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WO1994008889A1 - Distributeur de doses mesurees - Google Patents

Distributeur de doses mesurees Download PDF

Info

Publication number
WO1994008889A1
WO1994008889A1 PCT/US1993/008964 US9308964W WO9408889A1 WO 1994008889 A1 WO1994008889 A1 WO 1994008889A1 US 9308964 W US9308964 W US 9308964W WO 9408889 A1 WO9408889 A1 WO 9408889A1
Authority
WO
WIPO (PCT)
Prior art keywords
metered dose
chamber
wall
container
set forth
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/US1993/008964
Other languages
English (en)
Inventor
George Debush
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.)
Reseal International LP
Original Assignee
Reseal International LP
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 Reseal International LP filed Critical Reseal International LP
Priority to AU51349/93A priority Critical patent/AU5134993A/en
Publication of WO1994008889A1 publication Critical patent/WO1994008889A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/08—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the diaphragm or bellows type
    • 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
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall actuated 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/08—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the diaphragm or bellows type
    • G01F11/084—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the diaphragm or bellows type using a bulb to pressurise the fluid to be dispersed

Definitions

  • the present invention is directed to a metered dose dispenser for repeatedly dispensing selected amounts of a fluid.
  • the dispenser includes a container for the fluid to be dispensed with a metered dose chamber connected to an outlet from the container.
  • Valve means are connected to the metered dose chamber so that fluid can be drawn into the chamber from the container and then a selected amount of the fluid dispensed out of the chamber.
  • metered dose dispensers have been used for supplying a predetermined amount of a fluid or liquid from a chamber.
  • One of the problems faced in the past has been to dispense the fluid so that the fluid remaining in the metered dose chamber within the container itself is maintained free of any contamination such as oxygen, other atmospheric gases, bacteria, vapor, dust or dirt from the ambient atmosphere which could enter when the fluid is dispensed.
  • the primary object of the present invention is to provide a metered dose dispenser capable of repeatedly dispensing a selected amount of a fluid with the entire dispenser formed of recyclable plastics materials.
  • the dispenser is made up of a container for the fluid or liquid to be dispensed, a metered dose chamber, a first one-way valve for admitting fluid from the container into the chamber and a second one-way valve for dispensing a metered amount of the fluid while preventing any contaminants from entering the chamber after the completion of the dispensing step.
  • a support or housing can be provided for the collapsible container.
  • the container, the one-way valves, the metered dose chamber and the housing if it is used, can all be formed of recyclable plastic material without the inclusion of any metal parts.
  • a significant feature of the invention is the use of a one-way valve, such as or similar to the Reseal valve disclosed in the Gerber Patent No. 4,846,810, used as the second one-way valve at the outlet from the metered dose chamber so that the fluid can be dispensed and, at the same time, any contaminants from the ambient atmosphere can be prevented from flowing back into the chamber.
  • a one-way valve such as or similar to the Reseal valve disclosed in the Gerber Patent No. 4,846,810
  • the metered dose chamber can be formed of a rigid section connected to a collapsible wall section. When the collapsible wall section is completely collapsed a metered dose is dispensed from the chamber.
  • the Reseal valve at the metered dose chamber outlet can be located in the rigid wall section or in the collapsible wall section. Alternately, the chamber can be formed completely by the collapsible wall section.
  • a helical plastics spring in the wall forming the collapsible wall section.
  • the spring is formed monolithically with the collapsible wall section and assures that the collapsible wall section expands from the collapsed condition to its original expanded condition after a dose of the fluid is dispensed.
  • the action of the helical spring assures that the desired amount of fluid is drawn out of the collapsible container after each dispensing step, so that the selected metered dose is available in the chamber.
  • the helical plastics material spring can be formed of different plastic materials and its size can be varied to achieve the desired operational features of the metered dose chamber.
  • the helical spring-collapsible wall section can be arranged in different positions relative to the collapsible container or housing. The position can be selected based on ergonomical considerations.
  • the collapsible section of the metered dose chamber can be of any size compatible with the desired amount of fluid to be dispensed.
  • the helical plastics material spring can be used for a variety of collapsible tubular members for assuring the return of the member to its original position after the spring has been compressed.
  • Fig. 1 is an elevational view, partly in section, of a metered dose dispenser
  • Fig. 2 is an enlarged detail view in section of the Reseal valve
  • Fig. 3 is an axially extending sectional view of the collapsible wall section of the metered dose chamber
  • Fig. 4 is an enlarged partial sectional view taken along line 4-4 in Fig. 3 illustrating the construction of the collapsible wall
  • Fig. 5 is a partial view of the dispenser shown in Fig. 1 illustrating various positions of the Reseal valve at the dispenser outlet;
  • Fig. 6 is a view, similar to Fig. 5, displaying an alternate orientation of the collapsible wall section of the metered dose chamber;
  • Fig. 7 is an elevational view of the metered dose chamber in the collapsed condition.
  • a metered dose dispenser 1 is shown formed of a collapsible container 2 within a rigid support housing 3.
  • the container 2 has an outlet 4 with a first one-way valve 5 opening on the principle of negative pressure in the outlet for permitting flow from the container into a metered dose chamber 6.
  • the metered dose chamber 6 has a first rigid section 7 connected to the housing 3 and a bellows-like collapsible section 8 secured to and extending outwardly from the rigid section 7.
  • a second one-way valve 9 forms an outlet from the metered dose chamber 6 and extends laterally outwardly from the rigid section 7.
  • the collapsible container 2 can be in various forms, such as a bag, a bellows-like container, or the combination of the bag and a piston member movable toward the outlet as the contents of the bag are dispensed.
  • the second one-way valve 9 is similar to the Reseal valve disclosed in the Gerber Patent No. 4,846,810.
  • the valve 9 is formed of a valve body 10 with a first outlet passage 11 communicating with the material of the metered dose chamber 6 and a second outlet passage 12 extending to the outlet from the second one-way valve 9.
  • the first and second outlet passages 11, 12 are spaced from one another either in the circumferential or axial direction. As shown in Fig. 2, the passages are spaced apart in the axial direction of the valve.
  • the outlet lla from the first passage and the inlet 12a to the second passage are located through the outside surface 13 of the valve body 10.
  • An expandable membrane sleeve 14 is fitted tightly about the outer surface of the valve body 10 covering both the outlet lla and the inlet 12a.
  • the membrane sleeve 14 is sealed to the surface of the valve body 10 at its opposite ends, so that flow from the container 2 passes through the first passage 11 and its outlet lla forcing the membrane sleeve outwardly away from the valve body surface, whereby the fluid from the chamber 6 can flow through the inlet 12a of the second passage and then out through the outlet of the valve.
  • the membrane 14 no longer expanded outwardly from the valve body 10, rebounds inwardly into contact with the valve body and prevents any backward flow from the second passage 12 to the first passage 11 and then into the metered dose chamber.
  • valve body 10 is shown as an axially extending part, it is possible to use a flat disk-like part as the valve body. The important consideration is that after fluid has been dispensed, the membrane sleeve 14 is returned into surface contact with the valve body preventing any backflow from the second passage to the first passage.
  • the second valve 9 is formed completely of plastics material and ensures the sterility of the material being dispensed. This is particularly important for certain pharmaceuticals, such as eye solutions.
  • the collapsible section 8 of the metered dose chamber 6 is a bellows-like member.
  • Such a configuration is particularly desirable where the material forming the bellows member has a memory, so that it returns to the expanded position after it has been compressed for dispensing the fluid.
  • other types of collapsible sections can be employed, such as tapered tubular sections or telescoping sections.
  • the collapsible wall section 8 is formed of a bellows-like tubular wall 15 with a helical spring 16 formed monolithically with this wall.
  • the tubular wall 15 and the helical spring 16 are formed of plastics material.
  • the spring 16 assures that the tubular wall 50 returns to its expanded condition after the metered amount of the fluid has been dispensed.
  • the collapsible wall section 8 is shown in the expanded condition.
  • Fig. 4 it is shown more clearly that the spring 16 is a monolithic part of the wall 15. While the illustrated embodiment displays a bellows-like wall section 8, other types of wall sections incorporating the helical spring 16 can be used.
  • the important feature is that the spring and the rest of the dispenser is formed of recyclable plastics material.
  • Fig. 5 the metered dose chamber 6 is shown with the one-way outlet valve 9 in different positions.
  • the valve 9 extends laterally outwardly from the rigid wall section 7 of the chamber.
  • an outlet valve 9a can be positioned in the outer end of the collapsible wall section 8 or it can extend outwardly from an intermediate position, note the valve 9b, in the collapsible wall section.
  • the collapsible wall section 8 of the metered dose chamber 6 is in axial alignment with the one ⁇ way valve 5 between the chamber and the container 2 .
  • the axis of the collapsible wall section 8 can be provided at an angle to the axis of the first one-way valve 5 opening from the container into the metered dose chamber 6.
  • the metered dose dispenser 1 is capped, not shown, with the collapsible wall section 8 in a collapsed condition, note Fig. 7, with the end portion 8a located at the opening from the rigid wall section 7 into the collapsible wall section 8.
  • the fluid to be dispensed is located within the collapsible container 2 and also in the rigid wall section 7 of the metered dose chamber 6.
  • the collapsible wall section 8 expands to the condition shown in Fig. 1. As it expands, it develops a negative pressure within the metered dose chamber causing the first one-way valve 5 to open so that the metered dose chamber 6 is completely filled.
  • the dispenser is now ready to dispense the metered dose.
  • a metered dose is dispensed by pressing the collapsible wall section inwardly toward the rigid wall section 7 so that the contents within the collapsible wall section are displaced into the rigid wall section and out through the second one-way valve 9.
  • the spring 16 returns the collapsible wall section to the expanded condition shown in Fig. 1.
  • the first one-way valve 5 opens and an amount of the fluid required to fill the expanded collapsible wall section is withdrawn from the container 2 until a positive pressure is developed within the metered dose chamber 6.
  • the additional pressure developed within the metered dose chamber closes the first one-way valve 5 and the pressure developed opens the second one-way valve 9 dispensing a metered amount.
  • the metered amount is dispensed only when the collapsible wall section 8 is fully collapsed from the position shown in Fig. 1 to the position shown in Fig. 7. Due to the structure of the second one-way valve 9, after the fluid is dispensed, it is impossible for any contaminants to flow through the second one-way valve 9 back into the metered dose chamber 6.
  • a selected dose can be dispensed. It is possible that a stop or a series of stops can be provided for a selected collapse of the collapsible wall section 8, whereby the metered amount can be the full amount determined by the volume of the collapsible wall section or some fraction of that amount. When completely emptied, the entire dispenser can be recycled.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Un distributeur de doses mesurées comprend un récipient (2) destiné à un fluide devant être distribué. Le récipient (2) comprend une ouverture de sortie (4) permettant de faire passer le fluide du récipient (2) dans une chambre de dosage (6). La chambre de dosage (6) est au moins en partie composée d'une partie paroi tubulaire repliable (8). Une première soupape unidirectionnelle (5) est située entre le récipient (2) et la chambre de dosage (6). Un ressort à boudin (16) est agencé en une seule pièce avec la paroi tubulaire repliable (8) afin que celle-ci retrouve son état étendu après avoir été repliée. Le récipient (2), la chambre de dosage et toutes les parties associées sont composées de plastique recyclable et dépourvues de parties métalliques.
PCT/US1993/008964 1992-10-08 1993-09-20 Distributeur de doses mesurees Ceased WO1994008889A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51349/93A AU5134993A (en) 1992-10-08 1993-09-20 Metered dose dispenser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98830892A 1992-10-08 1992-10-08
US07/988,308 1992-10-08

Publications (1)

Publication Number Publication Date
WO1994008889A1 true WO1994008889A1 (fr) 1994-04-28

Family

ID=25534032

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/008964 Ceased WO1994008889A1 (fr) 1992-10-08 1993-09-20 Distributeur de doses mesurees

Country Status (2)

Country Link
AU (1) AU5134993A (fr)
WO (1) WO1994008889A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028257A1 (fr) * 1995-03-10 1996-09-19 Taplast Spa Pompe en plastique pour distribuer des produits a partir de recipients
US5924603A (en) * 1995-03-10 1999-07-20 Taplast Spa Pump made of plastic for dispensing products from containers
CN1077239C (zh) * 1996-07-26 2002-01-02 塔普拉斯特股份公司 对容器中的制品实施分配的塑料泵
FR2811640A1 (fr) * 2000-07-17 2002-01-18 Oreal Dispositif de conditionnement et de distribution permettant de distribuer une dose variable
WO2003048694A1 (fr) * 2001-12-03 2003-06-12 Cesare Signorini Dispositif de mesure pour sirops et autres fluides

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124275A (en) * 1964-03-10 Liquid dispensing container
CA703528A (en) * 1965-02-09 E. Eskridge Harold Combined suction pump, storage container and dispenser
US4102476A (en) * 1977-02-22 1978-07-25 Ciba-Geigy Corporation Squeeze bottle dispenser with air check valve on cover
US4863070A (en) * 1987-07-07 1989-09-05 Raimund Andris Meter pump for liquid and/or low-viscosity substances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124275A (en) * 1964-03-10 Liquid dispensing container
CA703528A (en) * 1965-02-09 E. Eskridge Harold Combined suction pump, storage container and dispenser
US4102476A (en) * 1977-02-22 1978-07-25 Ciba-Geigy Corporation Squeeze bottle dispenser with air check valve on cover
US4863070A (en) * 1987-07-07 1989-09-05 Raimund Andris Meter pump for liquid and/or low-viscosity substances

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028257A1 (fr) * 1995-03-10 1996-09-19 Taplast Spa Pompe en plastique pour distribuer des produits a partir de recipients
US5924603A (en) * 1995-03-10 1999-07-20 Taplast Spa Pump made of plastic for dispensing products from containers
CN1077239C (zh) * 1996-07-26 2002-01-02 塔普拉斯特股份公司 对容器中的制品实施分配的塑料泵
FR2811640A1 (fr) * 2000-07-17 2002-01-18 Oreal Dispositif de conditionnement et de distribution permettant de distribuer une dose variable
EP1174190A1 (fr) * 2000-07-17 2002-01-23 L'oreal Dispositif de conditionnement et de distribution permettant de distribuer une dose variable
US6758374B2 (en) 2000-07-17 2004-07-06 L'oreal Packaging and dispenser device enabling variable quantities to be dispensed
WO2003048694A1 (fr) * 2001-12-03 2003-06-12 Cesare Signorini Dispositif de mesure pour sirops et autres fluides

Also Published As

Publication number Publication date
AU5134993A (en) 1994-05-09

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