US3604586A - Cartridges containing carbon-dioxide for household purposes - Google Patents

Cartridges containing carbon-dioxide for household purposes Download PDF

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Publication number
US3604586A
US3604586A US717591A US71759168A US3604586A US 3604586 A US3604586 A US 3604586A US 717591 A US717591 A US 717591A US 71759168 A US71759168 A US 71759168A US 3604586 A US3604586 A US 3604586A
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Prior art keywords
plug
cartridge
carbon dioxide
cartridges
neck part
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US717591A
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Lajos Baldauf
Imre Radnai
Janos Vasvari
Jozsef Wolf
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Orszagos Koolaj Es Gazipari Troszt
Orszagos Koeolaj es Gazipari Troeszt
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Orszagos Koeolaj es Gazipari Troeszt
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • F17C2205/032—Closure means pierceable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/012—Reducing weight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0736—Capsules, e.g. CO2

Definitions

  • the cartridges used for making soda water in the household are made, according to the invention, by a cold extrusion process in such a way that they have a pierceable diaphragm which is made in one'piece with the cartridge and is perfectly gastight at any climatic conditions.
  • a pierceable diaphragm which is made in one'piece with the cartridge and is perfectly gastight at any climatic conditions.
  • their bottom part is closed by an elastic plug pressed by the inner pressure to an inwardly flanged part of the bottom of the cartridge.
  • a further disadvantage of the present cartridges consists in that their filling and sealing are carried out at the front, that is at the neck part so that a separate sealing plug must be inserted into the neck part of the cartridge and this plug is made of a different material than the cartridge itself, since it must be soft and suitable for being pierced by the needle of the siphon bottle.
  • This sealing is not always perfect, therefore the cartridges when ready, must be stored for some weeks and then weighed.
  • the quantity of the underweighing cartridges-which are leaking-amounts to about percent or even more.
  • a further disadvantage of the repeated use consists in that the replacement of the sealing piece is difficult and, in addition, the inside of the cartridges becomes gradually rusty and dirty.
  • the invention is based in the first place on the perception that a cartridge made by means of cold extrusion will be strong enough that when made of relatively soft material, for instance of aluminum, it will resist safely the necessary internal pressure /approx. 70 to 75 atm./ and the aluminum makes possible a highly economical product ion of cartridges by means of cold extrusion.
  • a further advantage to be achieved by the invention is that cold extrusion makes it possible to make instead of a separate plug a pierceable diaphragm integral with the cartridge in the neck part whichespecially when made of aluminium-is easy to be pierced and at the same time its sealing effect is perfect so that it surely retains the carbon dioxide and its production does not require any special operation since during the cold extrusion of the cartridge the sealing piece can be made in one operation in an extremely short time, for instance within 0.5 sec. During that time the complete cold extrusion can be carried out.
  • care must be taken of that the filling be carried out at the bottom part of the cartridge-which will be called the lower part.
  • the invention provides in the neck part of the cartridge a pierceable, completely gastight diaphragm integral with the other parts of the cartridge and in the lower part a sealing bottom made of elastic material, preferably of plastic material is arranged which under the effect of the internal pressure engages the wall of the cartridge bottom whereby an excellent seal is ensured.
  • the invention eliminates the above-mentioned drawbacks sine the production costs of the cartridge are reduced to a fraction of those incurred hitherto, making thus possible for the user to throw away the cartridge after a single use.
  • the making of soda water in the household becomes extremely economical, the administrative work and considerable expenses of the return transport are eliminated, the cartridges are always clean and hygienic and in addition, they weigh less than the conventional ones.
  • the said diaphragm ensures a perfect tightening, so that storing is eliminated and no refuse occurs; the sealing is safe even under tropical conditions, say up to approx. 50 to 55 C. Therefore, there is no need for the specification of a guaranteed expiration time, as the cartridge is gastight practically for an unlimited period.
  • the needle of the siphon bottle can more easily pierce the diaphragm of the cartridge made of aluminum, than the plug used until now.
  • FIG. I is a section of the cylindrical body made by cold extrusion; on the right side of FIG. 1 an embodiment with a square transition of the constricted neck part, is shown whereas on the left side an embodiment with a rounded transition is to be seen.
  • FIG. 2 is a side view of the elastic bottom to be inserted, provided with ribs and shown in perspective;
  • FIG. 3 is the pertaining view from below; this figure shows at the same time in cross section, too, the cylindrical body made by cold extrusion.
  • FIGS. 4 and 5 show two similar views of another unribbed-embodiment of the elastic bottom.
  • FIGS. 6 to 9 indicate the above-mentioned various operations of the constriction and filling with carbon dioxide of the part made by cold extrusion, the elastic bottom being omitted in FIGS. 6 and 7, and with this bottom in FIGS. 8 and 9.
  • the cylindrical body I according to FIG. I provided with a constricted neck part is produced by a process and equipment known by themselves, by cold extrusion, using a cylindrical workpiece. Between the constricted neck part 2 and the cylindrical body I there is a conical transition part 3 which may be connected to the other parts either by a rounded-off passage or by a square one.
  • the diaphragm cross-wall 4 arranged in the neck part is similarly made by cold extrusion, its production therefore does not require a separate operation, the crosswall being integral with the neck part.
  • this cross-wall is thin, that is diaphragm like, the needle or the siphon bottle can easily pierce it and since its diameter is small, it can safely resist the internal overpressure and ensures, of course, a perfect seal since it is integral with the other wall parts.
  • the elastic bottom or plug 5 which is made preferably of plastic material, is hollow and bullet-shaped and has a smooth cylindrical part 6 at the lower side and ribs 7 on the upper cylindrical part. This bottom being inserted. the ribs 7 adhere to the aluminum wall maintaining thus the bottom in its place. The carbon dioxide, however, can freely stream in between the ribs.
  • a small, perhaps colored extension may be provided in the middle of the elastic bottom which may be made either of the material of the bottom or may consist of a separately inserted piece which penetrates the opening 9 or possibly extends therefrom to a small extent,
  • a carbon dioxide cartridge for household purposes comprising a cylindrical body having a bore therein to be filled with carbon dioxide gas under pressure and tapering to a constricted neck part and a constricted bottom part,
  • a carbon dioxide cartridge according to claim 1 in which the guide means for elastic plug is formed as outwardly extending ribs on said plug.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Closures For Containers (AREA)

Abstract

The cartridges used for making soda water in the household are made, according to the invention, by a cold extrusion process in such a way that they have a pierceable diaphragm which is made in one-piece with the cartridge and is perfectly gastight at any climatic conditions. For filling the cartridges from the rear, their bottom part is closed by an elastic plug pressed by the inner pressure to an inwardly flanged part of the bottom of the cartridge.

Description

United States Patent CARTRIDGES CONTAINING CARBON-DIOXIDE FOR HOUSEHOLD PURPOSES 2 Claims, 9 Drawing Figs.
US. Cl 220/3, 141/18, 141/] 13,220/66 Int. Cl B65d 17/00 Field of Search... 141/17-20. 329, 330, 113; 220/3, 55 PC, 66; 222/389, 402.16; 137/5311? [56] References Cited UNITED STATES PATENTS 2,755,8l6 7/1956 Collins 137/5311? X 545,351 8/1895 Durafort. 141/19 X 1,725.775 8/1929 Badger 141/19 X 3,179,309 4/1965 Cope l. 222/389 FOREIGN PATENTS 9,178 2/1901 Norway 220/3 Primary Examiner-Laverne D. Geiger Assistant Examiner- Edward .1 Earls Aimrney-Y0ung & Thompson ABSTRACT: The cartridges used for making soda water in the household are made, according to the invention, by a cold extrusion process in such a way that they have a pierceable diaphragm which is made in one'piece with the cartridge and is perfectly gastight at any climatic conditions. For filling the cartridges from the rear. their bottom part is closed by an elastic plug pressed by the inner pressure to an inwardly flanged part of the bottom of the cartridge.
CARTRIDGES CONTAINING CARBON-DIOXIDE FOR HOUSEHOLD PURPOSES The cartridges containing high-pressure carbon dioxide and serving for household purposes are used in large quantities since they serve for preparing soda water at home in so-called siphon bottles. The cartridges used at present are made of steel. their production is relatively expensive since for their manufacture costly material, for instance fine steel is needed and the production itself requires more than 30 intricate operations.
A further disadvantage of the present cartridges consists in that their filling and sealing are carried out at the front, that is at the neck part so that a separate sealing plug must be inserted into the neck part of the cartridge and this plug is made of a different material than the cartridge itself, since it must be soft and suitable for being pierced by the needle of the siphon bottle. This sealing is not always perfect, therefore the cartridges when ready, must be stored for some weeks and then weighed. Experience shows that the quantity of the underweighing cartridges-which are leaking-amounts to about percent or even more.
The known expensive steel cartridges are not discarded after a single use but they are repeatedly refilled. This, however, requires the collecting and transport to the workshop of the used cartridges incurring thus considerable transport charges even.
A further disadvantage of the repeated use consists in that the replacement of the sealing piece is difficult and, in addition, the inside of the cartridges becomes gradually rusty and dirty.
The invention is based in the first place on the perception that a cartridge made by means of cold extrusion will be strong enough that when made of relatively soft material, for instance of aluminum, it will resist safely the necessary internal pressure /approx. 70 to 75 atm./ and the aluminum makes possible a highly economical product ion of cartridges by means of cold extrusion.
A further advantage to be achieved by the invention is that cold extrusion makes it possible to make instead of a separate plug a pierceable diaphragm integral with the cartridge in the neck part whichespecially when made of aluminium-is easy to be pierced and at the same time its sealing effect is perfect so that it surely retains the carbon dioxide and its production does not require any special operation since during the cold extrusion of the cartridge the sealing piece can be made in one operation in an extremely short time, for instance within 0.5 sec. During that time the complete cold extrusion can be carried out. When using the sealing diaphragm in the neck part, care must be taken of that the filling be carried out at the bottom part of the cartridge-which will be called the lower part. For this purpose the invention provides in the neck part of the cartridge a pierceable, completely gastight diaphragm integral with the other parts of the cartridge and in the lower part a sealing bottom made of elastic material, preferably of plastic material is arranged which under the effect of the internal pressure engages the wall of the cartridge bottom whereby an excellent seal is ensured.
The invention eliminates the above-mentioned drawbacks sine the production costs of the cartridge are reduced to a fraction of those incurred hitherto, making thus possible for the user to throw away the cartridge after a single use. Thus, the making of soda water in the household becomes extremely economical, the administrative work and considerable expenses of the return transport are eliminated, the cartridges are always clean and hygienic and in addition, they weigh less than the conventional ones. The said diaphragm ensures a perfect tightening, so that storing is eliminated and no refuse occurs; the sealing is safe even under tropical conditions, say up to approx. 50 to 55 C. Therefore, there is no need for the specification of a guaranteed expiration time, as the cartridge is gastight practically for an unlimited period.
I should be noted that the needle of the siphon bottle can more easily pierce the diaphragm of the cartridge made of aluminum, than the plug used until now.
The invention is shown on the enclosed drawings by way of example.
FIG. I is a section of the cylindrical body made by cold extrusion; on the right side of FIG. 1 an embodiment with a square transition of the constricted neck part, is shown whereas on the left side an embodiment with a rounded transition is to be seen.
FIG. 2 is a side view of the elastic bottom to be inserted, provided with ribs and shown in perspective;
FIG. 3 is the pertaining view from below; this figure shows at the same time in cross section, too, the cylindrical body made by cold extrusion.
FIGS. 4 and 5 show two similar views of another unribbed-embodiment of the elastic bottom.
FIGS. 6 to 9 indicate the above-mentioned various operations of the constriction and filling with carbon dioxide of the part made by cold extrusion, the elastic bottom being omitted in FIGS. 6 and 7, and with this bottom in FIGS. 8 and 9.
The cylindrical body I according to FIG. I, provided with a constricted neck part is produced by a process and equipment known by themselves, by cold extrusion, using a cylindrical workpiece. Between the constricted neck part 2 and the cylindrical body I there is a conical transition part 3 which may be connected to the other parts either by a rounded-off passage or by a square one. The diaphragm cross-wall 4 arranged in the neck part is similarly made by cold extrusion, its production therefore does not require a separate operation, the crosswall being integral with the neck part. Since this cross-wall is thin, that is diaphragm like, the needle or the siphon bottle can easily pierce it and since its diameter is small, it can safely resist the internal overpressure and ensures, of course, a perfect seal since it is integral with the other wall parts.
In order to fill the cartridge, in the lower end of the cylindrical body I there is arranged the elastic bottom or plug 5 according to FIGS. 2 and 3, which is made preferably of plastic material, is hollow and bullet-shaped and has a smooth cylindrical part 6 at the lower side and ribs 7 on the upper cylindrical part. This bottom being inserted. the ribs 7 adhere to the aluminum wall maintaining thus the bottom in its place. The carbon dioxide, however, can freely stream in between the ribs.
The same aim is achieved, although not as completely, by means of the cylindrical part without ribs ifthe diameter of this cylindrical part is somewhat larger than the inner diameter of the cylindrical body 1. Thus if this elastic bottom Sn is pressed into the lower end of the cylindrical body I, the part 7a-due to its larger diameter-will be wrinkled or will deflect at least at one point but possibly in several points as shown in FIG. 5 and thus the path of the carbon dioxide becomes free.
The elastic bottom being inserted, the lower end of the cylindrical body I is constricted that is bent or flanged as shown in FIG. 6, which is then followed by a further flanging as indicated in FIG. 7 (in both figures the elastic bottom is omitted for the sake of simplicity); now, a further and final flanging is carried out during which the carbon dioxide is led in which flows through the opening 9 at the bottom and between the ribs into the inside of the cartridge. The flow-in of carbon dioxide being now stopped and the pressure being reduced, the internal overpressure in the cartridge pushes the elastic bottom 5 above the opening 9, consequently the flange 8 of this bottom (FIG. 9) is forced against the inside wall of the cylindrical body 1 and ensures a perfect sealing. The displacement of the elastic bottom is indicated by an arrow in FIG. 8, whereas in FIG. 9 two arrows show the internal overpressure thrusting the elastic bottom against the flanged part of the cylindrical body, that is to say against that part which is not excessively distorted so that its inner surface is smooth enough for ensuring a perfect sealing. If, however, the elastic bottom were pressed into the opening 9 left free at the lower side, where the deformation would be considerable, it would be forced against the somewhat wrinkled inner surface of the bottom, failing thus to ensure a perfect gastightness.
If necessary, either for improving the seal or for esthetic reasons, a small, perhaps colored extension may be provided in the middle of the elastic bottom which may be made either of the material of the bottom or may consist of a separately inserted piece which penetrates the opening 9 or possibly extends therefrom to a small extent,
We claim:
1. A carbon dioxide cartridge for household purposes, comprising a cylindrical body having a bore therein to be filled with carbon dioxide gas under pressure and tapering to a constricted neck part and a constricted bottom part,
a pierceable diaphragm cross-wall in the said neck part and integral with said neck part, said cross-wall being pierceable for the outflow of the carbon dioxide gas, said bottom part having a filling opening therein for filling in the said gas, and an elastic plug movable in said bore. said plug having guide means thereon to guide said plug in said bore. said plug being of hollow bullet shape having its nose tightly pressed by the pressure of the said gas into the said opening to close the same, 2. A carbon dioxide cartridge according to claim 1, in which the guide means for elastic plug is formed as outwardly extending ribs on said plug.

Claims (2)

1. A carbon dioxide cartridge for household purposes, comprising a cylindrical body having a bore therein to be filled with carbon dioxide gas under pressure and tapering to a constricted neck part and a constricted bottom part, a pierceable diaphragm cross-wall in the said neck part and integral with said neck part, said cross-wall being pierceable for the outflow of the carbon dioxide gas, said bottom part having a filling opening therein for filling in the said gas, and an elastic plug movable in said bore, said plug having guide means thereon to guide said plug in said bore, said plug being of hollow bullet shape having its nose tightly pressed by the pressure of the said gas into the said opening to close the same.
2. A carbon dioxide cartridge according to claim 1, in which the guide means for elastic plug is formed as outwardly extending ribs on said plug.
US717591A 1967-04-14 1968-04-01 Cartridges containing carbon-dioxide for household purposes Expired - Lifetime US3604586A (en)

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JP (1) JPS494413B1 (en)
AT (1) AT278499B (en)
BE (1) BE716695A (en)
BG (1) BG15747A3 (en)
CH (1) CH506747A (en)
CS (1) CS153009B2 (en)
DE (1) DE1757097C3 (en)
FR (1) FR1571409A (en)
GB (1) GB1212101A (en)
NL (1) NL6805145A (en)
SE (1) SE336589B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159057A (en) * 1975-03-18 1979-06-26 Kabushiki Kaisha Daini Seikosha Sealed sample capsule used for thermal analyzer
WO1992008508A1 (en) * 1990-11-09 1992-05-29 Sy-Quest International Limited Needleless hypodermic jet injector device
US6454243B2 (en) * 2000-02-14 2002-09-24 The Meyer Company Springless seat cup
EP1488864A1 (en) * 2003-06-19 2004-12-22 De' Longhi S.P.A. Method to produce a steam boiler for a domestic appliance
EP2062850A2 (en) * 2007-11-08 2009-05-27 C. EN. Limited Apparatus for storage and liberation of compressed hydrogen gas in microcylindrical arrays and system for filling the microcylindrical arrays

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
GB2123131B (en) * 1982-06-29 1985-12-04 Thorn Emi Domestic Electrical Gas containers
DE20302535U1 (en) 2003-02-17 2003-06-18 TRW Fahrwerksysteme GmbH & Co. KG, 40547 Düsseldorf Hydraulic pump for a power steering system
US20060006108A1 (en) * 2004-07-08 2006-01-12 Arias Jeffrey L Fuel cell cartridge and fuel delivery system
GB0517269D0 (en) * 2005-08-23 2005-10-05 Boc Group Plc Method and apparatus for testing a gas capsule

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Publication number Priority date Publication date Assignee Title
US545351A (en) * 1895-08-27 dtjrafort
US1725775A (en) * 1926-04-13 1929-08-27 Arthur C Badger Fire extinguisher
US2755816A (en) * 1949-05-07 1956-07-24 Collins Valve Company Inc Check valves
US3179309A (en) * 1960-11-28 1965-04-20 Procter & Gamble Tape valve for pressurized containers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US545351A (en) * 1895-08-27 dtjrafort
US1725775A (en) * 1926-04-13 1929-08-27 Arthur C Badger Fire extinguisher
US2755816A (en) * 1949-05-07 1956-07-24 Collins Valve Company Inc Check valves
US3179309A (en) * 1960-11-28 1965-04-20 Procter & Gamble Tape valve for pressurized containers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159057A (en) * 1975-03-18 1979-06-26 Kabushiki Kaisha Daini Seikosha Sealed sample capsule used for thermal analyzer
WO1992008508A1 (en) * 1990-11-09 1992-05-29 Sy-Quest International Limited Needleless hypodermic jet injector device
US6454243B2 (en) * 2000-02-14 2002-09-24 The Meyer Company Springless seat cup
EP1488864A1 (en) * 2003-06-19 2004-12-22 De' Longhi S.P.A. Method to produce a steam boiler for a domestic appliance
EP2062850A2 (en) * 2007-11-08 2009-05-27 C. EN. Limited Apparatus for storage and liberation of compressed hydrogen gas in microcylindrical arrays and system for filling the microcylindrical arrays

Also Published As

Publication number Publication date
FR1571409A (en) 1969-06-20
AT278499B (en) 1970-02-10
DE1757097C3 (en) 1973-11-22
CH506747A (en) 1971-04-30
JPS494413B1 (en) 1974-01-31
BE716695A (en) 1968-12-02
DE1757097A1 (en) 1970-05-06
BG15747A3 (en) 1975-12-15
CS153009B2 (en) 1974-02-22
GB1212101A (en) 1970-11-11
NL6805145A (en) 1968-10-15
SE336589B (en) 1971-07-12
DE1757097B2 (en) 1973-05-03

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