US2978152A - Aerosol can - Google Patents

Aerosol can Download PDF

Info

Publication number
US2978152A
US2978152A US78709359A US2978152A US 2978152 A US2978152 A US 2978152A US 78709359 A US78709359 A US 78709359A US 2978152 A US2978152 A US 2978152A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
liquid
chamber
aerosol
heat
expansion
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
Application number
Inventor
Edward G Batty
Original Assignee
Edward G Batty
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/32Dip-tubes

Description

E. G. BATTY April 4, 1961 AEROSOL CAN Filed Jan. 15, 1959 INVENTOR Edward 6 Batty ATTORNEY state at the nozzle.

United States atent AEROSOL CAN Edward G. Batty, 8611 Hartsdale Ave., Bethesda 14, Md.

Filed Jan. 15, 1959, s81. No. 787,093

4 Claims. (Cl. 222-394) (Granted under Title 35, US. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment to me of any royalty thereon.

This invention relates to an apparatus for improving the operability pressurized aerosol containers.

More specifically the object of this invention is to prevent freezing and clogging of the nozzle mechanisms due to the rapid expansion of the liquid propellant into the gaseous state which takes place at the nozzle.

Other objects of my invention will be seen from the following description and from the accompanying drawing which shows my improved aerosol container mechanism.

Pressurized aerosol container mechanisms are employed for many types of operations, and one of these is for the decontamination of materials and small areas where it is impossible to decontaminate by other means, such as by an autoclave process. Sterilization by means of aerosols from pressurized aerosol containers proved to be advantageous because of the ease of which these containers can be employed in most any' type of situation. For example, the decontamination of an article in a submarine. could easily be accomplished by using a pressurized aerosol container which is small and easy to transport. 7

' A mixture of 11% ethylene oxide, 44.5% dichlorodifiuoromethane and 44.5% trichlorofluoromethane was found" to produce an efiective non-flammable decontaminant. Since all three of these substances are gases at room temperature, all will vaporize when entering the atmosphere. this mixture of.liquids would expand into the gaseous would be obtained from the surrounding atmosphere, which generally would contain a considerable amount of water vapor. This water vapor would condense and freeze on the nozzle thereby clogging the parts and hindering the operation. The higher the internal pressure, the greater is the tendency of the nozzle to freeze because of the extreme velocity at which the propellant liquids exit into the atmosphere.

, To overcome this freezing effect, I have .devised an apparatus whereby the exit speed is reduced, and wherein little or no expansion takes place at the nozzle thereby preventing any clogging ofthe nozzle.v

When' using a regular aerosol container,

Eitented Apr. 4, 1961 which has an insert plug 20 attached to it at one end.

The insert plug has an aperture 22 which permits the flow of the liquid propellant into the expansion chamber. The expansion chamber, which is shown as a spheroid, but which can be made in any desirable shape, is connected by means of a suitable connector 24 to the flexible tube 26 which in turn is connected to the valve mechanism. It is important that the chamber be made of a material which will not deteriorate when in contact with the liquid contents, and which has high heat transfer properties. Metallic substances such as steel, copper, aluminum etc., are good examples of materials with these desirable properties.

The insert plug is advantageous because it prevents freezing at the aperture. It is necessary that the plug be made of material which has low heat transfer properties, such as certain plastics and, of course, it too must be compatible with the liquid contents.

In operation, the valve is opened thereby lowering the pressure within the expansion'chamber. The liquid contained in the chamber expands into a gas and is released through the nozzles. The heat necessary for this expansion or change of state is taken from the surrounding liquid and is conducted through the chamber walls. Since the inside plug is made of low heat conductive materials, only a small amount of heat will be conducted through this area. This will prevent any freezing or solidifying of the surrounding liquid which would tend to clog the passage into the chamber. In certain situations, the insert plug may not be required, but this The heat needed for vaporization The method of operation consists of expanding the liquid into the gaseous state within a chamber which is submerged in the liquid propellant and then allowing the already expanded materials to exit throughthe nozzle. The heat which is necessary for the expansionof the .liquids into the gaseous state is obtained from the liquid which surrounds :the chamber. 7 pe'rature' of the surrounding liquid islowered which In so doing, the temcauses the internal pressure and the exit velocity of the propellantsto belowered; The lowering of the internal pressure is particularly important when the outside depends on the conditions and the materials that are employed; that is, the liquid propellents and the expan- Other means may be used in tion of chamber near the aperture with a low heat conductive plastic.

My device will work in all positions because the heavy expansion chamber, being connected to a flexible tube, will always be at the bottom of the liquid body.

From the above disclosure it is seen that the freezing problem has been solved by my apparatus. The principles set forth in my invention can be employed in solving other problems in this field, such as the controlling of the internal pressure of the propellant and exit flow rates of the materials to be disseminated.

1 claim: 1. An improvement for a pressurized aerosol container for preventionnof valve freezing that contains a liquid fill, wherein said liquid fill consists of gases at normal room' temperatures and atmospheric pressures that have been compressed into a liquid state, a valve mechanism,

at least one dispensing outlet nozzle, a valve activator, and a flexible tube extending from said valve mechanism to the inside bottom of said container, said improvement comprising an expansion chamber having plural openings, one opening being connected to the end of said flexible tube, and a second of said openings being submerged in the liquid fill no matter what position the container is in, an insert 'plug having a small aperture extending therethrough, fitted in the second of said chamber openings, said insert plug being made of a material having relatively low heat transfer properties, said expansion chamber being made of a material having relatively high heat transfer properties and also having a density greater than the density of said liquid fill, and being chemically compatible with said liquid fill.

2. The apparatus of claim 1 wherein the insert plug is made of a plastic material.

3. The apparatus of claim 1 wherein the expansion chamber is made of a metallic substance which is inert to the liquid fill.

4. The apparatus of claim 3 wherein the metal chamber is spherical in shape.

References Cited in the file of this patent UNITED STATES PATENTS Schlosser Nov. 22, 1938 Thompson Dec. 1, 1946 Engstrum Dec. 18, 1956 Urlaub Jan. 22, 1957 Kiraly Oct. 29, 1957

US2978152A 1959-01-15 1959-01-15 Aerosol can Expired - Lifetime US2978152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2978152A US2978152A (en) 1959-01-15 1959-01-15 Aerosol can

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2978152A US2978152A (en) 1959-01-15 1959-01-15 Aerosol can

Publications (1)

Publication Number Publication Date
US2978152A true US2978152A (en) 1961-04-04

Family

ID=25140403

Family Applications (1)

Application Number Title Priority Date Filing Date
US2978152A Expired - Lifetime US2978152A (en) 1959-01-15 1959-01-15 Aerosol can

Country Status (1)

Country Link
US (1) US2978152A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129855A (en) * 1961-07-17 1964-04-21 Warner Lambert Pharmaceutical Aerosol package
US3303052A (en) * 1965-12-20 1967-02-07 Minnesota Mining & Mfg Oven coating process
US3490656A (en) * 1968-05-21 1970-01-20 Kenneth A Taschner Compressed gas-type liquid dispenser
US3667655A (en) * 1970-03-30 1972-06-06 Dow Chemical Co Method for the rapid assembly of diptubes into spray cans and a diptube useful therein
US5558518A (en) * 1992-08-10 1996-09-24 Novadent Ltd. Oral hygiene irrigator syringe bulb
US5755572A (en) * 1992-08-10 1998-05-26 Novadent Ltd. Oral hygiene irrigator syringe bulb

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137786A (en) * 1936-04-09 1938-11-22 Lectrolite Corp Spray oiler
US2412434A (en) * 1944-02-08 1946-12-10 Albert T Thompson Pressure vessel
US2774628A (en) * 1954-05-10 1956-12-18 Kathleen B Engstrum Apparatus for dispensing under pressure
US2778543A (en) * 1953-07-27 1957-01-22 Harry B Hollander Metering dispenser
US2811390A (en) * 1956-03-16 1957-10-29 Joseph L Kiraly Aerosol valve assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137786A (en) * 1936-04-09 1938-11-22 Lectrolite Corp Spray oiler
US2412434A (en) * 1944-02-08 1946-12-10 Albert T Thompson Pressure vessel
US2778543A (en) * 1953-07-27 1957-01-22 Harry B Hollander Metering dispenser
US2774628A (en) * 1954-05-10 1956-12-18 Kathleen B Engstrum Apparatus for dispensing under pressure
US2811390A (en) * 1956-03-16 1957-10-29 Joseph L Kiraly Aerosol valve assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129855A (en) * 1961-07-17 1964-04-21 Warner Lambert Pharmaceutical Aerosol package
US3303052A (en) * 1965-12-20 1967-02-07 Minnesota Mining & Mfg Oven coating process
US3490656A (en) * 1968-05-21 1970-01-20 Kenneth A Taschner Compressed gas-type liquid dispenser
US3667655A (en) * 1970-03-30 1972-06-06 Dow Chemical Co Method for the rapid assembly of diptubes into spray cans and a diptube useful therein
US5558518A (en) * 1992-08-10 1996-09-24 Novadent Ltd. Oral hygiene irrigator syringe bulb
US5755572A (en) * 1992-08-10 1998-05-26 Novadent Ltd. Oral hygiene irrigator syringe bulb

Similar Documents

Publication Publication Date Title
US3394851A (en) Metered aerosol valve for use with compressed gas
US3521792A (en) Dispensing actuator for component pressure cans
US3191533A (en) Gas discharge apparatus
US3117424A (en) Apparatus for generating gaseous mixtures for inflating inflatable devices
US3417901A (en) Reusable pressurized dispensing device
US5211317A (en) Low pressure non-barrier type, valved dispensing can
US4505336A (en) Fire extinguisher and liquid dispensing apparatus
US3109296A (en) Apparatus and method for refrigeration by carbon dioxide
US3785569A (en) Aerosol grenade
US3830214A (en) Gas weapon including cartridge case with plurality of gas containers therein
US2815152A (en) Dispensing package and method
US2621014A (en) Valve for the distribution or dispersion of fluids in small particles
US4399658A (en) Refrigeration system with carbon dioxide injector
US4697643A (en) Temperature-compensated pressure controller, operationally reliable extinguisher provided with such a pressure controller and process for filling such a pressure controller
US3985332A (en) Non-refillable safety valve
US2908446A (en) Spray tube
US3833029A (en) Method and apparatus for generating gaseous mixtures for inflatable devices
US4068780A (en) Electrothermally actuated fluid dispensing device
US5526957A (en) Multi-component dispenser with self-pressurization system
US4893730A (en) Aerosol dispenser for dual liquids
US4454963A (en) Fluid dispensing anti-burglar device
US4582228A (en) Irritant aerosol spray
US4973379A (en) Method of aerosol jet etching
US4377209A (en) Thermally activated metal hydride sensor/actuator
US3053422A (en) Reusable aerosol dispenser