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WO2023038529A2 - Moteur pour un dispositif de distribution de liquide et dispositif de distribution de liquide comprenant un tel moteur - Google Patents

Moteur pour un dispositif de distribution de liquide et dispositif de distribution de liquide comprenant un tel moteur Download PDF

Info

Publication number
WO2023038529A2
WO2023038529A2 PCT/NL2022/050516 NL2022050516W WO2023038529A2 WO 2023038529 A2 WO2023038529 A2 WO 2023038529A2 NL 2022050516 W NL2022050516 W NL 2022050516W WO 2023038529 A2 WO2023038529 A2 WO 2023038529A2
Authority
WO
WIPO (PCT)
Prior art keywords
frame
engine
trigger
springs
piston
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/NL2022/050516
Other languages
English (en)
Other versions
WO2023038529A3 (fr
Inventor
Paulo Nervo
Lukas Jacob Willem VAN DEN HEUVEL
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.)
Dispensing Technologies BV
Original Assignee
Dispensing Technologies BV
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 Dispensing Technologies BV filed Critical Dispensing Technologies BV
Publication of WO2023038529A2 publication Critical patent/WO2023038529A2/fr
Publication of WO2023038529A3 publication Critical patent/WO2023038529A3/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
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps 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
    • B05B11/1042—Components or details
    • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material

Definitions

  • the invention relates to an engine for a liquid dispensing device, comprising a frame, a pump chamber arranged in the frame, a piston movably arranged in the pump chamber, a trigger movably connected to the frame and operatively coupled with the piston, a nozzle, an outlet channel arranged in the frame and connecting the pump chamber to the nozzle, an outlet valve operatively connected with the outlet channel, and a pair of springs mounted or mountable on opposite sides of the frame and engaging or engageable with the trigger.
  • a liquid dispensing device also called a “trigger sprayer”
  • WO 2006/073307 Al is disclosed in WO 2006/073307 Al.
  • the outlet valve is arranged in a valve chamber in the frame of the engine, and is locked in that valve chamber by an end wall that is part of a shroud.
  • This requires the shroud to be designed to withstand structural loads, which affects the required wall thickness and consequently the amount of material that is used for the shroud.
  • this means that the valve is only secured in the very last step of the assembly process, when the shroud is placed on the engine.
  • the springs of this prior art engine are integrally formed with the trigger. As a result, the trigger and the springs are made of the same material, which is not optimal, since the requirements in terms of strength and stiffness differ greatly for the trigger and the springs.
  • the invention has for its object to provide an engine for a liquid dispensing device of the type discussed above, in which these drawbacks are obviated or at least minimized.
  • this is achieved in that the springs are connected to each other by a bridge piece extending between the opposite sides of the frame and configured for securing the outlet valve to the frame.
  • the outlet valve which may be a pre-compression valve
  • the design and material of the shroud is no longer dictated by the requirement of securing the valve, so that a thinner and more lightweight shroud may be used, having a minimum number of structural features. This allows the shroud, which constitutes an important part of the engine, to be made of recycled plastics material, which may not have the same structural properties as virgin plastics material. Alternatively, if the shroud is still made from virgin plastics material, this feature allows the required amount of that material to be minimized.
  • the bridge piece is further configured for securing the springs to the frame.
  • the springs may be made from a different type of material than the trigger. Since the springs are continuously loaded, they will normally be made from virgin plastics material. However, the trigger is only loaded during dispensing, and includes a relatively larger amount of material than the springs, so that structural requirements are less severe and allow the use of recycled plastics material.
  • the bridge piece to secure the springs, they may initially be mounted on the frame without yet having to be pre -tensioned. This allows the engine to be functionally tested on the assembly line by activating the trigger and piston without stressing the springs. Plastic springs require natural aging and relaxation prior to being stressed, which will increase their operational lifetime.
  • the outlet valve may be arranged in a valve chamber in the frame, and the bridge piece may comprise a wall part for locking the outlet valve in the valve chamber. This allows the outlet valve to be securely locked in place.
  • the wall part may be secured to an outer edge of the valve chamber, e.g. by being snapped over a protruding ridge or by means of lugs being received in openings.
  • the wall part may be reinforced.
  • the wall part may have external ribs to prevent it from being deformed by the pressure in the valve chamber.
  • the bridge piece may comprise arms connecting the wall part with each of the springs, and each arm may have a stiffness that is substantially smaller than that of the corresponding spring. In this way interaction between the springs and the wall part may be prevented, even though these parts are integrally made.
  • the very flexible arms neither affect the action of the springs, nor do they exert any forces that might dislodge the wall part. Instead, the arms merely keep the springs and the wall part together before and during assembly of the engine.
  • the bridge piece may be connected to each of the springs at or near an end thereof that is mounted or mountable on the frame. In this way the main part of each spring is safeguarded against possible loading by the arms.
  • each spring has a forward end engaging or engageable with the trigger and a rear end received or receivable in a recess of the frame
  • the entire length of the spring which may be a flexure spring, may be used for generating a biasing force to act on the trigger.
  • mounting the spring by arranging one end in a recess of the frame is relatively simple.
  • an engine for a liquid dispensing device which further comprises a reinforcing member arranged at a top of the frame and extending in a lengthwise direction of the frame.
  • a reinforcing member may provide support for a shroud, which may therefore be made as a thin-walled and lightweight part. Providing such support is especially important in view of the rapid growth of e-commerce, which leads to products like liquid dispensing devices increasingly being shipped individually to consumers. Such individual shipping requires the liquid dispensing device to be sufficiently sturdy to withstand transport loads.
  • the reinforcing member may have a flat top side for cooperation with the shroud.
  • the reinforcing member may have a cross-sectional profile which provides resistance against deformation, e.g. a T-shape or an inverted U-shape.
  • the reinforcing member may be elongate and may be attached to the frame at least near its front and rear ends. In this way the reinforcing member protrudes from the top of the frame like a resilient bumper or crash structure, which may absorb transport loads before they can damage the dispensing device proper.
  • the invention provides an engine for a liquid dispensing device, wherein the trigger has a front surface facing away from the piston and including at least one concave part for engagement by a user’ s finger, and wherein the concave part is spaced from the nozzle when the trigger is in a position of rest.
  • the entire trigger is provided with concave parts separated by convex parts, which lead to the formation of a very narrow region between the nozzle and the top of the trigger, where a user’s finger may easily be caught. By providing space between the finger engagement part of the trigger and the nozzle, the formation of a narrow region is prevented.
  • the risk of pinching may be further reduced when the front surface of the trigger includes a flat part adjacent the nozzle when the trigger is in a position of rest.
  • This flat part which may extend below the nozzle, provides an even greater space between the finger engagement part of the trigger and the nozzle.
  • an engine for a liquid dispensing device in which the trigger has an at least partially spherical socket facing the piston, while the piston has an at least partially spherical connector facing the trigger, the at least partially spherical socket being configured for receiving the at least partially spherical connector.
  • This type of connection between the trigger and the piston is more compact than the one disclosed in WO 2006/073307 Al, where the trigger has transverse lugs which are snapped into apertures of the piston. Due to the compact connection mechanism, the piston can be shorter and the trigger can be kept closer to the frame, so that a user does not have to extend his finger(s) as far as with the earlier device.
  • the engine further comprises a shroud arranged over the frame and extending from the nozzle towards an end of the frame that is configured to be connected to a container for a liquid to be dispensed.
  • a shroud conceals the inner structure of the engine and can be used e.g. for branding.
  • the various features discussed above allow the shroud to be thinwalled and substantially free from structural features, so that it can be made from recycled plastics material, if so desired.
  • At least the frame and the trigger are made of recycled plastics material.
  • the use of virgin plastics material is further limited, thus improving the sustainability of the production of the engine.
  • the shroud and/or the nozzle may also be made of recycled plastics material, thus further limiting the amount of virgin plastics material that is used.
  • that closure may also be made of recycled plastics material, as may the piston.
  • the invention further relates to a liquid dispensing device which comprises a container for a liquid to be dispensed and an engine of the type discussed above connected to the container.
  • a conventional assembly method e.g. the method disclosed in WO 2006/073307 Al, comprises the steps of: a) providing a frame including a pump chamber and an outlet channel arranged therein; b) movably arranging a piston in the pump chamber; c) movably connecting a trigger to the frame and operatively coupling the trigger with the piston; d) operatively connecting an outlet valve with the outlet channel; and e) mounting a pair of springs on opposite sides of the frame and engaging the springs with the trigger.
  • the method of the present invention is distinguished from the known method by the step of: f) securing the outlet valve to the frame by means of a bridge piece which connects the springs to each other and which extends between the opposite sides of the frame.
  • a bridge piece which connects the springs to each other and which extends between the opposite sides of the frame.
  • step e) may include the substep of: el) securing the springs to the frame by means of the bridge piece. This allows the springs to be easily mounted as one.
  • step d) may include the substep of: dl) arranging the outlet valve in a valve chamber in the frame; and substep el) may include the substep of: el a) securing a wall part of the bridge piece to an outer edge of the valve chamber.
  • step e) may further include the subsequent substep of: e2) arranging a rear end of each spring in a corresponding recess of the frame and bringing a forward end of each spring into engagement with the trigger.
  • step e2 functional tests are performed on the engine after step el), and step e2) is performed only if results of the functional tests are satisfactory.
  • the functionality of the engine may be tested while the forward and rear end of the springs are still disengaged.
  • Step e2) of tensioning the springs between the trigger and the frame may be performed at a relatively late stage of manufacturing, thus prolonging the life of the springs.
  • At least the frame and the trigger may be made of recycled plastics material to reduce the amount of virgin material used and improve sustainability of the engine and circularity of its production.
  • Fig. 1 is a rear perspective view of an engine for a liquid dispensing device in accordance with the invention, with a shroud being shown in phantom for improved clarity;
  • Fig. 2 is a side view of the engine of Fig. 1 during assembly and testing, with the trigger in an operative position and with the shroud removed for reasons of clarity;
  • Fig. 3 is a longitudinal sectional view of the engine of Figs. 1 and 2, with the shroud again shown in phantom, and with the spring(s) tensioned between the frame and the trigger;
  • Fig. 4 is a view corresponding with Fig. 2, but showing the trigger in its position of rest and the spring(s) engaged between the frame and the trigger, while the shroud is shown in phantom;
  • Fig. 5 is a view corresponding with Fig. 3, but showing the trigger in its position of rest;
  • Fig. 6 is a quarter front view of the engine of Figs. 1-5;
  • Fig. 7 is a collection of views of the frame of the engine of Figs. 1-6;
  • Fig. 8 is a perspective view of the springs and bridge piece of the engine.
  • Fig. 9 is a side view of the springs and bridge piece of Fig. 8.
  • An engine 1 for a liquid dispensing device comprises a frame 2 in which a pump chamber 3 is arranged (Fig. 1).
  • a piston 4 is movably arranged in the pump chamber 3 (Fig. 3).
  • a trigger 5 is movably connected to the frame 2 and is operatively coupled with the piston 4.
  • the trigger 5 is pivotably mounted in a cylindrical opening 27 in the frame 2 by means of inwardly extending stubs (not shown).
  • a nozzle 6 is arranged at a forward end of the frame 2.
  • An outlet channel 7 which is arranged in the frame 2 connects the pump chamber 3 to the nozzle 6.
  • the engine 1 further comprises an outlet valve 8 which is operatively connected with the outlet channel 7.
  • a pair of springs 9 is mounted on opposite sides 2L, 2R of the frame 2 and engages with the trigger 5. These springs 9 are connected to each other by a bridge piece 10 which extends between the opposite sides 2L, 2R of the frame 2.
  • the springs 9 and the bridge piece are integrally made from a plastics material, e.g. by injection molding (Figs. 8, 9).
  • the bridge piece 10 has two functions. It secures the outlet valve 8 to the frame 2 and it further secures the springs 9 to the frame 2.
  • the outlet valve 8 is arranged in a valve chamber 11 which is located between an outlet 12 of the pump chamber 3 and the outlet channel 7.
  • the outlet valve 8 here has the form of a dome, which is integrally molded with a sleeve 13.
  • the dome valve 8 sealingly engages a valve seat 14 surrounding an entry of the outlet channel 7.
  • the sleeve 13 carries two annular sealing flaps 15, 16.
  • the bridge piece 10 in this example comprises a wall part 17 for locking the outlet valve 8 in the valve chamber 11.
  • the wall part 17 has a bent edge 18 which is secured to a ridge 19 protruding from an outer edge of the valve chamber 11.
  • the wall part 17 is reinforced by two orthogonal protruding ribs 20, 21.
  • the bridge piece 10 further comprises two arms 22, each of which connects the wall part 17 with one of the springs 9.
  • Each of these arms 22 has a stiffness that is substantially smaller than the stiffness of the corresponding spring 9, so that the bridge piece does 10 not transfer any loads to the springs 9, and does not affect their biasing function.
  • the bridge piece 10 is connected to each of the springs 9 at or near an end 23 of each spring that is mounted on the frame 2.
  • each spring 9 has a forward end 24 that is configured to engage with the trigger 5 when the engine 1 is fully assembled and operational, as well as a rear end 23 that can be received in a recess 25 of the frame 2.
  • the forward end 24 is shown to be substantially triangular, for fitting engagement in a pocket of the trigger 5, and has a protruding part 26 with which the forward end 24 of the spring 9 may be locked in the trigger 5.
  • the rear end 23 of the spring 9 is shown to be cylindrical, so as to allow a slight pivoting movement in the recess 25, which is cylindrical as well.
  • the springs 9 have an inverted U- shaped cross section, consisting of two webs 48 and a top flange 49.
  • the inverted U-shape results in a very efficient distribution of material in locations where it provides an optimum contribution to resilience and stress resistance of each spring 9.
  • the springs 9 are initially secured to the frame 2 by means of the bridge piece 10. When the wall part 17 of the bridge piece 10 is snapped over the outer edge of the valve chamber 11, the springs 9 are connected to the frame 2, even if their ends 23 are not yet received in the recesses 25 - as shown in circle R in Fig. 2.
  • This arrangement in which the forward ends 24 of the springs 9 are not yet connected to the trigger 5 - as shown in circle F in Fig. 2 - allows the engine to undergo some functional testing during assembly, without applying any load or stress to the springs 9.
  • the engine 1 further comprises a reinforcing member 28 arranged at a top of the frame 2 and extending in a lengthwise direction of the frame 2.
  • the reinforcing member 28 is shown to be elongate here and is attached to the frame 2 near its front end 29 and near its rear end 30. In this embodiment there is also a third attachment 31 near the rear end 30.
  • the elongate reinforcing member 28 serves as a support for an upper part 50 of a shroud 32. It is resiliently deformable, and can bend downward in the direction of the frame 2 when subjected to a load from the top, as illustrated by the dashed line 28’ in Fig. 4.
  • a front surface 33 of the trigger 5, which faces away from the piston 4, includes a concave part 33 A for engagement by a user’s finger.
  • the concave part 33A is spaced from the nozzle 6.
  • the front surface 33 may include a flat part 33B, which is arranged such that it is adjacent the nozzle 6 when the trigger 5 is in a position of rest. In this way the risk of a user’ s finger being pinched between the trigger 5 and the nozzle 6 may be reduced.
  • the trigger 5 is operatively coupled with the piston 4.
  • the trigger 5 has a partially spherical socket 34 facing the piston 4 and the piston 4 has a partially spherical connector 35 facing the trigger 5 (Fig. 3).
  • the partially spherical socket 34 is configured for receiving the partially spherical connector 35.
  • This connector 35 is integrally formed with a piston rod 36, which in turn is integrally formed with the piston 4.
  • the partially spherical socket 34 defines an inscribed angle of more than 180D, so that its edge 37 defines an opening that is smaller than the maximum diameter of the spherical part of the connector 35. This allows the connector 35 to be snapped into the socket 34 and securely held. In this way the connector 35 and socket 34 act as a ball joint for converting the pivoting motion of the trigger 5 into a linear motion of the piston 4.
  • the engine 1 further comprises a shroud 32.
  • the shroud 32 is arranged over the frame 2 to cover the various parts of the engine 1. On the one hand this protects these parts from outside influences, while on the other hand the parts are hidden from sight to create an aesthetically pleasing exterior.
  • the shroud 32 is shown to extend from the nozzle 6 towards an end 38 of the frame 2 that is configured to be connected to a container 39 for a liquid to be dispensed.
  • the shroud 32 is made as a single piece, but it may be assembled from more than one piece.
  • the various novel features of the engine 1 discussed above allow the shroud to be a thin-walled and lightweight part without any structural support features. Since the shroud 32 is so thin, it is supported at the top of the frame 2 by the reinforcing member 28. Because the shroud 32 does not have to perform any load bearing functions, it can be made of a relatively low-grade material like e.g. recycled plastics material. Alternatively, the shroud 32 could be made from virgin plastics material, precisely because it is so thin and lightweight.
  • the shroud 32 is wrapped closely around the engine 1 so as to minimize the amount of material required. The only exception is at the rear of the engine 1, where the shroud has a protruding part 40 that comes to rest on a user’ s hand when the engine 1 is used, so as to enable a strong and stable grip.
  • the end 38 of the frame 2 that is to be connected to the dispenser 39 is shown to include a conventional annular closure 41 having internal threading 42 for cooperation with external threading on a neck of the container 39.
  • the engine 1 further includes a gasket 43 arranged around a plug-type lower edge 44 of the engine 1 , which is configured to be fittingly inserted into the container neck.
  • the engine 1 and container 39 form a liquid dispensing device.
  • connection mechanisms like e.g. a bayonet connection or a snap connection.
  • the closure 41 will be provided with internal bayonet or snap features like e.g. lugs or hooks.
  • the engine 1 is further shown to include a dip tube 45 which extends into the container 39 and debouches in an opening 46 in the frame 2, which is surrounded by the annular sealing flaps 15, 16. Local deformation of the sealing flap 15 will bring the opening 46 into fluid communication with an inlet 47 of the pump chamber 3, so that liquid from the container 39 may be drawn into the pump chamber 3.
  • the design and structure of the engine 1 allow many parts to be made from recycled plastics material, thus reducing the carbon footprint of the liquid dispensing device in which it is used.
  • At least the frame 2 and the trigger 5, but preferably also the shroud 32, the nozzle 6, the piston 4 and the closure 41 are made from recycled plastics material, e.g. polyethylene (PE) like LDPE or HDPE, polypropylene (PP) or polyethylene terephthalate (PET).
  • PE polyethylene
  • PP polypropylene
  • PET polyethylene terephthalate

Landscapes

  • Reciprocating Pumps (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne un moteur pour un dispositif de distribution de liquide, comprenant : un cadre ; une chambre de pompe placée dans le cadre ; un piston placé mobile dans la chambre de pompe ; un déclencheur relié mobile au cadre et accouplé de manière fonctionnelle au piston ; une buse ; un canal de sortie placé dans le cadre et reliant la chambre de pompe à la buse ; une soupape de sortie fonctionnellement reliée au canal de sortie ; et une paire de ressorts montés ou pouvant être montés sur des côtés opposés du cadre et venant en prise ou pouvant venir en prise avec le déclencheur ; les ressorts étant reliés l'un à l'autre par une pièce de pont s'étendant entre les côtés opposés du cadre et conçus pour fixer la soupape de sortie au cadre. L'invention concerne en outre un procédé d'assemblage d'un moteur pour un dispositif de distribution de liquide, comprenant les étapes consistant à : fournir un cadre comprenant une chambre de pompe et un canal de sortie placé à l'intérieur de celle-ci ; agencer mobile un piston dans la chambre de pompe ; relier mobile un déclencheur au cadre et accoupler de manière fonctionnelle le déclencheur au piston ; relier de manière fonctionnelle une soupape de sortie avec le canal de sortie ; et monter une paire de ressorts sur des côtés opposés du cadre et mettre en prise les ressorts avec le déclencheur ; la soupape de sortie étant fixée au cadre au moyen d'une pièce de pont qui relie les ressorts l'un à l'autre et qui s'étend entre les côtés opposés du cadre.
PCT/NL2022/050516 2021-09-13 2022-09-13 Moteur pour un dispositif de distribution de liquide et dispositif de distribution de liquide comprenant un tel moteur Ceased WO2023038529A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2029181A NL2029181B1 (en) 2021-09-13 2021-09-13 Engine for a liquid dispensing device and liquid dispensing device including such engine
NL2029181 2021-09-13

Publications (2)

Publication Number Publication Date
WO2023038529A2 true WO2023038529A2 (fr) 2023-03-16
WO2023038529A3 WO2023038529A3 (fr) 2023-04-20

Family

ID=79018977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2022/050516 Ceased WO2023038529A2 (fr) 2021-09-13 2022-09-13 Moteur pour un dispositif de distribution de liquide et dispositif de distribution de liquide comprenant un tel moteur

Country Status (3)

Country Link
CN (1) CN219651843U (fr)
NL (1) NL2029181B1 (fr)
WO (1) WO2023038529A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006073307A1 (fr) 2005-01-10 2006-07-13 Afa Polytek B.V. Dispositif de dosage a paroi mince comportant une gachette moulee de facon solidaire et un ressort et son procede d’assemblage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08224509A (ja) * 1994-12-24 1996-09-03 Canyon Corp ポンプディスペンサ−およびその組立方法
JPH10174916A (ja) * 1996-12-18 1998-06-30 Yoshino Kogyosho Co Ltd トリガー式液体噴出ポンプ
JP3647614B2 (ja) * 1997-07-28 2005-05-18 株式会社吉野工業所 トリガー式液体噴出ポンプ
US20040222243A1 (en) * 2003-05-08 2004-11-11 Saint-Gobain Calmar Inc. Low-cost, in-line trigger operated pump sprayer
US7497358B2 (en) * 2006-03-15 2009-03-03 Meadwestvaco Calmar, Inc. Trigger sprayer with integral piston rod and bowed spring
JP6839510B2 (ja) * 2016-09-15 2021-03-10 ライオン株式会社 噴出器
JP7370174B2 (ja) * 2019-05-31 2023-10-27 株式会社吉野工業所 トリガー式液体噴出器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006073307A1 (fr) 2005-01-10 2006-07-13 Afa Polytek B.V. Dispositif de dosage a paroi mince comportant une gachette moulee de facon solidaire et un ressort et son procede d’assemblage

Also Published As

Publication number Publication date
NL2029181B1 (en) 2023-03-23
WO2023038529A3 (fr) 2023-04-20
CN219651843U (zh) 2023-09-08

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