CA1126702A - Pressure fillable dispensing device - Google Patents
Pressure fillable dispensing deviceInfo
- Publication number
- CA1126702A CA1126702A CA374,906A CA374906A CA1126702A CA 1126702 A CA1126702 A CA 1126702A CA 374906 A CA374906 A CA 374906A CA 1126702 A CA1126702 A CA 1126702A
- Authority
- CA
- Canada
- Prior art keywords
- discharge tube
- chamber
- cup
- container
- rim
- 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
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)
Abstract
Abstract A dispensing device for a pressurized liquid container capable of delivering metered quantities of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure including a generally cylindrical chamber including an upper chamber and a generally cylindrical lower chamber, a discharge tube mounted in the sealed upper end of the chamber and extending into the chamber, the discharge tube being axially movable in the chamber and having a cup-shaped piston member connected thereto, the cup-shaped piston having a resilient rim slidable within the lower chamber when the discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within the upper chamber, the rim of the cup-shaped piston member being sufficiently resilient to allow fluids introduced under pressure through the discharge tube during filling of the container to flow between the rim and the side walls of the lower chamber. The discharge tube has a skirt at the lower end which strikes the seal to limit upward movement of the tube.
The skirt has a pin which extends downwardly from the discharge tube and is slidably received in a hollow upper section of the piston.
The skirt has a pin which extends downwardly from the discharge tube and is slidably received in a hollow upper section of the piston.
Description
This is a division of Canadian Patent Application Serial No.
345,565 filed February 13, 1980.
The present invention is related to dispensing devices for aerosols and in particular to a mete~ing valve for delivering metered quantities of an aerosol composition.
Aerosol compositions generally are of two kinds, namely those in which the composition contains a propellant liquid, which vaporizes very rapidly when the composition is at atmospheric pressure, and those in which the propulsion of the aerosol com-position is effected by maintaining the liquid composition in a container under the pressure of a permanent gas, such as nitrogen.
The term "aerosol composition" as employed herein includes compositions other than simple liquids such as pastes, which may be discharged in the form of a coherent ribbon or stream, and viscous liquids which may be discharged in the form of a jet or a series of large drops and is not limited to compositions which are discharged in the form of the very minute droplets normally referred to as aerosols in the art to which the present invention relates.
Usually, the discharge tu~e will be provided with an actuator in the form of a nozzle member so constructed as to discharge the aerosol composition in the form of a ~et, spray, or ribbon and to pFovide a conveniently shaped end part to which manual pressure can be applied to operate the valve.
~arious prior constructions have been proposed for dispensing of metered quantities of aerosol compositions.
Typical of such structures are those contained in U.S. Patents No. 3,Q58,629; 2,856,103; and 2,788,925 which illustrate various valves of the prior art.
dm~
~2~i76~Z
In accordance with the invention of the parent applica-tion there is provided a dispensing device for a pxessurized liquid container capable of delivering metered quantities of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure including a generally cylindrical chamber including an upper chamber and a generally cylindrical lower chamber, a discharge tube mounted in the sealed upper end of the chamber and extending into the chamber, the discharge tube being axially movable in the chamber and having 1~ a cup-shaped piston member connected thereto, the cup-shaped piston having a laterally resilient rim slidable within the lower chamber when the discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within the upper chamber, the rim of the cup-shaped piston member heing sufficiently resilient to allow fluids introduced under pressure through said discharge tube during filling of the container to flow between the rim and the side walls of the lower chamber, the lower chamber having a plurality of ribs connected to the side wall of the lower chamber for mechanically deflecting the rim inwardly. On the other hand the present invention provides a dispensing device for a pressurized liquid container capable of delivering metered quanti-ties of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure comprising: a. a generally cylindrical chamber including an upper chamber and a lower chamber, the generally cylindrical chamber being adapted to be sealed into a neck of the container, the upper chamber being closed at the upper end with respect to the container by seal means; b. discharge tube means mounted in the seal means and extending therethrough into the generally dm~ 2 -,., . ,,, ~
: :. , ~, : , : .: .-, ,~, . . .
l~Zt;~2 cylindrical chamber, the discharge tube being resiliently biased toward the upper end of the upper chamber and being movable axially in the generally cylindrical chamber; and c. a cup-shaped piston member connected to the discharge tube with its open end towards the lower end of the lower chamber, the cup-shaped piston member having a laterally resilient rim with the entire periphery thereof sliding directly against the side wall of the lower chamber when the discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within the upper chamber, the rim of the cup-shaped piston member being sufficiently resilient to allow fluids introduced under pressure through the discharge tube during filling of the container to flow between the rim and the side wall of the lower chamber, the discharge tube having a skirt at the lower end thereof which strikes the seal means to limit the upward movement of the discharge tube, the skirt have a pin rigidly connected thereto which extends downwardly from the discharge tube means and is : slidably received in a hollow upper section of the cup-shapted piston.
FIGURE 1 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present invention in the non-dispensing mode;
FIGURE 2 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present invention while the device is being filled; and FIGURE 3 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present inventio~
while the device is being filled.
Referring now to the drawings, in Figure 1 is shown the dm:, J. ~ - 3 -: . . -: . , ~
1~267~Z
dispensing device of the invention generally indicated by the numeral 10. The device includes a cylindrical member 11 which has a cylindrical upper chamber 12 therein and a generally cylindrical lower chamber 13 of smaller diameter than chamber 12, chamber 13 having side wall 14. Both upper chamber 12 and lower chamber 13 are generally cylindrical in shape and axially aligned.
Projecting from the side wall 1~ of lower chamber 13 are a series of nibs 15 which extend axially down side dm: - 3a -..
,., ~,, :, ' ,; ' .:
~267~2 wall 14. Immediately below lower chamber 13 is a tubular opening 16 ~hich is axially aligned with dip tube 17. Dip ~ube 17 extends do~wardly into the bottom of the contain-er indicated generally by the numeral 13.
Located inside circuLar mem~er ll is discharge tube l9 which has hollow channel 20 inside and opening 21 in the side wall thereof. Shown "ghosted" to the top of discharge tube l9 is button 29 which is a conventional aervsol spray button. Discharge tube l9 extends through hole 44a in washer 44 and hole 18a in the top of container 18 has a skirt portion 22 at the lower end thereof, down-wardly from which extends a pin 23. Skirt 22 strikes elastic washer 44 to limit the upper moyement o discharge tube 19. Elastic washer 4~ seals the upper end of upper chamber 12, Slidably connected to pin 23 is cup-shaped piston 24 having a laterally resilient rim 25. Pin 23 is slid-ably received in the hollow upper portion 26 c)f cup-shaped piston ~4. Extending do~nwardly from cup-shaped piston 24 is pin 27 around which is loosely-fitted spring 28.
Cylindrical chamber ll is shown force-fitted in the upper neck portion 3~ of container 18 and held in place by tab 30. Elastic washer 44 is itted at the upper~
end of cylindrical member ll in the neek 32 at the top end of upper chamber 12.
To fill the dispensing device of the invention~ a filling tube 33 shown in Figure 2 containing liquids or fluids under pressure, is forced onto discharge tube 19 aft~r button 29 has been removed therefrom. A flat portion 34 inside of tube 33 contacts discharge tub~ 19 forcing it downward to the position shown in Figure 2. Tube l9 can also be forcea do~n by hydraulic pressure of the fluias being forcecl in~o container 18. ~ seal or ~asket 35 is provided around the lower end of illing tube 33 to m~lie a sealing cont:act with the container l~.
- ;, .: . : . : . .
. .
~L2676)2 The flow of fluids uncler pressure is indicated by the arrows in Figure 2. The fluids flow doi~nwardly through discharge tube 19 and outwardly through opening 21 into upper chamber 12. By properly dimensioning the fit between washer 44 and the discharge tueb 19, fluids could also flow between tube and washer during pressure filling. Due to the pressure of the fluids entering container 18, rim 25 is deformed as shown in Figure 2 and fluids flow therearound into opening 16 and downward through dip tube 17 to fill the container. As shown in Figure 3, if a sufficiently loose fit is provided between pin 23 and the upper portion 26 of piston 24 and the pressure of the liquids flowing from filling tube 33 is sufficiently great, the cup-shaped piston 24 slides downwardly from pin 23 causing the rim 25 of cup-shaped piston 24 to strike nibs 15 and cause mechan-ical deformation of the rim to allow fluids to flow there-around.
To operate the device of the present invention, - the button 29 is depressed thereby lowering opening 21 beneath elastic washer 44 and causing rim 25 to contact :
the side wall 14 of lower chamber 13. When the rim 25 con-tacts the side wll 14, the fluids in chamber 12 are iso-lated from the fluids beneath cup-shaped piston 24 thus isolating a metered charge o fluids in chamber 12. When vent 21 then is lowered below washer 44 the fluids within upper chamber 12 exit through opening 21 into chamber 20 and upwardly to buttom 29. It will be noted that, as would be obvious to those of ordinary skill in the art, rim 25 establishes a sealing contact with side ~all 14 of reduced diameter section 13 prior to opening 21 passing beneath washer 44.
Upon release of the button 29, opening 21 first rises to reseal in elastic washer 44 and causes rim 25 to lose contact with side wall 14 allowing fluids to refill - 35 Fhamber 12 :in preparation for the next cycle.
, : ~ . ' ' ' '' ' .:'.', . ' ~ -` :. .' .': ,. . ' :' .:
345,565 filed February 13, 1980.
The present invention is related to dispensing devices for aerosols and in particular to a mete~ing valve for delivering metered quantities of an aerosol composition.
Aerosol compositions generally are of two kinds, namely those in which the composition contains a propellant liquid, which vaporizes very rapidly when the composition is at atmospheric pressure, and those in which the propulsion of the aerosol com-position is effected by maintaining the liquid composition in a container under the pressure of a permanent gas, such as nitrogen.
The term "aerosol composition" as employed herein includes compositions other than simple liquids such as pastes, which may be discharged in the form of a coherent ribbon or stream, and viscous liquids which may be discharged in the form of a jet or a series of large drops and is not limited to compositions which are discharged in the form of the very minute droplets normally referred to as aerosols in the art to which the present invention relates.
Usually, the discharge tu~e will be provided with an actuator in the form of a nozzle member so constructed as to discharge the aerosol composition in the form of a ~et, spray, or ribbon and to pFovide a conveniently shaped end part to which manual pressure can be applied to operate the valve.
~arious prior constructions have been proposed for dispensing of metered quantities of aerosol compositions.
Typical of such structures are those contained in U.S. Patents No. 3,Q58,629; 2,856,103; and 2,788,925 which illustrate various valves of the prior art.
dm~
~2~i76~Z
In accordance with the invention of the parent applica-tion there is provided a dispensing device for a pxessurized liquid container capable of delivering metered quantities of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure including a generally cylindrical chamber including an upper chamber and a generally cylindrical lower chamber, a discharge tube mounted in the sealed upper end of the chamber and extending into the chamber, the discharge tube being axially movable in the chamber and having 1~ a cup-shaped piston member connected thereto, the cup-shaped piston having a laterally resilient rim slidable within the lower chamber when the discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within the upper chamber, the rim of the cup-shaped piston member heing sufficiently resilient to allow fluids introduced under pressure through said discharge tube during filling of the container to flow between the rim and the side walls of the lower chamber, the lower chamber having a plurality of ribs connected to the side wall of the lower chamber for mechanically deflecting the rim inwardly. On the other hand the present invention provides a dispensing device for a pressurized liquid container capable of delivering metered quanti-ties of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure comprising: a. a generally cylindrical chamber including an upper chamber and a lower chamber, the generally cylindrical chamber being adapted to be sealed into a neck of the container, the upper chamber being closed at the upper end with respect to the container by seal means; b. discharge tube means mounted in the seal means and extending therethrough into the generally dm~ 2 -,., . ,,, ~
: :. , ~, : , : .: .-, ,~, . . .
l~Zt;~2 cylindrical chamber, the discharge tube being resiliently biased toward the upper end of the upper chamber and being movable axially in the generally cylindrical chamber; and c. a cup-shaped piston member connected to the discharge tube with its open end towards the lower end of the lower chamber, the cup-shaped piston member having a laterally resilient rim with the entire periphery thereof sliding directly against the side wall of the lower chamber when the discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within the upper chamber, the rim of the cup-shaped piston member being sufficiently resilient to allow fluids introduced under pressure through the discharge tube during filling of the container to flow between the rim and the side wall of the lower chamber, the discharge tube having a skirt at the lower end thereof which strikes the seal means to limit the upward movement of the discharge tube, the skirt have a pin rigidly connected thereto which extends downwardly from the discharge tube means and is : slidably received in a hollow upper section of the cup-shapted piston.
FIGURE 1 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present invention in the non-dispensing mode;
FIGURE 2 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present invention while the device is being filled; and FIGURE 3 is a partly cut-away, cross-sectional, elevational view of the dispensing device of the present inventio~
while the device is being filled.
Referring now to the drawings, in Figure 1 is shown the dm:, J. ~ - 3 -: . . -: . , ~
1~267~Z
dispensing device of the invention generally indicated by the numeral 10. The device includes a cylindrical member 11 which has a cylindrical upper chamber 12 therein and a generally cylindrical lower chamber 13 of smaller diameter than chamber 12, chamber 13 having side wall 14. Both upper chamber 12 and lower chamber 13 are generally cylindrical in shape and axially aligned.
Projecting from the side wall 1~ of lower chamber 13 are a series of nibs 15 which extend axially down side dm: - 3a -..
,., ~,, :, ' ,; ' .:
~267~2 wall 14. Immediately below lower chamber 13 is a tubular opening 16 ~hich is axially aligned with dip tube 17. Dip ~ube 17 extends do~wardly into the bottom of the contain-er indicated generally by the numeral 13.
Located inside circuLar mem~er ll is discharge tube l9 which has hollow channel 20 inside and opening 21 in the side wall thereof. Shown "ghosted" to the top of discharge tube l9 is button 29 which is a conventional aervsol spray button. Discharge tube l9 extends through hole 44a in washer 44 and hole 18a in the top of container 18 has a skirt portion 22 at the lower end thereof, down-wardly from which extends a pin 23. Skirt 22 strikes elastic washer 44 to limit the upper moyement o discharge tube 19. Elastic washer 4~ seals the upper end of upper chamber 12, Slidably connected to pin 23 is cup-shaped piston 24 having a laterally resilient rim 25. Pin 23 is slid-ably received in the hollow upper portion 26 c)f cup-shaped piston ~4. Extending do~nwardly from cup-shaped piston 24 is pin 27 around which is loosely-fitted spring 28.
Cylindrical chamber ll is shown force-fitted in the upper neck portion 3~ of container 18 and held in place by tab 30. Elastic washer 44 is itted at the upper~
end of cylindrical member ll in the neek 32 at the top end of upper chamber 12.
To fill the dispensing device of the invention~ a filling tube 33 shown in Figure 2 containing liquids or fluids under pressure, is forced onto discharge tube 19 aft~r button 29 has been removed therefrom. A flat portion 34 inside of tube 33 contacts discharge tub~ 19 forcing it downward to the position shown in Figure 2. Tube l9 can also be forcea do~n by hydraulic pressure of the fluias being forcecl in~o container 18. ~ seal or ~asket 35 is provided around the lower end of illing tube 33 to m~lie a sealing cont:act with the container l~.
- ;, .: . : . : . .
. .
~L2676)2 The flow of fluids uncler pressure is indicated by the arrows in Figure 2. The fluids flow doi~nwardly through discharge tube 19 and outwardly through opening 21 into upper chamber 12. By properly dimensioning the fit between washer 44 and the discharge tueb 19, fluids could also flow between tube and washer during pressure filling. Due to the pressure of the fluids entering container 18, rim 25 is deformed as shown in Figure 2 and fluids flow therearound into opening 16 and downward through dip tube 17 to fill the container. As shown in Figure 3, if a sufficiently loose fit is provided between pin 23 and the upper portion 26 of piston 24 and the pressure of the liquids flowing from filling tube 33 is sufficiently great, the cup-shaped piston 24 slides downwardly from pin 23 causing the rim 25 of cup-shaped piston 24 to strike nibs 15 and cause mechan-ical deformation of the rim to allow fluids to flow there-around.
To operate the device of the present invention, - the button 29 is depressed thereby lowering opening 21 beneath elastic washer 44 and causing rim 25 to contact :
the side wall 14 of lower chamber 13. When the rim 25 con-tacts the side wll 14, the fluids in chamber 12 are iso-lated from the fluids beneath cup-shaped piston 24 thus isolating a metered charge o fluids in chamber 12. When vent 21 then is lowered below washer 44 the fluids within upper chamber 12 exit through opening 21 into chamber 20 and upwardly to buttom 29. It will be noted that, as would be obvious to those of ordinary skill in the art, rim 25 establishes a sealing contact with side ~all 14 of reduced diameter section 13 prior to opening 21 passing beneath washer 44.
Upon release of the button 29, opening 21 first rises to reseal in elastic washer 44 and causes rim 25 to lose contact with side wall 14 allowing fluids to refill - 35 Fhamber 12 :in preparation for the next cycle.
, : ~ . ' ' ' '' ' .:'.', . ' ~ -` :. .' .': ,. . ' :' .:
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A dispensing device for a pressurized liquid container capable of delivering metered quantities of an aerosol composition having a discharge tube through which the container can be filled with fluids under pressure comprising:
a. a generally cylindrical chamber including an upper chamber and a lower chamber, said generally cylindrical chamber being adapted to be sealed into a neck of said container, said upper chamber being closed at the upper end with respect to said container by seal means;
b. discharge tube means mounted in said seal means and extending therethrough into said generally cylindrical chamber, said discharge tube being resiliently biased toward the upper end of said upper chamber and being movable axially in said generally cylindrical chamber; and c. a cup-shaped piston member connected to said discharge tube with its open end towards the lower end of said lower chamber, said cup-shaped piston member having a laterally resilient rim with the entire periphery thereof sliding directly against the side wall of said lower chamber when said discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within said upper chamber, said rim of said cup-shaped piston member being sufficiently resilient to allow fluids introduced under pressure through said discharge tube during filling of said container to flow between said rim and said side wall of said lower chamber, said discharge tube having a skirt at the lower end thereof which strikes said seal means to limit the upward movement of said discharge tube, said skirt have a pin rigidly connected thereto which extends down-wardly from said discharge tube means and is slidably received in a hollow upper section of said cup-shaped piston.
a. a generally cylindrical chamber including an upper chamber and a lower chamber, said generally cylindrical chamber being adapted to be sealed into a neck of said container, said upper chamber being closed at the upper end with respect to said container by seal means;
b. discharge tube means mounted in said seal means and extending therethrough into said generally cylindrical chamber, said discharge tube being resiliently biased toward the upper end of said upper chamber and being movable axially in said generally cylindrical chamber; and c. a cup-shaped piston member connected to said discharge tube with its open end towards the lower end of said lower chamber, said cup-shaped piston member having a laterally resilient rim with the entire periphery thereof sliding directly against the side wall of said lower chamber when said discharge tube is depressed a predetermined amount to isolate a metered quantity of fluid within said upper chamber, said rim of said cup-shaped piston member being sufficiently resilient to allow fluids introduced under pressure through said discharge tube during filling of said container to flow between said rim and said side wall of said lower chamber, said discharge tube having a skirt at the lower end thereof which strikes said seal means to limit the upward movement of said discharge tube, said skirt have a pin rigidly connected thereto which extends down-wardly from said discharge tube means and is slidably received in a hollow upper section of said cup-shaped piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA374,906A CA1126702A (en) | 1979-02-21 | 1981-04-07 | Pressure fillable dispensing device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/013,090 US4220265A (en) | 1979-02-21 | 1979-02-21 | Pressure fillable dispensing device |
| CA345,565A CA1112615A (en) | 1979-02-21 | 1980-02-13 | Pressure fillable dispensing device |
| CA374,906A CA1126702A (en) | 1979-02-21 | 1981-04-07 | Pressure fillable dispensing device |
| US013,090 | 1987-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1126702A true CA1126702A (en) | 1982-06-29 |
Family
ID=27166583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA374,906A Expired CA1126702A (en) | 1979-02-21 | 1981-04-07 | Pressure fillable dispensing device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1126702A (en) |
-
1981
- 1981-04-07 CA CA374,906A patent/CA1126702A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |