US3727806A - Valve assemblies for aerosol containers - Google Patents

Valve assemblies for aerosol containers Download PDF

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Publication number
US3727806A
US3727806A US00252898A US3727806DA US3727806A US 3727806 A US3727806 A US 3727806A US 00252898 A US00252898 A US 00252898A US 3727806D A US3727806D A US 3727806DA US 3727806 A US3727806 A US 3727806A
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US
United States
Prior art keywords
hollow body
container
valve
valve member
chamber
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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
US00252898A
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English (en)
Inventor
K Wilmot
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NEOTECHNIC ENG Ltd
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NEOTECHNIC ENG Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/52—Valves specially adapted therefor; Regulating devices for metering
    • B65D83/54—Metering valves ; Metering valve assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/42—Filling or charging means
    • B65D83/425—Delivery valves permitting filling or charging

Definitions

  • Containers of the type of present interest are usually used to dispense expensive substances such as cosmetic and medical preparations, and the problem of wastage is thus particularly aggravating, as the loss of even a very small portion of the contents can be extremely costly, especially in the case of certain medical and medico-surgical preparations.
  • a valve assembly comprises a casing member adapted to form at least the top portion of an aerosol container, a hollow body secured to the inside of said casing member, an elongate valve member sealingly extending through respective' apertures in the casing member and hollow body for longitudinally inward movement during a dispensing operation from an outer position with respect to the casing member, outlet and inlet passages formed in the valve member adjacent to the outer and inner ends thereof, respectively, and operative for connecting a chamber formed by the space inside the hole low body around the valve member with the outside and inside, respectively, of the container and arranged such that in the outer position only the inlet passage is operative and such that when the valve member is moved by more than a predetermined amount inwardly the inlet passage becomes non-operative and the outlet passage becomes operative, a second hollow body having one end closed and secured to the inner end of the valve member, the second hollow body enclosing the first hollow body and forming a capillary gap between the two bodies which, in the outer position, extend
  • the container with which the valve assembly is used When the container with which the valve assembly is used is nearly empty, it is inverted, i.e. disposed in its normal dispensing position, and the liquid contents are drawn up through the capillary gap, through the second passage and into the chamber inside the first hollow body, ready for dispensing.
  • the capillary gap extends up from near where the first hollow body is secured to the casing member, i.e. the bottom of the container when it is inverted, virtually all of the contents can be drawn up through the capillary gap and wastage is minimized.
  • the first hollow body is desirably secured to an outwardly extending portion of the casing member of reduced area.
  • the increase in the volume of the space between the first and second hollow bodies which takes place as the valve member and the second hollow body move inwardly, causes the liquid contents of the container, provided the container is inverted, to be drawn in through the capillary gap to fill the space.
  • the said space decreases in volume and the liquid therein is pumped through the second passage into the chamber.
  • the stroke of the longitudinal movement of the second hollow body during a dispensing operation and the internal area of the second hollow body are such that during dispensing the increased space defined between the first and second bodies is at least of the same order of volume as the chamber, whereby liquid drawn through the capillary gap and into the increased space during inward movement of the second hollow body will be urged into the chamber and fill at least the major portion of the chamber upon outward movement of the second hollow body.
  • Provision of the second hollow body gives rise to the further advantage that, as it occupies a somewhat greater area than the elongate valve member, as it must do to enclose the first hollow body, it produces greater agitation of the contents of the container than would the valve member alone, were the second hollow body not provided. As the contents of the container are often medical preparations suspended in a propellant, agitation of the contents is desirable to ensure correct concentration of the sprayed dose dispensed.
  • FIG. 1 is an axial sectional view of an aerosol container incorporating a valve assembly in accordance with the present invention, the valve assembly being shown in the outer, non-operative position;
  • FIG. 2 is a view corresponding to FIG. 1 but showing the valve in the operative position.
  • the illustrated aerosol container comprises a cap portion 10 having a downwardly extending flange portion 11 attached, e.g. by swaging or rolling, to a main body portion 12 of the container.
  • a tight seal between the cap 10 and the container body 12 is ensured by.the provision of a sealing washer 13 which is clamped between the cap 10 and the body 12.
  • a longitudinally outwardly extending portion 14 of the cap 10 of smaller area than the rest of the cap has an aperture 15 in the center thereof.
  • a generally cylindrical hollow body 16 is secured inside the portion 14, an outwardly directed flange 17 on the outward end of the body 16 being held in place by an inwardly swaged part 18 of the portion 14 and by a resilient sealing diaphragm 19 which is entrapped between the body 16 and a circular inward deformation 20 of the top of the portion 14 of the cap 10.
  • An elongate valve stem 22 extends through the aperture in the portion 14 and through an aperture 23 in the inward end of the hollow body 16.
  • the diaphragm 19 and a sealing washer 24 seal the passage of the valve stem 22 through the apertures 15 and 23, respectively, the washer 24 only fully sealing passage of the stem when the stem has been moved inwards sufficiently far towards the FIG. 2 position such that an axial groove 32 in the surface of the stem does not pass through the washer.
  • a helical coil spring 15 which acts against a shoulder 26 on the valve stem 22 at one end, and against the sealing washer 24 at the other end, biases the valve 22 into the outer position shown in FIG. 1.
  • the spring 25 serves to hold the washer 24 in position.
  • the valve stem 22 is provided at the outer end with an outlet passage 28 for communicating a chamber 29 defined between the hollow body 16 and the valve stem 22 with the outside of the container.
  • the outlet passage 28 comprises an axial part 30 in communication with a radial part 31.
  • the stem 22 is also provided at the inner end with an inlet passage consisting of the groove 32 in the surface thereof extending part of the way outwardly from the inner end.
  • the stem 22 also has fitted to its outer end an operating knob 33.
  • the knob 33 has a passage 34 communicating with the outlet passage 28 in the duct 22, whereby the dispensed contents of the container can be directed where required.
  • a second generally cylindrical body 36 is secured to the inner end of the valve stem 22 by means of a portion of reduced diameter 37 which is an interference fit thereon.
  • the inside of the hollow member 36 is of the same configuration as the outside of the first-mentioned hollow body 16 whereby a capillary gap is formed between the two, the gap extending inwardly from a flange 38 at the outer end of the body 36 to the aperture 23 in the end closure of the hollow body 16.
  • the flange 38 is spaced apart from a radial flange portion 39 of the ho]- low body 16 which joins the main cylindrical portion and the outwardly axially directed flange 17.
  • the flange portion 39 has three equally spaced holes 40 therethrough, two of which can be seen in the drawing. These holes 40, which are not essential to the present invention, are provided for the pressure filling of the container.
  • the manner in which the container is filled using the holes 40 is fully described in our copending U.K. Patent application Ser. No. 50240/69: suffice it to say for present purposes that when the container is to be filled, the valve stem 22 is moved inwardly to the FIG.
  • the illustrated container is operative to dispense metered shots of the contents, each shot being of a predetermined volume comprising the liquid contents stored within the chamber 29, as follows. Starting from the position of FIG. 1 and assuming that the chamber 29 is full, the container is inverted into its dispensing disposition and the operating knob 33 is depressed whereby the various parts of the valve-assembly take up the positions shown in FIG. 2. During such movement, the outlet passage 28 in the stem 22, which previously only communicated atmosphere to atmosphere, connects the chamber 29 to atmosphere via the conduit 34 in the knob 33. The inlet passage 32, which previously communicated the capillary gap and thus the container with the chamber 29, is isolated from the chamber 29.
  • the liquid contents of the container are drawn up through the capillary gap between the hollow bodies 16 and 36 and into the space 42 between them, due to the pumping action caused by the formation of this space during the inward movement of the valve stem 22 from the position of FIG. 1 to the position of FIG. 2.
  • the knob 33 is arranged such that the stroke of the movement, coupled with the internal area of the hollow body 36, are such that the space 42 is of the same order of volume as the chamber 29.
  • the chamber 29 was not filled in the above manner during the previous dispensing operation, it can be filled by simply leaving the container in the inverted position, whereupon capillary attraction will cause the liquid contents to be drawn up through the capillary gap and along the groove 32 into the chamber 29 until.
  • valve assembly Various modifications of the valve assembly described above are possible within the scope of the present invention.
  • the valve parts are normally made of stainless steel, it is possible for at least the outer hollow body 36 to be made of nylon.
  • the passages in the valve stem to not have to take exactly the form shown.
  • the single groove 32 forming the inlet passage could be replaced by a series of grooves spaced around the valve 22 or even by reducing the diameter of the inner end portion of the stem 22 to form an annular passage, provided, in the latter case, that means are provided for guiding the valve stem 22 during its travel.
  • a valve assembly comprising a casing member adapted to form at least the top portion of an aerosol container, a hollow body secured to the inside of said casing member, an elongate valve member sealingly extending through respective apertures in said casing member and said hollow body for longitudinally inward movement during a dispensing operation from an outer position with respect to the casing member, means defining outlet and inlet passages in said valve member adjacent to the outer and inner ends thereof, respectively, and operative for connecting a chamber formed by the space inside said hollow body around said valve member with the outside and inside, respectively, of said container and arranged such that in said outer position only the inlet passage is operative and such that when said valve member is moved by more than a predetermined amount inwardly the inlet passage becomes non-operative and the outlet passage becomes operative, a second hollow body having one end closed and secured to the inner end of said valve member, said second hollow body enclosing said first hollow body and forming a capillary gap between the two bodies which, in said outer position, extends along said first
  • valve assembly defined in claim 1 wherein said first hollow body has a cylindrical external configuration and said second hollow body has a cylindrical internal configuration whereby said capillary gap includes an elongate annular portion.
  • valve assembly defined in claim 2 wherein said valve member is arranged coaxially with said first and second hollow bodies and said aperture in said first hollow body is located centrally of an inner end closure.
  • valve assembly defined in claim 3 wherein said second hollow body has a portion of reduced diameter at the inner end thereof inside which said inner end of said valve member is fitted.
  • valve assembly defined in claim 1 including means defining the stroke of said longitudinal movement of said second hollow body during a dispensing operation, said stroke and the internal area of said second hollow body being such that during dispensing the increased space defined between said first and second bodies is at least of the same order of volume as said chamber, whereby liquid drawn through said capillary gap and into said increased space during inward movement of said second hollow body will be urged into said chamber and fill at least the major portion of the chamber upon outward movement of said second hollow body.
  • valve assembly defined in claim 1 wherein said first hollow body is secured to an outwardly extending portion of said casing member of smaller area than the rest of the casing member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
US00252898A 1971-05-19 1972-05-12 Valve assemblies for aerosol containers Expired - Lifetime US3727806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1590271*[A GB1336379A (en) 1971-05-19 1971-05-19 Valve assemblies for pressurised aerosol-dispensing containers

Publications (1)

Publication Number Publication Date
US3727806A true US3727806A (en) 1973-04-17

Family

ID=10067615

Family Applications (1)

Application Number Title Priority Date Filing Date
US00252898A Expired - Lifetime US3727806A (en) 1971-05-19 1972-05-12 Valve assemblies for aerosol containers

Country Status (7)

Country Link
US (1) US3727806A (de)
CH (1) CH547108A (de)
DE (1) DE2223471C3 (de)
FR (1) FR2138144B1 (de)
GB (1) GB1336379A (de)
IT (1) IT957925B (de)
NL (1) NL152221B (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407481A (en) * 1980-05-16 1983-10-04 Neotechnic Engineering Limited Valve assembly for a pressurized aerosol-dispensing container
DE3420096A1 (de) * 1983-08-03 1985-02-21 Aerosol Inventions and Development S.A. AID S.A., Freiburg/Fribourg Ventil fuer die gleichzeitige ausgabe von zwei unter druck stehenden fluessigen substanzen und mit einem solchen ventil ausgestattete aerosol-verpackung
US4679555A (en) * 1984-08-07 1987-07-14 Key Pharmaceuticals, Inc. Method and apparatus for intrapulmonary delivery of heparin
WO1988007010A1 (en) * 1987-03-13 1988-09-22 Riker Laboratories, Inc. Aerosol valve
US4819834A (en) * 1986-09-09 1989-04-11 Minnesota Mining And Manufacturing Company Apparatus and methods for delivering a predetermined amount of a pressurized fluid
US4953759A (en) * 1989-04-14 1990-09-04 Vernay Laboratories, Inc. Metering valve for dispensing aerosols
WO1992011190A2 (en) * 1990-12-21 1992-07-09 Minnesota Mining And Manufacturing Company Device for delivering an aerosol
EP0616953A1 (de) * 1993-03-23 1994-09-28 Minnesota Mining And Manufacturing Company Dosierventil für Aerosolbehälter
US5474758A (en) * 1993-07-28 1995-12-12 Minnesota Mining And Manufacturing Company Seals for use in an aerosol delivery device
US5775321A (en) * 1993-04-30 1998-07-07 Minnesota Mining And Manufacturing Company Seal configuration for aerosol canister
US6006745A (en) * 1990-12-21 1999-12-28 Minnesota Mining And Manufacturing Company Device for delivering an aerosol
US20040139965A1 (en) * 2002-09-06 2004-07-22 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20040139966A1 (en) * 2002-09-06 2004-07-22 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20080224082A1 (en) * 2004-12-15 2008-09-18 Richard Warby Valves
AU2003270338B2 (en) * 2002-09-06 2008-09-25 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20100300437A1 (en) * 2007-05-10 2010-12-02 Sivigny Michael B Manufacture of metered dose valve components

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506803A (en) * 1982-08-09 1985-03-26 Hoffmann-La Roche Inc. Metered aerosol dispenser and method of using the dispenser
DE3802498A1 (de) * 1988-01-28 1989-08-03 Boehringer Ingelheim Kg Vorrichtung zur erhoehung der dosierungssicherheit von aerosolpraeparaten auf suspensionsbasis
GB9214819D0 (en) * 1992-07-13 1992-08-26 Minnesota Mining & Mfg Valve assemblies
ES2124870T3 (es) * 1993-01-19 1999-02-16 Glaxo Group Ltd Distribuidor de aerosol y procedimiento de fabricacion.
GB2357493B (en) * 1999-12-22 2002-01-09 Bespak Plc Improvements in valves for pressurised dispensing containers
GB0302812D0 (en) 2003-02-07 2003-03-12 Wickham Mark D Metering valves for dispensers
GB2417024B (en) 2004-08-11 2007-01-03 Bespak Plc Improvements in metering valves for dispensers
GB201311034D0 (en) 2013-06-20 2013-08-07 3M Innovative Properties Co Valve for pressurized metered dose dispensers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781954A (en) * 1955-04-07 1957-02-19 Delta Dynamics Inc Metering valve
US2856105A (en) * 1954-08-16 1958-10-14 Lawrence T Ward Spray valve
US2886217A (en) * 1957-05-20 1959-05-12 Riker Laboratories Inc Dispensing device
FR1194379A (de) * 1959-11-09
US3104785A (en) * 1963-09-24 Metering valve for pressure packages
US3511418A (en) * 1968-07-29 1970-05-12 Risdon Mfg Co Variable capacity aerosol metering valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980301A (en) * 1958-09-02 1961-04-18 Riker Laboratories Inc Metering valve for aerosol container
GB872187A (en) * 1958-11-10 1961-07-05 Risdon Mfg Co Metering valves for pressurised containers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1194379A (de) * 1959-11-09
US3104785A (en) * 1963-09-24 Metering valve for pressure packages
US2856105A (en) * 1954-08-16 1958-10-14 Lawrence T Ward Spray valve
US2781954A (en) * 1955-04-07 1957-02-19 Delta Dynamics Inc Metering valve
US2886217A (en) * 1957-05-20 1959-05-12 Riker Laboratories Inc Dispensing device
US3511418A (en) * 1968-07-29 1970-05-12 Risdon Mfg Co Variable capacity aerosol metering valve

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407481A (en) * 1980-05-16 1983-10-04 Neotechnic Engineering Limited Valve assembly for a pressurized aerosol-dispensing container
DE3420096A1 (de) * 1983-08-03 1985-02-21 Aerosol Inventions and Development S.A. AID S.A., Freiburg/Fribourg Ventil fuer die gleichzeitige ausgabe von zwei unter druck stehenden fluessigen substanzen und mit einem solchen ventil ausgestattete aerosol-verpackung
US4679555A (en) * 1984-08-07 1987-07-14 Key Pharmaceuticals, Inc. Method and apparatus for intrapulmonary delivery of heparin
US4819834A (en) * 1986-09-09 1989-04-11 Minnesota Mining And Manufacturing Company Apparatus and methods for delivering a predetermined amount of a pressurized fluid
WO1988007010A1 (en) * 1987-03-13 1988-09-22 Riker Laboratories, Inc. Aerosol valve
US4953759A (en) * 1989-04-14 1990-09-04 Vernay Laboratories, Inc. Metering valve for dispensing aerosols
WO1992011190A2 (en) * 1990-12-21 1992-07-09 Minnesota Mining And Manufacturing Company Device for delivering an aerosol
WO1992011190A3 (en) * 1990-12-21 1992-08-20 Minnesota Mining & Mfg Device for delivering an aerosol
US5290539A (en) * 1990-12-21 1994-03-01 Minnesota Mining And Manufacturing Company Device for delivering an aerosol
US6006745A (en) * 1990-12-21 1999-12-28 Minnesota Mining And Manufacturing Company Device for delivering an aerosol
EP0673857A3 (de) * 1990-12-21 1995-10-11 Minnesota Mining & Mfg
US5477992A (en) * 1993-03-23 1995-12-26 Minnesota Mining And Manufacturing Company Metered-dose aerosol valves
EP0616953A1 (de) * 1993-03-23 1994-09-28 Minnesota Mining And Manufacturing Company Dosierventil für Aerosolbehälter
US5775321A (en) * 1993-04-30 1998-07-07 Minnesota Mining And Manufacturing Company Seal configuration for aerosol canister
US6036942A (en) * 1993-04-30 2000-03-14 3M Innovative Properties Company Seal configuration for aerosol canister
US5474758A (en) * 1993-07-28 1995-12-12 Minnesota Mining And Manufacturing Company Seals for use in an aerosol delivery device
US7234460B2 (en) * 2002-09-06 2007-06-26 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20040139966A1 (en) * 2002-09-06 2004-07-22 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20040139965A1 (en) * 2002-09-06 2004-07-22 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US7299801B2 (en) 2002-09-06 2007-11-27 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20080047556A1 (en) * 2002-09-06 2008-02-28 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
AU2003270338B2 (en) * 2002-09-06 2008-09-25 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US7748378B2 (en) 2002-09-06 2010-07-06 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20080224082A1 (en) * 2004-12-15 2008-09-18 Richard Warby Valves
US20100300437A1 (en) * 2007-05-10 2010-12-02 Sivigny Michael B Manufacture of metered dose valve components

Also Published As

Publication number Publication date
FR2138144A1 (de) 1972-12-29
DE2223471C3 (de) 1978-09-14
GB1336379A (en) 1973-11-07
NL152221B (nl) 1977-02-15
DE2223471A1 (de) 1972-11-30
CH547108A (de) 1974-03-29
NL7206528A (de) 1972-11-21
FR2138144B1 (de) 1973-07-13
DE2223471B2 (de) 1977-12-29
IT957925B (it) 1973-10-20

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