valve at a liquid inlet of the pump chamber and an outlet valve at a liquid outlet of the pump chamber.
  • the outlet valve is open and the inlet valve is closed.
  • the outlet valve is closed and the inlet valve is open at least in phases, so that liquid is sucked into the pump chamber through the liquid inlet.
  • the outlet valve is preferably a valve that opens depending on the overpressure in the pump chamber.
  • the inlet valve can be opened depending on the negative pressure in the pump chamber or depending on the distance.
  • the pump unit has a return spring, by means of which the pump piston is subjected to force in the direction of the non-actuated end position.
  • This spring acts between the housing or in particular the pump cylinder of the pump unit on the one hand and the pump piston on the other, whereby the return spring can be mounted on components attached to the pump cylinder and the pump piston instead of on the pump cylinder and the pump piston.
  • the pump piston itself can also be an integral part of the return spring, as will be explained below.
  • this return spring is designed in a special way.
  • the return spring is designed as a tension spring and is arranged in such a way that a cylinder-side end and a piston-side end of the return spring are spaced apart from one another in a longitudinal direction when the pump chamber is reduced in size, thereby creating or increasing a state of tension in the return spring.
  • the piston is thus spaced apart from the cylinder-side end of the return spring and the bearing area there, so that the return spring as a whole is subjected to tension.
  • the return spring is designed as a cage spring at least in sections. This means that the area of the return spring designed as a cage spring or, if applicable, the return spring designed as a cage spring as a whole has a circumferential wall with a cylindrical or conical basic shape. Openings are provided in this wall which has a structure with node pieces and spring bars connecting the node pieces.
  • the design of the return spring as a tension spring has the advantage that the shape of the spring is defined when tensioned by actuation. With compression springs, however, there is the problem that that they can deviate in a way that is not always easy to predict and can therefore impair the function of the dispenser.
  • the cage spring has proven to be particularly well suited to ensuring a defined positional behavior of the return spring when actuated. The deformation of the return spring can be controlled very precisely by specifically strengthening or weakening node pieces and/or spring bars.
  • a cage spring usually has node pieces in its wall which, due to the arrangement of the openings, are integrally connected to spring bars with adjacent node pieces or with areas of the return spring adjacent to the cage spring.
  • the cage spring preferably has at least four node pieces, from which at least three spring bars extend to other node pieces or to areas of the return spring adjacent to the cage spring.
  • at least eight such node pieces are preferably provided, or even twelve or more such node pieces.
  • the cage spring has spring bars which are integrally attached to a common node piece and which are spread apart as the ends of the return spring are spaced apart, thereby causing a bending deformation in the respective node piece.
  • the return spring with such spring bars which spread out under load is preferably shaped in such a way that it stores a significant part of the energy introduced by actuation in the form of bending deformation, i.e. by a deformation in which spring bars and nodes of the cage spring are deformed in such a way that compression occurs on one side and expansion occurs on an opposite side.
  • the energy applied during actuation does not have to be stored exclusively by the bending deformation in the nodes or spring bars.
  • bending deformation and other elastic deformations can occur in other parts of the return spring. It is considered advantageous if, in a tensioned state of the return spring, Arrangement of the pump piston in the actuated end position a proportion of at least 50% of the spring energy of the return spring is stored in the bending deformation of the node pieces and the spring bars, preferably a proportion of at least 80%.
  • the wall of the cage spring has spring bars cut free on both sides through openings, with preferably between 8 and 200 openings and particularly preferably between 12 and 100 openings being provided. Preferably, at least three such spring bars are formed by the openings, but particularly between 12 and 72 spring bars.
  • the return spring is at least partially made of a polyolefin, preferably polyethylene.
  • the return spring is made entirely of polyolefin.
  • the return spring is made as a 2K part. In such a case, preferably at least the cage spring is made of polyolefin.
  • the cage spring has a structure of openings and intermediate node pieces and spring bars.
  • an elastic deformation by bending takes place in the node pieces, whereby the bending deformation of the node pieces also includes the bending deformation in the transition sections of the spring bars that immediately adjoin the node pieces.
  • two spring bars that are connected in one piece to a node piece are connected by a rounded transition on the node piece, preferably with a minimum rounding radius of more than 0.5 mm, in particular more than 1.0 mm. This transition radius is considered to be part of the node piece in the sense of the invention.
  • the cage spring preferably has openings which are each delimited by four spring bars, namely two upper and two lower spring bars.
  • a lower and an upper spring bar each form two spring bars which are connected to the side of the opening by a node piece.
  • the upper and lower spring bars form spring bars which are each connected to one another in a central position relative to the opening by further node pieces.
  • the openings are defined by a total of four node pieces and a total of four spring bars.
  • the cage spring preferably has a circumferential structure of node pieces and connecting spring bars, in which the spring bars are connected to node pieces at both ends and In particular, at least some node pieces preferably each carry at least two pairs of spring bars.
  • the node pieces are preferably arranged one behind the other in the longitudinal direction in the form of rows, with preferably 4, 6 or 8 rows of node pieces being provided and distributed over the circumference of the cage spring.
  • At least one of the node pieces, which carry two pairs of spring bars, preferably has a cross-section in a plane orthogonal to the longitudinal direction with a shape that tapers in the direction of a central axis of the return spring.
  • Two lateral flanks of the node piece are therefore not aligned parallel, but are angled radially with respect to the central axis of the cage spring or even beyond the radial alignment.
  • the cross-section of the node piece can have a triangular cross-sectional area.
  • the opposite alignment with a shape that tapers in the direction away from a central axis or the parallel alignment of the flanks can also be advantageous depending on the specific shape of the cage spring and the conditions in production.
  • Such a stabilizing ring can be useful in a cage spring to connect node pieces that are arranged on a common geometric plane orthogonal to the longitudinal axis, thus reducing the tendency of the node pieces to deviate outwards or inwards during actuation. Instead, the position of the node pieces relative to one another remains largely unchanged and the energy stored in the return spring is stored primarily via the deformation of the spring bars.
  • the openings which are usually surrounded by knot pieces and four spring bars, can be provided in various special shapes.
  • a preferred design provides that the cage spring has openings which form a clear distance in the longitudinal direction in lateral areas that is greater than a central clear distance in the longitudinal direction.
  • the clear distance in the longitudinal direction is preferably zero centrally in the non-actuated state of the return spring, which means that the opposing surfaces of the return spring do not rest against one another only in two lateral areas of the opening in the non-actuated state.
  • the design described is particularly suitable for achieving a high degree of deformation without damaging the return spring.
  • the return spring component is preferably provided with rounded sections in order to prevent the return spring from tearing when actuated.
  • the spring bars on a common node preferably form an angle that is between 5° and 50° larger than an angle that the spring bars form when the pump cylinder and the pump piston are arranged in the non-actuated end position.
  • a straight line that runs through nodes connected by means of a spring bar forms an angle of less than 10° with a plane orthogonal to the longitudinal direction when the pump unit is in the non-actuated state and an angle of more than 10° when the pump unit is in the actuated state.
  • the pump unit has an outlet pipe which projects from a discharge side into an inner region of the return spring.
  • the outlet pipe is preferably provided in a fixed position relative to an actuating handle by means of which the pump unit is manually actuated.
  • the coupling between the return spring and the outlet pipe takes place in the inner region of the return spring.
  • the outlet pipe and the return spring preferably have interacting stop surfaces so that the return spring can be stretched by means of the outlet pipe when it is pressed down.
  • the stop surfaces can be aligned orthogonally to a direction of displacement of the outlet pipe. It is particularly advantageous if at least one and preferably both stop surfaces have a conical or otherwise widening shape. The stop surfaces can thus engage with one another. In such a case, the outlet pipe is, as it were, hooked into the stop surface of the return spring.
  • an outlet valve can be carried out in particular using an outlet pipe of the type described or of another type.
  • the pump unit therefore preferably has an outlet pipe which is inserted into the return spring.
  • a valve component is provided on this outlet pipe. This can in particular be designed as a separate component which can be attached to the outlet pipe and in particular inserted here.
  • the valve component preferably forms a valve surface of the outlet valve, which, when the outlet valve is closed, rests in the region of a lower end of the return spring and/or on an inner side of the pump piston. If the pressure in the pump chamber is sufficiently high, the return spring or the pump piston is elastically expanded so that the contact is lost and the outlet valve is thereby opened.
  • the valve component can alternatively or additionally also be part of the inlet valve. For this purpose, it is preferably provided that the liquid inlet is provided in a base of the pump cylinder and that a section of the valve component moves into the liquid inlet when the outlet pipe is pressed down or moves within the liquid inlet and thereby closes the inlet valve. This is particularly useful if a discharge delayed compared to the actuation of the pump unit is desired, as will be explained below.
  • the return spring has at least one outwardly projecting bearing element at one end to form the cylinder-side spring bearing, for example in the form of a circumferential bearing ring.
  • the return spring is secured to the pump cylinder in a longitudinal direction by means of this bearing element, whereby contact surfaces can be provided on the bearing element and on the pump cylinder for this purpose.
  • the contact surface on the bearing element and/or the contact surface on the pump cylinder are aligned orthogonally to an actuation direction to form a stepped structure or are provided with a chamfer to prevent the bearing element from sliding off the pump cylinder.
  • the pump unit is constructed in such a way that the pump unit has a cylinder housing and a housing cover to form the pump cylinder.
  • the cylinder housing preferably has two cylindrical sections with different inner diameters in the longitudinal direction, namely a return spring section with a larger diameter to accommodate the cage spring of the return spring and a pump chamber section with a smaller diameter, the diameter of the pump chamber section being adapted to the outer diameter of the pump piston at least in sections to limit the pump chamber.
  • the housing cover is intended to close the pump unit and in particular its return spring section at the top. It can be provided with an opening through which an actuating tappet protrudes, preferably in the form of the outlet pipe already mentioned.
  • the outlet valve of the pump unit is preferably a pressure-dependent opening outlet valve, i.e. a valve which opens when a design-specified limit pressure in the pump chamber has been reached.
  • the liquid reservoir preferably has a total volume of less than 100 ml, in particular less than 50 ml.
  • the liquid reservoir is preferably filled with a pharmaceutical or cosmetic liquid.
  • the pump piston 50 is provided at the lower end of the return spring 70 or at the outlet pipe 60 and has a piston lip 52 which, during operation, rests at least in phases against a cylindrical wall of the cylinder housing 32.
  • the pump piston 50 is designed as the distal end of the return spring 70, but could also be designed as a separate part and be mechanically connected to the return spring. If the lower end 74 of the return spring 70 is pressed down by means of the outlet pipe 60, the pump piston 50 is also pressed down and the pump chamber 12 delimited thereby is isolated and subsequently reduced in size.
  • the cylinder housing 32 has a pump chamber region 32A that is adapted to the diameter of the pump piston 50. In the exemplary embodiment, this delimits the pump chamber 12 together with the pump piston 50.
  • an internal groove 32C is provided in the pump chamber area 32A, which means that the pump piston 50 in this area does not yet isolate the pump chamber 12 below the pump piston 50 from the spring area 32B. If the pump piston 50 is therefore pressed down starting from the non-actuated end position of Fig. 2, this only leads to an isolation of the pump chamber 12 when the lower end of the groove 32C is passed over by the pump piston. Until then, the reduction in size of the pump chamber 12 means that the liquid contained therein is pressed through the groove 32C into the spring area 32B of the cylinder housing 32, from where it can return to the liquid reservoir 110 through an outflow opening 32D.
  • the inlet valve 16 is designed as a pressure-dependent plate valve, which has a limitedly movable valve plate, which is pressed downwards by excess pressure in the pump chamber and thereby closes the liquid inlet 14.
  • the outlet valve 20 is formed by a valve surface 50A on the inside of the pump piston 50 and by a valve component 64, which is inserted into the outlet pipe 60 from below and while maintaining a clear cross-section.
  • the outlet valve 20 opens when the pressure in the pump chamber 12 is sufficient to expand the pump piston 50 to such an extent that contact with the conical valve surface 20A of the valve component 64 is lost and liquid can flow from the pump chamber 12 into the liquid outlet 18.
  • the discharge ends at the latest when the actuated end position of the discharge head 90 is reached. Depending on the design, this may be the case when the pump piston 50 strikes the lower end of the cylinder housing 32, when another stop on the side of the discharge head 90 and the outlet pipe 60 strikes a stop surface or when the inlet valve 16 is opened in a path-dependent manner towards the end of the actuation.
  • the piston lip 52 hits the lower end of the pump chamber 12, causing the piston lip 52 to deform and thus forcing the outlet valve to open.
  • This is advantageous because it also causes the outlet valve 20 to open automatically when the dispenser is started up, when there is still compressible air in the pump chamber and the outlet valve 20 does not open depending on the pressure, and the air can therefore escape from the pump chamber 12.
  • the liquid dispenser 100 If the force applied to the discharge head 90 is removed at the end of the actuation, the liquid dispenser 100 returns to its starting position.
  • the return spring 70 or its spring area 80 which is under tension as a whole, shortens again and pulls the pump piston 50 upwards. Due to the outlet valve 20 now being closed, this causes a negative pressure in the pump chamber 12, the inlet valve 16 opens and liquid is sucked in from the liquid reservoir 110. At the same time, the outlet pipe 60 and thus the discharge head 90 are also pushed back upwards.
  • spring bars 79 are connected in several, usually two or four at a time, to node pieces 82 of the cage springs.
  • the spring bars 79 extend at least in the circumferential direction. If the return spring is stretched as a whole, this does not result in individual sections of the spring being stretched by the same distance or to the same extent. Instead, bending deformations occur, primarily in the area of the node pieces 82, but also partly in the area of the spring bars 79 themselves.
  • the first design of Fig. 3A has a total of 16 openings 78 and 28 spring bars 79 as well as 16 node pieces 82.
  • the openings 78 each have an oval shape, so that the spring bars 79 already have an oblique orientation in relation to the longitudinal direction 2 in the unstretched state of the entire spring.
  • the third design in Fig. 3A also provides a total of 16 openings 78, 28 spring bars 79 and 16 node pieces 82.
  • the openings 78 are again shaped differently. In the relaxed state, they each consist of two circular partial openings that are connected by a slot, in the area of which the spring bars 79 above and below the opening 78 lie directly against each other.
  • the aforementioned circular partial openings also mean that no notch effect occurs.
  • openings 78, 28 spring bars 79 and 16 node pieces 82 are again provided.
  • the openings are designed in the form of narrow slots, the opposite edges of which do not lie against one another in the relaxed state shown.

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une unité de pompe (10) pour un distributeur de fluide (100). Une unité de pompe (10) de ce type comporte un cylindre de pompe (30) et un piston de pompe (50), qui peut être déplacé par rapport au cylindre de pompe (30) entre une position d'extrémité non actionnée et une position d'extrémité actionnée. L'unité de pompe (10) comporte également une vanne d'entrée (16) au niveau d'une entrée de fluide (14) et une vanne de sortie (20) au niveau d'une sortie de fluide (18), ainsi qu'un ressort de rappel (70) avec lequel le piston de pompe (50) est actionné de force dans la direction de la position d'extrémité non actionnée. Selon l'invention, le ressort de rappel (70) se présente sous la forme d'un ressort de traction et est agencé de telle sorte qu'une extrémité côté cylindre (72) du ressort de rappel (70) et une extrémité côté piston (74) du ressort de rappel (70) sont espacées l'une de l'autre dans une direction longitudinale lorsque la chambre de pompe (12) diminue en taille, générant ou renforçant ainsi un état de tension dans le ressort de rappel (70). Au moins des sections du ressort de rappel (70) se présentent sous la forme d'un ressort à cage, qui présente une paroi (77) ayant une forme de base cylindrique ou conique. La paroi (77) du ressort à cage présente une structure formée par des perforations (78), avec des pièces nœuds (82) et des barres de ressort (79) reliant les pièces nœuds (82).
PCT/EP2024/065139 2023-06-02 2024-06-02 Unité de pompe et distributeur de fluide comprenant une unité de pompe de ce type Ceased WO2024246355A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020257042991A KR20260018881A (ko) 2023-06-02 2024-06-02 펌프 유닛 및 이러한 유형의 펌프 유닛을 포함하는 유체 분배기
CN202480036236.2A CN121219081A (zh) 2023-06-02 2024-06-02 泵单元和具有这样的泵单元的液体分配器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23177045.4 2023-06-02
EP23177045.4A EP4470676A1 (fr) 2023-06-02 2023-06-02 Unité de pompage et distributeur de liquide comprenant une telle unité de pompage

Publications (1)

Publication Number Publication Date
WO2024246355A1 true WO2024246355A1 (fr) 2024-12-05

Family

ID=86688731

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/065139 Ceased WO2024246355A1 (fr) 2023-06-02 2024-06-02 Unité de pompe et distributeur de fluide comprenant une unité de pompe de ce type

Country Status (4)

Country Link
EP (1) EP4470676A1 (fr)
KR (1) KR20260018881A (fr)
CN (1) CN121219081A (fr)
WO (1) WO2024246355A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267673A (en) 1991-03-11 1993-12-07 Daniel Crosnier Dosing device which can be placed on various containers
US5788124A (en) 1995-04-13 1998-08-04 Sofab Device for packaging and dispensing a liquid or semi-liquid substance
US6227414B1 (en) 1998-11-27 2001-05-08 Lir France Device for dispensing liquid, fluid or pasty products
US20020043540A1 (en) 1999-10-26 2002-04-18 L'oreal Pump for fitting to a receptacle, the pump including an elastically deformable membrane outside the pump chamber
US20050006412A1 (en) * 2003-05-16 2005-01-13 L'oreal Device for packaging and dispensing a product, notably in the form of a sample
CN103029895A (zh) 2011-09-30 2013-04-10 丁要武 具有弹性拉伸复位装置的液体泵
US8622254B2 (en) 2009-01-14 2014-01-07 Sungil Kang Dispensing pump with resilient biasing member
WO2022136609A1 (fr) * 2020-12-22 2022-06-30 Alpla Werke Alwin Lehner Gmbh & Co. Kg Distributeur à pompe
DE102021122705A1 (de) * 2021-05-20 2022-11-24 Aptar Dortmund Gmbh Feder aus Kunststoff und Abgabevorrichtung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267673A (en) 1991-03-11 1993-12-07 Daniel Crosnier Dosing device which can be placed on various containers
US5788124A (en) 1995-04-13 1998-08-04 Sofab Device for packaging and dispensing a liquid or semi-liquid substance
US6227414B1 (en) 1998-11-27 2001-05-08 Lir France Device for dispensing liquid, fluid or pasty products
US20020043540A1 (en) 1999-10-26 2002-04-18 L'oreal Pump for fitting to a receptacle, the pump including an elastically deformable membrane outside the pump chamber
US20050006412A1 (en) * 2003-05-16 2005-01-13 L'oreal Device for packaging and dispensing a product, notably in the form of a sample
US8622254B2 (en) 2009-01-14 2014-01-07 Sungil Kang Dispensing pump with resilient biasing member
CN103029895A (zh) 2011-09-30 2013-04-10 丁要武 具有弹性拉伸复位装置的液体泵
WO2022136609A1 (fr) * 2020-12-22 2022-06-30 Alpla Werke Alwin Lehner Gmbh & Co. Kg Distributeur à pompe
DE102021122705A1 (de) * 2021-05-20 2022-11-24 Aptar Dortmund Gmbh Feder aus Kunststoff und Abgabevorrichtung

Also Published As

Publication number Publication date
KR20260018881A (ko) 2026-02-09
CN121219081A (zh) 2025-12-26
EP4470676A1 (fr) 2024-12-04

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