CA1048456A - Arrangement in liquid sprayer containers - Google Patents
Arrangement in liquid sprayer containersInfo
- Publication number
- CA1048456A CA1048456A CA77278317A CA278317A CA1048456A CA 1048456 A CA1048456 A CA 1048456A CA 77278317 A CA77278317 A CA 77278317A CA 278317 A CA278317 A CA 278317A CA 1048456 A CA1048456 A CA 1048456A
- Authority
- CA
- Canada
- Prior art keywords
- cap
- nozzle
- valve mechanism
- diaphragm
- improved spray
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
- B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
- B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
- B05B9/0822—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump a discharge device being fixed to the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
- B05B9/0838—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Nozzles (AREA)
- Closures For Containers (AREA)
- Cleaning In General (AREA)
- Catching Or Destruction (AREA)
Abstract
Abstract of the Disclosure An arrangement in liquid sprayer containers designed to form an excess pressure inside said containers so as to allow said liquid contained therein to be discharged through a nozzle in the form of a spray. The arrangement includes a head provided with a manually operable valve mechanism. The nozzle is in communication with said valve mechanism and arranged, upon opening of the valve, to discharge said liquid in atomized form. A cap encloses the head and when forced downwards it compresses the air in the space enclosed by the cap, whereby the valve open.
a passage allowing the excess pressure to propagate into the container, upon elimination of the excess pressure the valve mechanism again closes said passage.
a passage allowing the excess pressure to propagate into the container, upon elimination of the excess pressure the valve mechanism again closes said passage.
Description
1~)4845~
ElACKGROUND OF THE INIIENTION
rhe present invention relates to an arrangement in liquid sprayer containers, such a~s bottles of glas or metal cans, wherein a liquid is contained under excess pressure and which are equipped with a mechanism for discharging the liquid in an atomized form, i.e. in the form of a spray.
The most common liquid containers of this kind are the so called aerosol cans wherein the liquid is kept under pressure with the aid of a propulsion or dispersion gas. Although their function is completely satisfactory these aerosol cans still suffer from several drawbacks.
For instance, since these cans are in fact pressure vessels they constitute a safety risk under certain circumstances.
Furthermore, when the container is being used, as gas, freon, is expelled together with the liquid being discharged, and this gas has proved to have very un-favourable pollutive effects on the atmosphere.
To eliminate these drawbacks a variety of constructions has been devised wherein the excess pressure necessary to atomize the liquid during the discharge thereof from the container is obtained at the very instance of use of the can or bottle. A common feature in these constructions is the provision of a head on the can or bottle which head is equipped with a mechanism 1C)48456 including a valve and a pump. With the aid of this mechanism the liquid is dispersed in an atomized form from the container through a nozzle upon each pumping mDvement The advantage of an arrangement of this kind is the possibility to use an ordinary, conventional bottle which thus need not be a pressure vessel. However, with none of the prior-art constructions of this kind has it hitherto been possible to achieve that the liquid being discharged remains in a satisfactorily atomized form during the entire pumping movement.
The moment of dispersion during each pumping mov~ment furthermore is so short that as a rule it is rather complicated to carry out a continuous working operation when several successive pumping movements are required.
In several prior-art devices the problem is badly solved constructively, with the result that the pump mechanisms may stick and the valves leak.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a novel structure designed to eliminate the risks and drawbacks inherent in prior-art constructions. The arrangement in accordance with the invention generally refers to the kind of liquid containers, such as bottles, which are equipped with a head provided with a manually 11)48456 operabla valvs mechanism and a nozzle in communication with said valve mechanism and arranged upon opening of the valve mechanism, to discharge the liquid contained in the container under excess pressure in the form of a spray. The inventive object is characterized in that it comprises a cap enclosing the head and arranged, whan forced downwards, to compress the air in the space enclosed by the cap, and in that the valve mechanism is arranged, upon formation of an excess pressure in said space, to open a passage and allow the excess pressure to propagate down into the container and, upon elimination of all the excess pressure or the major part thereof in thisspace, to agaln close said passage.
Further characteristics of the invention and the advantages to be gained thereby will become apparent - upon reading of the following detailed description of preferred embodiments~
ORIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in the following in more detail with reference to the accompanying drawings, wherein Fig. 1 illustrates in a partial longitudinal section a bottle equipped with the device in accordance with a first embodiment of the invention, Figs. 2 - 4 illustrate a second embodiment of ~48456 the device in accordance with the invention in three different stages of use, Fig. 5 shows in a vertical sectional view a third embodiment of the invention~
Figs. 6 and 7 show on an enlarged scale central parts of the head in accordance with the third embodiment of the invention, and Fig. 8 is a vertical sectional view through the inventive object in accordance with a further develop-ment thereof.
DETAILED DESCRIPTIONS OF PREFERRED EMBODIMENTS
Fig. 1 illustrates a container, in this case a bottle 1 which is partl~ filled with a liquid 2. Into the bottle neck 3 is mounted an inset piece 4 in a position somewhat countersunk inside the bottle neck and provided at its lower portion with a pipe stub 5 to which is connected a pipe 7 extending towards the bottom 6 of the bottle.
A head piece 8is threaded onto the bottle neck 3 so as to sealingly secure the inset piece 4 between the head piece and the bottle. A nozzle 9 is mounted for reciprocating movement at the upper face of the head piece. A pipe section 10 communicates the nozzls 9 with a valve mechanism. In accordance with the embodiment illustrated in Fig. 1 this valve mechanism 1~484S6 comprises a dish-shaped seal 11 which in its neutral or unbiassed position ssalingly abuts against a diaphragm 12. The diaphragm 12 issealingly secured to the head piece 8 and to an annular flange 13 formed on the pipe section 10. A passageway 14 through the pipe section 10 communicates a passageway 15 which extends through the nozzle 9 with an area 16a enclosed by the seal 11 and forming part of valve chamber 16, the remaining area 16b of which communicates with the interior of the bottle 1.
In accordance with the invention the device incor-porates a cap 17 which is arranged to be mounted on the head piece 8 so as to enclose the latter. The cap could be designed in conformity with the conventional protective capsfrequently used to enclose the screw stopper of bottles or the valve mechanism of cans. The cap 17 is arranged, when pressed downwards about the head piece 8, to comprass the air in the space 18 then enclosed bythe cap. Preferably, the head piece 8 is provided with a peripheral annular seal 19 serving to prevent leakage of air between the inner face of the cap 17 and ths exterior of the head piece 8 during the building up an excess pressure in the space 18.
Figs. 2 - 4 show an embodiment which in principle - is not di-stinguished from the embodiment of Fig. 1 but differs therefrom only as regards the design of certain details incorporated in the device. For instance, ths inset piece 4, the head piece 8, the nozzle 9, and the seal 11 differ in designs, and in addition, the whole nozzle is positioned on top of the head piece. Also the cap 17 has been given a different configuration so as to match that of the nozzle 9, as will be described more in detail in the following.
The function of the device will be described in the following with reference to Figs. 2 - 4. Fig. 2 illustrates the position wherein the cap 17 has been pressed somewhat onto the head piecs, whereby an excess pressure is formed in the space 18. Upon further depression of the cap 17, this excess pressure which propagates through the passage-way 15 of the nozzle 9 and the communicating passageway 14 down to the seal 11, will force this seal away from its æalingly abutting position against the diaphragm 12.
As a result, air will flow down into the lower section 16b of the valve chamber 16 and farther through the tube 7 into the interior of the bottle, where an excess pressure builds up. Preferably, the cap 17 is provided at its top with an aperture 2û which the operator, while depressing the cap, closes with one finger. When the cap has reached its lowermost position, the finger is moved away, exposing the aperture 20, whereby the excess pressure in the space 18 disappears. The excess pressure now existing in the bottle interior urges the seal 11 to 1(~484S6 abut against its seat, i.e. the diaphragm 12, and thus maintain the excess pressure inside the bottle (Fig. 3).
When the bottle is to be used as a spray bottle or atomizer bottle, the cap 17 is lifted off. Upon depression of the nozzle 9, the valve 11, 12 opens and liquid flows up through the pipe 7, the valve chamber 16, the communi-cation passageway 14 and is discharged through the nozzie 9, as illustrated in Fig. 4. As soon as the pressure on the nozzle is relieved, the diaphragm 12 springs back and as a result, the engagement be~ween the seal 11 and the diaphragm 12 is quickly restored.
The device as described possesses considerable and important advantages over prior-art techniques. During storage of the bottle 1, there is no need for an excess pressure inside it. When it is to be used, one lifts the cap 17 somewhat and then again depresses it about the head piece 8 to build up an excess pressure insids the bottle, then lifts off the cap from the bottle which is now ready to be used as an atomizer or spray bottle upon mere deprsssion of the no~zle 9. RepeatedshDrt pumping movements during the spraying operation proper thus need not be effected. Instead the spraying operation may be carried out with the same simplicity as with an aerosol can. On account of the simple structure of the valve mechanism thers is hardly any wear on the components.
1~484S6 As a result, the sealing effect is maintained at a sa-tisfactory level over a long time. This means that the bottle may be set aside having a (moderate and harmless) excess pressure and then be again taken out to be used directly as aspray bottle without any risk that the excess pressure will have leaked out in the meantime.
Owing to the provisions in accordance with Figs. 2 - 4 with the nozzle 9 positioned wholly on the exterior of andabove the head piece 8 and with the cap 17 given a shape in conformity therewith, a volume remains about the nozzle after maximum depression of the cap. This ensures that the pressure inside the space 18 cannot rise to a so called over-critical level, which would have besn the case, had it been possible to depress the cap 17 fully into abutment against the upper face of the head piece 8.
Under certain circumstances it may be disadvantageous to bring air into direct contact with the liquid inside the container. This is particularly true when the liquid is of a kind that is negatively eFfected by air.
For the purpose of eliminating this problem the embodiment in accordance with Figs. 5-7 has been devised.
As appears from Fig. 5, the head piece in this case consists of one inner section 21 and one outer section 22.
The inner section 21 through which extends the communicating 1~484Sf~
passageway 14 is provided at its bottom with a wider portion 23 which may be inserted e.g. into a sheet metal can 24 The valve mechanism and the nozzle 9 are provided on the outer section 22, at the top thereof, and the unit thus formed may be threaded onto the inner section 21 Two through-passage channels, each one divided into three sections 25a, 25b and 25c, respectively, extend through the two main sections 21, 22 The communication between the sections 25a and 25b is closed off by diaphragm 12' which is securely clamped between the two main sections 21, 22 screwed together and which in its normal position has its outer mariginal portion 26 abutting sealingly against the outer main section 22. In this position the valve likewise sealingly abuts against the diaphragm 12' with a force of engage-ment somewhat exceeding that of the marginal portion 26 of the diaphragm 12'.
About the wider portion 23 of the main section 21 is arranged in accordance with the teachings of the inven-tion an inflatable liquid-tight bladder 27 which is in-tended to be inserted into the can 24 after the latter has been filled with the liquid 28 which is sensitive to air. When the ou~r main section 22 is screwed onto the inner section, the portion 23 nf the latter will be I~4845~
urged upwards into contact with the mouth portion of the can and the wall of the bladder 27 will be sealingly clamped between the bladder wall and portion 23.
The device in accordance with this embodiment is used in a manner similar to those described with regard to the embodiments above. When the cap 17 is pressed downwards about tha head section 21, 22 (with aparture 2û closad), and tha air is compressed in the chamber lB, the valve 11 will not open but instead the marginal portion 26 of the diaphragm 12' will ba turnad downwards, as indicatad in dash-and-dot lines in Fig 6, allowing air to flow through the passagaway sections 25a, 25b, and 25c down into the bladdar 27, wharain tha air prassura thus incraases. As soon as the air pressure in chamber 18 sinks below tha prassure in the bladder 27, tha marginal portion 26 of tha diaphragm 12' will closa the through-passagas 25a, 25b, 25c.
When the nozzle 9 is daprassed, the valve 11 opens and liquid is expelled from the nozzle in spray form, see Fig. 7.
While the liquid is streaming out, tha bladdar 27 expands (see Fig 5), and at the sama time the prassure therein sinks to a level balow the atmospheric pressure. As a consequance, the bladder will fill out the can 24 gradually at the pace of consumption of the liquid 28. Air and liquid thus nevar gat into contact with one another inside the can 24.
1~484S6 Finally, the invention concerns a further development of the invention as illustrated in Fig. 8. It has been devised to fill the urgent need to apply the structural design of the device in accordance with the invention to liquid containers already existing on the market, primarily to metal cans manufactured on a large scale in the aerosol industry. The embodiment of Fig. 8 is distinguished from the one described previously in that on its inner face the cap 17' is provided with an elongate tube 29 which may be inserted into a channel 31 formed in the liquid container 32 and enclosing the valve head 3û.
In this case, the chamber 18' is formed between the head 30, the tube 29 and the cap 17'. At its free snd, the tube 29 preferably is provided with a flange 34 arranged in sealing engagement with the walls 33 of the channel 31.
When the tube 29 is inserted into the channel 31, enclosing the head 30 (and the aperture 20' formed in the cap 17' is blocked), the air pressure will increase inside the chamber 18' to such an extent that the diaphragm 12', 2û like in the embodiment just described, will open up the communication with the liquid container 32. In this case, air will penetrate straight into the container, just as is the case in the basic embodiment of the invention described initially, and an excess pressure is generated inside the container. The spraying operation takes place in a manner 16~484S6 completely agreeing with that described with relation to ths other embodiments of the invention.
On account of the particular design of the liquid container 32 and the cap 17' is gained the advantage that the container itself may be produced exactly like the spray cans of aerosol type already existing on the market and used in a variety of fields. Consequently, there is no need to develop new machines in order to manufacture cans that are adjusted to the device in accordance with the invention but the detail components incorporated in the device in accordance with the invention may be applied directly on a can of prior-art design.
The invention is not either limited to the embodiments as described and illustrated herein but may be modified in a variety of ways within the scope of the appended claims.
The seal 11 as well as the nozzle 9 may be of a different design. If the fit between the cap 17 and the head piece 8 is good it is possible to dispense with the sealing ring 19 without significant reduction of the pumping effect.
Adjacent the aperture 20 on the inner face of the cap a lip-type seal of known construction may be arranged. Upon depression of the cap 17 on the head piece 8, this seal would serve to close the aperture 20 and upon raising of the cap let in air this way. This would obviate the need of keeping one finger on the aperture during the pumping, 1~48456 as described above.
Alternatively, it is possible to use a completely tight cap 17, as in Fig. 1. In this case, the ssaling I ring 19 should be designed in such a way that upon ¦ 5 depression of the cap 17 (compression) an efficient blockage against air passage is formed between the cap and the head piece but upon removal of the cap air is let through into the gradually expanding chamber 18 for pressure levelling therein.
Tho annular seal 19 may be mounted on the inner face of the cap 17 instead of about the head piece 8.
- . ~ 14 --. _ `. .~
ElACKGROUND OF THE INIIENTION
rhe present invention relates to an arrangement in liquid sprayer containers, such a~s bottles of glas or metal cans, wherein a liquid is contained under excess pressure and which are equipped with a mechanism for discharging the liquid in an atomized form, i.e. in the form of a spray.
The most common liquid containers of this kind are the so called aerosol cans wherein the liquid is kept under pressure with the aid of a propulsion or dispersion gas. Although their function is completely satisfactory these aerosol cans still suffer from several drawbacks.
For instance, since these cans are in fact pressure vessels they constitute a safety risk under certain circumstances.
Furthermore, when the container is being used, as gas, freon, is expelled together with the liquid being discharged, and this gas has proved to have very un-favourable pollutive effects on the atmosphere.
To eliminate these drawbacks a variety of constructions has been devised wherein the excess pressure necessary to atomize the liquid during the discharge thereof from the container is obtained at the very instance of use of the can or bottle. A common feature in these constructions is the provision of a head on the can or bottle which head is equipped with a mechanism 1C)48456 including a valve and a pump. With the aid of this mechanism the liquid is dispersed in an atomized form from the container through a nozzle upon each pumping mDvement The advantage of an arrangement of this kind is the possibility to use an ordinary, conventional bottle which thus need not be a pressure vessel. However, with none of the prior-art constructions of this kind has it hitherto been possible to achieve that the liquid being discharged remains in a satisfactorily atomized form during the entire pumping movement.
The moment of dispersion during each pumping mov~ment furthermore is so short that as a rule it is rather complicated to carry out a continuous working operation when several successive pumping movements are required.
In several prior-art devices the problem is badly solved constructively, with the result that the pump mechanisms may stick and the valves leak.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a novel structure designed to eliminate the risks and drawbacks inherent in prior-art constructions. The arrangement in accordance with the invention generally refers to the kind of liquid containers, such as bottles, which are equipped with a head provided with a manually 11)48456 operabla valvs mechanism and a nozzle in communication with said valve mechanism and arranged upon opening of the valve mechanism, to discharge the liquid contained in the container under excess pressure in the form of a spray. The inventive object is characterized in that it comprises a cap enclosing the head and arranged, whan forced downwards, to compress the air in the space enclosed by the cap, and in that the valve mechanism is arranged, upon formation of an excess pressure in said space, to open a passage and allow the excess pressure to propagate down into the container and, upon elimination of all the excess pressure or the major part thereof in thisspace, to agaln close said passage.
Further characteristics of the invention and the advantages to be gained thereby will become apparent - upon reading of the following detailed description of preferred embodiments~
ORIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in the following in more detail with reference to the accompanying drawings, wherein Fig. 1 illustrates in a partial longitudinal section a bottle equipped with the device in accordance with a first embodiment of the invention, Figs. 2 - 4 illustrate a second embodiment of ~48456 the device in accordance with the invention in three different stages of use, Fig. 5 shows in a vertical sectional view a third embodiment of the invention~
Figs. 6 and 7 show on an enlarged scale central parts of the head in accordance with the third embodiment of the invention, and Fig. 8 is a vertical sectional view through the inventive object in accordance with a further develop-ment thereof.
DETAILED DESCRIPTIONS OF PREFERRED EMBODIMENTS
Fig. 1 illustrates a container, in this case a bottle 1 which is partl~ filled with a liquid 2. Into the bottle neck 3 is mounted an inset piece 4 in a position somewhat countersunk inside the bottle neck and provided at its lower portion with a pipe stub 5 to which is connected a pipe 7 extending towards the bottom 6 of the bottle.
A head piece 8is threaded onto the bottle neck 3 so as to sealingly secure the inset piece 4 between the head piece and the bottle. A nozzle 9 is mounted for reciprocating movement at the upper face of the head piece. A pipe section 10 communicates the nozzls 9 with a valve mechanism. In accordance with the embodiment illustrated in Fig. 1 this valve mechanism 1~484S6 comprises a dish-shaped seal 11 which in its neutral or unbiassed position ssalingly abuts against a diaphragm 12. The diaphragm 12 issealingly secured to the head piece 8 and to an annular flange 13 formed on the pipe section 10. A passageway 14 through the pipe section 10 communicates a passageway 15 which extends through the nozzle 9 with an area 16a enclosed by the seal 11 and forming part of valve chamber 16, the remaining area 16b of which communicates with the interior of the bottle 1.
In accordance with the invention the device incor-porates a cap 17 which is arranged to be mounted on the head piece 8 so as to enclose the latter. The cap could be designed in conformity with the conventional protective capsfrequently used to enclose the screw stopper of bottles or the valve mechanism of cans. The cap 17 is arranged, when pressed downwards about the head piece 8, to comprass the air in the space 18 then enclosed bythe cap. Preferably, the head piece 8 is provided with a peripheral annular seal 19 serving to prevent leakage of air between the inner face of the cap 17 and ths exterior of the head piece 8 during the building up an excess pressure in the space 18.
Figs. 2 - 4 show an embodiment which in principle - is not di-stinguished from the embodiment of Fig. 1 but differs therefrom only as regards the design of certain details incorporated in the device. For instance, ths inset piece 4, the head piece 8, the nozzle 9, and the seal 11 differ in designs, and in addition, the whole nozzle is positioned on top of the head piece. Also the cap 17 has been given a different configuration so as to match that of the nozzle 9, as will be described more in detail in the following.
The function of the device will be described in the following with reference to Figs. 2 - 4. Fig. 2 illustrates the position wherein the cap 17 has been pressed somewhat onto the head piecs, whereby an excess pressure is formed in the space 18. Upon further depression of the cap 17, this excess pressure which propagates through the passage-way 15 of the nozzle 9 and the communicating passageway 14 down to the seal 11, will force this seal away from its æalingly abutting position against the diaphragm 12.
As a result, air will flow down into the lower section 16b of the valve chamber 16 and farther through the tube 7 into the interior of the bottle, where an excess pressure builds up. Preferably, the cap 17 is provided at its top with an aperture 2û which the operator, while depressing the cap, closes with one finger. When the cap has reached its lowermost position, the finger is moved away, exposing the aperture 20, whereby the excess pressure in the space 18 disappears. The excess pressure now existing in the bottle interior urges the seal 11 to 1(~484S6 abut against its seat, i.e. the diaphragm 12, and thus maintain the excess pressure inside the bottle (Fig. 3).
When the bottle is to be used as a spray bottle or atomizer bottle, the cap 17 is lifted off. Upon depression of the nozzle 9, the valve 11, 12 opens and liquid flows up through the pipe 7, the valve chamber 16, the communi-cation passageway 14 and is discharged through the nozzie 9, as illustrated in Fig. 4. As soon as the pressure on the nozzle is relieved, the diaphragm 12 springs back and as a result, the engagement be~ween the seal 11 and the diaphragm 12 is quickly restored.
The device as described possesses considerable and important advantages over prior-art techniques. During storage of the bottle 1, there is no need for an excess pressure inside it. When it is to be used, one lifts the cap 17 somewhat and then again depresses it about the head piece 8 to build up an excess pressure insids the bottle, then lifts off the cap from the bottle which is now ready to be used as an atomizer or spray bottle upon mere deprsssion of the no~zle 9. RepeatedshDrt pumping movements during the spraying operation proper thus need not be effected. Instead the spraying operation may be carried out with the same simplicity as with an aerosol can. On account of the simple structure of the valve mechanism thers is hardly any wear on the components.
1~484S6 As a result, the sealing effect is maintained at a sa-tisfactory level over a long time. This means that the bottle may be set aside having a (moderate and harmless) excess pressure and then be again taken out to be used directly as aspray bottle without any risk that the excess pressure will have leaked out in the meantime.
Owing to the provisions in accordance with Figs. 2 - 4 with the nozzle 9 positioned wholly on the exterior of andabove the head piece 8 and with the cap 17 given a shape in conformity therewith, a volume remains about the nozzle after maximum depression of the cap. This ensures that the pressure inside the space 18 cannot rise to a so called over-critical level, which would have besn the case, had it been possible to depress the cap 17 fully into abutment against the upper face of the head piece 8.
Under certain circumstances it may be disadvantageous to bring air into direct contact with the liquid inside the container. This is particularly true when the liquid is of a kind that is negatively eFfected by air.
For the purpose of eliminating this problem the embodiment in accordance with Figs. 5-7 has been devised.
As appears from Fig. 5, the head piece in this case consists of one inner section 21 and one outer section 22.
The inner section 21 through which extends the communicating 1~484Sf~
passageway 14 is provided at its bottom with a wider portion 23 which may be inserted e.g. into a sheet metal can 24 The valve mechanism and the nozzle 9 are provided on the outer section 22, at the top thereof, and the unit thus formed may be threaded onto the inner section 21 Two through-passage channels, each one divided into three sections 25a, 25b and 25c, respectively, extend through the two main sections 21, 22 The communication between the sections 25a and 25b is closed off by diaphragm 12' which is securely clamped between the two main sections 21, 22 screwed together and which in its normal position has its outer mariginal portion 26 abutting sealingly against the outer main section 22. In this position the valve likewise sealingly abuts against the diaphragm 12' with a force of engage-ment somewhat exceeding that of the marginal portion 26 of the diaphragm 12'.
About the wider portion 23 of the main section 21 is arranged in accordance with the teachings of the inven-tion an inflatable liquid-tight bladder 27 which is in-tended to be inserted into the can 24 after the latter has been filled with the liquid 28 which is sensitive to air. When the ou~r main section 22 is screwed onto the inner section, the portion 23 nf the latter will be I~4845~
urged upwards into contact with the mouth portion of the can and the wall of the bladder 27 will be sealingly clamped between the bladder wall and portion 23.
The device in accordance with this embodiment is used in a manner similar to those described with regard to the embodiments above. When the cap 17 is pressed downwards about tha head section 21, 22 (with aparture 2û closad), and tha air is compressed in the chamber lB, the valve 11 will not open but instead the marginal portion 26 of the diaphragm 12' will ba turnad downwards, as indicatad in dash-and-dot lines in Fig 6, allowing air to flow through the passagaway sections 25a, 25b, and 25c down into the bladdar 27, wharain tha air prassura thus incraases. As soon as the air pressure in chamber 18 sinks below tha prassure in the bladder 27, tha marginal portion 26 of tha diaphragm 12' will closa the through-passagas 25a, 25b, 25c.
When the nozzle 9 is daprassed, the valve 11 opens and liquid is expelled from the nozzle in spray form, see Fig. 7.
While the liquid is streaming out, tha bladdar 27 expands (see Fig 5), and at the sama time the prassure therein sinks to a level balow the atmospheric pressure. As a consequance, the bladder will fill out the can 24 gradually at the pace of consumption of the liquid 28. Air and liquid thus nevar gat into contact with one another inside the can 24.
1~484S6 Finally, the invention concerns a further development of the invention as illustrated in Fig. 8. It has been devised to fill the urgent need to apply the structural design of the device in accordance with the invention to liquid containers already existing on the market, primarily to metal cans manufactured on a large scale in the aerosol industry. The embodiment of Fig. 8 is distinguished from the one described previously in that on its inner face the cap 17' is provided with an elongate tube 29 which may be inserted into a channel 31 formed in the liquid container 32 and enclosing the valve head 3û.
In this case, the chamber 18' is formed between the head 30, the tube 29 and the cap 17'. At its free snd, the tube 29 preferably is provided with a flange 34 arranged in sealing engagement with the walls 33 of the channel 31.
When the tube 29 is inserted into the channel 31, enclosing the head 30 (and the aperture 20' formed in the cap 17' is blocked), the air pressure will increase inside the chamber 18' to such an extent that the diaphragm 12', 2û like in the embodiment just described, will open up the communication with the liquid container 32. In this case, air will penetrate straight into the container, just as is the case in the basic embodiment of the invention described initially, and an excess pressure is generated inside the container. The spraying operation takes place in a manner 16~484S6 completely agreeing with that described with relation to ths other embodiments of the invention.
On account of the particular design of the liquid container 32 and the cap 17' is gained the advantage that the container itself may be produced exactly like the spray cans of aerosol type already existing on the market and used in a variety of fields. Consequently, there is no need to develop new machines in order to manufacture cans that are adjusted to the device in accordance with the invention but the detail components incorporated in the device in accordance with the invention may be applied directly on a can of prior-art design.
The invention is not either limited to the embodiments as described and illustrated herein but may be modified in a variety of ways within the scope of the appended claims.
The seal 11 as well as the nozzle 9 may be of a different design. If the fit between the cap 17 and the head piece 8 is good it is possible to dispense with the sealing ring 19 without significant reduction of the pumping effect.
Adjacent the aperture 20 on the inner face of the cap a lip-type seal of known construction may be arranged. Upon depression of the cap 17 on the head piece 8, this seal would serve to close the aperture 20 and upon raising of the cap let in air this way. This would obviate the need of keeping one finger on the aperture during the pumping, 1~48456 as described above.
Alternatively, it is possible to use a completely tight cap 17, as in Fig. 1. In this case, the ssaling I ring 19 should be designed in such a way that upon ¦ 5 depression of the cap 17 (compression) an efficient blockage against air passage is formed between the cap and the head piece but upon removal of the cap air is let through into the gradually expanding chamber 18 for pressure levelling therein.
Tho annular seal 19 may be mounted on the inner face of the cap 17 instead of about the head piece 8.
- . ~ 14 --. _ `. .~
Claims (14)
1. An improved spray arrangement in liquid containers, such as bottles, comprising a head piece, a manually operable valve mechanism on said head piece, and a nozzle with a passage therein in communication with said valve mechanism and arranged, upon opening of said valve mechanism, to discharge said liquid contained in said container under excess pressure in the form of a spray, the improvement comprising a cap mounted so as to enclose said head piece, said cap arranged, when forced downwards about said head, to compress the air in the space enclosed by said cap, said valve mechanism arranged, upon formation of an excess pressure in said space, to open a passage through said head and allow said excess pressure to propagate down into said container and, upon elimination in this space of all said excess pressure or the major portion thereof, to again close said passage.
2. An improved spray arrangement as claimed in claim 1, comprising an annular seal positioned about said head piece to block off said space enclosed by said cap from communication with the outside air upon depression of said cap about said head piece.
3. An improved spray arrangement as claimed in claim 2, comprising said annular seal positioned on the internal face of said cap.
4. An improved spray arrangement as claimed in claim 1, wherein said valve mechanism comprises a seal securely connected to said nozzle and arranged to close said passage extending through said head thus establishing communication between said passage through said nozzle and the interior of said container, and to open said communication passage both upon displacement of said nozzle away from the unbiassed position thereof for discharge of liquid, and also upon formation of an excess pressure in said space enclosed by said cap.
5. An improved spray arrangement as claimed in claim 4, comprising a diaphragm sealingly secured to said head piece, said nozzle supported in sealing engagement against said diaphragm, said nozzle passage extending through said diaphragm.
6, An improved spray arrangement as claimed in claim 4, comprising a diaphragm sealingly secured to said head piece, said nozzle supported in sealing engagement against said diaphragm, said communication passage extending through said diaphragm.
7. An improved spray arrangement as claimed in claim 5, wherein said diaphragm serves as a spring means arranged, upon release of the nozzle following displacement of the latter from the unbiassed position thereof, to return said nozzle to said unbiassed position and to close said valve mechanism.
8. An improved spray arrangement as claimed in claim 7, wherein said diaphragm forms the seat of engagement of said seal of said valve mechanism.
9. An improved spray arrangement as claimed in claim 6, wherein said diaphragm serves as a spring means arranged, upon release of the nozzle following displacement of the latter from the unbiassed position thereof, to return said nozzle to said unbiassed position and to close said valve mechanism.
10. An improved spray arrangement as claimed in claim 9, wherein said diaphragm forms the seat of engagement of said seal of said valve mechanism.
11. An improved spray arrangement as claimed in claim 1, comprising air passage means extending exteriorly of said valve mechanism, and an inflatable, liquid--tight bladder arranged in said liquid container and closed off from the liquid therein, said air passage means communicating the space enclosed by said cap and said bladder, a valve positioned in said air passage means and arranged, upon the occurrence of an excess pressure in said space in relation to said bladder, to open said air passage means and, upon occurrence of an excess pressure inside said bladder in relation to said space, to close said air passage means.
12. An improved spray arrangement as claimed in claim 11, wherein said valve means is a section of said diaphragm.
13. An improved spray arrangement as claimed in claim 1, comprising an elongate tube formed on the inner face of said cap, a channel formed in said liquid container so as to enclose said head piece, said tube arranged, when inserted into said container to force air trapped in said tube down into said liquid container via said valve mechanism.
14. An improved spray arrangement as claimed in claim 13, comprising a flange formed at the free end of said tube so as to form a seal against the walls of said channel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7605446A SE398980B (en) | 1976-05-13 | 1976-05-13 | AIR PUMP COMBINED WITH VALVE DEVICE FOR SPRAY BOTTLES |
| SE7608916A SE424962B (en) | 1976-08-10 | 1976-08-10 | PUMP TO SPRAY BOTTLE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048456A true CA1048456A (en) | 1979-02-13 |
Family
ID=26656717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA77278317A Expired CA1048456A (en) | 1976-05-13 | 1977-05-13 | Arrangement in liquid sprayer containers |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS52138711A (en) |
| AR (1) | AR211639A1 (en) |
| AT (1) | AT355980B (en) |
| AU (1) | AU505855B2 (en) |
| BE (1) | BE854528A (en) |
| BR (1) | BR7703117A (en) |
| CA (1) | CA1048456A (en) |
| CH (1) | CH615642A5 (en) |
| DE (1) | DE2721128C2 (en) |
| DK (1) | DK146556C (en) |
| ES (1) | ES228522Y (en) |
| FI (1) | FI60143C (en) |
| FR (1) | FR2351336A1 (en) |
| GB (1) | GB1582556A (en) |
| IT (1) | IT1071326B (en) |
| MX (1) | MX144585A (en) |
| NL (1) | NL179348C (en) |
| NO (1) | NO145611C (en) |
| SU (1) | SU733512A3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3241054A1 (en) * | 1982-11-06 | 1984-05-10 | Verpackungs-Industrie Kutenholz GmbH, 2741 Kutenholz | Device for the metered dispensing of liquids from compressible containers |
| GB9107681D0 (en) * | 1991-04-11 | 1991-05-29 | Unilever Plc | Container |
| NL9300517A (en) * | 1993-03-23 | 1994-10-17 | Airspray Int Bv | Foam forming assembly, a suitable spray head and a spray can comprising such an assembly. |
| AU7458494A (en) * | 1993-07-23 | 1995-02-20 | Unilever Plc | Aerosol dispensing device |
| WO1995019304A1 (en) * | 1994-01-15 | 1995-07-20 | Douglas Christopher Barker | Dispenser |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127070A (en) * | 1964-03-31 | Spray gun with a discharge controller | ||
| DE504765C (en) * | 1931-03-31 | Emil Schanze | Dispensing device with compressed air pump | |
| US1795510A (en) * | 1927-02-04 | 1931-03-10 | Schanze Emil | Tapping device for closed vessels |
| US2031172A (en) * | 1931-10-28 | 1936-02-18 | George J Maloney | Beverage dispensing bottle |
| US2154393A (en) * | 1935-07-03 | 1939-04-11 | Continental Say When Corp | Dispensing apparatus for beverages |
| US2060512A (en) * | 1935-12-16 | 1936-11-10 | Herbert L Magill | Liquid dispensing device |
| US2588987A (en) * | 1947-08-21 | 1952-03-11 | John A Roberts | Pipe joint |
| US2890817A (en) * | 1956-09-06 | 1959-06-16 | Karl Kiefer Machine Company | Valve means for pressurized container |
| US2962196A (en) * | 1957-05-28 | 1960-11-29 | Oil Equipment Lab Inc | Pressurized package |
| DE1475174A1 (en) * | 1965-09-20 | 1969-01-16 | Afa Corp | Liquid spray device |
| US3520452A (en) * | 1968-11-29 | 1970-07-14 | Afa Corp | Leakproof container seal |
| US3606088A (en) * | 1968-12-02 | 1971-09-20 | Beleggingsmaatschappij Ind Nv | Membrane valve for spray containers |
| US3733010A (en) * | 1971-04-30 | 1973-05-15 | Ciba Geigy Corp | Air pressure operated dispenser |
| DE2162762B1 (en) * | 1971-12-17 | 1973-01-25 | Deutsche Praezisions-Ventil Gmbh, 6234 Hattersheim | Valve for pressurized gas packs |
| AT312497B (en) * | 1972-02-11 | 1974-01-10 | Ipc Presspack Company Rindelau | Can for receiving and dispensing flowable masses under pressure |
| JPS493205A (en) * | 1972-04-24 | 1974-01-12 | ||
| NL7211601A (en) * | 1972-08-25 | 1974-02-27 | ||
| US3955720A (en) * | 1972-11-15 | 1976-05-11 | Malone David C | Low pressure dispensing apparatus with air pump |
| JPS511843A (en) * | 1974-06-21 | 1976-01-09 | Nissan Motor | Nainenkikanno tenkashinkakuseigyosochi |
| US3940030A (en) * | 1974-08-16 | 1976-02-24 | Hirosi Kondo | Dispenser device for taking out contents |
-
1977
- 1977-05-03 GB GB18581/77A patent/GB1582556A/en not_active Expired
- 1977-05-03 CH CH554277A patent/CH615642A5/en not_active IP Right Cessation
- 1977-05-04 FI FI771417A patent/FI60143C/en not_active IP Right Cessation
- 1977-05-05 AT AT318677A patent/AT355980B/en not_active IP Right Cessation
- 1977-05-05 AU AU24896/77A patent/AU505855B2/en not_active Expired
- 1977-05-10 DK DK203777A patent/DK146556C/en not_active IP Right Cessation
- 1977-05-11 BE BE6046005A patent/BE854528A/en not_active IP Right Cessation
- 1977-05-11 FR FR7714422A patent/FR2351336A1/en active Granted
- 1977-05-11 DE DE2721128A patent/DE2721128C2/en not_active Expired
- 1977-05-12 NO NO771679A patent/NO145611C/en unknown
- 1977-05-12 NL NLAANVRAGE7705241,A patent/NL179348C/en not_active IP Right Cessation
- 1977-05-12 JP JP5377877A patent/JPS52138711A/en active Granted
- 1977-05-12 MX MX169110A patent/MX144585A/en unknown
- 1977-05-13 IT IT23544/77A patent/IT1071326B/en active
- 1977-05-13 AR AR267624A patent/AR211639A1/en active
- 1977-05-13 SU SU772482002A patent/SU733512A3/en active
- 1977-05-13 CA CA77278317A patent/CA1048456A/en not_active Expired
- 1977-05-13 BR BR3117/77A patent/BR7703117A/en unknown
- 1977-05-13 ES ES1977228522U patent/ES228522Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI771417A (en) | 1977-11-14 |
| FI60143C (en) | 1981-12-10 |
| FI60143B (en) | 1981-08-31 |
| DK203777A (en) | 1977-11-14 |
| NO145611C (en) | 1982-04-28 |
| DK146556C (en) | 1984-05-14 |
| GB1582556A (en) | 1981-01-14 |
| DK146556B (en) | 1983-11-07 |
| FR2351336A1 (en) | 1977-12-09 |
| AR211639A1 (en) | 1978-02-15 |
| DE2721128A1 (en) | 1977-11-24 |
| ES228522Y (en) | 1977-12-01 |
| NL179348C (en) | 1986-09-01 |
| CH615642A5 (en) | 1980-02-15 |
| ATA318677A (en) | 1979-08-15 |
| FR2351336B1 (en) | 1980-06-20 |
| ES228522U (en) | 1977-07-01 |
| JPS52138711A (en) | 1977-11-19 |
| IT1071326B (en) | 1985-04-02 |
| BR7703117A (en) | 1978-01-31 |
| AU2489677A (en) | 1978-11-09 |
| MX144585A (en) | 1981-10-28 |
| DE2721128C2 (en) | 1985-07-11 |
| AU505855B2 (en) | 1979-12-06 |
| NO145611B (en) | 1982-01-18 |
| SU733512A3 (en) | 1980-05-05 |
| BE854528A (en) | 1977-09-01 |
| JPS5441729B2 (en) | 1979-12-10 |
| NL7705241A (en) | 1977-11-15 |
| NO771679L (en) | 1977-11-15 |
| AT355980B (en) | 1980-04-10 |
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