US3586216A - Improved aerosol valve with gasket deformation to enhance sealing - Google Patents

Improved aerosol valve with gasket deformation to enhance sealing Download PDF

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Publication number
US3586216A
US3586216A US772704A US3586216DA US3586216A US 3586216 A US3586216 A US 3586216A US 772704 A US772704 A US 772704A US 3586216D A US3586216D A US 3586216DA US 3586216 A US3586216 A US 3586216A
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US
United States
Prior art keywords
valve stem
valve
gasket
valve assembly
stem
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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US772704A
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English (en)
Inventor
Gilbert S Jordan
Norman Usen
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Glad Products Co
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Union Carbide Corp
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Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: STP CORPORATION, A CORP. OF DE.,, UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,, UNION CARBIDE CORPORATION, A CORP.,, UNION CARBIDE EUROPE S.A., A SWISS CORP.
Assigned to FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DANBURY, CT 06817 A CORP OF DE reassignment FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DANBURY, CT 06817 A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE CORPORATION, A CORP OF NY
Assigned to UNION CARBIDE CORPORATION, reassignment UNION CARBIDE CORPORATION, RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MORGAN BANK (DELAWARE) AS COLLATERAL AGENT
Assigned to MANUFACTURERS HANOVER TRUST COMPANY reassignment MANUFACTURERS HANOVER TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FIRST BRANDS CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Assigned to FIRST BRANDS CORPORATION reassignment FIRST BRANDS CORPORATION RELASE OF SECURITY INTEREST RECORDED AT REEL 4645 AND FRAME 280-363 ON 12-08-1986. Assignors: MANUFACTURERS HANOVER TRUST COMPANY
Expired - Lifetime legal-status Critical Current

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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 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
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • Doherty ABSTRACT An improved valve assembly for an aerosol dispensing system comprising a valve stem movable between a dispensing and a nondispensing position and a sealing gasket tightly surrounding said stem.
  • An annular protuberance in said valve assembly projects against the gasket and deforms the gasket from its normal shape compressing it against the valve stem to enhance the sealing action.
  • a lubricator washer and a retaining lubricator cap are positioned externally of the container of the dispensing system to provide lubrication of the valve stem overcoming undue resistance to axial movement thereof.
  • the present invention relates to aerosol dispensers, and more particularly to the structure and arrangement of the valve assembly provided in the container of an aerosol dispensing system.
  • Aerosol dispensing systems normally comprise a container or can within which is stored under pressure the aerosol formulation to be dispensed.
  • a valve assembly is mounted in the container, usually at the top thereof, for the purpose of controllably effecting dispensing of the aerosol formulation from within the canto the exterior thereof.
  • the valve assembly usually comprises a stem which is cylindrical in shape and which extends from interiorly of the container to the exterior thereof. Actuation of the stem, normally by axial movement thereof, operates to effect passage of aerosol formulation through the stem for dispensing.
  • An actuator assembly which normally comprises an actuator button engaging the valve stem is mounted over the top of the container and when the actuator button is manipulated by a user, it effects movement of the valve stem thereby causing aerosol formulation to flow from within the container through the stem and through the actuator assembly to the point of ultimate use or application.
  • the valve assembly is usually fixedly mounted upon the container. However, due to the fact that the valve stem must be moved relative to the container, there is usually involved a sliding engagement between the outer surface of the valve stem and other structural elements of the valve assembly. Normally, the valve stem is surrounded by a gasket or similar means which tightly engages the stem to effect a seal but which enables sliding movement of the stem relative thereto. Because of this necessity for relative motion between the stem and other fixed components of the valve and container structure, a potential exists for the occurrence of unwanted leakage of aerosol formulation from the container. Additionally, clogging of the valve mechanism or jamming of the valve stem preventing necessary unrestricted movement thereof can occur due to unwanted deposits of aerosol formulation or for other reasons thereby rendering the aerosol dispenser inoperative. Problems of leakage, clogging and jamming are among the most important and significant obstacles which must be overcome in producing an operationally successful aerosol dispenser.
  • Another object of the present invention is to provide such an improved valve structure which may be simply produced and manufactured at an economically competitive cost.
  • the present invention may be described as pertaining to a valve assembly for an aerosol dispensing system comprising a valve stem which is mounted in said valve assembly in a manner enabling axial movement thereof between a dispensing and a nondispensing position.
  • a sealing gasket tightly surrounds the valve stem to prevent leakage of aerosol formulation.
  • annular protuberant means are provided in the valve assembly proximate the valve stem, said protuberant means projecting against the gasket deforming the gasket from its normal shape and compressing it against the valve stem to enhance the sealing effect.
  • a lubricator washer surrounding the valve stem in sliding engagement therewith is provided externally of the container means of the aerosol dispensing system, with a lubricator cap engaging said container means being provided to retain the lubricator washer in position.
  • the mounting cup 10 includes a mounting curl 12 which extends circumferentially around the outer.v portion of the mounting cup 10 adapting the structure for mounting to the body of an aerosol container (not shown) which stores the aerosol formulation to be dispensed.
  • the mounting curl 12 is suitably shaped and structured to permit leakproof attachment to a container in any appropriate manner which should be apparent to those skilled in the art.
  • the portion of the mounting cup 10 located radially inwardly from the mounting curl 12 engages and supports the aerosol valve assembly in a manner to be described hereinafter.
  • the valve assembly comprises a vertically movable valve stem 14 mounted within a valve-housing 16.
  • the valve stem includes an annular enlargement 18 which is engaged on the under side thereof by a spring 20 which biases the valve stem 14 in an upward direction.
  • the lower end of the housing 16 comprises an opening defined by a cylindrical wall 22 through which aerosol formulation may flow from the aerosol container (not shown) to the inner portion of valve housing 16 defined by cylindrical wall 24.
  • the lower portion of the stem 14 is smaller than the diameter of cylindrical wall 22 thereby providing a spacing between the lower end of valve stem 14 and cylindrical wall 22 to permit aerosol formulation to flow to within the chamber defined by wall 24.
  • a step formed by horizontal wall 26 between walls 22 and 24 engages the lower portion of spring 20 and thereby maintains the spring 20 in compression between the step 26 and the enlargement 1 8.
  • the valve housing 16 is firmly mounted in the container by mounting cup 10 and held securely in place by means of the particular configuration of mounting cup 10 which includes an indentation 28 engaging the underside of shoulder 30 formed in the upper portion of valve housing 16.
  • the mounting cup 10 extends from the indention 28 to a vertical cylindrical wall 32 tightly surrounding valve housing 16 and to an upper horizontal wall 34 which includes an opening defined by cylindrical edge 36 extending therethrough, the opening 36 surrounding the upper portion of valve stem 14 but being dimensioned to permit free vertical movement of the valve stem therethrough.
  • a gasket 38 preferably made of Buna N rubber, is positioned between the upper horizontal surface 40 of valve housing 16 and the upper horizontal wall 34 of the mounting cup 10.
  • the gasket 38 has therein an opening defined by wall 42 which is dimensioned to firmly engage the valve stem 14 to seal the interior of the valve housing 16 from the outer atmosphere.
  • a lubricator felt washer 43 mounted about the valve stem 14 externally of the container and of the mounting cup 10 is a lubricator felt washer 43 enclosed and held firmly in place by a lubricator cap 44.
  • the lubricator cap 44 comprises an inverted cup shaped arrangement which overlies the central portion of the mounting cup 10 with the inner wall of the lubricator cap 44 lying against the outer surface of walls 32 and 34 of the mounting cup 10.
  • the lubricator cap 44 includes an annular nose 46 which engages the indentation 28 of mounting cup 10 thereby permitting the lubricator cap 44 to be firmly mounted upon the mounting cup 10.
  • a circular opening defined by wall 48 permits passage through the lubricator cap of the valve stem 14 and a recess defined by walls 50 and 52 firmly holds the lubricator felt washer 43 therein.
  • annular protuberance 54 formed in the valve housing 16 at the intersection of the walls 24 and 40 of the valve housing 16.
  • valve stem 14 In the operation of the valve assembly described herein, dispensing of aerosol formulation is effected by downward depression of the valve stem 14 whereby the valve stem is caused to move against the bias of the spring thereby compressing this spring.
  • the spring 20 is held in compression between the step 26 and the enlargement 18 and thereby tends always to drive the valve stem 14 to its uppermost position depicted in the drawing.
  • an opening 56 in the valve stem 14 With the valve stem 14 depressed against the compression of spring 20, an opening 56 in the valve stem 14 is moved from exteriorly of the aerosol container past the lubricator washer 43 and the gasket 38 to a position interiorly of the valve housing 16.
  • valve stem 14 above opening 56 is hollow and provides a vertical conduit interiorly of the stem 14 for aerosol formulation to flow through opening 56 and the hollow interior of stem 14 through an exit in the top section 58 of stem 14 which defines the termination of the internal vertical conduit within the stem 14. Accordingly, with the opening 56 positioned below the gasket 38 and interiorly of the valve housing 16, aerosol formulation will be caused to continuously flow through the valve stem 14 to be dispensed therefrom.
  • the reciprocating movement of the valve stem as it is actuated between a dispensing and a nondispensing position results in frictional engagement between the external surface of the valve stem and the sealing gasket of the aerosol assembly thereby inducing deformation of the gasket.
  • the frictional engagement between the exterior surface of the valve stem 14 and the surface 42 of gasket 38 causes some deflection of downward bending of the gasket 38.
  • Many factors will be pertinent to a determination of whether the amount of gasket deflection will cause operational problems in the valve assembly. Such factors as the types of materials used for the valve stem and the gasket, as well as the particular structural configuration of that portion of the valve housing 16 which supports the gasket 38, will be factors to be considered.
  • the protuberance 54 extends completely around the edge of valve housing 16 at the intersection of surfaces 24 and 40. Furthermore, the protuberance 54 should project into the gasket 38 a sufficient amount to effect some deformation thereof from its normal shape and compression of the gasket material about the valve stem 14. As shown in the drawing, the protuberance 54 involves a narrow jutting edge which bites into the gasket 38 to force the material in a more compact arrangement about the valve stem 14.
  • protuberance 54 depicted and described in the drawing may be tolerated. For example, it may not be necessary to form the protuberance 54 with a narrow jutting edge but rather with a more rounded configuration.
  • the protuberance 54 provides structural support resisting the downward deflection of the surface 42 of gasket 38 when the valve stem 14 is moved downwardly.
  • the gasket 38 By means of the present invention there is provided structural support for the gasket 38 which is greater than the support which could normally be provided within the limitations of the necessity for clearance between the valve stem 14 and the valve housing 16.
  • the protuberance 54 extends into the material of the gasket 38 and thereby effects a compression or firming of the material of the gasket 38. Because of this, the gasket material surrounding the valve stem 14 is caused to be more resistant to downward deflection and less inclined to become deformed in such a manner that particles of aerosol formulation may become entrapped between the surface 42 and the valve stem 14.
  • structural support for the gasket 38 may be provided in a dry powder aerosol system which is in excess of that which could be provided due to clearance limitations and which is sufficient to overcome and prevent problems of leakage, clogging and jamming thereby enabling production of a dependable, operative dry powder aerosol dispensing valve assembly.
  • valve stem 14 could be formed of several types of material, among those commonly in use being molded thermoplastic material or stainless steel.
  • the gasket 38 is preferably formed of Buna N rubber. The specific material utilized will affect the amount of friction which is developed between the outer surface of the valve stem 14 and the surface 42 of the gasket 38.
  • the lubricator washer 43 is provided about the valve stem 14 exteriorly of the aerosol container and of the mounting cup 10.
  • the purpose of the lubricator washer 43 is to provide a lubricant coating about the exterior surface of valve stem 14 as the valve stem is moved between the dispensing and nondispensing positions thereby to overcome the effect of any additional frictional resistance which might arise between the surface 42 of gasket 38 and the exterior surface of valve stem 14.
  • the washer 43 may be comprised of felt material which is impregnated with a lubricant, such as Ucon 1145.
  • the washer 43 may be easily mounted upon the aerosol dispenser merely by positioning the washer over the valve stem 14 after assembly of the dispenser.
  • the lubricator cap 44 may be thereafter positioned over the washer 43 and the central hub portion of the mounting cup to hold the washer 43 securely in place about the valve stem 14 in a simple and expedient manner.
  • the lubricator cap 44 may be comprised of molded thermoplastic material and may be easily snapped over the central hub portion of the mounting cup 10 into the position shown. Due to the nature of the material of the lubricator cap 44, some deflection thereof is possible.
  • valve assembly for an aerosol dispensing system
  • container means storing aerosol formulation to be dispensed
  • means firmly mounting said valve assembly to said container means, means including said valve assembly defining an opening, a valve stem extending through said opening and mounted in said valve assembly in a manner enabling axial movement thereof, conduit means defined by said valve stem and extending therethrough, said valve stem being axially movable movable between a dispensing position wherein said conduit means is placed in flow communication with the interior of said container means, and a nondispensing position stopping said flow communication, and asket means mounted In said valve assembly encircling sai valve stem in tight sliding engagement therewith enabling said axial movement of said valve stem between said dispensing and nondispensing positions while providing a seal for said opening preventing undue leakage of aerosol formulation therethrough, the improvement comprising annular protuberant means in said valve assembly closely adjacent said valve stem projecting beyond and through the limits of the outer surface of said gasket means and deforming said gasket means from
  • valve assembly according to claim 1 wherein said protuberant means comprise a narrow edge defined by a portion of said valve assembly projecting against said gasket means causing said deformation.
  • a valve assembly according to claim 1 comprising a lubricator cap overlying said lubricating washer and firmly engaging said container means to hold said washer in place about said valve stem.

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)
  • Nozzles (AREA)
US772704A 1968-11-01 1968-11-01 Improved aerosol valve with gasket deformation to enhance sealing Expired - Lifetime US3586216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77270468A 1968-11-01 1968-11-01

Publications (1)

Publication Number Publication Date
US3586216A true US3586216A (en) 1971-06-22

Family

ID=25095944

Family Applications (1)

Application Number Title Priority Date Filing Date
US772704A Expired - Lifetime US3586216A (en) 1968-11-01 1968-11-01 Improved aerosol valve with gasket deformation to enhance sealing

Country Status (8)

Country Link
US (1) US3586216A (no)
BE (1) BE741041A (no)
CH (1) CH500883A (no)
DE (1) DE1954907A1 (no)
FR (1) FR2022347A1 (no)
GB (1) GB1235598A (no)
NO (1) NO127380B (no)
SE (1) SE346227B (no)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023710A (en) * 1971-09-29 1977-05-17 Lever Brothers Company Pressure pack valve for dispensing particulate materials
US5421492A (en) * 1993-11-02 1995-06-06 Glaxo Inc. Metered aerosol dispensing apparatus and method of use thereof
US5921447A (en) * 1997-02-13 1999-07-13 Glaxo Wellcome Inc. Flow-through metered aerosol dispensing apparatus and method of use thereof
US6112950A (en) * 1995-10-31 2000-09-05 Glaxo Group Limited Low-friction valve stem
US20030121935A1 (en) * 2001-12-31 2003-07-03 Arsenault Cathleen M. Gasket for use in a metering valve that limits seal intrusion
US20030127464A1 (en) * 2001-12-31 2003-07-10 Bryant Andrew M. Valve stem for use in a metering valve of a metered dose inhaler
US20060131346A1 (en) * 2003-07-07 2006-06-22 Purkins Graham R Two component molded valve stems
US20080135584A1 (en) * 2003-02-07 2008-06-12 Bio-Del Limited Metering Valves for Dispensers
US20080265198A1 (en) * 2004-08-11 2008-10-30 Warby Richard J Metering Valves for Dispensers
US20100300437A1 (en) * 2007-05-10 2010-12-02 Sivigny Michael B Manufacture of metered dose valve components
CN101254838B (zh) * 2007-03-02 2012-02-29 麦格纳姆制造有限公司 用于气雾剂容器的阀门
EP2444160A1 (en) 2010-10-21 2012-04-25 Henkel Consumer Goods Inc. Actuator for dispensing aerosol hair care products closer to the scalp

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023710A (en) * 1971-09-29 1977-05-17 Lever Brothers Company Pressure pack valve for dispensing particulate materials
US5421492A (en) * 1993-11-02 1995-06-06 Glaxo Inc. Metered aerosol dispensing apparatus and method of use thereof
US6112950A (en) * 1995-10-31 2000-09-05 Glaxo Group Limited Low-friction valve stem
US5921447A (en) * 1997-02-13 1999-07-13 Glaxo Wellcome Inc. Flow-through metered aerosol dispensing apparatus and method of use thereof
US20030121935A1 (en) * 2001-12-31 2003-07-03 Arsenault Cathleen M. Gasket for use in a metering valve that limits seal intrusion
US20030127464A1 (en) * 2001-12-31 2003-07-10 Bryant Andrew M. Valve stem for use in a metering valve of a metered dose inhaler
WO2003057594A1 (en) * 2001-12-31 2003-07-17 3M Innovative Properties Company Gasket for use in a metering valve that limits seal intrusion
US6863195B2 (en) 2001-12-31 2005-03-08 3M Innovative Properties Company Valve stem for use in a metering valve of a metered dose inhaler
US7997458B2 (en) * 2003-02-07 2011-08-16 Consort Medical Plc Metering valves for dispensers
US20080135584A1 (en) * 2003-02-07 2008-06-12 Bio-Del Limited Metering Valves for Dispensers
US20060131346A1 (en) * 2003-07-07 2006-06-22 Purkins Graham R Two component molded valve stems
US7997459B2 (en) 2004-08-11 2011-08-16 Consort Medical Plc Metering valves for dispensers
US20080265198A1 (en) * 2004-08-11 2008-10-30 Warby Richard J Metering Valves for Dispensers
CN101254838B (zh) * 2007-03-02 2012-02-29 麦格纳姆制造有限公司 用于气雾剂容器的阀门
US20100300437A1 (en) * 2007-05-10 2010-12-02 Sivigny Michael B Manufacture of metered dose valve components
EP2444160A1 (en) 2010-10-21 2012-04-25 Henkel Consumer Goods Inc. Actuator for dispensing aerosol hair care products closer to the scalp

Also Published As

Publication number Publication date
DE1954907A1 (de) 1970-10-15
CH500883A (fr) 1970-12-31
SE346227B (no) 1972-07-03
NO127380B (no) 1973-06-18
GB1235598A (en) 1971-06-16
BE741041A (no) 1970-04-30
FR2022347A1 (no) 1970-07-31

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Date Code Title Description
AS Assignment

Owner name: MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MOR

Free format text: MORTGAGE;ASSIGNORS:UNION CARBIDE CORPORATION, A CORP.,;STP CORPORATION, A CORP. OF DE.,;UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,;AND OTHERS;REEL/FRAME:004547/0001

Effective date: 19860106

AS Assignment

Owner name: FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY;REEL/FRAME:004611/0201

Effective date: 19860630

Owner name: FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY;REEL/FRAME:004611/0201

Effective date: 19860630

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Owner name: UNION CARBIDE CORPORATION,

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MORGAN BANK (DELAWARE) AS COLLATERAL AGENT;REEL/FRAME:004665/0131

Effective date: 19860925

AS Assignment

Owner name: MANUFACTURERS HANOVER TRUST COMPANY

Free format text: SECURITY INTEREST;ASSIGNOR:FIRST BRANDS CORPORATION, A CORP OF DE;REEL/FRAME:004645/0280

Effective date: 19860701

AS Assignment

Owner name: FIRST BRANDS CORPORATION

Free format text: RELASE OF SECURITY INTEREST RECORDED AT REEL 4645 AND FRAME 280-363 ON 12-08-1986.;ASSIGNOR:MANUFACTURERS HANOVER TRUST COMPANY;REEL/FRAME:005717/0599

Effective date: 19900802