CA1291731C - Aerosol power system - Google Patents
Aerosol power systemInfo
- Publication number
- CA1291731C CA1291731C CA000576108A CA576108A CA1291731C CA 1291731 C CA1291731 C CA 1291731C CA 000576108 A CA000576108 A CA 000576108A CA 576108 A CA576108 A CA 576108A CA 1291731 C CA1291731 C CA 1291731C
- Authority
- CA
- Canada
- Prior art keywords
- resilient
- tube
- aerosol
- nozzle
- generate
- 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
- 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
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
- B65D83/0061—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
AEROSOL POWER SYSTEM
ABSTRACT OF THE INVENTION
This invention is directed to a novel bladder-type aerosol power system which can be used in a stand-ard aerosol spray container. More particularly, this invention pertains to an aerosol powering system which utilizes a rubber-type bladder to generate the expulsion power for the aerosol. This system circumvents the need to use volatile propellants which have been demonstrated to be harmful to the protective ozone layer of the earth. A power system for an aerosol spray generating nozzle comprising a) nozzle means adapted to generate an aerosol vapour spray; and b) a hollow resilient means connected to the nozzle means, the resilient means being adapted to contain the liquid used to generate the aero-sol spray, and generate a pressure on the liquid when filled with the liquid.
ABSTRACT OF THE INVENTION
This invention is directed to a novel bladder-type aerosol power system which can be used in a stand-ard aerosol spray container. More particularly, this invention pertains to an aerosol powering system which utilizes a rubber-type bladder to generate the expulsion power for the aerosol. This system circumvents the need to use volatile propellants which have been demonstrated to be harmful to the protective ozone layer of the earth. A power system for an aerosol spray generating nozzle comprising a) nozzle means adapted to generate an aerosol vapour spray; and b) a hollow resilient means connected to the nozzle means, the resilient means being adapted to contain the liquid used to generate the aero-sol spray, and generate a pressure on the liquid when filled with the liquid.
Description
~29~73~
AEROSOL POWER SYSTEM
FIELD OF THE INVENTION
This invention is directed to a novel bladder-type aerosol power system which can be used in a stand-ard aerosol spray container. More particularly, this invention pertains to an aerosol powering system which utilizes a rubber-type bladder to generate the expulsion power for the aerosol. This system circumvents the need to use volatile propellants which have been demonstrated to be harmful to the protective ozone layer of the earth.
BACKGROUND OF THE INVENTION
In recent years, there has been alarming evi-dence that the protective ozone layer of the earth is shrinking in thickness. The ozone layer is critical to the health of living organisms inhabiting the earth because the ozone layer filters out deadly ultra-violent rays, and other rays, emitted by the sun. Considerable evidence has been gathered to demonstrate that the damage that is occurring to the ozone layer is caused by a number of mankind generated free radicals and Freeon-type propellents which have been used in aerosol con-tainer spray systems for many years. These propellents are lighter than the atmosphere and rise to the eleva-tion of the ozone layer. Chemical reactions then takeplace between the radicals and the ozone in the ozone layer thereby forming other compounds and complexes and diminishing the free ozone in the ozone layer. There has even been recent evidence to indicate that deadly holes have appeared in certain portions of the ozone ~91731 layer, for example, over Antarctica. If this trend con-tinues, then the health of mankind will be jeopardized.
Recently, industrialized nations of the world 5 have agreed to an international molatorium on the use of substances which have been demonstrated to have a destructive effect on the ozone layer of the earth. In 1987, the United Stated enacted some sunset-type legis-lation which will force companies who are manufacturing substances which are demonstrated to have a destructive effect on the ozone layer, to phase out production of such harmful substances over a specified number of years. One of the most ozone layer destructive family of substances being manufactured are fluorocarbons (Freons), which are widely used as coolants in refriger-ation systems, and as propellents in aerosol spray con-tainers holding products such as hair spray, cleaning compounds, and the like.
Because of the mounting evidence that fluorocar-bon propellents, and similar type propellents, in aero-sol contained spray system, have accumulative damaging effect on the ozone layer, it is critical to the long term health of living beings on the ear~h to develop alternative aerosol generating containers which do not rely upon ozone destroying propellents. As an alterna-tive, many aerosol-type consumer products recently introduced on the market use a pump type aerosol spray generating system, rather than the volatile propellent contained in an aerosol container. However, such manually operated aerosol pump systems are not entirely satisfactory because they are incapable of generating a fine consistent spray similar to the type that is gener-ated by an aerosol container employing a fluorocarbon propellent.
~;291731 A number of patents have been granted in recent years for aerosol generating pump systems, and the like.
These are useful as alternatives to volatile propellent aerosol generating systems. U.S. Patent No. 3,993,069, for example, illustrates a pumping system which utilizes a natural rubber bladder which is inflated and thereby generates pumping action from the force created by the bladder in seeking to return to its original size and shape.
SUMMARY OF THE INVENTION
I have invented an aerosol spray generating system which utilizes a special rubber tube to generate the power required to create the aerosol spray, when the liquid contents in the aerosol can are forced into a spray nozzle.
A power system for an aerosol spray generatlng nozzle comprising: (a) nozzle means adapted to generate an aerosol vapour spray; and (b) a hollow resilient means connected to the nozzle means, the resilient means being adapted to contain the liquid used to generate the aerosol spray, and generate a pressure on the liquid when filled with the liquid.
In the apparatus as defined, the resilient means may have a liner which separates the resilient means from the liquid. The resilient means may be formed of natural rubber. In the apparatus, the liner is separate from the resilient means. The liner may be formed of a material selected from the group of materials consisting of food grade silicone rubber, natural latex, and Neoprene.
~.~917~1 In the apparatus as defined, the resilient means can be capable of expanding at least about 600%. The liner can be capable of expanding at least about 800%.
The resilient means can be constructed in the form of a elongated tube which is closed at one end, is open at the other end, and has a collar around the open end.
In the apparatus as defined, the liner tube can be adapted to fit into the interior of the resilient tube means. The apparatus can include a connector means which connects the collars of the liner tube and the resilient tube means with the nozzle means.
In the apparatus as defined, the resilient tube means and the liner tube can be housed in a container, and the nozzle means can be located at the top of the container and attached to the container and the pair of tubes.
DRAWINGS
In the drawings, which represent specific embodiments of the invention, but which should not be regarded as restricting the spirit or scope of the invention in any way:
Figure 1 illustrates a side elevation partial section view of a liner-power tube combination in inflated condition inside an aerosol can;
Figure 2 illustrates a side elevation view of a liner tube;
Figure 3 illustrates a side elevation view of a power tube;
~9~731 Figure 4 illustrates a side elevation view of a liner tube inserted into a power tube;
Figure 5 illustrates a side elevation partial section view of a liner-power tube-aerosol valve arrangement;
Figure 6 illustrates a graph of pressure against air volume behaviour for an inflated and re-inflated power tube.
DETAILED DESCRIPTION OF SPECIFIC
EMBODIMENTS OF THE INVENTION
Referring to the drawings, Figure l illustrates a side elevation partial section view of the components that make up the bladder powered aerosol can 2. As seen in Figure 1, a conventional aerosol can 2 has at the top thereo~ a stamped metal can top 4. Inserted into the interior of the can 2 through can top ~, is a rubber power tube 10, which embraces an inner liner tube 8. A
conventional aerosol spray nozzle-cap 6 is positioned above the liner tube 8 and the power tube 10. A connec-tor 16 and a collar 14 combination is used to enabie the various components to be assembled together.
Figure l illustrates a side partial-section view of the manner in which the liner tube 8 and the power tube 10 inflate within the interior of aerosol can 2, when the liner tube 8 is pumped fall of an appropriate consumer product. AS seen in Figure 1, which can be interpreted somewhat as a stylized representation in order to illustrate the function of the invention, the outside of liner tube 8 remains juxtapositioned against the inside of power tube 10. When the spray top 6 is q;~.731 manually activated, the energy stored in the expanded power tube lO forces a small portion of the contents of liner tube 8 out to the nozzle of the spray top 6. The size of the power tube lO and the liner tube 8 gradually decrease as the contents of the liner tubes are gradu-ally expelled through repeated activations of nozzle 6.
Figure 2 illustrates a side elevation view of the liner tube 8. This liner tube 8 may be constructed of a number of suitable liquid impermeable resilient materials, depending upon the nature of the contents that are to be packaged in the interior of the liner tube 8. The liner tube 8 has a flange 9 around the top thereof. If food items are to be contained in the liner tube, then a food grade quality silicone can be used for constructing the liner tube 8. For non-food contents, the liner tube can be manufactured of natural latex, or a synthetic rubber such as Neoprene, manufactured by Thiokol.
Figure 3 illustrates a side elevation view of the power tube lO, with top flange 11. The power tube 10 is critical to the successful operation and perform-ance of the aerosol generating power system. The power tube 10 is preferably constructed of a natural formu-lated rubber obtained from Malaysia. The natural rubber from which the power tube lO is formed, should be capa-ble of expanding at least 600%. Proportionately, the liner 8 should be constructed of a resilient material which can expand in the order of 800 to 1,000%. This is necessary in order to permit the liner tube 8 to remain abutted against the interior of the power tube 10 when inflation or deflation occurs. In other words, the liner tube 8 must be able to expand proportionately greater than the power tube 10, in order that the two ~917~1 items can remain closely juxtapositioned when the power tube 10 and the liner tube 8 are inflated with the contents that are to be held in the aerosol container.
Figure 4 illustrates side elevation view the manner in which the liner tube 8 is positioned in the interior of the power tube 10. The orientation illus-trated in Figure 4 is in the "at-rest" position.
Figure 5 illustrates in side elevation partial-section view a valve connecting arrangement that can be utilized for the liner tube 8-power tube 10 combination.
The liner tube 8 and power tube 10 are held in place by a collar 14. This collar 14 can be molded of a suitable polymer material. The liner 8-power tube 10-collar 14 combination are fitted into a connector 16, which is secured to the underside of the can top 4 of the aerosol container. Connector 16 has a fill-hole formed therein, which can be utilized for top-filling the liner 8 with the product that i8 to be packaged in the aerosol con-tainer. A one way valve is secured to the bottom part of the fill-hole 18 in order to prevent the contents of the aerosol container from exiting through the fill-hole 18 once the aerosol container has been filled.
Figure 6 illustrates a graphical depiction of the relationship between pressure and air volume as the bladder-like means (power tube 10) is inflated with air.
The solid line depicts the pressure behaviour of the tube 10 upon first inflation up to 100 millimeters of air. The dotted line depicts the pressure behaviour of the tube 10 upon reinflation up to 100 millimeters of air after the power tube 10 has been deflated following the first inflation. As can be seen in Figure 6, the pressure rises in a linear manner until a threshold ~9~7~
"set" peak is reached. At that point, the pressure drops to a certain extent while the power tube is being inflated with additional air. Once the threshold peak has been passed, and a consistent pressure has been reached, a generally horizontal relationship between air volume and pressure is realized, up to the full infla-tion volume of 100 millimeters of air. Interestinyly, upon re-inflation, the same relationship is noted except that the pressure-air volume gradient follows a lower path.
An important advantage of an aerosol powering system according to the invention is that it can be used in any position. It is not necessary to hold the aerosol can upright. Moreover, it operates efficiently at pressures lower than those typically used for propel-lent powered aerosol container system. Thus, with an aerosol power system according to the inventionl it is not necessary to mark the containers as explosive or inflammable. Another important advantage of the aerosol power system of the invention is that no solvent dilu-tion of the consumer product that is contained in the inner liner takes place because there is no propellant or solvent.
Example 1 Prototypes of the invention have been construct-ed utilizing a natural rubber obtained and formulated in Malaysia, and a liner tube 8 formed of natural latex.
Normally, aerosol containers are pressurized to about 60 psi in order to obtain the desired aerosol spray effect.
This high pressure can be somewhat dangerous, particu-larly if the aerosol can is heated, eg. thrown into a fire. In distinction, the prototype, it has been dis-~;~9~73~
covered need only pressurize the contents of the innerliner 8, and power tube 10 to about 22 psi. Moreover, it has been found that the pressure-size gradient for the power tube, as it is inflated and then deflated, once it passes a threshold peak, is nearly horizontal.
There is a rise in pressure as the power tube 10 is initially inflated or returns to its original uninflated condition. The virtually horizontal pressure gradient, throughout most of the inflation-deflation cycle of the power tube 10 is advantageous because it provides con-sistent pressure and enables a consistent fine aerosol spray to be obtained from the time the liner 8 and power tube 10 are fully inflated with the consumer product and then subsequently deflated in stages, by actuating the aerosol cap 6, until the point is reached where the con-tents of the liner tube 8 are almost fully evacuated.
Example 2 For~demonstration purposes, and to evaluate the viability of the power system of the invention, a liner tube-power tube combination was repeatedly inflated with 100 millimeters of air. (See Figure 6 for an example.) Various combinations of new power tube and new liner tubes, together with used power tubes and used liner tubes were used. The objective of these tests was to determine and record the different elongation and per-formance properties which the various brands of latex rubber that were used to produce the power tubes and the liner tubes. It was observed that after the third or fourth inflation, there was essentially no significant change in the pressure-volume relationship from further repeated inflations and deflations. TO provide consis-tency in the test results, all inflations were maintain-ed for thirty minutes with fifteen minute intervals V
between inflations. The results of these tests are summarizedin Table 1 below. The heading "Laminated" means power tube and liner tube in combination. "Set" means the threshold state of the power tube before expanding under increased pressure. Table 1 demonstrates how an elastic latex rubber outer tube and an elastic latex rubber inner tube cooperate together to increase total delivery pressure by the sum of the pressure in the outer tube and the pressure in the inner tube.
~'~917~
PRESSURE REQUIRED (DELIVERY) TO OVERCOME "SET" "STATIC" PRESSURE CAPACITY
Tubinq #l Standard outer First Inflation (Dark Orange Inner Liner) Outer Tube #1 37 psi 26 psi Inner Tube #1 20 psi 10 psi 100 ml Laminated #1 57 psi 36 psi Tubinq #l Second Inflation Outer Tube lA 35 psi 25 psi Inner Tube lA 18 psi 9 psi 100 ml Laminated lA 53 psi 34 psi Tubinq #2 Standard Outer First Inflation (Light Orange Inner Liner) Outer Tube #2 37 psi 26 psi Inner Tube #2 23 psi 12 psi 100 ml Laminated #2 60 psi 38 psi Tubinq #2 Second Inflation Outer Tube 2A 35 psi 24 psi Inner Tube 2A 21 psi 11 psi 100 ml Laminated 2A 56 psi 35 psi Tubinq #3 Standard Outer First Inflation (Red Inner Liner) outer Tube #3 37 psi 26 psi Inner Tube #3 26 psi 14 psi 100 ml Laminated #3 63 psi 40 psi Tubinq #3 Second Inflation Outer Tube 3A 35 psi 25 psi Inner Tube 3A 24 psi 13 psi 100 ml Laminated 3A 59 psi 38 psi ~ote: 1 Observed that third and fourth inflation bring no signifi~ant change to results from inflation #2 for all samples 2 All inflations were maintained for 30 minutes with 15 minute interval between inflations 1 and 2 ~9~7~1 AS will be apparent to those skilled in the art in light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
AEROSOL POWER SYSTEM
FIELD OF THE INVENTION
This invention is directed to a novel bladder-type aerosol power system which can be used in a stand-ard aerosol spray container. More particularly, this invention pertains to an aerosol powering system which utilizes a rubber-type bladder to generate the expulsion power for the aerosol. This system circumvents the need to use volatile propellants which have been demonstrated to be harmful to the protective ozone layer of the earth.
BACKGROUND OF THE INVENTION
In recent years, there has been alarming evi-dence that the protective ozone layer of the earth is shrinking in thickness. The ozone layer is critical to the health of living organisms inhabiting the earth because the ozone layer filters out deadly ultra-violent rays, and other rays, emitted by the sun. Considerable evidence has been gathered to demonstrate that the damage that is occurring to the ozone layer is caused by a number of mankind generated free radicals and Freeon-type propellents which have been used in aerosol con-tainer spray systems for many years. These propellents are lighter than the atmosphere and rise to the eleva-tion of the ozone layer. Chemical reactions then takeplace between the radicals and the ozone in the ozone layer thereby forming other compounds and complexes and diminishing the free ozone in the ozone layer. There has even been recent evidence to indicate that deadly holes have appeared in certain portions of the ozone ~91731 layer, for example, over Antarctica. If this trend con-tinues, then the health of mankind will be jeopardized.
Recently, industrialized nations of the world 5 have agreed to an international molatorium on the use of substances which have been demonstrated to have a destructive effect on the ozone layer of the earth. In 1987, the United Stated enacted some sunset-type legis-lation which will force companies who are manufacturing substances which are demonstrated to have a destructive effect on the ozone layer, to phase out production of such harmful substances over a specified number of years. One of the most ozone layer destructive family of substances being manufactured are fluorocarbons (Freons), which are widely used as coolants in refriger-ation systems, and as propellents in aerosol spray con-tainers holding products such as hair spray, cleaning compounds, and the like.
Because of the mounting evidence that fluorocar-bon propellents, and similar type propellents, in aero-sol contained spray system, have accumulative damaging effect on the ozone layer, it is critical to the long term health of living beings on the ear~h to develop alternative aerosol generating containers which do not rely upon ozone destroying propellents. As an alterna-tive, many aerosol-type consumer products recently introduced on the market use a pump type aerosol spray generating system, rather than the volatile propellent contained in an aerosol container. However, such manually operated aerosol pump systems are not entirely satisfactory because they are incapable of generating a fine consistent spray similar to the type that is gener-ated by an aerosol container employing a fluorocarbon propellent.
~;291731 A number of patents have been granted in recent years for aerosol generating pump systems, and the like.
These are useful as alternatives to volatile propellent aerosol generating systems. U.S. Patent No. 3,993,069, for example, illustrates a pumping system which utilizes a natural rubber bladder which is inflated and thereby generates pumping action from the force created by the bladder in seeking to return to its original size and shape.
SUMMARY OF THE INVENTION
I have invented an aerosol spray generating system which utilizes a special rubber tube to generate the power required to create the aerosol spray, when the liquid contents in the aerosol can are forced into a spray nozzle.
A power system for an aerosol spray generatlng nozzle comprising: (a) nozzle means adapted to generate an aerosol vapour spray; and (b) a hollow resilient means connected to the nozzle means, the resilient means being adapted to contain the liquid used to generate the aerosol spray, and generate a pressure on the liquid when filled with the liquid.
In the apparatus as defined, the resilient means may have a liner which separates the resilient means from the liquid. The resilient means may be formed of natural rubber. In the apparatus, the liner is separate from the resilient means. The liner may be formed of a material selected from the group of materials consisting of food grade silicone rubber, natural latex, and Neoprene.
~.~917~1 In the apparatus as defined, the resilient means can be capable of expanding at least about 600%. The liner can be capable of expanding at least about 800%.
The resilient means can be constructed in the form of a elongated tube which is closed at one end, is open at the other end, and has a collar around the open end.
In the apparatus as defined, the liner tube can be adapted to fit into the interior of the resilient tube means. The apparatus can include a connector means which connects the collars of the liner tube and the resilient tube means with the nozzle means.
In the apparatus as defined, the resilient tube means and the liner tube can be housed in a container, and the nozzle means can be located at the top of the container and attached to the container and the pair of tubes.
DRAWINGS
In the drawings, which represent specific embodiments of the invention, but which should not be regarded as restricting the spirit or scope of the invention in any way:
Figure 1 illustrates a side elevation partial section view of a liner-power tube combination in inflated condition inside an aerosol can;
Figure 2 illustrates a side elevation view of a liner tube;
Figure 3 illustrates a side elevation view of a power tube;
~9~731 Figure 4 illustrates a side elevation view of a liner tube inserted into a power tube;
Figure 5 illustrates a side elevation partial section view of a liner-power tube-aerosol valve arrangement;
Figure 6 illustrates a graph of pressure against air volume behaviour for an inflated and re-inflated power tube.
DETAILED DESCRIPTION OF SPECIFIC
EMBODIMENTS OF THE INVENTION
Referring to the drawings, Figure l illustrates a side elevation partial section view of the components that make up the bladder powered aerosol can 2. As seen in Figure 1, a conventional aerosol can 2 has at the top thereo~ a stamped metal can top 4. Inserted into the interior of the can 2 through can top ~, is a rubber power tube 10, which embraces an inner liner tube 8. A
conventional aerosol spray nozzle-cap 6 is positioned above the liner tube 8 and the power tube 10. A connec-tor 16 and a collar 14 combination is used to enabie the various components to be assembled together.
Figure l illustrates a side partial-section view of the manner in which the liner tube 8 and the power tube 10 inflate within the interior of aerosol can 2, when the liner tube 8 is pumped fall of an appropriate consumer product. AS seen in Figure 1, which can be interpreted somewhat as a stylized representation in order to illustrate the function of the invention, the outside of liner tube 8 remains juxtapositioned against the inside of power tube 10. When the spray top 6 is q;~.731 manually activated, the energy stored in the expanded power tube lO forces a small portion of the contents of liner tube 8 out to the nozzle of the spray top 6. The size of the power tube lO and the liner tube 8 gradually decrease as the contents of the liner tubes are gradu-ally expelled through repeated activations of nozzle 6.
Figure 2 illustrates a side elevation view of the liner tube 8. This liner tube 8 may be constructed of a number of suitable liquid impermeable resilient materials, depending upon the nature of the contents that are to be packaged in the interior of the liner tube 8. The liner tube 8 has a flange 9 around the top thereof. If food items are to be contained in the liner tube, then a food grade quality silicone can be used for constructing the liner tube 8. For non-food contents, the liner tube can be manufactured of natural latex, or a synthetic rubber such as Neoprene, manufactured by Thiokol.
Figure 3 illustrates a side elevation view of the power tube lO, with top flange 11. The power tube 10 is critical to the successful operation and perform-ance of the aerosol generating power system. The power tube 10 is preferably constructed of a natural formu-lated rubber obtained from Malaysia. The natural rubber from which the power tube lO is formed, should be capa-ble of expanding at least 600%. Proportionately, the liner 8 should be constructed of a resilient material which can expand in the order of 800 to 1,000%. This is necessary in order to permit the liner tube 8 to remain abutted against the interior of the power tube 10 when inflation or deflation occurs. In other words, the liner tube 8 must be able to expand proportionately greater than the power tube 10, in order that the two ~917~1 items can remain closely juxtapositioned when the power tube 10 and the liner tube 8 are inflated with the contents that are to be held in the aerosol container.
Figure 4 illustrates side elevation view the manner in which the liner tube 8 is positioned in the interior of the power tube 10. The orientation illus-trated in Figure 4 is in the "at-rest" position.
Figure 5 illustrates in side elevation partial-section view a valve connecting arrangement that can be utilized for the liner tube 8-power tube 10 combination.
The liner tube 8 and power tube 10 are held in place by a collar 14. This collar 14 can be molded of a suitable polymer material. The liner 8-power tube 10-collar 14 combination are fitted into a connector 16, which is secured to the underside of the can top 4 of the aerosol container. Connector 16 has a fill-hole formed therein, which can be utilized for top-filling the liner 8 with the product that i8 to be packaged in the aerosol con-tainer. A one way valve is secured to the bottom part of the fill-hole 18 in order to prevent the contents of the aerosol container from exiting through the fill-hole 18 once the aerosol container has been filled.
Figure 6 illustrates a graphical depiction of the relationship between pressure and air volume as the bladder-like means (power tube 10) is inflated with air.
The solid line depicts the pressure behaviour of the tube 10 upon first inflation up to 100 millimeters of air. The dotted line depicts the pressure behaviour of the tube 10 upon reinflation up to 100 millimeters of air after the power tube 10 has been deflated following the first inflation. As can be seen in Figure 6, the pressure rises in a linear manner until a threshold ~9~7~
"set" peak is reached. At that point, the pressure drops to a certain extent while the power tube is being inflated with additional air. Once the threshold peak has been passed, and a consistent pressure has been reached, a generally horizontal relationship between air volume and pressure is realized, up to the full infla-tion volume of 100 millimeters of air. Interestinyly, upon re-inflation, the same relationship is noted except that the pressure-air volume gradient follows a lower path.
An important advantage of an aerosol powering system according to the invention is that it can be used in any position. It is not necessary to hold the aerosol can upright. Moreover, it operates efficiently at pressures lower than those typically used for propel-lent powered aerosol container system. Thus, with an aerosol power system according to the inventionl it is not necessary to mark the containers as explosive or inflammable. Another important advantage of the aerosol power system of the invention is that no solvent dilu-tion of the consumer product that is contained in the inner liner takes place because there is no propellant or solvent.
Example 1 Prototypes of the invention have been construct-ed utilizing a natural rubber obtained and formulated in Malaysia, and a liner tube 8 formed of natural latex.
Normally, aerosol containers are pressurized to about 60 psi in order to obtain the desired aerosol spray effect.
This high pressure can be somewhat dangerous, particu-larly if the aerosol can is heated, eg. thrown into a fire. In distinction, the prototype, it has been dis-~;~9~73~
covered need only pressurize the contents of the innerliner 8, and power tube 10 to about 22 psi. Moreover, it has been found that the pressure-size gradient for the power tube, as it is inflated and then deflated, once it passes a threshold peak, is nearly horizontal.
There is a rise in pressure as the power tube 10 is initially inflated or returns to its original uninflated condition. The virtually horizontal pressure gradient, throughout most of the inflation-deflation cycle of the power tube 10 is advantageous because it provides con-sistent pressure and enables a consistent fine aerosol spray to be obtained from the time the liner 8 and power tube 10 are fully inflated with the consumer product and then subsequently deflated in stages, by actuating the aerosol cap 6, until the point is reached where the con-tents of the liner tube 8 are almost fully evacuated.
Example 2 For~demonstration purposes, and to evaluate the viability of the power system of the invention, a liner tube-power tube combination was repeatedly inflated with 100 millimeters of air. (See Figure 6 for an example.) Various combinations of new power tube and new liner tubes, together with used power tubes and used liner tubes were used. The objective of these tests was to determine and record the different elongation and per-formance properties which the various brands of latex rubber that were used to produce the power tubes and the liner tubes. It was observed that after the third or fourth inflation, there was essentially no significant change in the pressure-volume relationship from further repeated inflations and deflations. TO provide consis-tency in the test results, all inflations were maintain-ed for thirty minutes with fifteen minute intervals V
between inflations. The results of these tests are summarizedin Table 1 below. The heading "Laminated" means power tube and liner tube in combination. "Set" means the threshold state of the power tube before expanding under increased pressure. Table 1 demonstrates how an elastic latex rubber outer tube and an elastic latex rubber inner tube cooperate together to increase total delivery pressure by the sum of the pressure in the outer tube and the pressure in the inner tube.
~'~917~
PRESSURE REQUIRED (DELIVERY) TO OVERCOME "SET" "STATIC" PRESSURE CAPACITY
Tubinq #l Standard outer First Inflation (Dark Orange Inner Liner) Outer Tube #1 37 psi 26 psi Inner Tube #1 20 psi 10 psi 100 ml Laminated #1 57 psi 36 psi Tubinq #l Second Inflation Outer Tube lA 35 psi 25 psi Inner Tube lA 18 psi 9 psi 100 ml Laminated lA 53 psi 34 psi Tubinq #2 Standard Outer First Inflation (Light Orange Inner Liner) Outer Tube #2 37 psi 26 psi Inner Tube #2 23 psi 12 psi 100 ml Laminated #2 60 psi 38 psi Tubinq #2 Second Inflation Outer Tube 2A 35 psi 24 psi Inner Tube 2A 21 psi 11 psi 100 ml Laminated 2A 56 psi 35 psi Tubinq #3 Standard Outer First Inflation (Red Inner Liner) outer Tube #3 37 psi 26 psi Inner Tube #3 26 psi 14 psi 100 ml Laminated #3 63 psi 40 psi Tubinq #3 Second Inflation Outer Tube 3A 35 psi 25 psi Inner Tube 3A 24 psi 13 psi 100 ml Laminated 3A 59 psi 38 psi ~ote: 1 Observed that third and fourth inflation bring no signifi~ant change to results from inflation #2 for all samples 2 All inflations were maintained for 30 minutes with 15 minute interval between inflations 1 and 2 ~9~7~1 AS will be apparent to those skilled in the art in light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
Claims (16)
1. An elastic rubber power system for an aerosol spray generating nozzle comprising:
(a) nozzle means with an intake and an outlet adapted to generate an aerosol vapour spray when a liquid is pressure dispensed through the nozzle;
(b) a hollow enclosed resilient inner means connected to the intake of the nozzle means, the resilient inner means being constructed of natural elastic rubber and being adapted to contain the liquid used to generate the aerosol vapour spray, and to generate a pressure on the liquid when filled with the liquid to the point where the resilient means is expanded beyond its normal shape; and (c) a hollow enclosed resilient outer means enclosing resilient inner means (b), the outer means being constructed of natural elastic rubber and being adapted to cooperate with the resilient inner means (b) to generate pressure on the liquid when the inner means is filled with the liquid to a point where the inner means and the outer means are expanded beyond their normal shape.
(a) nozzle means with an intake and an outlet adapted to generate an aerosol vapour spray when a liquid is pressure dispensed through the nozzle;
(b) a hollow enclosed resilient inner means connected to the intake of the nozzle means, the resilient inner means being constructed of natural elastic rubber and being adapted to contain the liquid used to generate the aerosol vapour spray, and to generate a pressure on the liquid when filled with the liquid to the point where the resilient means is expanded beyond its normal shape; and (c) a hollow enclosed resilient outer means enclosing resilient inner means (b), the outer means being constructed of natural elastic rubber and being adapted to cooperate with the resilient inner means (b) to generate pressure on the liquid when the inner means is filled with the liquid to a point where the inner means and the outer means are expanded beyond their normal shape.
2. An apparatus as defined in claim 1 wherein the inner means (b) is formed of a material selected from the group of materials consisting of food grade silicone rubber, natural latex and neoprene.
3. An apparatus as defined in claim 1 wherein the resilient inner means (b) is capable of expanding at least about 800 percent.
4. An apparatus as defined in claim 3 wherein the resilient outer means (c) is capable of expanding at least about 600 percent.
5. An apparatus as defined in claim 4 wherein the resilient outer means (c) is constructed in the form of an elongated tube which is closed at one end, is open at the other end, and has a flange around the open end.
6. An apparatus as defined in claim 5 wherein the resilient inner means is constructed in the form of an elongated tube which is closed at one end, is open at the other end, and has a flange around the open end.
7. An apparatus as defined in claim 6 wherein the resilient inner means (b) is adapted to fit congruently into the interior of the resilient outer means (c).
8. An apparatus as defined in claim 7 wherein connector means connects the flanges of the resilient inner means (b) and the resilient outer means (c) with the nozzle means (a).
9. An apparatus as defined in claim 8 wherein the resilient inner means (b) and the resilient outer means (c) are housed in a container and the nozzle means (a) is located at the top of the container and is attached to the container and to the inner means (b).
10. An apparatus as defined in claim 3 wherein the resilient outer means (c) is formed of natural latex rubber.
11. An apparatus as defined in claim 1 wherein the resilient inner means (b) is formed of natural latex rubber.
12. An apparatus as defined in claim 10 or 11 wherein the combination of the resilient outer means (c) and the inner means (b), when inflated beyond their natural shape, generate a pressure of at least 35 psi.
13. A method of powering an aerosol spray generating nozzle (a) having an inlet and an outlet, which comprises sealably
14 securing to the inlet of the nozzle (a) the open end of an enclosed elastic latex rubber inner tube with an open end (b), and the open end of an enclosed elastic latex rubber outer tube with an open end (c), the outer tube (c) surrounding the inner tube (b), the elasticity of the inner tube (b) and the elasticity of the outer tube (c), when expanded beyond their natural shape, cooperating together to provide cumulative power to expel liquid contents held in the inner tube (b) through the nozzle (a).
14. A method as defined in claim 13 wherein the outer tube (c) expands at least 600 percent.
14. A method as defined in claim 13 wherein the outer tube (c) expands at least 600 percent.
15. A method as defined in claim 14 wherein the inner tube (b) expands at least 800 percent.
16. A method as defined in claim 13, 14 or 15 wherein the outer tube (c) and the inner tube (b) together generate a total pressure on the liquid contents of the inner tube (b) of at least about 35 psi.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000576108A CA1291731C (en) | 1988-08-30 | 1988-08-30 | Aerosol power system |
| EP89115703A EP0361091A1 (en) | 1988-08-30 | 1989-08-25 | Aerosol power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000576108A CA1291731C (en) | 1988-08-30 | 1988-08-30 | Aerosol power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1291731C true CA1291731C (en) | 1991-11-05 |
Family
ID=4138647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000576108A Expired - Lifetime CA1291731C (en) | 1988-08-30 | 1988-08-30 | Aerosol power system |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0361091A1 (en) |
| CA (1) | CA1291731C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4333627C2 (en) * | 1993-10-04 | 2000-09-07 | Kertels Peter | Packaging as a dispenser for a pressurized, fluid filling material |
| DE10336011B3 (en) * | 2003-08-01 | 2004-09-30 | Bosch, Karl, Calgary | Device for atomizing liquids for use in or on the body comprises a reversibly extendable inner element that contracts on actuation of a spray device |
| EP1912878A2 (en) | 2005-07-20 | 2008-04-23 | Türk GmbH&Dr. Bernd Höfler Gbr | Spraying device, method for the production thereof, and use thereof |
| WO2010085979A1 (en) * | 2009-01-30 | 2010-08-05 | Noatec Gmbh | Container for storing and metering delivery of a bulk material |
| DE102010018915B4 (en) | 2010-04-30 | 2013-07-18 | NOAFLEX GmbH | Filling container with a radially and axially expandable force generating body |
| DE102010018890A1 (en) | 2010-04-30 | 2011-11-03 | Noatec Gmbh | Container for filling material, particularly for use as fire extinguisher, has housing with housing wall and housing interior, where elastically stretchable hollow body is projected in housing interior to form filling chamber |
| DE102010018888B4 (en) | 2010-04-30 | 2013-06-27 | NOAFLEX GmbH | Filling application device with a rubber-elastic force generating body with load-optimized wall geometry |
| DE102010018889B4 (en) | 2010-04-30 | 2013-06-20 | NOAFLEX GmbH | Container with a filling material receiving body made of silicone and a connecting ring made of plastic |
| DE102011011352B4 (en) | 2011-02-16 | 2013-06-06 | NOAFLEX GmbH | Reibungsgeminderter Füllgütbehälter with rubber-elastic force generating body for receiving the contents |
| US11447326B2 (en) | 2019-12-19 | 2022-09-20 | Thomas M. Risch | System and method for a reusable dispensing container |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121737A (en) * | 1975-11-24 | 1978-10-24 | Kain's Research and Development Co., Inc. | Apparatus for pressure dispensing of fluids |
| CA1077001A (en) * | 1976-10-21 | 1980-05-06 | Winfried J. Werding | Appliance for discharging gaseous liquid or pasty product, and process of its manufacture |
| US4222499A (en) * | 1979-05-07 | 1980-09-16 | Kain's Research & Development Company, Inc. | Pressurized fluid dispensing apparatus having expansible bladder held in place with compressive forces |
-
1988
- 1988-08-30 CA CA000576108A patent/CA1291731C/en not_active Expired - Lifetime
-
1989
- 1989-08-25 EP EP89115703A patent/EP0361091A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0361091A1 (en) | 1990-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5127554A (en) | Aerosol power system | |
| CA1291731C (en) | Aerosol power system | |
| US4049158A (en) | Pressurized container-dispensers and filling method | |
| US5143260A (en) | Aerosol adapter clamp and power system | |
| US4121737A (en) | Apparatus for pressure dispensing of fluids | |
| JP3602585B2 (en) | Equipment for scattering confetti | |
| US4643210A (en) | Inflatable umbrella | |
| US4762231A (en) | Pneumatic device for holding articles in containers | |
| KR101004628B1 (en) | Dispenser | |
| US3378864A (en) | Atmospherically self-inflating buoyant device | |
| IL103857A0 (en) | Inflatable medical devices and their manufacture | |
| CA2437692A1 (en) | Adhesive container and method of filling | |
| US4135325A (en) | Inflatable flying saucer toy | |
| AR246905A1 (en) | Vacuum packaging | |
| US4898561A (en) | Self-inflating toy | |
| IE43082B1 (en) | Foam dispenser | |
| US6331131B1 (en) | Self inflating noise maker | |
| EP0574403B1 (en) | System for using aerosols and aerosol packages | |
| US5613892A (en) | Inflatable plush toy | |
| EP0178573A2 (en) | A pressure fluid dispenser and method of making the same | |
| US3451882A (en) | Flat-folded inflatable replicas of three-dimensional articles | |
| ES2161073T3 (en) | PROCEDURE FOR THE MANUFACTURE OF A PRESSURE CONTAINER WITH TWO CHAMBERS AND DEVICE TO CARRY OUT THE PROCEDURE. | |
| DE60323990D1 (en) | SAFETY DEVICE OF AIRBAG TYPE | |
| US5480339A (en) | Automatically inflatable toy | |
| US7128013B1 (en) | Launch tube system having inflatable bladder shock isolation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |