US3245591A - Dispensing piston can - Google Patents

Dispensing piston can Download PDF

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Publication number
US3245591A
US3245591A US346301A US34630164A US3245591A US 3245591 A US3245591 A US 3245591A US 346301 A US346301 A US 346301A US 34630164 A US34630164 A US 34630164A US 3245591 A US3245591 A US 3245591A
Authority
US
United States
Prior art keywords
piston
cylinder
wall surface
container
wall
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
US346301A
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English (en)
Inventor
Raymond H P Kneusel
Frank R Buckley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Cork and Seal Co Inc
Original Assignee
Crown Cork and Seal Co Inc
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
Priority to NL130949D priority Critical patent/NL130949C/xx
Application filed by Crown Cork and Seal Co Inc filed Critical Crown Cork and Seal Co Inc
Priority to US346301A priority patent/US3245591A/en
Priority to DE19641450303D priority patent/DE1450303B1/de
Priority to DK614564AA priority patent/DK117890B/da
Priority to NL6500567A priority patent/NL6500567A/xx
Priority to NO156566A priority patent/NO117847B/no
Priority to GB4649/65A priority patent/GB1085341A/en
Priority to BE659911D priority patent/BE659911A/xx
Priority to FR6155A priority patent/FR1429520A/fr
Priority to ES0309948A priority patent/ES309948A1/es
Application granted granted Critical
Publication of US3245591A publication Critical patent/US3245591A/en
Priority to NL7005625A priority patent/NL7005625A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/64—Contents and propellant separated by piston

Definitions

  • This invention relates to containers which dispense their product under pressure upon release, for example to spray cans or the like.
  • This present invention has as its primary object the improvement of such a piston and its container.
  • the improvement in the piston relates to tapering the sides or o-uter wall thereof, to effect a better seal and wiping surface.
  • Another object of the invention is to make the piston of lighter gauge ⁇ material than the material used in the container, so as to effect an outward bias on the edge of the piston, thereby increasing the sealing and wiping contact.
  • Still a further object of this invention is to taper the wall of the container slightly so that it will be larger at its upper portion than -at its lower portion, whereby the piston at its down position is closer fitting than at its up position. This compensates for a decrease in pressure of the propellent as the product is used, and thereby assures complete product evacuation.
  • FIGURE 1 is a longitudinal cross-sectional view of one embodiment of the invention
  • FIGURE 2 is a partial longitudinal cross-sectional view of lanother embodiment
  • FIGURE 3 is a third embodiment partially shown in longitudinal cross-sectional.
  • the dispensing container illustrated in FIGURE 1 includes an elongated yseamless metal cylinder 10 having at its upper end a conventional neck portion 12 to which is secured a valve cup 14.
  • This cup has set in it a valve 16 including an actuator 18 having threads 2l) for receiving a plastic protective overcap (not shown) in conventional manner.
  • Valve 16 extends through an aperture in cup 14 to the underside thereof in the form of a rubber or like type ⁇ seat 22, which is normally maintained closed by cap 24.
  • sidewise pressure on actuator 18 disconnects cap 24 from the rubber seat 22 and allows the product, which is contained inside cylinder above metal piston 26, to be pushed upwardly thereby due to propellent pressure in the expandable area 28.
  • the product is consequently dispensed from element 18 in the usual way.
  • cylinder 10 The bottom en-d of cylinder 10 is covered by a closure secured at its edge 32 to the cylinder in a conventional double seam. Any type of desired propellent may be introduced into area 28 by regular methods through aperture 34 :and immediately thereafter the aperture is closed by a solid rubber plug 36.
  • the theory of a -met-al piston operating therein is that of a sliding bearing internally pressurized and can ybe compared with an internally pressurized hydrostatic lubricating system.
  • the sliding surfaces of the piston ca-use viscous drag of the product, which in turn creates a film pressure. That is, the upward movement of the piston creates a converging fluid wedge between the piston and inside wall of the cylinder, and this wedge develops a film pressure which will sustain an effective seal between that inside container wall and the outside wall of the metal piston.
  • the propellent of course, is preferably insoluble in the product, to the extent desired.
  • piston 26 has an annular wall 3S the outer surface of which converges downwardly relative to the inside wall of cylinder 10 at an angle 39 which is approximately one-half degree or more.
  • Angle 39 of the outside surface of wall may be greater, for example two degrees, but in any event and as to any given product being dispersed, it is never so great as to cause the piston to jam or cock which gives rise to the objectionable result of excessive by-passing of propellent outside or around the piston.
  • the angle is kept low enough to prevent too much product from wedging into the space between the walls.
  • About onehalf degree minimum taper is required in this embodiment, in order to have a suicient product wedge created between the outside surface of the piston wall and the inside surface of the cylinder wall, which is turn causes an increased product film pressure and a better seal.
  • Piston 26 in FIGURE l is of inverted cup shape, as are the pistons in the other embodiments disclosed herein, and wall 38 slopes downwardly and outwardly at a constant angle to the very edge 40 of the inverted cup 26, which edge makes the actual sealing and wiping contact with the cylinder wall.
  • this piston cup is made of lighter gauge material than the wall of cylinder 1t), whereby the wall 38 and its edge 4t) are given an outward bias effect or a spring-back principle, which will compensate for any out-of-around of either the container or piston itself. In turn, a better sealing and wiping contact of edge 40 with the inside surface of cylinder wall 10 will result.
  • the piston may be 0.0083 inch thick using pound tinplate while the container is of pound tinplate having a 0.0l1 thickness or so.
  • cylinder 1f has a larger inside diameter in its upper por-tion, as indicated at 42, than in its lower portion as at 44.
  • the purpose of such differing diameters is to cause the piston to have a closer fit at its down position where the propellent force is greater, than in its up positions where the propellent pressure has decreased.
  • the sides of .the container wall are not necessarily a perfect taper, though such may be effected if desired.
  • a six ounce can which has an internal diameter in the neighborhood of two inches and a total movement potential of the piston of slightly more than three inches, a
  • the diameter difference is in the range of from about 0.002 to 0.005 inch.
  • the differences in upper and lower diameters may be derived from redrawing and necking operations effected along with the cylinder drawing process.
  • FIGURES 2 and 3 Variations in the taper or divergence of the outside surface of the piston are shown in FIGURES 2 and 3 with the remaining structure of the container and pistons being as above described.
  • the piston wall 3S still slopes downwardly and outwardly at an angle 39 of from one-half degree to two ldegrees for example, but it straightens at 42,to effect a portion 44 which is parallel to the inside wall of container 10. This provides for a very snug fit and positive contact with the container, while giving the aforementioned advantage of the taper.
  • the wall 38" converges downwardly beginning at a smaller diameter and at its bottom flares into the edge 40.
  • the maximum film pressure is developed adjacent this edge as inthe other embodiments, but this flare type arrangement provides a better wiping action in general than the other two embodiments.
  • the fiare type embodiment is not as good for containers whose inside surface is coated with a relatively soft material.
  • annular metal piston slidably movable longitudinally through said cylinder snugly
  • a bottom cover for said cylinder including means for introducing a propellant to cause said piston to move upwardly in said cylinder, said propellant being of the type which effects decreasing pressure on said piston as the piston moves upwardly as aforesaid, and
  • said piston having an outer longitudinally extending surface internally pressurized by said propellant and converging downwardly with said wall surface toward the bottom edge of said outer surface to create a converging uid product wedge in the area of said edge as the piston moves upwardly, as aforesaidso as to increase the film pressure developed by the sliding of said surfaces and cause an effective seal and wiping contact therebetween, said bottom edge of the pistonv engaging the wall surface of said container and remaining in frictional Contact with said wall surface.
  • annular metal piston slidably movable longitudinally through said cylinder snugly
  • a bottom cover for said cylinder including means for introducing a propellant to cause said piston to move upwardly in said cylinder, said propellant being of the type which effects decreasing pressure on said piston as the piston moves upwardly as aforesaid, and
  • said piston having an outer longitudinally extending surface internally pressurized by said propellant and converging downwardly with said wall surface toward the bottom edge of said outer surface to create a converging fluid product wedge in the area of said edge as the piston moves upwardly, as aforesaid, so as to increase the film pressure develop-ed by the sliding of said surfaces and cause an effective seal and wiping contact therebetween, said botttom edge of the piston engaging the wall surface of said container and remaining in frictional contact with said wall surface, said piston being made of lighter gauge metal than said cylinder for providing an outward bias to said outer surface of said piston to cause said edge to hug said container wall surface snugly all the way around, at least in the lower portion of said container, and to increase said sealing and wiping contact, while maintaining said converging fluid product wedge.
  • annular metal piston slidably movable longitudinally through said cylinder
  • a bottom cover for said cylinder including means for introducing a propellant to cause said piston to move upwardly in said cylinder, and
  • said piston being in the form of an inverted cup and having an outer longitudinally extending wall surface converging downwardly and toward the inside wall surface of said cylinder to create' a converging fluid product wedge between said outer surface of the piston and the inner wall surface of the cylinder, said piston having only a bottom edge frictionally engaging the inner wall surface of said cylinder throughout the circumference ofsaid piston bottom edge for forming an effective seal and wiping contact between the piston and the inner cylinder wall, said piston being made of a metal having a characteristic of spring-biasing vthe bottom edge .of ⁇ the piston outwardly to cause said bottom edge of the piston to contact said cylinder inner wall snugly all the way around to increase said sealing and wiping Contact while maintaining said converging fluid product wedge.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Basic Packing Technique (AREA)
  • Hybrid Cells (AREA)
US346301A 1964-02-20 1964-02-20 Dispensing piston can Expired - Lifetime US3245591A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL130949D NL130949C (US20110009641A1-20110113-C00116.png) 1964-02-20
US346301A US3245591A (en) 1964-02-20 1964-02-20 Dispensing piston can
DE19641450303D DE1450303B1 (de) 1964-02-20 1964-12-01 Behaelter zur Ausgabe fliessfaehigen Behaelterinhalts durch Druckwirkung eines Treibmittels auf den Behaelterinhalt
DK614564AA DK117890B (da) 1964-02-20 1964-12-15 Sprøjtedåse.
NL6500567A NL6500567A (US20110009641A1-20110113-C00116.png) 1964-02-20 1965-01-18
NO156566A NO117847B (US20110009641A1-20110113-C00116.png) 1964-02-20 1965-01-19
GB4649/65A GB1085341A (en) 1964-02-20 1965-02-03 Improvements in or relating to piston type pressurised dispensing containers
BE659911D BE659911A (US20110009641A1-20110113-C00116.png) 1964-02-20 1965-02-18
FR6155A FR1429520A (fr) 1964-02-20 1965-02-18 Bidon à piston distributeur
ES0309948A ES309948A1 (es) 1964-02-20 1965-02-19 Perfeccionamientos en recipientes dispensadores de productos fluidos bajo presion.
NL7005625A NL7005625A (US20110009641A1-20110113-C00116.png) 1964-02-20 1970-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US346301A US3245591A (en) 1964-02-20 1964-02-20 Dispensing piston can

Publications (1)

Publication Number Publication Date
US3245591A true US3245591A (en) 1966-04-12

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ID=23358790

Family Applications (1)

Application Number Title Priority Date Filing Date
US346301A Expired - Lifetime US3245591A (en) 1964-02-20 1964-02-20 Dispensing piston can

Country Status (8)

Country Link
US (1) US3245591A (US20110009641A1-20110113-C00116.png)
BE (1) BE659911A (US20110009641A1-20110113-C00116.png)
DE (1) DE1450303B1 (US20110009641A1-20110113-C00116.png)
DK (1) DK117890B (US20110009641A1-20110113-C00116.png)
ES (1) ES309948A1 (US20110009641A1-20110113-C00116.png)
GB (1) GB1085341A (US20110009641A1-20110113-C00116.png)
NL (3) NL6500567A (US20110009641A1-20110113-C00116.png)
NO (1) NO117847B (US20110009641A1-20110113-C00116.png)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583491A (en) * 1969-01-30 1971-06-08 Serlachius Oy Portable fire extinguisher construction
US3613961A (en) * 1969-02-03 1971-10-19 Oreal Dispensing container
US3908512A (en) * 1972-07-12 1975-09-30 Bbc Brown Boveri & Cie Explosion gas operated piston-cylinder structure
US3917124A (en) * 1972-04-13 1975-11-04 Oatey Co Follow plate for dispensing material
FR2331485A1 (fr) * 1975-11-13 1977-06-10 Johnson & Son Inc S C Procede et dispositif pour mettre sous pression un recipient-distributeur
US4045938A (en) * 1976-03-26 1977-09-06 Barrier Pressure Container, Inc. Method of filling barrier pressure container
DE2722265A1 (de) * 1976-06-08 1977-12-22 George Bernard Diamond Druckbehaelter zur aufnahme eines stoffes sowie eines treibmittels
US4152820A (en) * 1978-02-09 1979-05-08 Dorzok Leroy D Method of expanding shot tip
US4154377A (en) * 1977-06-06 1979-05-15 Petrolube Corporation Grease supply cartridge for dispensing
US4271991A (en) * 1976-06-08 1981-06-09 Diamond George B Low pressure dispensing
US4577783A (en) * 1973-03-15 1986-03-25 Marson Corporation Dispenser
US4703875A (en) * 1986-07-24 1987-11-03 S. C. Johnson & Son, Inc. Low mass piston for aerosol container
US4730752A (en) * 1986-05-19 1988-03-15 S. C. Johnson & Son Inc. Anti-seating valve cup
US4752020A (en) * 1986-05-07 1988-06-21 Franz Grueter Pressurized dispensing container
US4997420A (en) * 1989-12-28 1991-03-05 Lefevre Robert J Portable drug delivery device including pump with tapered barrel
US5100389A (en) * 1988-06-21 1992-03-31 Vaillancourt Vincent L Ambulatory infusion pump
US5127556A (en) * 1991-07-17 1992-07-07 United States Can Company Low mass piston system for necked-in aerosol cans
US5133701A (en) * 1989-04-06 1992-07-28 Sang In Han Disposable pressure wound irrigation device
US20090283550A1 (en) * 2008-05-16 2009-11-19 Kimball James F Extreme Barrier Metal Piston and Container Utilizing Same
US20100213196A1 (en) * 2007-03-12 2010-08-26 Packaging Technology Participation S.A. Container for holding a fluid and an assembly of a container and an outlet
US11370597B2 (en) * 2018-05-18 2022-06-28 Silgan Dispensing Systems Le Treport Piston for a reservoir of a dispenser of a fluid product without air intake

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PH23185A (en) * 1983-06-13 1989-05-29 Scheindel Ass Inc Pressure operated dispensing container
DE3815327C2 (de) * 1988-05-05 1996-11-07 Rathor Ag Vorrichtung zum Verarbeiten des Substrates von Druckdosen, insbesondere von Polyurethanschäumen
GB8903826D0 (en) * 1989-02-20 1989-04-05 Sandia Investments Sa Packages for liquids
DE102012203277A1 (de) * 2012-03-01 2013-09-05 Mall + Herlan Gmbh Selbstentleerende Verpackung und Vorrichtung und Verfahren zu ihrer Herstellung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1764968A (en) * 1927-11-17 1930-06-17 Bayard W Mendenhall Grease-dispensing container
US2293579A (en) * 1939-08-19 1942-08-18 James R Vandivier Embalming apparatus
US2329917A (en) * 1941-09-08 1943-09-21 Iodent Chemical Company Dispensing device
US2992052A (en) * 1959-12-09 1961-07-11 John Charles R De Self sealing piston
US3042268A (en) * 1959-04-10 1962-07-03 Pyles Ind Inc Sealant gun
US3097768A (en) * 1960-01-11 1963-07-16 Aerojet General Co Fluid storage vessel
US3103957A (en) * 1962-02-16 1963-09-17 Drew Chem Corp Packaging method for pressurized dispensers
US3132570A (en) * 1960-10-18 1964-05-12 American Can Co Piston construction for an aerosol container
US3179309A (en) * 1960-11-28 1965-04-20 Procter & Gamble Tape valve for pressurized containers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1132570A (en) * 1912-05-29 1915-03-23 Robert E Fivey Flush-valve.
DE677268C (de) * 1932-09-24 1939-06-22 Carobronze Roehrenwerk Ges M B Kolbendichtung, bei der von den beiden aufeinandergleitenden Teilen der eine aus Bronze und der andere aus Stahl besteht
FR848954A (fr) * 1938-07-20 1939-11-09 Appareil extincteur
US2410405A (en) * 1945-01-01 1946-11-05 Richard T Cornelius Piston
US2895650A (en) * 1956-06-14 1959-07-21 Ass For Physiologic Res Inc Dispenser for materials in liquid and semisolid states
US3022923A (en) * 1958-03-21 1962-02-27 American Can Co Dispensing container for viscous products
US3112846A (en) * 1959-12-21 1963-12-03 American Can Co Aerosol can package
FR1303812A (fr) * 1960-10-18 1962-09-14 American Can Co Récipient distributeur à pression pour produits visqueux
FR1343500A (fr) * 1961-01-13 1963-11-22 Midland Aerosols Ltd Perfectionnement aux distributeurs sous pression du type aérosol

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1764968A (en) * 1927-11-17 1930-06-17 Bayard W Mendenhall Grease-dispensing container
US2293579A (en) * 1939-08-19 1942-08-18 James R Vandivier Embalming apparatus
US2329917A (en) * 1941-09-08 1943-09-21 Iodent Chemical Company Dispensing device
US3042268A (en) * 1959-04-10 1962-07-03 Pyles Ind Inc Sealant gun
US2992052A (en) * 1959-12-09 1961-07-11 John Charles R De Self sealing piston
US3097768A (en) * 1960-01-11 1963-07-16 Aerojet General Co Fluid storage vessel
US3132570A (en) * 1960-10-18 1964-05-12 American Can Co Piston construction for an aerosol container
US3179309A (en) * 1960-11-28 1965-04-20 Procter & Gamble Tape valve for pressurized containers
US3103957A (en) * 1962-02-16 1963-09-17 Drew Chem Corp Packaging method for pressurized dispensers

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583491A (en) * 1969-01-30 1971-06-08 Serlachius Oy Portable fire extinguisher construction
US3613961A (en) * 1969-02-03 1971-10-19 Oreal Dispensing container
US3917124A (en) * 1972-04-13 1975-11-04 Oatey Co Follow plate for dispensing material
US3908512A (en) * 1972-07-12 1975-09-30 Bbc Brown Boveri & Cie Explosion gas operated piston-cylinder structure
US4577783A (en) * 1973-03-15 1986-03-25 Marson Corporation Dispenser
FR2331485A1 (fr) * 1975-11-13 1977-06-10 Johnson & Son Inc S C Procede et dispositif pour mettre sous pression un recipient-distributeur
US4045938A (en) * 1976-03-26 1977-09-06 Barrier Pressure Container, Inc. Method of filling barrier pressure container
US4271991A (en) * 1976-06-08 1981-06-09 Diamond George B Low pressure dispensing
DE2722265A1 (de) * 1976-06-08 1977-12-22 George Bernard Diamond Druckbehaelter zur aufnahme eines stoffes sowie eines treibmittels
US4154377A (en) * 1977-06-06 1979-05-15 Petrolube Corporation Grease supply cartridge for dispensing
US4152820A (en) * 1978-02-09 1979-05-08 Dorzok Leroy D Method of expanding shot tip
US4752020A (en) * 1986-05-07 1988-06-21 Franz Grueter Pressurized dispensing container
US4730752A (en) * 1986-05-19 1988-03-15 S. C. Johnson & Son Inc. Anti-seating valve cup
US4703875A (en) * 1986-07-24 1987-11-03 S. C. Johnson & Son, Inc. Low mass piston for aerosol container
US5100389A (en) * 1988-06-21 1992-03-31 Vaillancourt Vincent L Ambulatory infusion pump
US5133701A (en) * 1989-04-06 1992-07-28 Sang In Han Disposable pressure wound irrigation device
US4997420A (en) * 1989-12-28 1991-03-05 Lefevre Robert J Portable drug delivery device including pump with tapered barrel
US5127556A (en) * 1991-07-17 1992-07-07 United States Can Company Low mass piston system for necked-in aerosol cans
US20100213196A1 (en) * 2007-03-12 2010-08-26 Packaging Technology Participation S.A. Container for holding a fluid and an assembly of a container and an outlet
US8490819B2 (en) * 2007-03-12 2013-07-23 Packaging Technology Participation S.A. Container for holding a fluid and an assembly of a container and an outlet
US20090283550A1 (en) * 2008-05-16 2009-11-19 Kimball James F Extreme Barrier Metal Piston and Container Utilizing Same
US11370597B2 (en) * 2018-05-18 2022-06-28 Silgan Dispensing Systems Le Treport Piston for a reservoir of a dispenser of a fluid product without air intake

Also Published As

Publication number Publication date
DK117890B (da) 1970-06-08
NO117847B (US20110009641A1-20110113-C00116.png) 1969-09-29
ES309948A1 (es) 1965-06-16
GB1085341A (en) 1967-09-27
DE1450303B1 (de) 1970-06-04
NL130949C (US20110009641A1-20110113-C00116.png)
NL7005625A (US20110009641A1-20110113-C00116.png) 1970-08-25
BE659911A (US20110009641A1-20110113-C00116.png) 1965-06-16
NL6500567A (US20110009641A1-20110113-C00116.png) 1965-08-23

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