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Publication numberUS3158298 A
Publication typeGrant
Publication dateNov 24, 1964
Filing dateSep 20, 1962
Priority dateOct 17, 1961
Publication numberUS 3158298 A, US 3158298A, US-A-3158298, US3158298 A, US3158298A
InventorsJoseph Briechle
Original AssigneeScovill Manufacturing Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Aerosol valve-fast pressure fill type
US 3158298 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

J. BRIECHLE AEROSOL VALVE FAST PRESSURE FILL T'YPE Filed Sept. 20, 1962 2 Sheets-Sheet 1 3, mm \\\\\v W m mm s 7. W lv a w a w 3 P4 4 a wi w n. I .r w E Iv BY mflwmwm ATTORNEYS.

3; ES w Nov. 24, 1964 I J. BRIECHLE 3,158,298

AEROSOL VALVE FAST PRESSURE FILL TYPE Filed Sept. 20, 1962 2 Sheets-Sheet 2 FIG. 6.

ENTOR JOS BRIECHLE ATTORNEYS.

United States Patent 3,153,298 AERGSKEL VALVE-FAST PRESURJE FlLL TYPE loseph Briechle, New Qauaau, Coma, assignor to Scovill Manufacturing Qornpany, Waterbury, Quinn, :1 corporation of {Jonnecticut Filed Sept. 26, 1962, Ser. No. 225,387 6 Claims. (Q. 222-4594) The present invention relates to an aerosol valve and to such valve for use in combination with a container for a pressurized fluid which is adapted to be dispensed in the form of a spray mist or as a foam depending upon the container contents.

In devices of the character set forth the containers usually have an open top to which the aerosol valve is attached either prior to or after the propellant, usually a low boiling point fluid, is charged into the container. Where the propellant is charged into the container prior to attaching the valve, the procedure is referred to as cold filling which requires the operation to be carried out under refrigeration i.e., at a temperature below the boiling point of the propellant. Where the propellant is charged into the container after mounting the valve thereto, the propellant in fluid form under high pressure is forced into the container usually through and/ or around a hollow valve stem upon unseating the valve and this procedure is referred to as pressure filling. Due to the small dimensional limitations of the valve stem and the passages therein pressure filing has been heretofore relatively slow. To increase the pressure filling rate special types of valves have been devised for charging the propellant into the container either through the valve chamber in which the valve is mounted or around said chamber housing through a space or passages between the valve chamber housing and the container closure or mounting cap member. These valves have not proved to be entirely satisfactory because either of their higher cost than conventional valves or of imperfect operation under commercial pressure filling conditions.

An object of the present invention is to provide an improved aerosol valve adapted for use in charging and discharging aerosol products from containers which obviates the objections to prior valves.

A further object of the invention is to provide an improved valve for aerosol containers in which the pressure fill passages are independent of the discharge passages.

A further object of the invention is to simplify the construction of valves for aerosol dispensing which can be completely assembled by the valve manufacturer and used as assembled for either cold filling or pressure filling of aerosol containers with the propellant medium.

A still further object of the invention is to provide a valve assembly as set forth in the preceding paragraph which will be simple in construction, efficient in operation and which can be manufactured and sold competitively with conventional cold filling valves.

The foregoing and other objects or the invention, not specifically enumerated, and the novel combination and relationship of parts, will be readily understood from the detafied description which follows when considered in connection with the accompanying drawing wherein:

H6. 1 shows an embodiment of the invention in elevation with the cap member and the container upon which it is mounted in diametrical section.

FIG. 2 shows a diametrical sectional view of the valve assembly of H6. 1 on a greatly enlarged scale.

FIG. 3 is a view similar to FIG. 2 showing the relationship of the valve assembly parts during pressure filling of the container with a fiuid propellant.

FIG. 4 shows a top plan View of the tubular housing or spring cup.

PEG. 5 shows a transverse section taken along the plane of the line 5-5 of FIG. 4.

FIG. 6 is a diametrical section through the sealing washer or valve seal.

Referring to the drawings, the invention may be said to consist of an aerosol valve assembly ll? adapted to be mounted in the open end of a container 11 and provide a closure therefor.

The valve assembly in consists of a tubular housing or valve and spring cup 12 having a chamber 13, an elastomeric sealing Washer or valve seal 14, a discharge valve member 5, a spring 16, and a container closure or cap member 17.

The container ll may be of any desired shape and construction provided it has an open top adapted to be closed by the valve assembly 16.

The tubular housing 12 is formed at its upper or outer end with a peripheral flange 1% having chamfered or rounded exterior corners l8 and the bore of chamber 13 has different internal diameters l9 and 20 adjacent its outer end and at its inner end is formed with an axially projecting nipple 21. Between the bore diameters l9 and 2% there is formed a shoulder 22 and the outer portion of the bore 19 is tapered outwardly to its top as shown at 23 whereas the housing is formed with circumferentially spaced radial slots, grooves or flutes 24 providing ribs 24' which communicate with longitudinal slots, grooves or flutes 25 providing ribs 25 formed in the peripheral flange 18. The inner Wall of the housing 12 having the diameter Zll is formed with a plurality of circumferentially spaced longitudinally extending ribs 26 i which are of increasing radial thickness as they extend inwardly from a location below the shoulder 22 to the base of the chamber. Alternate ribs 26 at their inner ends continue across the base 27 of the chamber to a reentrant nipple 23 to provide a seating surface for the spring 16. The tubular housing may be formed of any suitable material, preferably a synthetic resin which may be molded, such as nylon or the like, which is inert to substances intended to be discharged from the container.

The sealing washer or valve seal 14 is preferably flat and may be formed of any elastomeric material which is not adversely affected by the substances intended to be discharged from the container and preferably is formed with a central hole or perforation lda the wall or"- which tapers outwardly toward the top face of the washer and has an outer peripheral Wall l ib which is concave in radial section as best shown in HG. 6. The outer diameter of the washer is such as to be normally supported on the tapered portion 23 of the bore portion l? to provide a fluid tight seal therewith and be moved inwardly into the bore portion 1? under fluid pressure applied externally to its outer surface to seat on the shoulder 22, as will be hereinafter more fully explained.

The valve member 15 has a solid or closed inner end 29 formed with an inwardly extending axial projection 2% and an outwardly extending hollow cylindrical stem 30 which is open at its top and is slidable in the opening 14a of the washer 14 with a fluid tight fit, said closed end of the valve having an outwardly extending annular flange 3i spaced radially from the lower end of the tubular stern and providing therewith an annular channel 32 and the inner end of the tubular stem 3% is formed with an orifice 359a communicating with said channel. Like the housing 12, the valve member 15 may be formed of any suitable material, such as nylon or other synthetic resin, which is inert to the substances to be discharged from the container.

The container closure or cap member 17 is of cup shape form and has a centrally re-entrant tubular part or pedestal 33 and an outer peripheral bead or flange 34 for attachment or" the valve assembly to the container 11. The tubular part of pedestal 33 surrounds the periphery of the flange 13 and has its upper end formed as an inwardly directed top flange 35 overlying the sealing washer l4 and terminating in axial spaced relation to the tubular stem as shown at 36. The inner end of said tubular part or pedestal 33 is staked inwardly at circumferentially spaced locations to engage the lower corner 18 of the flange 13 as shown at 35:: to support the valve parts and to hold the washer and housing in fluid tight engagement. The staking is preferably of less depth than the groves 25 or ribs 25 to insure maximum passage of fluid propellant when charging the container with the propellant during pressure filling the container.

As is conventional, there is frictionally mounted on the outer end of the tubular stem 3% to be movable therewith an operating cap or button 37 of generally cylindrical form of smaller diameter than the pedestal 33, the button having a discharge opening 37a connecting with a passage 38 which in turn communicates with the bore in the hollow stem 30. Also, as is conventional, a dip tube 39 is attached to the inwardly extending nipple 21.

The characteristic differences between the aerosol valve assembly thus far described and prior constructions are:

(l) The tubular housing or spring cup 12 is formed at its upper or outer end with a flange having transverse groves or flutes 2- 4 which communicate with longitudinaily extending grooves or flutes 25 which flutes in conjunction with the contiguous parts of the cap member provide unobstructed passages which open into the container; (2) the sealing washer 14 is of novel form and is normally supported on an upwardly tapered surface as shown at 23 within the bore or chamber 19 at the outer end of the tubular housing and is held in unclamped pressure sealing relation against the underside of the top flange of the cap member to obturate the passages through the grooves 24 and in axially spaced relation to the shoulder 22 in the housing, in relation to which is bodily movable the sealing washer; (3) that because of said mounting and relationship of parts the washer does not break its sealing engagement with either the tubular housing or the valve stem during its bodily movement or during the longitudinal or tilting movement of the valve stem permitted by the opening 36 in the top flange 35; and (4) the overall diameter of the cap or button is smaller than the diameter of the top flange 35.

By virtue of the aforementioned characteristic differences the valve assembly as a completely assembled unit may be attached to a container 11 after the active material to be dispensed therefrom has been placed therein and the fluid propellant then charged into the container by the pressure filling method without removing the operating button as ilustrated in FIG. 3 wherein a pressure filling head 40 of larger diameter than the pedestal 33 and having a packing ring 41, held onto the filling head 30 in any suitable manner, such as by a flanged sleeve 4-2, is positioned over said pedestal to make a fluid tight seal therewith and a low boiling point propellant such as Freon under high pressure is applied to such filling head. Part of the propellant will initially enter through the dispensing opening 37a in the button, pass through the valve stem 30 and orifice 30a to exert an opening force on the valve member 15 to move said valve into abutting engagement with the shoulders 43 provided at the top of the ribs 26 and permit a limited quantity of propellant to enter the valve chamber 13 and from there through the dip tube 40 into the container. Simultaneously with the flow of the fluid propellant through the valve stem 3t), the propellant will flow through the annular space 36 to act against the exposed inner or central portion of the washer 14 and operate to axially move the washer bodily within the tubular housing out of contact with the top flange 35 and onto the shoulder 22 thus exposing the grooves 24 to provide passage for the propellant therethrough and through the grooves 25 into the container 11 as indicated by the arrows in FIG. 3. During this action the fluid tight seal between the washer 12 with both the bore 19 of the housing 12 and the outer wall of the valve stem 30 is maintained so that after the initial slight admission of fluid under pressure through the valve stem 39 and valve member 15 into the container through the dip tube 39 has taken place the washer will seat on the sealing surface on the top of the flange 31 and on the shoulder 22 and all subsequent fluid propellant being charged to the container will follow the paths of the arrows in FIG. 3 and not pass through the tubular housing. The rate of pressure filling will therefore not be limited to the cross-sectional area of the dip tube. When the container has been pressurized and the pressure valve head removed, the valve member 15 will move the washer 14, under the force of the spring 15 and the internal propellant pressure within the container, to its normal closed position as shown in FIG. 2. Since only the propellant is pressure charged into the container any residue of the propellant left on the button or the cap member will evaporate therefrom almost instantly.

By virtue of the annular space 36 between the inner periphery of the cap flange 35 and the outer wall of the valve stem 30, it will be apparent that when manual pressure is applied to the operating button 37 against the forces of the spring 16 and the gas pressure within the container the applied pressure will either depress or tilt or simultaneously depress and tilt the valve member 15 to move it wholly or partially out of sealing engagement with the washer 14 to permit the pressurized contents which normally fill the chamber 13 to be discharged through the orifice Stla in the button 37.

In the foregoing description of the invention, the valve assembly may be said to consist of a discharge valve and a charging valve; the latter comprising all the essential parts of the tilt type discharge valve and the improvements which reside in that the cap member and the tubular housing at contiguous portions of their top and side wall are formed to provide connecting fluid passages therebetween which are normally closed by the sealing washer which is axially movable bodily within the tubular housing out of contact with the inwardly extending flange overlying the washer by fluid pressure applied exteriorly against the central portion of the washer externally of the valve stem through the central opening in the top flange and provide free access for such applied fluid from said central opening to said connecting fluid passages to such fluid under pressure for admission thereof to the container upon which the valve assembly is mounted.

Although the foregoing description in conjunction with the accompanying drawings describes a preferred embodiment of the invention it is to be understood that changes in details of construction and arrangement of parts may be resorted to within the range of mechanical and engineering skill without departing from the spirit of the invention as hereinafter claimed.

What I claim is:

1. A completely assembled aerosol valve unit, for closing the open top of a container which may be thereupon pressurized or discharged through said unit, which comprises a container closure cap member supporting a tubular housing having therein a valve chamber of different diameters, an elastomeric sealing washer seating within the chamber portion of largest diameter and providing a fluid-tight seal with the inner wall of said chamber portion, a valve member in said chamber having a tubular stem extending upwardly through and slidable in the hole in the washer with a fluid-tight tit and a spring normally biasing the valve into closing position against said washer, said cap member having an inwardly directed top flange with a central opening larger than the valve stem overlying and exposing the central portion of the washer and an axial tubular portion surrounding said housing and said washer and providing with the outer peripheries of said housing and said washer communicating fluid pas sages, the improvements residing in that the chamber portion of largest diameter has an axial dimension greater than the axial thickness of the washer, that the washer is slidabiy mounted in said chamber portion in fluid-tight engagement with both the wall of said chamber portion and the tubular valve stem and is normally held in unclamped fluid-tight engagement with the underside of the top flange of the cap member by the spring biased valve member and seals off communication between said central opening in the top flange of the cap member and the fluid passages, whereby when fluid under pressure is applied to the exposed central portion of the washer externally of the valve stem through the central opening in the top flange of the cap member, the washer will bodily move inwardly out of sealing engagement with the inwardly extending top flange and provide free accessfor such applied fiuid from said central opening in the flange to the communicating passages while maintaining the fluid-tight sealing engagement between the tubular housing and the tubular valve stern.

2. An aerosol valve unit according to claim 1 wherein the communicating passages between the axial portion of the cap member and the outer peripheries of the said housing and said washer are provided by cireumferentially spaced grooves extending across the outer end and longitudinally of the outer wall of the housing.

3. An aerosol valve unit according to claim 1 wherein the communicating passages between the axial portion of the cap member and the outer peripheries of the said housing and said washer are provided by circumferentiaily spaced grooves extending across the outer end and longitudinally of the outer wall of the housing, the chamber portion of largest diameter has an outwardly tapered or frusto-conical portion, inwardly of which there is a shoulder, that the washer is normally supported on said tapered portion in axially spaced relation to said shoulder and will move bodily toward said shoulder upon the application of said external fluid pressure.

4. An aerosol valve assembly according to claim 1, wherein the sealing washer has a central hole which tapers radially outwardly and an outer periphery which is concave in axial section.

5. An aerosol valve unit according to claim 3, wherein the axial distance between the top flange of the cap memher and the shoulder in the housing chamber is such that upon inward movement of the washer in response to applied external fluid pressure, the washer will seat on said shoulder and will return to its normal seating and sealing engagement with the top flange upon withdrawal of said applied pressure.

6. In the combination of a pressurizeable container and a completely assembled aerosol valve unit therefor having a discharging valve for the container contents and a charging valve for pressurizing the container, said valve unit being mounted in an opening in the container and comprising a closure cap for said opening supporting a tubular housing having therein a valve chamber of diiterent diameters, an elastomeric sealing washer seating within the chamber portion of largest diameter and providing a fluid-tight seal with the inner wall of said chamber por with a central opening larger than the valve stem over-v lying and exposing the central portion of the washer and an axial tubular portion surrounding said housing and said washer and providing with the outer peripheries of i said housing and said washer communicating fluid passages, inward or tilting movement of the valve stem establishing open communication between the valve chamber and the ambient atmosphere; the charging valve for introducing a fluid propellant into the container comprising the aforementioned tubular housing, the elastomeric sealing washer and the top flange of the cap member; the improvements residing in that the communicating passages between said axial portion of the cap member and the outer peripheries of said housing and said washer are provided by circumferentially spaced grooves extending across the outer end and longitudinally of the outer wall of the housing, that the chamber portion of largest diameter has an axial dimension greater than the axial thickness of the washer, that the washer is slidably mounted in said chamber portion in fluid-tight engagement with both the wall'of said chamber portion and the tubular valve stem and is normally held in unclamped fluid-tight engagement with the underside of the top flange of the cap member by the spring biased valve member and seals ofi communication between said central opening in the top flange of the cap member and the circumferentially spaced grooves extending across the outer end of the 7 housing, whereby when fluid under pressure is applied to the exposed central portion of the washer externally of the valve stem through the central opening in the top flange of the cap member, the washer will bodily move inwardly out or" sealing engagement with the inwardly extending top flange and provide free access for such applied fluid from said central opening in the flange to the spaced grooves and through said grooves into the container,-

while maintaining the fluid-tight sealing engagement between the tubular housing and the tubular valve stem.

References Cited by the Examiner UNITED STATES PATENTS RAPHAEL M. LUPO, Primary Examiner.

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3266678 *Oct 13, 1964Aug 16, 1966Green Edward HSpray valve for protruding stem
US3292666 *Oct 8, 1964Dec 20, 1966Avon Prod IncAerosol valve assembly
US3319669 *Aug 15, 1966May 16, 1967Robert Henry AbplanalpAerosol dispenser
US3375957 *Jun 8, 1966Apr 2, 1968Aerosol Res CompanyPressure fillable aerosol valve assembly
US3404863 *Jun 24, 1966Oct 8, 1968Derek B. GreenAerosol valve assembly
US3416770 *Jan 11, 1967Dec 17, 1968Scovill Manufacturing CoAerosol valve unit
US3441177 *Jan 30, 1967Apr 29, 1969Scovill Manufacturing CoOne-shot valve assembly for aerosol container
US3490656 *May 21, 1968Jan 20, 1970Taschner Kenneth ACompressed gas-type liquid dispenser
US3589571 *Jul 18, 1969Jun 29, 1971Scovill Manufacturing CoAerosol valves
US4135648 *Oct 26, 1977Jan 23, 1979Summit Packaging Systems, Inc.Metering valve for pressurized dispensing containers
US4271875 *Aug 21, 1979Jun 9, 1981Philip MeshbergDispenser adapted for fast pressure filling
US4836253 *Mar 3, 1987Jun 6, 1989Nye Norman HContainer valve and filling means
US5213231 *Feb 20, 1991May 25, 1993Precision Valve CorporationAerosol container closure
US5553755 *Jun 9, 1995Sep 10, 1996Summit Packaging Systems, Inc.Whipped cream dispenser
US5881929 *Apr 25, 1997Mar 16, 1999Summit Packaging Systems, Inc.Plastic coated mounting cup for spray button seal
US6152190 *Apr 15, 1999Nov 28, 2000Summit Packaging Systems, Inc.Actuator with resilient annular skirt for improved seal during button-on-filling process
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US6607106Jul 9, 2001Aug 19, 2003Conagra Dairy Food Research CenterAerosol valve
US6832704Jun 17, 2002Dec 21, 2004Summit Packaging Systems, Inc.Metering valve for aerosol container
US6978916Jun 4, 2003Dec 27, 2005Summit Packaging Systems, Inc.Metering valve for aerosol container
US7387140 *Sep 1, 2004Jun 17, 2008Michael BrunnMethod and system for the quick refill of an irritant dispenser
US7959041Aug 26, 2008Jun 14, 2011S. C. Johnson & Son, Inc.Valve assembly for pressurized dispensers
US7967035Oct 31, 2007Jun 28, 2011Michael BrunnMethod and system for the quick refill of an irritant dispenser
Classifications
U.S. Classification222/402.16, 222/518, 239/579, 251/353, 222/402.24, 141/21, 222/542, 215/315, 141/20
International ClassificationB65D83/14, B65B31/00
Cooperative ClassificationB65D83/425, B65B31/003
European ClassificationB65D83/42B, B65B31/00A