US3659755A - Automatic pressure relieving aerosol product - Google Patents

Automatic pressure relieving aerosol product Download PDF

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Publication number
US3659755A
US3659755A US15480A US3659755DA US3659755A US 3659755 A US3659755 A US 3659755A US 15480 A US15480 A US 15480A US 3659755D A US3659755D A US 3659755DA US 3659755 A US3659755 A US 3659755A
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US
United States
Prior art keywords
valve
pressure
container
actuator
cup
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
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US15480A
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English (en)
Inventor
Samuel Benjamin Prussin
Howard Clyde Tracy Jr
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.)
Dart Industries Inc
Original Assignee
Dart Industries Inc
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Filing date
Publication date
Application filed by Dart Industries Inc filed Critical Dart Industries Inc
Application granted granted Critical
Publication of US3659755A publication Critical patent/US3659755A/en
Anticipated expiration legal-status Critical
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    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/16—Actuating means
    • B65D83/20—Actuator caps

Definitions

  • ABSTRACT An automatic pressure relieving aerosol product and container having an actuator member held fixedly against outward movement with respect to the can, and a valve carrying member that will move the valve stem against the actuator in response to excess pressure. When such pressure is present in the can, the valve carrying member moves upwardly whereupon the valve is opened thereby relieving the pressure.
  • the actuator is of the type that will normally be moved with hand pressure to open the valve, thereby permitting the aerosol container to be operated in the usual manner under normal conditions.
  • This invention generally relates to pressurized products and containers. More specifically, it relates to an aerosol product that will automatically reduce excess pressure conditions in the container.
  • Aerosol products usually include various volatile materials such as propellants, solvents, or compositions that will chemically react, which render them dangerous when exposed to certain conditions. Because conditions such as, for example, heat or subatmospheric pressures may cause excess pressures to be created inside the aerosol container, there is a possibility that these products may either explode or become missiles if the container is ruptured. For this reason, a warning not to incinerate is commonly printed on commercial aerosol products.
  • a further object of the invention is the provision of an automatic pressure relieving aerosol container that is safe, economical, and reliable.
  • an automatic pressure relieving aerosol container which includes a container and pressure responsive member closuring said container.
  • the pressure responsive member moves upwardly when pressure in excess of the normal and safe operating range is applied thereto.
  • the aerosol valve which is provided with an operating means, is attached to the pressure responsive means and communicates with the interior of the container.
  • An actuator means is positioned to operate the valve by contact with the valve operating means.
  • the actuator means is fixed to the container in such a manner that the operating means is forced into contact with the actuator when excess pressure forces the pressure responsive member upwardly, thereby automatically opening the valve.
  • the pressure responsive member is formed as a conventional valve cup of material and dimensions such that it will move upwardly upon application of excess pressure inside the container.
  • the cup can be formed so that it will return to its normal position when the excess pressure is relieved thereby shutting off the valve and rendering the aerosol product reusable even after the excess pressure is relieved.
  • the cup member can have a so-called bi-stable toggle action whereby the excess pressure will invert the cup outwardly from a normal concave position to a convex position.
  • the cup can also be formed of material of a gauge and/or configuration such that excess pressure will deform the cup upwardly beyond the elastic limit of the material and thus maintain the valve permanently open, once it has been actuated by such pressure.
  • FIG. 1 is a side elevation view of an aerosol container according to the invention, utilizing a foam actuator, with parts thereof broken away for convenience of illustration;
  • FIG. 2 is a side elevation view in cross section taken on line 2-2 of FIG. 1 showing the aerosol cup and valve with the cup in a normal position;
  • FIG. 3 is a view similar to FIG. 2 showing the relationship of the components as they would be when there is excess pressure in the container.
  • FIG. 4 is a view similar to FIG. 3 showing the invention as utilized with a spray actuator.
  • FIG. 5 is a side elevation view partially in cross section showing an alternative embodiment of the invention.
  • an aerosol container 10 of substantially conventional construction is provided with a pressure responsive valve cup 11 according to the invention.
  • the cup 11 supports a valve 12.
  • Dip tube 13 is attached to a lower portion 14 of the valve.
  • the clip tube 13 has an open end 15 in the nonnally lower end of container 10.
  • the container I0 holds materials with a pressurizing fluid therein such that the pressurizing fluid will drive the liquid materials up the dip tube 13 when valve 12 is opened.
  • the aerosol product according to the invention is provided with an actuator 16.
  • the actuator is composed of an annular base portion 17 and a movable actuator portion 18.
  • a valve operating means formed as valve stem 19.
  • the valve stem 19 opens the valve and material from the aerosol container is drawn up dip tube 13 through valve 14, actuator stem 19 and out discharge passage 20.
  • the base portion 17 of the actuator is secured to container 10 by means of flange 21 having undercut portions 22 which fit beneath the rolled rim 23 of container 10.
  • the base portion is securely fixed against longitudinal displacement outwardly of container 10.
  • actuator portion 18 is fixed against outward movement from container 10 by means of internal flange 24 which is provided with an undercut 25, the latter being positioned under inwardly extending rib 26 of base portion 17.
  • the pressure responsive member in its preferred form can be formed as a valve cup 11 as shown in FIGS. 1, 2 and 3 consists of a rolled shoulder portion 28 which securely fastens the cup to the rolled rim 23 of container 10.
  • the cup in the embodiment shown in FIG. 2 has a downwardly directed side wall 29, a downwardly and inwardly directed connecting portion 30, and an upwardly directed portion 31 connecting with a valve holding portion 32.
  • the cup When excessive pressure is present in the container, the cup will deflect from the normal position as shown in FIG. 2 to a position such as'that shown in FIG. 3. Because actuator base 17 and actuator portion 18 are fixed against upward movement relative to container 10, the cup deflection will force valve 14 and stem 19 up against actuator portion 18 whereby the valve will be in opened position.
  • Material in container 10 will be drawn up dip tube 13 through valve 14, valve stem 19, and out dispensing conduit 20 as shown by the arrow in FIG. 3. The flow of material will reduce the pressure in the container and render such safe thereafter.
  • Spacing 34 between stem 19 and actuator 18 can be provided as shown in FIG. 2 to provide control in the automatic pressure relief sequence by causing a greater pressure to move stem 19 farther before it will contact actuator 18.
  • Cup 11 can be formed of materials and have dimensions such that the deflection as shown in FIGS. 2 and 3 will be within the elastic limit of material. Thus, once the pressure is relieved in the container the cup will return to its normal position and the container will be reusable for the dispensing of the contents therein.
  • cup 11 can also be formed of a material such that permanent deformation will occur when the cup is in the position shown as FIG. 3. That is, the cup will be deformed by the excess pressure beyond its elastic limit.
  • a still further embodiment of the invention is that shown schematically in FIG. 5 where a cup member 34 is shown having a configuration such that it will have a bi-stable toggle action. When excess pressure is applied to the under side 35 of the cup 34, it will be inverted outwardly forcing the cup over centers" to a convex position where it will remain until repositioned to its normal attitude by the application of external pressure.
  • Cup 11 can be made from various materials.
  • Stainless steel is highly advantageous in that it will not be corroded by the materials in aerosol container 10, and at the same time it is sufficiently flexible to function as the pressure responsive member according to the invention.
  • Spring steel, tin-plated steel, aluminum, and in some cases plastic, may also be advantageously used.
  • actuator base portion 17 and actuator portion 18 are of materials and dimensions such that they will be fixed against outward movement. As previously noted, this is required in order that stem 19 be pushed down when valve 12 is pushed upwardly.
  • Materials suitable for use in the fabrication of the actuator are the presently preferred relatively rigid thermoplastic materials such as linear polyethylene or polypropylene.
  • release pressure for the product can be rather accurately controlled.
  • Various valve cups of different materials and configurations can be used to provide aerosol products with different release pressures at which the valve will be opened. Because of the accurate pressure relief control that can be obtained, this invention permits the use of substantially thinner materials. This is possible because the same degree of safety does not have to be built into the aerosol container that was previously required for those containers with either less accurate or no pressure relieving systems. Substantial economic advantages can, of course, be realized by reducing the thickness and quantity of material in mass-produced items such as aerosol products.
  • Aerosol valves of the type shown in the drawings commonly have a full-throw travel of from 0.035 in. to 0.050 in. With this invention, as little as 0.005 in. movement upward of the valve cup will create partial openings in the valve.
  • EXAMPLE I An aerosol container similar to that shown in FIG. 2 supplied with a cup having a 1% in. diameter and being fabricated from 0.01 l in. tin-coated steel plate of substantially the configuration shown in FIG. 2 and 3 was tested at various pressures to determine the height increase of the center portion of the cup with respect to the rim thereof. in this test, a can was pressurized in increments according to column A below. The cup pedestal height according to column B" below was measured as the distance above the rim at each of the pressure increments.
  • cup pedestal height was shown to have increased 0.178 in. at 160 psi, a sufficient distance to actuate any of the commonly used aerosol valves.
  • valves and cu of the same type that were used in exam le 1 were provide with clearances as shown in the table be ow.
  • the pressure at which the valve will be actuated to provide either an initial pressure reducing leak or a wide open valve can be controlled by controlling the initial clearance.
  • An automatic pressure relieving aerosol container comprising:
  • a valve provided with an operating means for opening said valve
  • a pressure responsive valve cup member holding said valve in a predetermined position, said pressure responsive member being adapted to move said valve upwardly upon application of excess internal pressure in said container;
  • actuator means fixed against outward movement and movable inwardly positioned on said container to operate said valve by contact with said operating means, said valve actuator normally permitting said valve to be in an unoperated position, said actuator means being positioned on said container in a position to open said valve when excess pressure causes the pressure responsive member to move the valve upwardly and bring said valve operating means into contact with said actuator means whereby excess pressure will be automatically relieved in said container.
  • valve cup is of the type adapted to return to a normal position when excess internal pressure is relieved.
  • valve cup is of the type that will be permanently deformed when excessive pressure is applied thereto.
  • valve cup is of the type that has a bi-stable toggle action.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US15480A 1970-03-02 1970-03-02 Automatic pressure relieving aerosol product Expired - Lifetime US3659755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1548070A 1970-03-02 1970-03-02

Publications (1)

Publication Number Publication Date
US3659755A true US3659755A (en) 1972-05-02

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ID=21771648

Family Applications (1)

Application Number Title Priority Date Filing Date
US15480A Expired - Lifetime US3659755A (en) 1970-03-02 1970-03-02 Automatic pressure relieving aerosol product

Country Status (8)

Country Link
US (1) US3659755A (enExample)
BE (1) BE763604A (enExample)
CA (1) CA924687A (enExample)
CH (1) CH536764A (enExample)
DE (1) DE2108906A1 (enExample)
FR (1) FR2083962A5 (enExample)
GB (1) GB1316703A (enExample)
NL (1) NL151312B (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784064A (en) * 1971-06-22 1974-01-08 Alusuisse Pressurized fluid dispensing devices
DE3544924A1 (de) * 1985-12-19 1987-07-02 Euscher Gmbh & Co Ewald Ventilteller zum tragen von aerosolventilen
US4722461A (en) * 1984-03-23 1988-02-02 Symmank William D Pressure relief liquid spray dispenser apparatus
US4993602A (en) * 1989-06-07 1991-02-19 Prd, Inc. Pressure relief device for a pressurized container
US5032317A (en) * 1988-03-25 1991-07-16 E. I. Du Pont De Nemours And Company Process of inhibiting corrosion
FR2768703A1 (fr) * 1997-09-22 1999-03-26 Bespak Plc Perfectionnements a ou lies a des dispositifs distributeurs pressurises
DE19850146A1 (de) * 1998-10-30 2000-05-11 Coster Tecnologie Speciali Spa Ventil für die Abgabe von unter Druck stehenden Flüssigkeiten
US6907690B1 (en) * 2003-04-25 2005-06-21 Jimmie L. Stallings Environmentally friendly insect eradication method and apparatus
WO2005115876A1 (en) 2004-05-26 2005-12-08 Peter Nardone Aerosol container with actuator secured to valve stem
US20110201450A1 (en) * 2000-04-18 2011-08-18 Soracco Peter L Metal wood club with improved hitting face

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT963878B (it) * 1972-08-10 1974-01-21 Coster Tecnologie Speciali Spa Cappuccio erogatore con tasto particolarmente per bombole di aereosol
FR2307716A1 (fr) * 1975-04-16 1976-11-12 Valois Sa Poussoir interchangeable pour valve aerosol
IT8221182V0 (it) * 1982-03-18 1982-03-18 Sar Spa Gruppo valvola e cappuccio di erogazione di sostanze fluide sotto pressione con sigillo di garanzia.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757964A (en) * 1953-07-16 1956-08-07 Bridgeport Brass Co High pressure fluid dispensing device
GB913103A (en) * 1959-07-08 1962-12-19 Speciality Valves Ltd Improvements in or relating to pressurised dispensing containers
US3161324A (en) * 1961-07-20 1964-12-15 Pneumo Dynamics Corp Dispensing container and pressurizer therefor
US3214061A (en) * 1963-07-01 1965-10-26 Lindley E Mills Dispenser for carbonated beverages

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757964A (en) * 1953-07-16 1956-08-07 Bridgeport Brass Co High pressure fluid dispensing device
GB913103A (en) * 1959-07-08 1962-12-19 Speciality Valves Ltd Improvements in or relating to pressurised dispensing containers
US3161324A (en) * 1961-07-20 1964-12-15 Pneumo Dynamics Corp Dispensing container and pressurizer therefor
US3214061A (en) * 1963-07-01 1965-10-26 Lindley E Mills Dispenser for carbonated beverages

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784064A (en) * 1971-06-22 1974-01-08 Alusuisse Pressurized fluid dispensing devices
US4722461A (en) * 1984-03-23 1988-02-02 Symmank William D Pressure relief liquid spray dispenser apparatus
DE3544924A1 (de) * 1985-12-19 1987-07-02 Euscher Gmbh & Co Ewald Ventilteller zum tragen von aerosolventilen
US5032317A (en) * 1988-03-25 1991-07-16 E. I. Du Pont De Nemours And Company Process of inhibiting corrosion
US4993602A (en) * 1989-06-07 1991-02-19 Prd, Inc. Pressure relief device for a pressurized container
FR2768703A1 (fr) * 1997-09-22 1999-03-26 Bespak Plc Perfectionnements a ou lies a des dispositifs distributeurs pressurises
DE19850146A1 (de) * 1998-10-30 2000-05-11 Coster Tecnologie Speciali Spa Ventil für die Abgabe von unter Druck stehenden Flüssigkeiten
US20110201450A1 (en) * 2000-04-18 2011-08-18 Soracco Peter L Metal wood club with improved hitting face
US6907690B1 (en) * 2003-04-25 2005-06-21 Jimmie L. Stallings Environmentally friendly insect eradication method and apparatus
WO2005115876A1 (en) 2004-05-26 2005-12-08 Peter Nardone Aerosol container with actuator secured to valve stem
EA010194B1 (ru) * 2004-05-26 2008-06-30 Питер Нардоун Аэрозольный контейнер с приводным механизмом, прикрепленным к штоку клапана
US20080230559A1 (en) * 2004-05-26 2008-09-25 Peter Nardone Aerosol Container with Actuator Secured to Valve Stem
AU2005247517B2 (en) * 2004-05-26 2009-01-08 Peter Nardone Aerosol container with actuator secured to valve stem
CN1997570B (zh) * 2004-05-26 2011-08-31 彼得·纳顿 具有固定到阀杆的制动器的气雾剂容器

Also Published As

Publication number Publication date
NL7102667A (enExample) 1971-09-06
DE2108906A1 (de) 1971-09-30
GB1316703A (en) 1973-05-16
NL151312B (nl) 1976-11-15
CA924687A (en) 1973-04-17
FR2083962A5 (enExample) 1971-12-17
BE763604A (fr) 1971-09-01
CH536764A (de) 1973-05-15

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