CA1318884C - Applicator assembly - Google Patents
Applicator assemblyInfo
- Publication number
- CA1318884C CA1318884C CA000530818A CA530818A CA1318884C CA 1318884 C CA1318884 C CA 1318884C CA 000530818 A CA000530818 A CA 000530818A CA 530818 A CA530818 A CA 530818A CA 1318884 C CA1318884 C CA 1318884C
- Authority
- CA
- Canada
- Prior art keywords
- seat plate
- valve seat
- dauber
- container
- valve
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/11—Vats or other containers for liquids or other fluent materials
-
- 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
- G01F11/28—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 stationary measuring chambers having constant volume during measurement
- G01F11/286—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 stationary measuring chambers having constant volume during measurement where filling of the measuring chamber is effected by squeezing a supply container that is in fluid connection with the measuring chamber and excess fluid is sucked back from the measuring chamber during relaxation of the supply container
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M35/00—Devices for applying media, e.g. remedies, on the human body
Landscapes
- Health & Medical Sciences (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Closures For Containers (AREA)
- Devices For Dispensing Beverages (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Applicator assembly for use on a container for liquids comprising a cap portion having means for detachably securing it over a discharge opening in the container, an upstanding wall, an upstanding post member having an opening communicating with the interior of the container and defining with the cylindrical wall portion a measuring chamber for a predetermined measured quantity of the liquid, a valve seat plate member mounted at the open end of said cylindrical wall and having a tapered wall portion terminating In e valve opening, a flexible dauber mounted over the outer end of said valve seat plate member and having a depending valve element normally sealing the discharge opening therein, said valve member actuable inwardly to permit flow of fluid from the measuring chamber to a dispensing chamber defined by the dauber and valve seat plate member.
Applicator assembly for use on a container for liquids comprising a cap portion having means for detachably securing it over a discharge opening in the container, an upstanding wall, an upstanding post member having an opening communicating with the interior of the container and defining with the cylindrical wall portion a measuring chamber for a predetermined measured quantity of the liquid, a valve seat plate member mounted at the open end of said cylindrical wall and having a tapered wall portion terminating In e valve opening, a flexible dauber mounted over the outer end of said valve seat plate member and having a depending valve element normally sealing the discharge opening therein, said valve member actuable inwardly to permit flow of fluid from the measuring chamber to a dispensing chamber defined by the dauber and valve seat plate member.
Description
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8ACKGROIJND OF Ti- IE INVEINTION
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a. IField of the Inventlon:
' ' . ' .
The present Invention relates to packages for measuring and dispensing liquid products and specifically to 8 package assembly for dispensing predetermined measured quantitle~ of llquids.
.. . , '' . ~ ' : :' b. Description of the Prinr Art: ~
.. - .
Measuring and dispensing package assemblies are not new per se. For example, the United States Patent to Robart J. Donohue No. 4,077,547 entitled MEASURING AND DISPENSING APPARATUS Issued March 7,197B shows a package assembly comprising a flexible wall contalner having a threaded finish, a measuring and dispensing section mounted above the container and tube means extending from the messuring and dispensing section into the container. The dispens}ng sectlon has an upstanding tubular member having a bore }n flu}d commun}cst}on wlth an outlet or}flce disposed at the upper term}nal end thereof.
The tube means extends Into the bore of the upstandlng dlspenslng member. In th}s fashion when It is desired to dlspense a measured quantity of a llguid from the conta}ner, the user slmply squeezes the walls of the contalner whereby liquld }s dlsplac3d through the tube into the bore of the up~tandlng portlon out the outlet or}f}ce and Into thu meastlrlng chamber. If the volume of llquld dlspi3nsed from thfl contalnur Into the manlurln~ chamber lo In n~cess ot a pred~3turmlned volum-3 =; I :flrmlnRd hy th= ilpp=r fRC= 0~ thR IpRtRlldln9 tUbtllRr m=mbRr, =XRRR; lI luld ~.~,',,'~~.'..''~;`
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wlll be withdrawn back into the container when t'he squee,zlng pres3ure ls relessed.
Similar measuring and dispensing aasemblies are shown In United States Patent Nos. 3,347,42û and 3,581,953.
OF interest also Is United States Patent No. 4,133,614 issued January 9, 1979 to John R. Baglnsky for DAUE~ER AND METHOD OF ASSEMBLY. This patent shows a dauber fitrnent comprlsing a plurality of elements including a valve member, a resilient porous elementJ a flexible porous appllcator pad and retaining ring for retalning the parts in the as~embled condltlon.
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SUMMARY OF THE INVENTION
Even though the above described prior art assemblies are generNlly sui-table for the purposes intended, the present invention provides a more simplified assembly which is economical to manufacture and assemble and has certain functional advantages over the prior assemblies discussed above. To this end, the dispensing and measuring assembly of the present invention comprises a unitary cap and dispensing chamber section having means for applying it over the discharge opening of a flexible container for a liquid to be dispensed. The section includes an upstanding discharge port in the measuring section for mounting a tube extending do~nwardly into the container. A dauber assembly is mounted at the outer end of the measuring chamber having valve means normally sealing the discharge end of the dispensing chamber and operable upon applying pressure to the flexible dauber head to be actuated to an open position permitting flow of fluid from the measuring chamber to the dauber head.
With the foregoing in mind, an object of the present invention is to provide a package for measuring and dispensing }iquld products which is of relatively simplified design that is easy and economical to manufacture ~nd assemble.
~ ere described is an applicator assembly which can be easily and quickly applied to conventional squeeze-type cont~iners and uhich is characterized by novel features of construction and arrangement facilitating withdrawal and dispensing of predetermined controlled quantities of the liquid product and ~hich ensures dispensing the sa~e quantity for each successive activation thereof.
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Further described is an applicator assembly of the above type which is truly leak-proof by reason of a novel arrangement of seals between the interengaging parts comprising the assembly.
Yet Eurther described is an applicator assembly wherein the user can visually determine the premeasured dosage to thereby ensure accuracy of the premeasured quantity dispensed over repeated uses of the applicator assembly Still further described is a novel, Elexib:Le dauber assembly made of a resilient material such as rubber which ensures dispensing of all the premeasured quantity as compared to daubers incorporating a porous element such as in Baginsky.
And yet further described is an applicator assembly wherein the dauber includes a control valve element normally sealing the dispensing and measuring chambers from one another and wherein the member separating the measuring and dispensing chambers is of a funnel-shaped configuration to ensure compiete discharge of a premeasured quantity of the liquid from the measuring chamber to the dispensing chamber upon actuation of the dauber valve element.
In accordance with a first aspect of the invention, there is provided an applicator assembly comprising a container for liquids having a bottom wall member, a cap member having means for detachably securing it over a discharge opening in said container, an upstanding wall, a bottom wall having an upstanding post member having an opening communicating with the interior of said container and defining a measuring chamber for a predetermined measured quantity of the liquid, with a cylindrical wall portion of said cap member, an elongated tubular member mounted in said opening in said post member extending downwardly into said container ~8~
adjacent the lowest portion of said bottom wall member, a valve seat plate member mounted at the open end oE said cylindrical wall portion and having a wall portion terminating in a valve opening which is tapered towards said valve opening and Eunctions as a funnel during discharge of contents to ensure complete transfer from the measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber having outlet holes and mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing the valve opening therein, said valve member actuatable inwardly by pressure to overcome ~he bias of said dauber to permit flow of fluid from the measuring chamber to an enclosed dispensing chamber defined by said dauber and valve seat plate member.
In accordance with a second aspect of the invention, there is provided an applicator assembly comprising a container for liquids having a lS bottom wall, a cap member having means for detachably securing it over a discharge opening in said container, a valve seat plate member mounted at the open end of said cap member, a metering plate of generally M-shaped cross section disposed between the container and valve seat plate member and wherein a measuring chamber is defined between an upstanding outer wall of said valve seat plate member and a wall of a retainer cap holding the valve seat plate member in place over said discharge opening in the container spaced radially outwardly from said upstanding outer wall of said valve seat plate member, sa;d valve seat plate member having a wall portion which is tapered towards a valve opening and functions as a funnel during discharge of contents to ensure complete transfer of fluid from said measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber ~8~
having outlet holes mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing said opening in said plate member, said valve member actuatable inwardly by pressure to overcome the bias of said dauber to permit flow of fluid from the measuring chamber to said dispensing chamber defined by the dauber and valve seat plate member.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention will now be described with reference to the accompanying drawings, wherein:
Fig. 1 is a side elevational view partly in section of a measuring and dispensing package embodying the present invention;
Fig. 2 is a top plan view thereof;
Fig. 3 is an exploded perspective view of the elements comprising the measuring chamber and dispensing dauber;
Fig. 4 is an enlarged sectional view taken on lines 4-4 of Fig. l;
Fig. 5 is an enlarged sectional view similar to Fig. 4 showing the dauber valve in an open position;
Fig. 6 is a transverse sectional view of a modifi.ed form of measuring and dispensing assembly embodying the present invention showing the dauber valve in a closed position; and Fig. 7 is an enlarged sectional view similar to Fig. 6 showing the dauber valve in an open dispensing position.
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DESCRIPTION OF THE PREFBRRED EMBOD~MENTS
Referring now to the drawings and particularly to Figs 1-5 thereof, there is lllustrated a measuring and dispensing assembly for use on squee2e-type containers for liquid products. The assembly is adapted for dispensing liquids such as medicaments used as topicals for application to the skin of human beings. The package embodging the invention is particularly suited for use with medicaments where it is desired and necessary to dispense accurately controlled, measured quantlt~es for periodic application of these precise quantities over an extended period of time. The flexlble container 10 i~ preferably made of a plastic material quch as polyethylene and is of generally circular cross sectlon, including, in the present instance, a conical base 12 to facilitate wlthdrawal of the entire contents of the container by a dip tube 13 in a matmer described in more detail below. An adapter in the form of a collar 14 snap fitted by a rib 16 and groove 18 to the conical base 12 serves as a stand for supportlng the package in an upright positlon. The container 10 as illustrated has an upstanding neck portlon 20 definlng a discharge opening 22. The neck 20 i9 provided with conventional external screw threads 24 so that it may be sealed by a conventional internally screw-threaded cap or the like. (not shown) The measuring and dispensing assembly is provided which is characterized by novel features of construction and arrangement which provides for accurate dispensing of preselected, premeasured quantities of liquid products. The asse~bly is also of relatively simplified design 90 that it is easy and economical to manufacture and assemble to containers of the type described above. The assembly referenced generally by the numeral 30 is characteri2ed by a novel sealing arrangement for sanitary considerations and also for preciseness in the quantities of the liquid product being dispensed. To this end, the assembly includes a combinfltion cap and measuring and dispensing chamber sub-assembly comprising, a~ best illu~ttatcd in Fi~. 3, a cap portion 32 o~
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inverted cup-like form havlng a top 33 and depending sklrt 34 wlth internal screw threads 35 which rnate wlth the external threads 24 on the neck of the container 10 to facllitate mounting of the as~smbly over the dlscharge end of the container and an upstandlng generally cyllndrlcal wall 36 proJecting upulardly from the outer face 33 of the top of the cap. The cap portion 32 alElo Includes a generally cylindrical dependlng flange 40 havlng a feathered or beveled lower terminal edge 42 which engages Interlorly of the neck 20 of the contalner and whlch together with a ~ealing rib 44 spaced radlally outwardly therefrom engages the axtal end face of the neck of the contalner when applied theret~ in the manner shown in the drawing3 to ensure a fluid-tlght seal between the messurlng and dispensing assembly and the container.
As illustrated In Figs. 3-5 Inclusive, the cap section ~i~ has an upstanding center projection or post 46 disposed centrally of the measurlng chamber having an axially oriented discharge port 4û extending therethrough. The discharge port - 48, as illustrated, has an enlarged portion 50 for mounting a tube 52 to dra~v liquid contents from the container into a measuring chamber CM. The height of the post 46 above the level of the top wall 33 of the cap 30 coupled with ths internal diameter of the measuring chamber determines the controlled, premeasured volume which can be dispensed. Of course, this volume may be selectively varied in a comblnation cap and disp0nslng chamber sub-assembly by simply changing the height of the post 46 and/or the diameter of the measuring chamber CM.
In the present Instance, the dispensing essembly further includes a valve . seat plate member 60 of generally elongated tubular configuration havlng a feathered lower sklrt portion 62 havlng? In the present Instance, a palr of axially spaced clrcumferentlally extendlng radlàily outwardly proJectlng seallng rlbs 6b.
which are adapted to engage In Internal grooves 66 in the Inner side wall of the measuring chamber CM Note that the cylindrlcal wall }6 deflning the measurlng chamber CM 18 tapered adjacent Its upper open termlnal edge and 18 stepped as at 68 to deflne an enlarged pilot portlon For easy In3ertlon and assembly of the valvè
~eat plate 60. The valve aeat plate 6û as Illustrated has a stepped 3houlder 70 .
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adjacent its upper terminal end which overlies the outer side wall oF the dispensing chamber in the assembled relation in the manner shown in Figs. 4 and 5. The valve seat plate 60 as illustrated include3 an interior stepped frusto- :
conlcal wall 72 includlng tapered wall sections 72a, 72b havlng a central openlng 74 defining a valve seat. Note the tapered wall sections 72a, 72b ensure complete purging ol the measuring chamber.
The valve seat plate 60 mounts a dispensing dauber 80 made of a flexlble i material such as rubber and comprises a dome sectiorl 82 having a depending - -cylindrical wall portion ~4~merging with a radially outwardly directed `
circumferentially extending lip 86. The dome section 82 has fluid discharge means~
in the present instance in the form of a series of circumferentially spaced discharge openings 88 arranged in a circular array. The openings 88 are preferably normal to the outwardly convex curvametric surface 82a. Thls configuration functions as a spring to normally malntain the valve portion 92 seated,and also to return it to a seated position after actuation as illustrated in Fig. 5. Centraliy of the discharge openings, the dome section has a depending valve stem 90 having an enlarged tapered frusto-conical valve portion 92 which engages through th~
discharg0 opening -74 in the valve seat and is normally biased to a sealed or seated position (Flg. 4). The dauber is detachably supported in place by a retaining ring 95 having a short radially inwardly directed outer flange 96 which seats against the lip 86 of the dauber and a beveled lower locking flange 97 which engages in a;
circumferentlally extending locking groove 98 in the outer peripheral wall of the valve seat plate to lock the parts in place in the manner shown in Figs. 4 and 5.~;
The element~ comprising the new measuring and dispensing assembly may be assembled and applied to a container easily and quickly. For example, the valve seat plate 60 is assembled to the cap sectlon 32 by telescoping the valve seat plate 60 until the sealing ribs 64 snap into and seat in the grooves 66 on the inner sldewall 36 o~ the measuring chamber CM. In this position the sealing bead 62a at the lower ena of the sklrt portlon 62 s~EIt3 ~nd seals a~alnst a clrcumferentially extendlng shelf or shoulder on the Intnrior wall ' ' ' '' . ~ 1, . . ,, , .
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36 of the rneasuring chamber CM. The dauber 80 is thsn assembled to the valve seat plats 60 slmply by positioning It over the open end of the valve seat plate and then pre3slng the dauber 00 and retaining rlng 95 In place. The dlp tube 13 is then pressed Into the enlarged bore of ths center poat. The a3sembly may then be applled to a squeeze-type container 10 and the entlre unit i8 now ready to use.
Consider now briefly operation and use of a packag~ Incorporating the e~ ~t4~y; 13 A measuring and dispenslng unit _the present Invention. With the package in an upright position as Illustrated in Flg. 1, the user simply squeezes the side wall of the flexible contalner 10 whlch producecl flow of liquld through the tube 13 into the measuring chamber CM until a measured quantlty of the liquid Is accumulated therein as shown in Fig. 4. When the squeezing motion is stopped, any excess liquid will flow back through the tube 13 Into the container so that the quant}ty remaining in the measuring chamber CM is the precise quantity required. ~ndicia in the form of a line marker 99 may be provided on the wall of the measuring chamber CM to provide visual means for the user to determine that the precise quantity desired for a given applicatlon has been withdrawn from the container. The assembly is then inverted whereby the fluld flows to the top of the measuring chamber which i3 sealed by the valve 92 of the dauber B0. When the dauber 80 is now pressed against the skin of the user, the valve stem i8 displaced inwardly to permit flow of the measured quantity of liquid Into the dispensing chamber CD behind the dauber. The dauber i5 then simply moved over the sl<in surface until the premeasured quantity has been dispensed through the discharge openings BB.
- There i8 illustrated in Fig3. 6 and 7 another embodiment of measuring and dispensing assembly in sccordance with the present Inventlon for mountlng over the discharge end of a squeeze-type container. The contalner 13 Identlcal to that descrlbed previously and i3 of the squeeze type. However, in this instance, the measurlng and dlspenslng sub-as~embly 18 somewhat dlfferent In it8 components and arrangoment. In the pre~ent Inst~nce, the asoembly Include~ a meterlng plate 102 of generally M-shaped cross sectlon havlng as Illustrated a central dopendlng , . , : , . ' i~ ~ ' ' '~' ' ' -- 9 ~
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collar 104 defining a well 105 aligned with and concentric to the dauber valve element which can nest thereln upon actuation o~ the dauber providing a compact arrangement of elements. The collar has tapered base terminating In a central opening 106 deflnlng a flulci dlscharge port. The opening i9 enlarged to accommodate a dip tube 108 which extends to the bottom of the container to withdraw the liquid contents therefrom when desired. The meterlng plate, as Illustrated, has a clrcumferentially extending depending sealing flange 110 which engages interiorly of the discharge opening 112 in the container neck 114 and a radlally outwardly directed flange 116 wlth a sealing bead 118 on Its lower surface which confronts and engages the axlally end face of the bottle finish. The metering plate 102 further includes a series of three circumferentially spaced upstanding ribs 120 which support a valve seat plate 122. In the present instance the dauber valve 124 overlies a circumferentially upstanding cylindrical wall 126 of the valve seat plate and Is firmly seated sealed against the seat plate by an overcap 130 which has internal threads 132 cooperatlng with external screw threads 134 on the container finish. The retainer cover, as illustrated, has two sealing shoulders 136,138 wlth circumferentially extending sealing beads 136a, 138a which engage, secure and seal the meterlng plate, valve seat plate and dauber valve in the relative position shown when it Is fully seated on the neck of the container. The container neck has dlametrically opposed radially projecting teeth 140 engageable in axial grooves 142 formed in the lower portion of retainer 130 to permit assembly and then serve to lock the parts. This arrangement provides a child-resistant feature.
In accordance with this embodiment of the invention, the measuring chamber CM i8 defined by the annular space surroundlng the meterlng plate.
Considering now use of the dispenser applicator assembly to dispense predetermined measured quantities of the liquid, the user simply exerts an inward pres~urc on the side wall of ths contslncr which causes llquld to flow upwardly throu~h thc central port and into the measurln~ chnmbor CM. Whcn th~ chamber ha~ beon flllcd to thc Icvel of thc top of thu rmcterln~ plato, any cxoe~s liquld wlll ,.. ...
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flow through the central enlarged accumulator opening which is also of a size to accommodats the dauber valve element with the return of the container to its original upright position. Now tha user simply Inverts the assembly and presses the dauber agalnst the skin surface to whlch it Is deslred to apply the llquid whereupon the valve opens and the premeasured quantity flows into the accumulatlon or dispensing chamber CD behind the dauber valve and flows outwardly through the openlngs therein to the skin of the user.
While partlcular embodiments of the present lnvention have been illustrated and described herein It Is not intended to llmlt the inventlon and changes and modificatlons may be made thereln within the scope of the following -claims.
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8ACKGROIJND OF Ti- IE INVEINTION
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a. IField of the Inventlon:
' ' . ' .
The present Invention relates to packages for measuring and dispensing liquid products and specifically to 8 package assembly for dispensing predetermined measured quantitle~ of llquids.
.. . , '' . ~ ' : :' b. Description of the Prinr Art: ~
.. - .
Measuring and dispensing package assemblies are not new per se. For example, the United States Patent to Robart J. Donohue No. 4,077,547 entitled MEASURING AND DISPENSING APPARATUS Issued March 7,197B shows a package assembly comprising a flexible wall contalner having a threaded finish, a measuring and dispensing section mounted above the container and tube means extending from the messuring and dispensing section into the container. The dispens}ng sectlon has an upstanding tubular member having a bore }n flu}d commun}cst}on wlth an outlet or}flce disposed at the upper term}nal end thereof.
The tube means extends Into the bore of the upstandlng dlspenslng member. In th}s fashion when It is desired to dlspense a measured quantity of a llguid from the conta}ner, the user slmply squeezes the walls of the contalner whereby liquld }s dlsplac3d through the tube into the bore of the up~tandlng portlon out the outlet or}f}ce and Into thu meastlrlng chamber. If the volume of llquld dlspi3nsed from thfl contalnur Into the manlurln~ chamber lo In n~cess ot a pred~3turmlned volum-3 =; I :flrmlnRd hy th= ilpp=r fRC= 0~ thR IpRtRlldln9 tUbtllRr m=mbRr, =XRRR; lI luld ~.~,',,'~~.'..''~;`
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wlll be withdrawn back into the container when t'he squee,zlng pres3ure ls relessed.
Similar measuring and dispensing aasemblies are shown In United States Patent Nos. 3,347,42û and 3,581,953.
OF interest also Is United States Patent No. 4,133,614 issued January 9, 1979 to John R. Baglnsky for DAUE~ER AND METHOD OF ASSEMBLY. This patent shows a dauber fitrnent comprlsing a plurality of elements including a valve member, a resilient porous elementJ a flexible porous appllcator pad and retaining ring for retalning the parts in the as~embled condltlon.
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~31~
SUMMARY OF THE INVENTION
Even though the above described prior art assemblies are generNlly sui-table for the purposes intended, the present invention provides a more simplified assembly which is economical to manufacture and assemble and has certain functional advantages over the prior assemblies discussed above. To this end, the dispensing and measuring assembly of the present invention comprises a unitary cap and dispensing chamber section having means for applying it over the discharge opening of a flexible container for a liquid to be dispensed. The section includes an upstanding discharge port in the measuring section for mounting a tube extending do~nwardly into the container. A dauber assembly is mounted at the outer end of the measuring chamber having valve means normally sealing the discharge end of the dispensing chamber and operable upon applying pressure to the flexible dauber head to be actuated to an open position permitting flow of fluid from the measuring chamber to the dauber head.
With the foregoing in mind, an object of the present invention is to provide a package for measuring and dispensing }iquld products which is of relatively simplified design that is easy and economical to manufacture ~nd assemble.
~ ere described is an applicator assembly which can be easily and quickly applied to conventional squeeze-type cont~iners and uhich is characterized by novel features of construction and arrangement facilitating withdrawal and dispensing of predetermined controlled quantities of the liquid product and ~hich ensures dispensing the sa~e quantity for each successive activation thereof.
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Further described is an applicator assembly of the above type which is truly leak-proof by reason of a novel arrangement of seals between the interengaging parts comprising the assembly.
Yet Eurther described is an applicator assembly wherein the user can visually determine the premeasured dosage to thereby ensure accuracy of the premeasured quantity dispensed over repeated uses of the applicator assembly Still further described is a novel, Elexib:Le dauber assembly made of a resilient material such as rubber which ensures dispensing of all the premeasured quantity as compared to daubers incorporating a porous element such as in Baginsky.
And yet further described is an applicator assembly wherein the dauber includes a control valve element normally sealing the dispensing and measuring chambers from one another and wherein the member separating the measuring and dispensing chambers is of a funnel-shaped configuration to ensure compiete discharge of a premeasured quantity of the liquid from the measuring chamber to the dispensing chamber upon actuation of the dauber valve element.
In accordance with a first aspect of the invention, there is provided an applicator assembly comprising a container for liquids having a bottom wall member, a cap member having means for detachably securing it over a discharge opening in said container, an upstanding wall, a bottom wall having an upstanding post member having an opening communicating with the interior of said container and defining a measuring chamber for a predetermined measured quantity of the liquid, with a cylindrical wall portion of said cap member, an elongated tubular member mounted in said opening in said post member extending downwardly into said container ~8~
adjacent the lowest portion of said bottom wall member, a valve seat plate member mounted at the open end oE said cylindrical wall portion and having a wall portion terminating in a valve opening which is tapered towards said valve opening and Eunctions as a funnel during discharge of contents to ensure complete transfer from the measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber having outlet holes and mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing the valve opening therein, said valve member actuatable inwardly by pressure to overcome ~he bias of said dauber to permit flow of fluid from the measuring chamber to an enclosed dispensing chamber defined by said dauber and valve seat plate member.
In accordance with a second aspect of the invention, there is provided an applicator assembly comprising a container for liquids having a lS bottom wall, a cap member having means for detachably securing it over a discharge opening in said container, a valve seat plate member mounted at the open end of said cap member, a metering plate of generally M-shaped cross section disposed between the container and valve seat plate member and wherein a measuring chamber is defined between an upstanding outer wall of said valve seat plate member and a wall of a retainer cap holding the valve seat plate member in place over said discharge opening in the container spaced radially outwardly from said upstanding outer wall of said valve seat plate member, sa;d valve seat plate member having a wall portion which is tapered towards a valve opening and functions as a funnel during discharge of contents to ensure complete transfer of fluid from said measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber ~8~
having outlet holes mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing said opening in said plate member, said valve member actuatable inwardly by pressure to overcome the bias of said dauber to permit flow of fluid from the measuring chamber to said dispensing chamber defined by the dauber and valve seat plate member.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention will now be described with reference to the accompanying drawings, wherein:
Fig. 1 is a side elevational view partly in section of a measuring and dispensing package embodying the present invention;
Fig. 2 is a top plan view thereof;
Fig. 3 is an exploded perspective view of the elements comprising the measuring chamber and dispensing dauber;
Fig. 4 is an enlarged sectional view taken on lines 4-4 of Fig. l;
Fig. 5 is an enlarged sectional view similar to Fig. 4 showing the dauber valve in an open position;
Fig. 6 is a transverse sectional view of a modifi.ed form of measuring and dispensing assembly embodying the present invention showing the dauber valve in a closed position; and Fig. 7 is an enlarged sectional view similar to Fig. 6 showing the dauber valve in an open dispensing position.
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DESCRIPTION OF THE PREFBRRED EMBOD~MENTS
Referring now to the drawings and particularly to Figs 1-5 thereof, there is lllustrated a measuring and dispensing assembly for use on squee2e-type containers for liquid products. The assembly is adapted for dispensing liquids such as medicaments used as topicals for application to the skin of human beings. The package embodging the invention is particularly suited for use with medicaments where it is desired and necessary to dispense accurately controlled, measured quantlt~es for periodic application of these precise quantities over an extended period of time. The flexlble container 10 i~ preferably made of a plastic material quch as polyethylene and is of generally circular cross sectlon, including, in the present instance, a conical base 12 to facilitate wlthdrawal of the entire contents of the container by a dip tube 13 in a matmer described in more detail below. An adapter in the form of a collar 14 snap fitted by a rib 16 and groove 18 to the conical base 12 serves as a stand for supportlng the package in an upright positlon. The container 10 as illustrated has an upstanding neck portlon 20 definlng a discharge opening 22. The neck 20 i9 provided with conventional external screw threads 24 so that it may be sealed by a conventional internally screw-threaded cap or the like. (not shown) The measuring and dispensing assembly is provided which is characterized by novel features of construction and arrangement which provides for accurate dispensing of preselected, premeasured quantities of liquid products. The asse~bly is also of relatively simplified design 90 that it is easy and economical to manufacture and assemble to containers of the type described above. The assembly referenced generally by the numeral 30 is characteri2ed by a novel sealing arrangement for sanitary considerations and also for preciseness in the quantities of the liquid product being dispensed. To this end, the assembly includes a combinfltion cap and measuring and dispensing chamber sub-assembly comprising, a~ best illu~ttatcd in Fi~. 3, a cap portion 32 o~
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inverted cup-like form havlng a top 33 and depending sklrt 34 wlth internal screw threads 35 which rnate wlth the external threads 24 on the neck of the container 10 to facllitate mounting of the as~smbly over the dlscharge end of the container and an upstandlng generally cyllndrlcal wall 36 proJecting upulardly from the outer face 33 of the top of the cap. The cap portion 32 alElo Includes a generally cylindrical dependlng flange 40 havlng a feathered or beveled lower terminal edge 42 which engages Interlorly of the neck 20 of the contalner and whlch together with a ~ealing rib 44 spaced radlally outwardly therefrom engages the axtal end face of the neck of the contalner when applied theret~ in the manner shown in the drawing3 to ensure a fluid-tlght seal between the messurlng and dispensing assembly and the container.
As illustrated In Figs. 3-5 Inclusive, the cap section ~i~ has an upstanding center projection or post 46 disposed centrally of the measurlng chamber having an axially oriented discharge port 4û extending therethrough. The discharge port - 48, as illustrated, has an enlarged portion 50 for mounting a tube 52 to dra~v liquid contents from the container into a measuring chamber CM. The height of the post 46 above the level of the top wall 33 of the cap 30 coupled with ths internal diameter of the measuring chamber determines the controlled, premeasured volume which can be dispensed. Of course, this volume may be selectively varied in a comblnation cap and disp0nslng chamber sub-assembly by simply changing the height of the post 46 and/or the diameter of the measuring chamber CM.
In the present Instance, the dispensing essembly further includes a valve . seat plate member 60 of generally elongated tubular configuration havlng a feathered lower sklrt portion 62 havlng? In the present Instance, a palr of axially spaced clrcumferentlally extendlng radlàily outwardly proJectlng seallng rlbs 6b.
which are adapted to engage In Internal grooves 66 in the Inner side wall of the measuring chamber CM Note that the cylindrlcal wall }6 deflning the measurlng chamber CM 18 tapered adjacent Its upper open termlnal edge and 18 stepped as at 68 to deflne an enlarged pilot portlon For easy In3ertlon and assembly of the valvè
~eat plate 60. The valve aeat plate 6û as Illustrated has a stepped 3houlder 70 .
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adjacent its upper terminal end which overlies the outer side wall oF the dispensing chamber in the assembled relation in the manner shown in Figs. 4 and 5. The valve seat plate 60 as illustrated include3 an interior stepped frusto- :
conlcal wall 72 includlng tapered wall sections 72a, 72b havlng a central openlng 74 defining a valve seat. Note the tapered wall sections 72a, 72b ensure complete purging ol the measuring chamber.
The valve seat plate 60 mounts a dispensing dauber 80 made of a flexlble i material such as rubber and comprises a dome sectiorl 82 having a depending - -cylindrical wall portion ~4~merging with a radially outwardly directed `
circumferentially extending lip 86. The dome section 82 has fluid discharge means~
in the present instance in the form of a series of circumferentially spaced discharge openings 88 arranged in a circular array. The openings 88 are preferably normal to the outwardly convex curvametric surface 82a. Thls configuration functions as a spring to normally malntain the valve portion 92 seated,and also to return it to a seated position after actuation as illustrated in Fig. 5. Centraliy of the discharge openings, the dome section has a depending valve stem 90 having an enlarged tapered frusto-conical valve portion 92 which engages through th~
discharg0 opening -74 in the valve seat and is normally biased to a sealed or seated position (Flg. 4). The dauber is detachably supported in place by a retaining ring 95 having a short radially inwardly directed outer flange 96 which seats against the lip 86 of the dauber and a beveled lower locking flange 97 which engages in a;
circumferentlally extending locking groove 98 in the outer peripheral wall of the valve seat plate to lock the parts in place in the manner shown in Figs. 4 and 5.~;
The element~ comprising the new measuring and dispensing assembly may be assembled and applied to a container easily and quickly. For example, the valve seat plate 60 is assembled to the cap sectlon 32 by telescoping the valve seat plate 60 until the sealing ribs 64 snap into and seat in the grooves 66 on the inner sldewall 36 o~ the measuring chamber CM. In this position the sealing bead 62a at the lower ena of the sklrt portlon 62 s~EIt3 ~nd seals a~alnst a clrcumferentially extendlng shelf or shoulder on the Intnrior wall ' ' ' '' . ~ 1, . . ,, , .
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36 of the rneasuring chamber CM. The dauber 80 is thsn assembled to the valve seat plats 60 slmply by positioning It over the open end of the valve seat plate and then pre3slng the dauber 00 and retaining rlng 95 In place. The dlp tube 13 is then pressed Into the enlarged bore of ths center poat. The a3sembly may then be applled to a squeeze-type container 10 and the entlre unit i8 now ready to use.
Consider now briefly operation and use of a packag~ Incorporating the e~ ~t4~y; 13 A measuring and dispenslng unit _the present Invention. With the package in an upright position as Illustrated in Flg. 1, the user simply squeezes the side wall of the flexible contalner 10 whlch producecl flow of liquld through the tube 13 into the measuring chamber CM until a measured quantlty of the liquid Is accumulated therein as shown in Fig. 4. When the squeezing motion is stopped, any excess liquid will flow back through the tube 13 Into the container so that the quant}ty remaining in the measuring chamber CM is the precise quantity required. ~ndicia in the form of a line marker 99 may be provided on the wall of the measuring chamber CM to provide visual means for the user to determine that the precise quantity desired for a given applicatlon has been withdrawn from the container. The assembly is then inverted whereby the fluld flows to the top of the measuring chamber which i3 sealed by the valve 92 of the dauber B0. When the dauber 80 is now pressed against the skin of the user, the valve stem i8 displaced inwardly to permit flow of the measured quantity of liquid Into the dispensing chamber CD behind the dauber. The dauber i5 then simply moved over the sl<in surface until the premeasured quantity has been dispensed through the discharge openings BB.
- There i8 illustrated in Fig3. 6 and 7 another embodiment of measuring and dispensing assembly in sccordance with the present Inventlon for mountlng over the discharge end of a squeeze-type container. The contalner 13 Identlcal to that descrlbed previously and i3 of the squeeze type. However, in this instance, the measurlng and dlspenslng sub-as~embly 18 somewhat dlfferent In it8 components and arrangoment. In the pre~ent Inst~nce, the asoembly Include~ a meterlng plate 102 of generally M-shaped cross sectlon havlng as Illustrated a central dopendlng , . , : , . ' i~ ~ ' ' '~' ' ' -- 9 ~
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collar 104 defining a well 105 aligned with and concentric to the dauber valve element which can nest thereln upon actuation o~ the dauber providing a compact arrangement of elements. The collar has tapered base terminating In a central opening 106 deflnlng a flulci dlscharge port. The opening i9 enlarged to accommodate a dip tube 108 which extends to the bottom of the container to withdraw the liquid contents therefrom when desired. The meterlng plate, as Illustrated, has a clrcumferentially extending depending sealing flange 110 which engages interiorly of the discharge opening 112 in the container neck 114 and a radlally outwardly directed flange 116 wlth a sealing bead 118 on Its lower surface which confronts and engages the axlally end face of the bottle finish. The metering plate 102 further includes a series of three circumferentially spaced upstanding ribs 120 which support a valve seat plate 122. In the present instance the dauber valve 124 overlies a circumferentially upstanding cylindrical wall 126 of the valve seat plate and Is firmly seated sealed against the seat plate by an overcap 130 which has internal threads 132 cooperatlng with external screw threads 134 on the container finish. The retainer cover, as illustrated, has two sealing shoulders 136,138 wlth circumferentially extending sealing beads 136a, 138a which engage, secure and seal the meterlng plate, valve seat plate and dauber valve in the relative position shown when it Is fully seated on the neck of the container. The container neck has dlametrically opposed radially projecting teeth 140 engageable in axial grooves 142 formed in the lower portion of retainer 130 to permit assembly and then serve to lock the parts. This arrangement provides a child-resistant feature.
In accordance with this embodiment of the invention, the measuring chamber CM i8 defined by the annular space surroundlng the meterlng plate.
Considering now use of the dispenser applicator assembly to dispense predetermined measured quantities of the liquid, the user simply exerts an inward pres~urc on the side wall of ths contslncr which causes llquld to flow upwardly throu~h thc central port and into the measurln~ chnmbor CM. Whcn th~ chamber ha~ beon flllcd to thc Icvel of thc top of thu rmcterln~ plato, any cxoe~s liquld wlll ,.. ...
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flow through the central enlarged accumulator opening which is also of a size to accommodats the dauber valve element with the return of the container to its original upright position. Now tha user simply Inverts the assembly and presses the dauber agalnst the skin surface to whlch it Is deslred to apply the llquid whereupon the valve opens and the premeasured quantity flows into the accumulatlon or dispensing chamber CD behind the dauber valve and flows outwardly through the openlngs therein to the skin of the user.
While partlcular embodiments of the present lnvention have been illustrated and described herein It Is not intended to llmlt the inventlon and changes and modificatlons may be made thereln within the scope of the following -claims.
. .. .... ..
., ". ,, ,,", ~ ~
Claims (2)
1. Applicator assembly comprising a container for liquids having a bottom wall member, a cap member having means for detachably securing it over a discharge opening in said container, an upstanding wall, a bottom wall having an upstanding post member having an opening communicating with the interior of said container and defining a measuring chamber for a predetermined measured quantity of the liquid, with a cylindrical wall portion of said cap member, an elongated tubular member mounted in said opening in said post member extending downwardly into said container adjacent the lowest portion of said bottom wall member, a valve seat plate member mounted at the open end of said cylindrical wall portion and having a wall portion terminating in a valve opening which is tapered towards said valve opening and functions as a funnel during discharge of contents to ensure complete transfer from the measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber having outlet holes and mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing the valve opening therein, said valve member actuatable axially by pressure to overcome the bias of said dauber to permit flow of fluid from the measuring chamber to an enclosed dispensing chamber defined by said dauber and valve seat plate member.
2. Applicator assembly comprising a container for liquids having a bottom wall, a cap member having means for detachably securing it over a discharge opening in said container, a valve seat plate member mounted at an inner open end of said cap member, a metering plate of generally M-shaped cross section disposed between the container and valve seat plate member and wherein a measuring chamber is defined between an upstanding outer wall of said valve seat plate member and a wall of a retainer cap holding the valve seat plate member in place over said discharge opening in the container spaced radially outwardly from said upstanding outer wall of said valve seat plate member, said valve seat plate member having a wall portion which is tapered towards a valve opening and functions as a funnel during discharge of contents to ensure complete transfer of fluid from said measuring chamber to a dispensing chamber above said measuring chamber, a flexible dauber having outlet holes mounted over the outer end of said valve seat plate member and having a depending valve element biased solely by said dauber to be normally sealing said opening in said valve seat plate member, said valve element actuatable axially by pressure to overcome the bias of said dauber to permit flow of fluid from the measuring chamber to said dispensing chamber defined by the dauber and valve seat plate member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83753586A | 1986-03-10 | 1986-03-10 | |
| US06/837,535 | 1986-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1318884C true CA1318884C (en) | 1993-06-08 |
Family
ID=25274744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000530818A Expired - Lifetime CA1318884C (en) | 1986-03-10 | 1987-02-27 | Applicator assembly |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0236871A3 (en) |
| KR (1) | KR870008629A (en) |
| CA (1) | CA1318884C (en) |
| DK (1) | DK118987A (en) |
| FI (1) | FI871023A (en) |
| NO (1) | NO870963L (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69918267T2 (en) | 1998-01-16 | 2005-07-28 | 1263152 Ontario Inc., London | DISPLAY DEVICE FOR USE WITH A DISPENSER |
| US6729330B2 (en) | 1998-05-05 | 2004-05-04 | Trudell Medical International | Indicating device for aerosol container |
| US6082358A (en) | 1998-05-05 | 2000-07-04 | 1263152 Ontario Inc. | Indicating device for aerosol container |
| US6336453B1 (en) | 1999-04-30 | 2002-01-08 | Trudell Medical International | Indicating device for aerosol container |
| US6745760B2 (en) | 2001-05-15 | 2004-06-08 | Trudell Medical International | Medicament applicator |
| US7004164B2 (en) | 2002-03-21 | 2006-02-28 | Trudell Medical International | Indicating device for aerosol container |
| US7621273B2 (en) | 2003-10-28 | 2009-11-24 | Trudell Medical International | Indicating device with warning dosage indicator |
| US7100530B2 (en) | 2003-12-15 | 2006-09-05 | Trudell Medical International, Inc. | Dose indicating device |
| US7543582B2 (en) | 2004-09-20 | 2009-06-09 | Trudell Medical International | Dose indicating device with display elements attached to container |
| US7886934B2 (en) | 2005-01-20 | 2011-02-15 | Trudell Medical International | Dispensing device |
| US8141550B2 (en) | 2006-08-01 | 2012-03-27 | Trudell Medical International | Dispensing device |
| US8082873B2 (en) | 2008-05-05 | 2011-12-27 | Trudell Medical International | Drive mechanism for an indicating device |
| US8181591B1 (en) | 2008-05-23 | 2012-05-22 | Trudell Medical International | Domed actuator for indicating device |
| CA2683353C (en) | 2008-10-22 | 2015-12-15 | Trudell Medical International | Modular aerosol delivery system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628700A (en) * | 1969-06-02 | 1971-12-21 | Robert J Dodoghue | Premeasured liquid spray and foam dispenser |
| DE3204118C2 (en) * | 1982-02-06 | 1985-04-18 | Wella Ag, 6100 Darmstadt | Dosing device |
-
1987
- 1987-02-26 EP EP87102769A patent/EP0236871A3/en not_active Ceased
- 1987-02-27 CA CA000530818A patent/CA1318884C/en not_active Expired - Lifetime
- 1987-03-06 DK DK118987A patent/DK118987A/en not_active Application Discontinuation
- 1987-03-09 NO NO870963A patent/NO870963L/en unknown
- 1987-03-09 KR KR870002099A patent/KR870008629A/en not_active Application Discontinuation
- 1987-03-09 FI FI871023A patent/FI871023A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR870008629A (en) | 1987-10-19 |
| EP0236871A2 (en) | 1987-09-16 |
| NO870963L (en) | 1987-09-11 |
| DK118987D0 (en) | 1987-03-06 |
| EP0236871A3 (en) | 1988-08-17 |
| DK118987A (en) | 1987-09-11 |
| FI871023A0 (en) | 1987-03-09 |
| NO870963D0 (en) | 1987-03-09 |
| FI871023A (en) | 1987-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |
Effective date: 20100608 |