US3780913A - Aerosol valves - Google Patents

Aerosol valves Download PDF

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Publication number
US3780913A
US3780913A US00183148A US3780913DA US3780913A US 3780913 A US3780913 A US 3780913A US 00183148 A US00183148 A US 00183148A US 3780913D A US3780913D A US 3780913DA US 3780913 A US3780913 A US 3780913A
Authority
US
United States
Prior art keywords
cup
flange
counterbore
valve
interior
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
US00183148A
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English (en)
Inventor
W Warren
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.)
Consort Medical Ltd
Original Assignee
Bespak Industries Ltd
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
Application filed by Bespak Industries Ltd filed Critical Bespak Industries Ltd
Application granted granted Critical
Publication of US3780913A publication Critical patent/US3780913A/en
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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/44—Valves specially adapted for the discharge of contents; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • Thls constructlon avoids mouldlng problems of the 56] References Cited prior art wherein the apertures are formed by separate movable pins in the moulding tool, which are expen- UNITED STATES PATENTS sive and are prone to leave vestigial flashes at their 3,642,180 2/1972 Lehmann ZZZ/402.13 junction with a central core pin, 3,255,926 6/l966 Modderno ZZZ/402.22 X 3,217,936 11/1965 Abplanalp ZZZ/402.24 X 2 Claims, 4 Drawing Figures F c B PATENIEnumes I975 3.780.913
  • the invention relates to valve assemblies for pressurised dispensing containers.
  • valve assemblies for pressurised dispensing containers comprising a moulded valve cup secured at its open outer end to a closure member or ferrule, a valve member having a discharge passage and extending in sealed relation through the closure member into the interior of the cup, a valve spring in the cup biasing the valve member outwardly to a normal closed position in which the discharge passage is isolated from the interior of the cup, the valve member being movable against the action of the spring to connect the discharge passage with the interior of the cup and at least one aperture in the side wall of the cup to provide communication between the interior of the cup and the interior ofa container upon which the valve assembly is mounted in use.
  • Such valve assemblies are hereinafter referred to for convenience as being of the class specified.
  • side-wall aperture or apertures may, in some cases, provide the only means of communication, or they may supplement a bottom opening in the valve cup. They may serve, for example, as vapour phase taps to ensure the mixing in the valve cup of vapour phase and liquid phase propellant, or as a means of ensuring substantially complete liquid exhaustion of an aerosol package for use in an inverted position.
  • valve cups with side apertures presents a number of manufacturing difficulties which present considerable problems in the mass production of low-cost units.
  • Such side apertures are commonly formed by separate, movable pins in the moulding tool, resulting in relatively high cost tools and difficulties in maintaining repetitive production to a sufficiently high degree of accuracy.
  • vestigial flashes frequently occur at the junction of the side pins and the central core pin which they abut.
  • the present invention provides a novel design of valve cup with one or more side apertures, designed to permit its production by injection moulding in a manner which avoids the disadvantage inherent in using moulding tools having movable side pins.
  • the invention accordingly provides a moulded valve cup having a flange at its open outer end and at least one aperture extending through the flange in a direction parallel with the main axis of the cup, the outer part of the aperture communicating laterally with the interior of the valve cup in the region of the flange whereby to place the exterior and interior of the valve cup in direct communication with each other.
  • valve cup in accordance with the invention is described below, by way of example only, with reference to the accompanying drawings, in which:
  • FIG. 1 is a top plan view of the valve cup
  • FIG. 2 is a section on the line llll of FIG. 1;
  • FIG. 3 is a section on the line Ill-Ill of FIG. 2;
  • FIG. 4 is a sectional elevation of a valve assembly incorporating the valve cup of FIGS. 1 3.
  • the valve cup has a main side wall 1 of generally square cross-section and a flange 2 at its upper end encompassing a circular counterbore 3 which merges with square bore beneath it.
  • the diameter of the counterbore corresponds substantially to the diagonal of the square bore and its axial depth is substantially equal to that of the flange 2.
  • the lower, inner end of the valve cup has a reduced diameter neck portion 4 the bore of which forms a bottom outlet 5.
  • a pair of diametrically opposed side apertures 6 are formed through the flange 2 and in a direction parallel with the main axis of the cup, and the outer part of each aperture communicates laterally with the interior of the cup (in the region of the flange 2 and counterbore 3) and the exterior of the cup immediately beneath the flange 2, whereby to put the exterior of the cup, beneath the flange, and the interior of the cup in communication with each other.
  • apertures can therefore be formed by core pin portions which move parallel with the axis of the main core pin and are preferably formed as projections on the side of the main core pin.
  • the tool is preferably designed to have its main parting line in the plane of the lower surface of the flange 2, so that the butting-off faces for the core-pin projections are in this plane, and perpendicular to the direction of parting of the mould parts.
  • FIG. 4 shows a valve assembly incorporating the cup A, the flange 2 of which is sealingly secured in a closure member or ferrule B, in clamping engagement with a seal C.
  • a movable valve member in the form of a valve stem D extends outwardly through the seal and ferrule, being biased outwardly by a valve spring E whose inner end is supported in the cup A.
  • the stem is formed with side apertures F leading to an axial discharge passage G, and the valve is normally closed by engagement of a sealing collar H pressed by the spring E into tight engagement with the inner surface of seal C.
  • This particular valve is intended to operate in the inverted position, so that liquid enters the interior of the cup A through the bottom opening 5 and the side apertures 6. Inward movement of the valve stem D exposes the aperture F to the interior of the cup A, and the contents of the container are discharged through the passage G in known manner.
  • a moulded valve cup for an aerosol valve assembly comprising a tubular side wall defining an interior cavity, an outwardly projecting flange at the outer end of said wall, means defining a counterbore to said internal cavity said counterbore having an axial depth substantially equal to the thickness of said flange, and means defining at least one aperture extending through said flange in a direction parallel with the main axis of the cup and opening radially inwardly to the periphery of said counterbore over the full thickness of said flange.

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)
  • Lift Valve (AREA)
US00183148A 1970-09-30 1971-09-23 Aerosol valves Expired - Lifetime US3780913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4650570 1970-09-30

Publications (1)

Publication Number Publication Date
US3780913A true US3780913A (en) 1973-12-25

Family

ID=10441524

Family Applications (1)

Application Number Title Priority Date Filing Date
US00183148A Expired - Lifetime US3780913A (en) 1970-09-30 1971-09-23 Aerosol valves

Country Status (6)

Country Link
US (1) US3780913A (show.php)
AU (1) AU3378471A (show.php)
DE (1) DE2147689A1 (show.php)
FR (1) FR2108690A5 (show.php)
GB (1) GB1327247A (show.php)
ZA (1) ZA716320B (show.php)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25879A (en) * 1859-10-25 Method qe elevating water
US3217936A (en) * 1963-01-09 1965-11-16 Robert Henry Abplanalp Dispenser for materials under pressure
US3231153A (en) * 1964-01-03 1966-01-25 Green Multiple spray rate pressurized package dispenser
US3255926A (en) * 1965-02-09 1966-06-14 Modern Lab Inc Compartmented pressurized dispensing device
US3642180A (en) * 1970-03-26 1972-02-15 Kenneth G Lehmann Spring-biased metering and nonmetering tilt valve without coil spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25879A (en) * 1859-10-25 Method qe elevating water
US3217936A (en) * 1963-01-09 1965-11-16 Robert Henry Abplanalp Dispenser for materials under pressure
US3231153A (en) * 1964-01-03 1966-01-25 Green Multiple spray rate pressurized package dispenser
US3255926A (en) * 1965-02-09 1966-06-14 Modern Lab Inc Compartmented pressurized dispensing device
US3642180A (en) * 1970-03-26 1972-02-15 Kenneth G Lehmann Spring-biased metering and nonmetering tilt valve without coil spring

Also Published As

Publication number Publication date
AU3378471A (en) 1973-03-29
DE2147689A1 (de) 1972-04-06
GB1327247A (en) 1973-08-15
ZA716320B (en) 1972-05-31
FR2108690A5 (show.php) 1972-05-19

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