CA1252439A - Valve assembly for a pressurized aerosol dispensing container - Google Patents
Valve assembly for a pressurized aerosol dispensing containerInfo
- Publication number
- CA1252439A CA1252439A CA000452804A CA452804A CA1252439A CA 1252439 A CA1252439 A CA 1252439A CA 000452804 A CA000452804 A CA 000452804A CA 452804 A CA452804 A CA 452804A CA 1252439 A CA1252439 A CA 1252439A
- Authority
- CA
- Canada
- Prior art keywords
- metering tank
- aerosol container
- shroud
- valve
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
Abstract
Abstract A valve assembly which allows pressure filling of an aerosol container and dispensing of metered volumes of material therefrom, The assembly includes a casing member, a first hollow body secured inside of the casing member to define a metering tank, an elongate valve member sealingly extending through respective apertures in the casing member and the metering tank, and a second hollow body retained upon and forming a shroud around the metering tank, The metering tank has a pressure filling valve comprising an aperture in the metering tank covered by a sealing member.
The shroud and the metering tank define at least one passage through which material from the aerosol container can pass into the metering tank when the elong ate valve member is in a closed position,
The shroud and the metering tank define at least one passage through which material from the aerosol container can pass into the metering tank when the elong ate valve member is in a closed position,
Description
This invention relates to valve assemblies for pressurized aerosol-dispensing containers and in particular to a valve assembly which allows pressure filling of an aerosol container and dispensing of metered volumes therefrom.
Pressurized aerosol-dispensing containers, commonly referred to as "aerosol containers", are in widespread use for dispensing cosmetic, medical and other preparations. In some cases, particularly when dispensin~
medical preparations, it is important that the amount of the ureparation which is dispensed is a predetermined accurat~ volume each time the aero~sol container is activated, Additionally, many of the active ingredients in the preparations are expensive and accordingly it is important that there should be no wastage of the contents o~ the container.
There are several types of known valve assemblies for aerosol containers which are designed to dispense a metered quantity of the contents of an aerosol container.
Examples of such valve assemblies are disclosed in British Patent Specification N~s. ~64, 694, 1 336 379 and 2 077 229. Two of the most common problems associated with known metering valve assemblies are that the dosage reproduci-hility is often bad and variations of up to 40% may be obtained, particularly when the aerosol container is nearly empty, and it is often not possible to dispense the entire contents of the aerosol container causing significant wastage.
These problems are said to be o~ercome in the valve assemblies of ~ritish Patent Specification No.
Pressurized aerosol-dispensing containers, commonly referred to as "aerosol containers", are in widespread use for dispensing cosmetic, medical and other preparations. In some cases, particularly when dispensin~
medical preparations, it is important that the amount of the ureparation which is dispensed is a predetermined accurat~ volume each time the aero~sol container is activated, Additionally, many of the active ingredients in the preparations are expensive and accordingly it is important that there should be no wastage of the contents o~ the container.
There are several types of known valve assemblies for aerosol containers which are designed to dispense a metered quantity of the contents of an aerosol container.
Examples of such valve assemblies are disclosed in British Patent Specification N~s. ~64, 694, 1 336 379 and 2 077 229. Two of the most common problems associated with known metering valve assemblies are that the dosage reproduci-hility is often bad and variations of up to 40% may be obtained, particularly when the aerosol container is nearly empty, and it is often not possible to dispense the entire contents of the aerosol container causing significant wastage.
These problems are said to be o~ercome in the valve assemblies of ~ritish Patent Specification No.
2 077 229 which relates to a valve assembly comprising a casing member adapted to form at least the top portion of an aerosol container, the ~irst hollow hody secured to the inside of the casing member, and an elongate valve member J
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sealingly extending through respective apertures in the casing member and hollow body for longitudinal i`nward movement during a dispensing operation, outlet and inlet passages formed in the valve member at the outer and inner ends thereof respectively and operative to connect the chamber formed hy the space inside the hollow body around the valve member with the outside and inside respectively of the container, and a second hollow body encircling and retained on the first hollow body in such manner as to define a plurality of capilliary channels between the two bodies which retain liquid therein. However, such a valve assembly has no provision for.filling the aerosol container, There are two conventional methods Eor Eillin~
aerosol ~ontainers. The first method, commonly referred to as "cold filling", comprises cooling the formulation of aerosol propellant and active ingredients to maintain them in the liquid state, introducing the cooled liquid formulation into an aerosol container and thereafter closing the container by securing the valve assembly. In the second method, known as "pressure filling", the valve assembly is secured to the aerosol container beEore Eilling and the formulation, which is maintained in liquid form under presure, is introduced under pressure into the aerosol container through a special filliny valve which is included in the valve assembly. In some cases, a concen-trate of the active ingredient is introduced in -the open container, the valve assembly is attached and the aerosol unit is pressure filled with the remainder of the propellant.
There are several known valves which are adapted for both pressure filling and dispensing metered volumes of contents, However, these known valves generally suEEer from one or more of the disadvantages of poor dosa~e reproduci-bility, inefficient emptying of the container, a tendency for the filling valve to fail by displacement thereof during fillin~ and possession of a complex construction.
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The present invention has been made with these points in mind.
The invention provides a valve assembly which allows dispensing of metered volumes of material from an aerosol container comprising:
- a casing member adapted to form at least the -top portion of an aerosol container, - a first hollow body secured inside of the casing member defining a metering tank, - an elongate valve member sealingly extending through respective apertures in the casing member and metering tank capable of longitudinal movement between a closed and dispensing position, such that in the dispensing position there is an open channel through the elongate valve member connecting the metering tank with the outside environment and the metering tank is sealed to prevent passage of material from the aerosol container to the metering tank and in the closed position the elongate valve member allows passage of material from the aerosol container to the metering tank and prevents passage of material from the metering tank to the outside environment, - and a second hollow body retained upon and forming a shroud around the meiering tank, the shroud extending substantially to the casing member, the shroud and metering tank defining at least one passage through which material from the aerosol con-tainer may pass into the metering tank when the elongate valve member is in the closed position, the metering tank having a pressure filling valve comprising an aperture in the metering tank communicating with the aerosol container, which aperture is adjacent to the casing member and is covered by a rubber sleeve extending circumferentially around the ~5~
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metering tank, the sleeve preventing passage of material from the aerosol container to the metering tank but allowing passage of material from the metering tank to the aerosol container when there is sufficient pressure difference between the metering tank and the aerosol container, the shroud being shaped to prevent undue longitudinal movement of the rubber sleeve (on the pressure filling valve) and being also shaped to cover the sleeve to allow limited radial movement thereof to facilitate pressure filling but preventin~ permanen-t displacement of the sleeve from the aperture in the metering tank.
The valve assembly of the present invention allows pressure filling of aerosol containers with the complete formulation in a single step at speeds in excess of 15 g/sec. The valve gives excellent dosage reproducibility even when the container is almost empty and dispenses substantially all of the formulation within the container.
The invention will now be described with reference to the accompanying drawings wherein like reference numerals refer to like parts throughout the drawings, in which:
Figure 1 represents a cross-section through a valve assembly in accordance with the invention with the valve in the closed position, Figure 2 represen-ts a cross-section of the valve assembly of Figure 1 with the valve in the firing posi-tion for pressure filling, and Figure 3 represents a partial section through the plas-tic shroud present in the valve assembly shown in Figures 1 and ~. ~.5~
, .
- 4a -Thevalve assembly 1 comprises a casing 2 which forms -the closure cap of an aerosol container (not shown). The assembly 1 ~ay be crimped over t~e neck of an aerosol container with the provision of a sealing gasket (not shown) to ensure a tight seal.
A hollow body defines the metering tank 4 and is secured at one end 6 to the casing 2. The metering tank 4 is provided with an aperture 8 covered by a rubber sleeve 10 which extends around the metering tank 4. The aperture 8 and rubber sleeve 10 constitute the pressure filling means of the valve ~. `
An elongate valve member 12 extends centrally through the casing 2 and at its inner end 14 projects through an aperture 16 in the metering tank 4. Sealing gaskets 18 and 20 are provided at each end of the metering tank 4. A helical coil spring 22 is seated at one end upon the gasket 20 and at the other end on an annular protu-berance 24 oE the valve member 12 to urge the valve member12 towards the exterior of the aerosol container (not shown). The valve member 12 ïncludes at its outer end a discharge orifice 26 and a further orifice 28 which is exter.ior oE the casing 2 when the valve memher 12 is in the closed position (Figure 1) and within the metering tank 4 when the valve member 12 is in its firing position (Figure 2). The valve member 12 includes at its inner end on the outer surface thereof a groove 30 which is arranged to provide access to the metering tank 4 via aperture lfi only when the valve member 12 is in the closed position (Figure 1). This arrangement is known, see for example, British Patent Specification No. 2 077 229A.
The metering tank 4 is enveloped by -a shroud 32 made of plastics material. The open end 34 of the shroud 32 extends sub~tantially to the flared end 6 of the metering tank 4, enveloping the rubber sleeve 10 of the pressure filling valve 9. The interior of the shroud 32 at the open end 34 is dimensioned to allow only limited movement of the rubber sleeve 10 in the radial direction, sufficient to allow passage of liquid material from the metering tank 4 to the interior of the aerosol container during the filling operation, hut insufFicient to allow permanent displacement of the rubber sleeve 10. Movement of the rubber sleeve 10 in the longitudinal direction is prevented in one direction by the flared end 6 of the metering tank 4 and in the other direction by abutments 38 on the interior surface of the shroud 32.
The interior of the intermediate portion 40 of the shroud 32 comprises a series of substantially longitu-dinal ribs 41 defining passages 43 there beween. The ribs 41 are dimensioned such that the shroud 32 may be force fitted over the metering tank 4 with the ribs 91 providing pressure contact with the outside of the metering tank 4 thereby holding the shroud 32 firmly in place. Preferably, the interior surface is provided with a projecting surface 42 which is designed to abut the end of the metering tank 4. This arrangement blocks the passages 43 between the ribs 41 with the exception of one or more passages which are extended at their inner end 44 to deEine with the metering tank 4 an aperture 45 50 that there are one or more open passages between the interior inner portion 46 oE the shroud 32, the intermediate portion 40 and the open end 34 leading to the aerosol container. The inner end 42 of the shroud 32 is dimensioned to accommodate the valve member 12 in both the closed and firing positions. The exterior sur-face 47 of the shroud 32 is free Erom major discontinuities, e.g. ledges, to reduce the propensity of the formulations within the aerosol container to deposit powder or crystals thereon.
The valve assembly 1 of the invention readily allows the entire contents of the aerosol container to be pressure filled. The valve member 12 is depressed to the firing position and the formulation introduced under pressure through the aperture 26. The liquid emerges froln the elongate valve member 12 into the metering tank 4 via the orifice 28. When sufficient pressure has built up in the metering tank 4, there is a slight radial displacement of the rubber sleeve 10 covering the aperture 8 of the pressure filling valve 9 -thus allo~ing passage oE liquid from the metering tank 4 into the aerosol con~ainer. The route of the formulation under pressure filling is shown by the arrowe(3 line in Figure 2.
In uset the aerosol is fired with the valve assembly 1 inverted, i.e. valve member 12 pointing - - -downwardly. The liquid formulation therein passes up the open passage 44 between the shroud 32 and metering tank 4 to the inner end 46. When the valve member 12 is in the closed position (Figure 1), the liquid con-tents pass rom the inner end 46 of the shroud 32 into the metering tank 4 via the groove 30 in the valve member 12 to fill the metering tank 4. When the valve member 12 is in the firing position (Figure 2) access from the shroud 32 to the metering tank 4 is prevented since aperture 16 is blocked by the exterior surEace oE the valve member 12 and the liquid contents under pressure in the meterin~ tank 4 pass into the elongate valve membèr 12 via oriice 2~ and thence ar~ expelled via the aperture 26.
The valve assembly 1 gives very good dose repro-ducibility even when the container is almost empty. This isachieved by the shroud 32 extending substantially to the flared end 6 of the metering tank 4 and thus will dip into the liquid contents of the aerosol container (when the container is inverted) until the contents are substantially exhausted. The provision of only one open channel which is preferred, reduces the "dead volume" of the valve assembly since the blocked passages contain only small volumes o liquid and ensures that the filling of the metering tank 4 is substantially unaE~ected when the aerosol container is almost empty and tilted.
The arranyement also ensures that the rubber sleeve 10 of the pressure filling valve 9 will not be permanently displaced even under high pressure Eilling operations. This allows the size oE the sleeve to be reduced in comparison to many prior art devices thus reducing the risk oE contamination of the contents upon contact with rubber.
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sealingly extending through respective apertures in the casing member and hollow body for longitudinal i`nward movement during a dispensing operation, outlet and inlet passages formed in the valve member at the outer and inner ends thereof respectively and operative to connect the chamber formed hy the space inside the hollow body around the valve member with the outside and inside respectively of the container, and a second hollow body encircling and retained on the first hollow body in such manner as to define a plurality of capilliary channels between the two bodies which retain liquid therein. However, such a valve assembly has no provision for.filling the aerosol container, There are two conventional methods Eor Eillin~
aerosol ~ontainers. The first method, commonly referred to as "cold filling", comprises cooling the formulation of aerosol propellant and active ingredients to maintain them in the liquid state, introducing the cooled liquid formulation into an aerosol container and thereafter closing the container by securing the valve assembly. In the second method, known as "pressure filling", the valve assembly is secured to the aerosol container beEore Eilling and the formulation, which is maintained in liquid form under presure, is introduced under pressure into the aerosol container through a special filliny valve which is included in the valve assembly. In some cases, a concen-trate of the active ingredient is introduced in -the open container, the valve assembly is attached and the aerosol unit is pressure filled with the remainder of the propellant.
There are several known valves which are adapted for both pressure filling and dispensing metered volumes of contents, However, these known valves generally suEEer from one or more of the disadvantages of poor dosa~e reproduci-bility, inefficient emptying of the container, a tendency for the filling valve to fail by displacement thereof during fillin~ and possession of a complex construction.
~:~A's~
The present invention has been made with these points in mind.
The invention provides a valve assembly which allows dispensing of metered volumes of material from an aerosol container comprising:
- a casing member adapted to form at least the -top portion of an aerosol container, - a first hollow body secured inside of the casing member defining a metering tank, - an elongate valve member sealingly extending through respective apertures in the casing member and metering tank capable of longitudinal movement between a closed and dispensing position, such that in the dispensing position there is an open channel through the elongate valve member connecting the metering tank with the outside environment and the metering tank is sealed to prevent passage of material from the aerosol container to the metering tank and in the closed position the elongate valve member allows passage of material from the aerosol container to the metering tank and prevents passage of material from the metering tank to the outside environment, - and a second hollow body retained upon and forming a shroud around the meiering tank, the shroud extending substantially to the casing member, the shroud and metering tank defining at least one passage through which material from the aerosol con-tainer may pass into the metering tank when the elongate valve member is in the closed position, the metering tank having a pressure filling valve comprising an aperture in the metering tank communicating with the aerosol container, which aperture is adjacent to the casing member and is covered by a rubber sleeve extending circumferentially around the ~5~
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metering tank, the sleeve preventing passage of material from the aerosol container to the metering tank but allowing passage of material from the metering tank to the aerosol container when there is sufficient pressure difference between the metering tank and the aerosol container, the shroud being shaped to prevent undue longitudinal movement of the rubber sleeve (on the pressure filling valve) and being also shaped to cover the sleeve to allow limited radial movement thereof to facilitate pressure filling but preventin~ permanen-t displacement of the sleeve from the aperture in the metering tank.
The valve assembly of the present invention allows pressure filling of aerosol containers with the complete formulation in a single step at speeds in excess of 15 g/sec. The valve gives excellent dosage reproducibility even when the container is almost empty and dispenses substantially all of the formulation within the container.
The invention will now be described with reference to the accompanying drawings wherein like reference numerals refer to like parts throughout the drawings, in which:
Figure 1 represents a cross-section through a valve assembly in accordance with the invention with the valve in the closed position, Figure 2 represen-ts a cross-section of the valve assembly of Figure 1 with the valve in the firing posi-tion for pressure filling, and Figure 3 represents a partial section through the plas-tic shroud present in the valve assembly shown in Figures 1 and ~. ~.5~
, .
- 4a -Thevalve assembly 1 comprises a casing 2 which forms -the closure cap of an aerosol container (not shown). The assembly 1 ~ay be crimped over t~e neck of an aerosol container with the provision of a sealing gasket (not shown) to ensure a tight seal.
A hollow body defines the metering tank 4 and is secured at one end 6 to the casing 2. The metering tank 4 is provided with an aperture 8 covered by a rubber sleeve 10 which extends around the metering tank 4. The aperture 8 and rubber sleeve 10 constitute the pressure filling means of the valve ~. `
An elongate valve member 12 extends centrally through the casing 2 and at its inner end 14 projects through an aperture 16 in the metering tank 4. Sealing gaskets 18 and 20 are provided at each end of the metering tank 4. A helical coil spring 22 is seated at one end upon the gasket 20 and at the other end on an annular protu-berance 24 oE the valve member 12 to urge the valve member12 towards the exterior of the aerosol container (not shown). The valve member 12 ïncludes at its outer end a discharge orifice 26 and a further orifice 28 which is exter.ior oE the casing 2 when the valve memher 12 is in the closed position (Figure 1) and within the metering tank 4 when the valve member 12 is in its firing position (Figure 2). The valve member 12 includes at its inner end on the outer surface thereof a groove 30 which is arranged to provide access to the metering tank 4 via aperture lfi only when the valve member 12 is in the closed position (Figure 1). This arrangement is known, see for example, British Patent Specification No. 2 077 229A.
The metering tank 4 is enveloped by -a shroud 32 made of plastics material. The open end 34 of the shroud 32 extends sub~tantially to the flared end 6 of the metering tank 4, enveloping the rubber sleeve 10 of the pressure filling valve 9. The interior of the shroud 32 at the open end 34 is dimensioned to allow only limited movement of the rubber sleeve 10 in the radial direction, sufficient to allow passage of liquid material from the metering tank 4 to the interior of the aerosol container during the filling operation, hut insufFicient to allow permanent displacement of the rubber sleeve 10. Movement of the rubber sleeve 10 in the longitudinal direction is prevented in one direction by the flared end 6 of the metering tank 4 and in the other direction by abutments 38 on the interior surface of the shroud 32.
The interior of the intermediate portion 40 of the shroud 32 comprises a series of substantially longitu-dinal ribs 41 defining passages 43 there beween. The ribs 41 are dimensioned such that the shroud 32 may be force fitted over the metering tank 4 with the ribs 91 providing pressure contact with the outside of the metering tank 4 thereby holding the shroud 32 firmly in place. Preferably, the interior surface is provided with a projecting surface 42 which is designed to abut the end of the metering tank 4. This arrangement blocks the passages 43 between the ribs 41 with the exception of one or more passages which are extended at their inner end 44 to deEine with the metering tank 4 an aperture 45 50 that there are one or more open passages between the interior inner portion 46 oE the shroud 32, the intermediate portion 40 and the open end 34 leading to the aerosol container. The inner end 42 of the shroud 32 is dimensioned to accommodate the valve member 12 in both the closed and firing positions. The exterior sur-face 47 of the shroud 32 is free Erom major discontinuities, e.g. ledges, to reduce the propensity of the formulations within the aerosol container to deposit powder or crystals thereon.
The valve assembly 1 of the invention readily allows the entire contents of the aerosol container to be pressure filled. The valve member 12 is depressed to the firing position and the formulation introduced under pressure through the aperture 26. The liquid emerges froln the elongate valve member 12 into the metering tank 4 via the orifice 28. When sufficient pressure has built up in the metering tank 4, there is a slight radial displacement of the rubber sleeve 10 covering the aperture 8 of the pressure filling valve 9 -thus allo~ing passage oE liquid from the metering tank 4 into the aerosol con~ainer. The route of the formulation under pressure filling is shown by the arrowe(3 line in Figure 2.
In uset the aerosol is fired with the valve assembly 1 inverted, i.e. valve member 12 pointing - - -downwardly. The liquid formulation therein passes up the open passage 44 between the shroud 32 and metering tank 4 to the inner end 46. When the valve member 12 is in the closed position (Figure 1), the liquid con-tents pass rom the inner end 46 of the shroud 32 into the metering tank 4 via the groove 30 in the valve member 12 to fill the metering tank 4. When the valve member 12 is in the firing position (Figure 2) access from the shroud 32 to the metering tank 4 is prevented since aperture 16 is blocked by the exterior surEace oE the valve member 12 and the liquid contents under pressure in the meterin~ tank 4 pass into the elongate valve membèr 12 via oriice 2~ and thence ar~ expelled via the aperture 26.
The valve assembly 1 gives very good dose repro-ducibility even when the container is almost empty. This isachieved by the shroud 32 extending substantially to the flared end 6 of the metering tank 4 and thus will dip into the liquid contents of the aerosol container (when the container is inverted) until the contents are substantially exhausted. The provision of only one open channel which is preferred, reduces the "dead volume" of the valve assembly since the blocked passages contain only small volumes o liquid and ensures that the filling of the metering tank 4 is substantially unaE~ected when the aerosol container is almost empty and tilted.
The arranyement also ensures that the rubber sleeve 10 of the pressure filling valve 9 will not be permanently displaced even under high pressure Eilling operations. This allows the size oE the sleeve to be reduced in comparison to many prior art devices thus reducing the risk oE contamination of the contents upon contact with rubber.
Claims (8)
1. A valve assembly which allows dispensing of metered volumes of material from an aerosol container comprising:
- a casing member adapted to form at least a top portion of an aerosol container, - a first hollow body secured inside the casing member defining a metering tank, - an elongate valve member sealingly extending through respective apertures in the casing member and metering tank capable of longitudinal movement between a closed and dispensing position, such that in the dispensing position there is an open channel through the elongate valve member connecting the metering tank with the outside environment and the metering tank is sealed to prevent passage of material from the aerosol container to the metering tank and in the closed position the elongate valve member allows passage of material from the aerosol container to the metering tank and prevents passage of material from the metering tank to the outside environment, - and a second hollow body retained upon and forming a shroud around the metering tank, the shroud extending substantially to the casing member, the shroud and metering tank defining at least one passage through which material from the aerosol container may pass into the metering tank when the elongate valve member is in the closed position, the metering tank having a pressure filling valve comprising an aperture in the metering tank communicating with the aerosol container which aperture is adjacent to the casing member and is covered by a rubber sleeve extending circumferentially around the metering tank, the sleeve preventing passage of material from the aerosol container to the metering tank but allowing passage of material from the metering tank to the aerosol container when there is sufficient pressure diference between the metering tank and the aerosol container, the shroud being shaped to prevent undue longitudinal movement of the rubber sleeve, on said pressure filling valve, and shaped to cover said sleeve to allow limited radial movement thereof to facilitate pressure filling but preventing permanent displacement thereof from the aperture in the metering tank.
- a casing member adapted to form at least a top portion of an aerosol container, - a first hollow body secured inside the casing member defining a metering tank, - an elongate valve member sealingly extending through respective apertures in the casing member and metering tank capable of longitudinal movement between a closed and dispensing position, such that in the dispensing position there is an open channel through the elongate valve member connecting the metering tank with the outside environment and the metering tank is sealed to prevent passage of material from the aerosol container to the metering tank and in the closed position the elongate valve member allows passage of material from the aerosol container to the metering tank and prevents passage of material from the metering tank to the outside environment, - and a second hollow body retained upon and forming a shroud around the metering tank, the shroud extending substantially to the casing member, the shroud and metering tank defining at least one passage through which material from the aerosol container may pass into the metering tank when the elongate valve member is in the closed position, the metering tank having a pressure filling valve comprising an aperture in the metering tank communicating with the aerosol container which aperture is adjacent to the casing member and is covered by a rubber sleeve extending circumferentially around the metering tank, the sleeve preventing passage of material from the aerosol container to the metering tank but allowing passage of material from the metering tank to the aerosol container when there is sufficient pressure diference between the metering tank and the aerosol container, the shroud being shaped to prevent undue longitudinal movement of the rubber sleeve, on said pressure filling valve, and shaped to cover said sleeve to allow limited radial movement thereof to facilitate pressure filling but preventing permanent displacement thereof from the aperture in the metering tank.
2. An assembly according to claim 1, where in there is a single passage defined between the shroud and metering tank through which material from the aerosol container may pass into the metering tank.
3. An assembly according to claim 2, wherein the interior portions of the shroud are in pressure contact with the exterior surface of the metering tank thereby holding the shroud securely in place.
4. An assembly according to claim 3, wherein the interior of the shroud comprises a plurality of ribs which are in pressure contact with the metering tank, the ribs defining channels therebetween.
5. An assembly according to claim 4, wherein said ribs are vertical and are circumferentially disposed and have upper ends forming abutments for prevention of said undue longitudinal movement in a downward direction and wherein said metering tank has a lower end and a flared upper end and wherein said undue longitudinal movement in an upward direction is prevented by said flared end.
6. An assembly according to claim 4 or 5, wherein the interior surface of the shroud includes a ledge which abuts the lower end of the metering tank thereby blocking the channels between the ribs with the exception of one or more channels which are open.
7. An aerosol container having a valve assembly according to claim 1, 4 or 5.
8. An aerosol container having a valve assembly according to claim 5, wherein the interior surface of the shroud includes a ledge which abuts the lower end of the metering tank thereby blocking the channels between the ribs with the exception of one or more channels which are open.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB838312479A GB8312479D0 (en) | 1983-05-06 | 1983-05-06 | Valve assembly |
| GB83.12479 | 1983-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1252439A true CA1252439A (en) | 1989-04-11 |
Family
ID=10542274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000452804A Expired CA1252439A (en) | 1983-05-06 | 1984-04-26 | Valve assembly for a pressurized aerosol dispensing container |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0125865B1 (en) |
| JP (1) | JPS6034363A (en) |
| AU (1) | AU560773B2 (en) |
| CA (1) | CA1252439A (en) |
| DE (1) | DE3472388D1 (en) |
| GB (1) | GB8312479D0 (en) |
| NZ (1) | NZ207997A (en) |
| ZA (1) | ZA843380B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2602298B1 (en) * | 1986-07-30 | 1988-09-16 | Sofab | DOSER VALVE |
| DE3802498A1 (en) * | 1988-01-28 | 1989-08-03 | Boehringer Ingelheim Kg | DEVICE FOR INCREASING THE DOSAGE SAFETY OF AEROSOL PREPARATIONS ON A SUSPENSION BASE |
| US4867352A (en) * | 1988-04-05 | 1989-09-19 | Philip Meshberg | Dispensing valve assembly for use with a pressurized container |
| US5105995A (en) * | 1990-04-30 | 1992-04-21 | Martin James H | Gas assist unit dose dispenser |
| GB9312196D0 (en) * | 1993-06-14 | 1993-07-28 | Minnesota Mining & Mfg | Metered-dose aerosol valves |
| GB9626960D0 (en) | 1996-12-27 | 1997-02-12 | Glaxo Group Ltd | Valve for aerosol container |
| GB2357493B (en) * | 1999-12-22 | 2002-01-09 | Bespak Plc | Improvements in valves for pressurised dispensing containers |
| US8678248B2 (en) | 2007-12-11 | 2014-03-25 | Summit Packaging Systems Inc | Metering valve |
| EP3078606B1 (en) * | 2013-12-03 | 2020-11-18 | Mitani Valve Co., Ltd. | Aerosol housing mechanism and aerosol product provided with said aerosol housing mechanism |
| JP6172756B2 (en) * | 2014-04-30 | 2017-08-02 | 株式会社三谷バルブ | Inner and outer double container aerosol injection mechanism and aerosol type product equipped with this inner and outer double container aerosol injection mechanism |
| JP7120779B2 (en) * | 2018-03-20 | 2022-08-17 | 株式会社ダイゾー | Spray-on products and methods of manufacturing spray-on products |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS3818747Y1 (en) * | 1960-05-20 | 1963-09-05 | ||
| GB979002A (en) * | 1962-02-26 | 1965-01-01 | Bertspa Engineering Company Lt | Valves for pressurised containers |
| GB2077229B (en) * | 1980-05-16 | 1983-08-03 | Neotechnic Eng Ltd | Valve assembly for a pressurized aerosoldispensing container |
-
1983
- 1983-05-06 GB GB838312479A patent/GB8312479D0/en active Pending
-
1984
- 1984-04-26 CA CA000452804A patent/CA1252439A/en not_active Expired
- 1984-04-30 NZ NZ207997A patent/NZ207997A/en unknown
- 1984-05-04 ZA ZA843380A patent/ZA843380B/en unknown
- 1984-05-04 JP JP59088581A patent/JPS6034363A/en active Pending
- 1984-05-04 AU AU27681/84A patent/AU560773B2/en not_active Ceased
- 1984-05-08 EP EP84303081A patent/EP0125865B1/en not_active Expired
- 1984-05-08 DE DE8484303081T patent/DE3472388D1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6034363A (en) | 1985-02-21 |
| DE3472388D1 (en) | 1988-08-04 |
| AU2768184A (en) | 1984-11-08 |
| ZA843380B (en) | 1986-03-26 |
| AU560773B2 (en) | 1987-04-16 |
| NZ207997A (en) | 1986-05-09 |
| EP0125865A3 (en) | 1985-11-06 |
| EP0125865B1 (en) | 1988-06-29 |
| GB8312479D0 (en) | 1983-06-08 |
| EP0125865A2 (en) | 1984-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |