BRPI0806080A2 - membrane piercing twist closure - Google Patents

Abstract

CLOSING WITH MEMBRANE PUNCHING TORTION. The present invention relates to a dispensing closure system which is provided for a container having an opening in which a membrane is interposed between the container opening and the dispensing closure system. The system includes a base for extending the container into the opening. The base has a receiving surface and an annular sealing flange extending radially inwardly around the passageway. A movable spout is mounted on the base receiving passage and has a pinched discharge end that projects axially out of the base receiving passage. The spout has a dispensing passage extending through the spout and has a peripheral sealing surface which is sealedly coupled with the annular sealing flange of the base. The spout also has a piercing element at one end axially inward of the spout. A cam track is located at the base or spout. A cam follower is located on the other base and spout, and the cam follower is coupled to the cam track. The clamped discharge end of the nozzle may be grasped to rotate the nozzle for axial movement to puncture the membrane.

Description

Report of the Invention Patent for "MEMBRANE PUNCHING CLOSURE".

Technical Field

The present invention relates to closures of containers for dispensing a fluid substance. More particularly, the invention relates to a dispensing closure for use with a container, wherein a membrane is interposed between the container and the dispensing closure.

Background of the Invention and Related Technical Problems Previous

Fluid materials, including liquids, creams, powders, etc., may be conventionally packaged in a container having a dispensing closure, which includes a body part, which is located at the full end of the container and which defines one or more dispensing openings or holes. -tension. A cover or lid may be provided to be securely attached to the body portion for occlusion of the dispensing opening when the container is not in use. This prevents spillage if the container is dropped or tilted. The lid can also help to keep the contents fresh and can reduce the ingress of contaminants.

Various dispensing closure designs have been developed for various products that are in liquid or powder form (eg, shampoo, lotion, cosmetic powder, etc.). One type of closure includes a slot-type dispensing valve mounted in the container opening. The valve has a slot or slots defining a normally closed orifice which opens to allow it to flow in response to increased pressure within the container when the container is tightened.

A widely used form of the valve automatically closes to stop the flow through it after releasing the highest pressure. Closure designs using these valves are illustrated in U.S. Patents. 5,271,531, 5,927,566 and 5,934,512. Typically, the closure includes a base mounted to the neck of the container to define a seat for receiving the valve, and includes a retaining ring or housing structure for retaining the valve to the seat in the base. See, for example, U.S. patents. 6,269,986 and 6,616,016. U.S. Patent 5,839,626 discloses a closure having a valve from which a powder is discharged through a diffuser to produce a dispersed fine powder (e.g., cosmetic powder) distribution pattern. A closure may be provided with a cover to cover a valve during transport or when the container is packed for travel (or otherwise when the container is not in use). See, for example, Figures 31 - 34 of US Patent 5,271,531. The cover can keep the valve clean and / or protect it from damage.

In some packages, it is also desirable to interpose a membrane (e.g., a seal or liner) by opening the container and providing a closure, which (1) is installed in the membrane container, and (2) has an element that can be fitted. rotated to open the membrane by puncturing or cutting it. See, for example, U.S. Patent Nos. 4,853,665, 4,884,705 and 5,482,176.

The inventor of the present invention has found that it would be advantageous to provide an improved closure for dispensing a fluid product, including liquid. In particular, the inventor has found that this innovative design provides advantages not hitherto considered in the packaging industry or suggested by the prior art.

Summary of the Invention

The inventor of the present invention has invented an innovative dispensing closure which, among other things, may be provided with a cap (or not) and which requires only two relatively movable parts, (1) a base, and (2) a spout, and in what:

(1) a spout may be initially installed by the bottom of the base;

(2) the closure accommodates rotation of the nozzle member relative to the base (in the direction of rotation of the opening counterclockwise, according to a preferred embodiment), to perform axial movement of a nozzle to drive a drilling element to cut at least one flow opening in a membrane interposed between the container and the closure (3) coupled drive / driven surfaces defined by the spout and base are sealed internally within the closure and are not exposed to the environment before, during or after operation; and

(4) further handling is not required after cutting the membrane to allow dispensing of the product (considering that the optional cover, if any, was first opened).

In a preferred embodiment, the dispensing closure includes both a cap and a valve. Use of a valve may prevent leakage if the container is inadvertently dropped and may minimize contaminant ingress even if the container is not closed with a lid. Dispensing closure is especially suitable for use in dispensing a liquid.

The present invention allows the user to conveniently open a membrane (such as a conventional coating) by puncturing it without having to manipulate the package in order to first expose the membrane and without requiring removal of the membrane per se. The membrane, after perforation, can then remain in the container under closure so that it does not present a chip forming problem or a choking problem for children.

The dispensing closure of the present invention inhibits tampering with the package.

Additionally, the inventive dispensing closure components can be designed for easy accommodation of the component assembly during closure fabrication.

Also, the inventive dispensing closure can optionally be provided with a design that accommodates high quality, high volume, efficient fabrication techniques with a reduced product rejection rate.

According to the present invention, an improved dispensing closure is provided for a container having an opening for the inner part of the container in which a fluid substance (i.e. a product) may be stored. A membrane is initially interposed between the container and the dispensing closure. For example, the membrane may be sealed by the top of the container opening and / or the interior of the dispensing closure to occlude the open container.

The dispensing closure includes a base for extending the container into the container opening. The base (1) defines a receiving passage through the base, and (2) an annular sealing flange, which (a) is axially located at least part of the length of the receiving passage, and (b) extends radially into a peripheral portion of the receiving path to define an opening for receiving path.

The dispensing closure also includes a movable spout, which (1) is at least partially arranged in the base receiving passage, (2) has a receiving passage extending through the spout, (3) has a discharge end that may be which (a) is located at one end axially out of the spout, and (b) protrudes axially out of the base, (4) has a peripheral sealing surface that is sealedly coupled by the annular sealing flange, and (5 ) has a piercing element at one end axially into the spout.

The dispensing closure further includes a cam track located at the base or nozzle axially into the annular sealing flange. The closure also includes a cam follower, which is (1) located on one another of the base and nozzle, and (2) coupled to the flesh track, whereby the squeezeable discharge end of the baffle can be grasped to rotate. the spout axially from a non-perforation site, axially external to a perforation site, axially internal.

Various other advantages and aspects of the present invention will be readily apparent from the following detailed description of the invention, the claims and the accompanying drawings.

Brief Description of the Drawings

In the accompanying drawings that form part of the descriptive report, in which similar numbers are used to designate similar parts thereof.

Figure 1 is an isometric view of a dispensing closure of the present invention in the form of a separate dispensing closure according to a preferred embodiment of the invention, and the closure is shown in an open condition as molded; before installation in a container, and is shown with the spout at the non-perforated axially out (raised) location.

Figure 2 is a top plan view of the closure shown in Figure 1.

Figure 3 is a cross-sectional view taken along plane 3 - 3 in Figure 1.

Figure 4 is an isometric fragmentary cross-sectional view similar to Figure 3, but in Figure 4 the closure lid is closed and the closure is shown installed in a container.

Figure 5 is a fragmentary cross-sectional view taken along plane 5-5 in Figure 4.

Figure 6 is a cross-sectional view taken along plane 6 - 6 in Figure 5.

Figure 7 is a view of the closure similar to Figure 4, but Figure 7 shows the closure cap.

Figure 8 is a fragmentary cross-sectional view taken generally along plane 8 - 8 in Figure 7.

Figure 9 is a detailed isometric view of the closure and department of the container shown in Figure 7, but in Figure 9 the closure spout had been rotated about 90 ° compared to Figure 7.

Figure 10 is a detailed isometric view of the closure and part of the container shown in Figure 9.

Figure 11 is a top plan view of the closing spout shown in Figure 10.

Figure 12 is a cross-sectional view taken generally along plane 12-12 in Figure 11. Figure 13 is a cross-sectional view taken along plane 13-12 in Figure 11.

Figure 14 is an isometric view of the locking spout at the bottom, bottom side of the spout;

Figure 15 is an isometric view of the cap and body or open closure (with the spout removed and not shown), and Figure 15a view faces the bottom, underside of the body or closure base.

Figure 16 is an isometric view of the open closure shown in Figure 1, but in Figure 16, the nozzle had been rotated 909 to the axially in (lowered) drilling site.

Figure 17 is a top plan view of the closure shown in Figure 16.

Figure 18 is a cross-sectional view taken along plane 18-18 in Figure 17.

Figure 19 is a cross-sectional view taken along plane 19-19 in Figure 17, but Figure 19 also shows the closure installed on the container and shows the perforation of the membrane liner at the top of the container.

Figure 20 is an isometric view of the body or base and cap closed bottom-facing closure, bottom side or base closure (and with container omitted for ease of illustration), with the membrane liner also shown being punctured by the elements spout perforators.

Description of Preferred Embodiments

Although such an invention may be embodied in many different forms, this specification and the accompanying drawings describe only one specific form as an example of the invention. The invention, however, is not intended to be limited to the embodiment described herein. The scope of the invention is indicated in the appended claims.

For ease of description, many of the figures illustrating the invention show a dispensing closure system in a preferred form of a separate non-removable dispensing closure in the typical orientations that the closure has when installed on the top portion of a container when the container is stored standing on its base, and terms such as top, bottom, horizontal, etc., are used with reference to that position. It will be understood, however, that the closure system of this invention may be manufactured, stored, transported, used and sold in an orientation other than that described.

The dispensing closure system of this invention is suitable for use with a variety of conventional or special fluid substance dispensing systems, including packaging, articles and other dispensing equipment or apparatus, the details of which, although not illustrated or described, will be apparent to those skilled in the art, as well as an understanding of such fluid substance dispensing systems. Such a fluid substance dispensing system, or a portion thereof, with which the inventive dispensing closure system cooperates is hereinafter simply referred to as a "container". The particular container, per se, which is illustrated and described in the present specification is not a part, and is therefore not intended to limit the broad aspects of the present invention. Those skilled in the art will understand new and non-obvious inventive aspects exclusively within the e-exemplary dispensing closure system.

A presently preferred embodiment of a dispensing closure system of the present invention is illustrated in Figures 1-20 and is generally designated in many of these figures by reference numeral 20 (e.g., Figure 1). In the illustrated preferred embodiment, the closure system 20 is provided in the form of a separate dispensing closure 20, which is adapted to be mounted or installed on a container 22 (see, for example, Figures 4, 7 and 9), and the container 22 is provided. typically contain a fluid substance.

As can be seen from Figure 9, the container 22 includes an annular shoulder 25 at the upper end of the hollow body portion of the container 22. A neck 26 extends upwardly from the inner radius of the shoulder 25. Neck 26 defines an aperture 27 (Figure 9) for the inner recipient.

Referring to Figures 7 and 9, a tamper evidence coating 28, defined by a membrane in the form of a pierceable disk, is initially disposed by the top of the neck of the container 26 over opening 27 within closure 20. That is, the membrane, disc or liner 28 is interposed between container 22 and closure 20.

Figures 4-10 show liner 28 before it is pierced when the user manipulates the closure as described in detail below, and Figures 9 and 20 show liner 28 after perforation. The coating 28 may be of any special or conventional type (eg aluminum foil - with or without a laminated top and / or bottom layer of thermoplastic material, or a completely non-metallic membrane including at least a layer of a thermoplastic material).

In a preferred embodiment of a package employing the closure of the present invention, the liner 28 is typically heat-sealed by it and to the top of the container neck26. The sheath 28 may alternatively be sealed by it and to one or more inner surfaces, facing downwardly of the closure 20, instead of or in addition to being sealed by it and to the upper neck of the receiving neck 26.

The neck of the container 26, in the preferred embodiment illustrated in Figure 9, has an outer male thread 29 to engage the dispensing closure system 20. The container body 22 may have any suitable configuration, and the upwardly projecting neck 26 may have a different size and / or cross-sectional shape with respect to the container body. (Alternatively, container 22 need not have a neck 26 per se. Instead, container 22 may consist of only one body with one opening.)

In a presently preferred embodiment, closure 20 is adapted to be threaded but not removably secured to the top of container 22. For this purpose, the top of the container, such as neck 26, includes a or more anti-rotation teeth 29A (Figure 9) to engage a portion of closure 20 as described in more detail below. In the preferred embodiment illustrated in Figures 6 and 10, there are two anti-rotation tooth assemblies 29A, each assembly comprising three teeth 29A (see Figure 6), and the two tooth assemblies 29A are diametrically opposed to one another.

While the container 22 per se is not part of the broader aspects of the present invention per se, it will be appreciated that at least a part of the dispensing closure system 20 of the present invention may optionally be provided as a part, or as an example. however, in the preferred embodiment illustrated, the dispensing closure system 20 is a completely separate article or unit (e.g., a dispensing closure), which may comprise a part or pieces. which is adapted to be removably or non-removably installed in a pre-fabricated container 22 having an opening 27 for the inner part of the container or some other fluid substance handling system. In the following, the dispensing closure system or dispensing closure 20 will simply be referred to as closure 20.

The illustrated preferred embodiment of closure 20 is adapted to be used with a container 22 having an opening 27 to provide access to the interior of the container and to a product (i.e. a material in the form of a fluid substance) contained within. on it (after coating 28 is perforated). Closure 20 may be used to dispense various substances including, but not limited to liquids, suspensions, mixtures, etc. (such as, for example, a personal care product, an industrial or household cleaning product, or other compositions of matter - for example, compositions for use in activities involving manufacturing, commercial or domestic maintenance, construction, agriculture, medical treatment). military operations, etc.).

Container 22, with which closure 20 may be used, will typically be a compressible container having one or more flexible walls which can be grasped by the user and squeezed or compressed to increase internal pressure within the container so as to produce the force. out of the container and by the open closure. Such flexible container wall will typically have inherent resilience, so that when clamping forces are eliminated, the container wall returns to its normal, stress-free shape. Such a compressible container is preferred in many applications, but may not be necessary or preferred in other applications. For example, in some applications, it may be desirable to attach a generally rigid container and pressurize the interior of the container at selected times with a piston or other pressurization system (not shown), or reduce external ambient pressure. around the outer part of the closure to suck the material out through the open closure.

In another alternative embodiment (not shown), in which the closure does not contain a pressure actuatable valve, the container may be substantially rigid, especially in applications in which the product is a low viscosity liquid that can easily be dispensed by. inverting the container and then pouring the liquid through the open closure.

It is currently contemplated that many applications employing the closure 20 will be conveniently performed by molding at least part of the closure components 20 of one or more thermoplastic materials. In the illustrated embodiment, some of the closure components may be molded from a suitable thermoplastic material, such as, but not limited to, polypropylene. Locking components can be molded separately - and can be molded from different materials. The materials can be the same or different colors and textures.

As can be seen from Figure 9, the particularly particularly preferred form of closure 20 includes four basic components: (1) a unitary molded body or base 30 and a lid or cover 32 connected together with a secured hinge 31; (2) a spout 34; (3) a dispensing valve 36 which is adapted to be mounted to the spout 34; and (4) a retaining ring 38, which holds valve 36 at the top of nozzle 34.

In the preferred form of the invention, the cover 32 is provided to be closed over and cover the upper part of the base or body 30. The cover 32 may be moved to expose the upper part of the base or body 30, for dispensation. The cover 32 is movable between (1) a closed position on the base or body 30 (as shown in Fig. 4) and (2) an open position (as shown in Figures 1 - 3 and 7). In an alternative design (not shown), the cover 32 may be a separate component which is completely removable from the closure base 30, or the cover 32 may be clamped to the base 30 with a strip. In another alternative design (not shown), the cover may be completely omitted. In the preferred illustrated embodiment, cover 32 is pivoted with base 30 to accommodate pivoting movement of cover 32 between the closed position and the open position.

As can be seen from Figures 9 and 15, body or base 30 includes a platform 40. A skirt 42 extends downwardly from the periphery of platform 40. As can be seen from Figures 3 and 15, an inner collar 44 extends downwardly from the platform 40 to couple the neck of the container 26 when the base of the closure 30 is mounted on the container 22 (as shown in Figure 4). As can be seen from Figures 3, 9 and 15, the inner part of the inner collar 44 defines a female, inner thread 46 for threaded engagement with the male outer thread 29 of the container neck (Figure 4), when the base of the locking collar is closed. dispensing 30 is installed on the neck of the container 26.

Alternatively, the locking collar 44 may be provided with some other container connecting means, such as a snap-on shoulder (not shown) to engage a shoulder (not shown) on the neck of the container, respectively. Also, the inner collar of the closure base 44 may be, differently, permanently in the container 22 by induction melting, transassonic melting, gluing or the like, depending on the materials used for the inner collar of the closure base 44 and the container 22. In these embodiments Alternatively, the liner 28 will have to be sealed initially at the top of the neck of the container 26 prior to permanently securing the closure 20 to the neck 26, and a conventional liner fixation process may be employed (as discussed below). -low).

In base collar 44, below thread 46, base collar 44 includes at least one claw tooth 50 (Figures 5, 6, 9 and 15), which is adapted to: (1) later deflect ratchet teeth anti-rotation of container 29A when base 30 is screwed into the neck of container 26; and (2) contacting at least one of the anti-rotation ratchet teeth 29A when torque is applied to base 30 in the direction of unscrewing rotation, thereby preventing unscrewing of base 30 from container 22. In the preferred embodiment, There are a plurality of such claw teeth 50 evenly spaced from each other around the inner circumference of the lock base collar 44.

Closure base collar 44 may be of any suitable configuration to accommodate an upwardly projecting neck 26 of container 22 or to accommodate any other portion of a recipient received within the particular configuration of internal closure base collar 44 - even. if a container does not have a neck per se. The main part of the container 22 may have a different cross-sectional shape from that of the container neck 26 and the inner locking base collar 44. The inner locking base collar 44 may be adapted to mount other types of locking systems. handling container for fluid substances (eg including dispensing apparatus, machines or equipment).

In the illustrated embodiment of the invention, the recipient neck receptacle passage in the inner collar of the closure base 44 has a generally cylindrical configuration, but includes the projecting-apart thread 46. However, the closure base collar 44 may have another settings. For example, the inner collar of the closure base 44 may have a prism or polygon configuration adapted to be mounted to the top of a container neck having a polygon configuration. Such prism or polygon configurations will not accommodate the use of a threaded fastener, but other fastening means may be provided, such as a snap-in groove and groove arrangement, an adhesive or the like.

As can be seen from Figure 10, the base of the closure 30 includes an inner sleeve 54 which is concentric with but located radially into the inner collar 44. Inner sleeve 54 protrudes axially. descending from the inner edge of the lock base platform40. The distal end of the inner sleeve 54 of the base 54 defines an annular sealing surface 56 (Figure 15) for sealing against the upwardly facing surface of the liner 28, when the liner 28 is installed on the top of the neck of the container 26 and when the The locking base 30 is installed over the neck of the container 26 as shown in Fig. 8. When the locking base 30 is screwed onto the neck of the container 26, sufficient torque is applied to force the surface. annular seal 56 tightly against a peripheral portion of the liner 28 over the neck of the container 26 to form a liquid-proof seal that remains effective after the liner 28 is subsequently punctured or otherwise ruptured. when closure 20 is designed to open container 22 as explained in detail below.

As can be seen from Figures 9 and 10, the inner sleeve of the base 54 defines a receiving passageway extending through the sleeve 54 and, in conjunction with the surrounding collar 44, defines a passageway extending completely through the base 30. A receiving passage through the locking base 30 is adapted to receive the spout 34, as described in detail below, on the top of the inner base of the locking base 54, around the inner edge of the annular platform 40, is an annular sealing flange60 . The sealing flange 60 is located axially outwardly of at least a portion of the length of the receiving passageway through the base 30. In the preferred embodiment, the sealing flange 60 is located at the axially outer end or upper end of the length of the passageway. The sealing flange 60 extends radially from a peripheral portion of the upper end of the receiving passage, defined by the inner sleeve 54, and the sealing flange 60 has an annular seating surface defining an annular seating surface. top opening in the receiving passage.

Inner sleeve 54 and sealing flange 60 are adapted to receive portions of nozzle 34. For this purpose, inner sleeve 54 defines a generally cylindrical inner surface which includes at least one eccentric groove or cam track 70 (Figure 10). In the preferred embodiment, there are three eccentric grooves or tracks 70. Each groove or trail 70 is located axially into the sealing flange 60. Preferably, the camshaft 70 is in the shape of a channel, which opens radially inwardly. and extending in part of the way around the inner circumference of the inner sleeve 54 as a part or segment of a rotary spinel. The three cam tracks 70 are, in the preferred embodiment, equally spaced around the inner surface of the inner closure sleeve 54.

As can be seen from Figures 10 and 15, associated with cam lock 70 is an axially oriented notch 71, which is located at a predetermined circumferential location at an associated cam lock end 70 to accommodate the installation of nozzle 34. , as described below. Each notch 71 has an axially inwardly open end, and one side has a curved advancing surface 75 (Figures 10 and 15). Each notch 71 has an end axially for terminating in a radially inwardly extending ramp 77 (Fig. 15), which is adjacent to, but slightly separated from, the excentric trail 70. With reference to the trail of 70, illustrated in Figure 10, each cam track 70 may be considered, in the preferred embodiment, as extending in a partially helical configuration 3609 about the inner sleeve of the closure base 54 between a first end 81 and a second end 82. The associated notch 71 is located adjacent the first end 81 of the eccentric notch 70.

Also, in the preferred embodiment, the inner closure base sleeve 54 defines a first rib 91, projecting toward the cam 70 near the first end 81, and defines a second rib 92, projecting toward the end. cam notch 70 near second end 82. Ribs 91 and 92 provide a tactile feel and / or audible click, indicative of start and end positions of nozzle 34, during user operation of it, as explained in more detail below.

In the preferred embodiment illustrated, when a cover 32 is provided and when cover 32 is connected to lock body 30 with a hinge 31 (Figure 9), hinge 31 may be of any suitable type. One form of a joint 31 which may be advantageously used is the type of locking action described in U.S. Patent 6,321,923. Other types of joints may be used. In some applications, the hinge may be completely omitted, and the cover 32 need not be connected at all to body 30. In other applications, it may be desirable to omit the cover entirely.

When a cover, such as cover 32, is employed, it may be desirable to provide a conventional (not shown) engaging lip along part or parts of the lower edge of cover 32, and to provide a flange or groove of conventional co-operative engagement (not shown) around a portion or parts of the locking body platform edge 40. When the cover 32 is closed, the cover engaging edge extends beyond the body engaging lip , to provide coupling by coupling. To facilitate opening of the cover 32, it may include an indentation (not shown) for operation with a finger lift or thumb lift (not shown), and the lock body 30 may also define a finger receiving recess (not shown). or a thumb recess recess (not illustrated).

The moving spout 34 will be discussed below with reference to Figures 9, 13 and 14, among others. Referring to Figure 9, the spout 34 may be characterized as having an axially inner portion 101, a small diameter intermediate portion 102 and an axially outer portion 103.

The axially outer portion 103 is a compressible discharge end having a pair of diametrically opposed lugs 105 (Figure 9), which can be held by the user to twist or rotate the spout 34 (in the direction of rotation indicated by the arrows 100 visible in the Figures 1, 2, 11, 16 and 17 nautical 34, as described in detail below).

The inner part of the nozzle 34 is hollow and can be characterized by defining a dispensing passageway extending through the nozzle. The intermediate part of the nozzle 102 has a peripheral sealing surface108 (Figures 7, 8 and 10), which is adapted to be sealingly coupled by the sealing surface of the locking base flange62. The sealing coupling between surfaces 62 and 108 provides a liquid tight seal under static conditions, as well as when the spout rotates nozzle 34, as discussed below.

The innermost part of the nozzle 101 at the axially end within the nozzle 34 defines at least one piercing member 120 (Figures 13 and 14) for perforating the liner 28 as described in detail below. In the preferred embodiment illustrated, two piercing elements 120 are provided at diametrically opposed locations in the most internally biased part 101. In the preferred embodiment, each piercing element 120 includes four surfaces 121, 122, 123 and 124, which are generally in one location defining an end. narrow, edge or point 126.

As can be seen from Figures 13 and 14, at least one cam follower 130 protrudes radially out of the dabic bottom 101. In the preferred embodiment, there are three cam followers 130 equally spaced around the circumference of the bottom of the cam. spout101. As noted in Figure 13, each cam follower 130 includes an axially outwardly advancing surface 136 to accommodate the insertion of the nozzle 34 into the base of the closure 30 as described below. Each cam follower 130 has a generic configuration of a prismarectangular, when viewed in cross section (Figure 13), with a "severed" corner defined by the axially outwardly advancing surface, further 136. Each cam follower 130 is adapted to be received on one of the eccentric tracks 70. For this purpose, each eccentric follower 130, when viewed at a lateral elevation, preferably conforms to the arc of a segment of a propeller to be received it as a joint in the channel of one of the helical eccentric tracks 70.

In the preferred embodiment, the spout 24 is adapted to receive the valve 36. In alternative embodiments (not shown), the particular valve 36, or any other type of valve, need not be employed.

In the preferred embodiment employing valve 36, the axially outer end portion of the nozzle 103 includes an annular lip 142 and an axially inwardly extending annular wall 144. Part of the fluid substance dispensing passage is defined by the annular wall 144. The dispensing passageway within the upper part of the annular wall 144 is protected by four arms 148 extending radially into the annular wall 144, as shown in Figures 11 and 14 and joined to a central part. 150

The axially distal end into the annular wall144 defines a generally frusto-conical surface 154 (Figure 13), which functions as an annular inwardly angled surface or clamping seat to couple the peripheral portion of valve 36, as explained in detail. Next.

Valve 36 is adapted to be mounted on the closure nozzle 34 as shown in Figure 8. Preferred form of valve 36 is a flexible, pressure actuatable slit-type valve which is retained at the inner portion of the nozzle. 34 by means of the retaining ring 38 as described in detail below.

Valve 36 is preferably molded as a one-piece structure of material that is flexible, docile, elastic and resilient. This may include elastomers, such as a synthetic thermoset polymer, including silicone rubber, such as silicone rubber sold by Dow CorningCorp. in the United States under the trade name D.C. 99-595-HC. Another suitable silicone rubber material is sold in the United States under the Wacker designation 3003-40 by Wacker SiliconeCompany. Both of these materials have a hardness rating of 40Shore A. Valve 36 may also be molded from other heat-rigid materials or other elastomeric materials, or from thermoplastic polymers or thermoplastic elastomers, including those based on materials such as propylene, ethylene thermoplastics , urethane and styrene, including their halogenated counterparts.

In the preferred embodiment illustrated, valve 36 has the configuration and operating characteristics of a commercially available valve design as described in U.S. Patent 5,676,289, with reference to valve 46 described in U.S. Patent 5,676,289. Operation of this valve type is further described with reference to the similar valve, which is defined by reference number 3d in U.S. Patent 5,409,144. The descriptions of these two patents are incorporated herein by reference, at the relevant point and at a point not inconsistent with it.

Valve 36 is flexible and varies in configuration between: (1) a closed, resting position (as shown closed in a vertical package in Figures 10 and 11); and (2) an open, active position (not shown). Valve 36 includes a flexible central part or head 160 (Figures 8 and 10). When valve 36 is not actuated, head 160 has a concave configuration (when viewed from the outside of the closing spout 34). The head 160 preferably has two mutually perpendicular flat intercepting dispensing slots 162 of equal length which jointly define a normally closed dispensing hole. Intercept slits 162 define four equally sized flaps or petals, generally sector-shaped in the concave central head 160. The abutments open out of the intersection point of slits 162 in response to a greater pressure differential across the valve. 36, when the differential depression is of sufficient magnitude - in the well-known mode described in US 5,409,144. Valve 36 may be molded with slots 162.

Alternatively, the valve slots 162 may be subsequently cut into the center head 160 of valve 36 by standard conventional techniques.

As noted in Figure 8, valve 36 includes a skirt or sleeve 164 extending from the central wall or head of valve 160.

At the outer end of the sleeve 164 is a thin annular flange 168 (Figure 8) that extends peripherally of the sleeve 164 in an angled reverse orientation when the valve 36 is at rest, not actuated. The thin flange 168 is joined with a much thickened, raised peripheral flange 170 which generally has a dovetail-shaped cross-section (as seen in Figure 8).

To accommodate the valve seat 36 in the spout 34, the dovetail valve flange detop surface 170 has the same frusto-conical configuration and angle as the dabica frusto-conical surface or seat 154. The other surface (i.e. the surface valve flange 170 is secured by the retaining ring 38 (Figures 8 and 9). Retaining ring38 includes an upwardly tapered, tapered retaining surface172 (Figures 8 and 9) for coupling the axially inner surface (i.e. the bottom surface) of the valve flange 170 to an angle corresponding to the angle of the flange. inner surface, adjacent to valve flange nipple tail configuration 170.

The peripheral portion of the retaining ring 38 includes an outwardly projecting flange 178 (Figures 8 and 9) for compression engagement with the annular lip 142 (Figures 8 and 13), which projects radially inwardly. Before the nozzle 134 is installed in the base of the closure 30, valve 36 may be inserted into the open bottom end of the nozzle 34 together with the retaining ring38. The valve flange 170 is temporarily deformed as the valve 36 is pushed past the nozzle edge 142 with ring 38, and the valve flange 170 is seated against the surface or sediment of the nozzle 154. The retaining ring 38 may It is also pushed past the retaining lip 142, because there is sufficient flexibility in the retaining ring 38 and / or spout 34 to accommodate temporary, elastic deformation of the components as the retaining ring flange Retention 178 passes through and beyond the nozzle lip 142 to create a snap-fit coupling that compresses or tightens valve flange 170 against the tapered surface of the nozzle 154 (Figure 8). This allows the adjacent region of the inner surface of the valve sleeve 164 to be substantially open, free and unimpeded to accommodate the movement of the valve sleeve 164, as described below.

In the alternative embodiments considered (not shown), valve 36 can easily be attached to a single unitary mounting fitting spout 34 or otherwise attached to spout 34 by various means including stamping, coining, gluing, ultrasonic welding, etc. In another alternative embodiment considered (not shown), the closing spout34 may be molded to form a generally rigid unitary structure, then the valve 36 may be injection molded twice into the spout 34 (or optionally at the distal end, part thereof). nozzle 34), without the need for a retaining ring 38.

When the valve 36 is mounted within the particular turbid form 34 shown in Figures 8 and 11 -14, the center head 160 of the valve 36 is retracted within the retaining ring 38. In the preferred embodiment, the surface The outside of the valve head 160, in the center of the slots 162 (Figure 8), is below the clamping surface 154 of the spout 34 when the valve 36 is closed. However, after the membrane 28 is opened, as described below, and when the inner portion is then pressurized (and typically also inverted) to dispense the contents by valve 36, then the valve head 160 is forced out. from its retracted position (shown in Figure 8) towards the outer end of the package and beyond the retaining ring 38.

To dispense the product, the membrane 28 is first opened as described below, and the package is then typically downwardly inclined, or is completely inverted (and also tightened if the container 22 is of the compressible type). A compressible container 22 may be compressed to increase pressure within the container 22 above ambient external atmospheric pressure. This forces the product into the container 22 in the direction of and against valve 36, and this forces the valve 36 from the recessed or retracted position (shown in Figure 8) to an outwardly extending position (see , for example, the forced extending position of valve 46 is substantially identical in Figure 5 of US5,676,289 (which also shows valve 46 in the retracted rest position in dashed lines in Figure 5 and shows valve 46 in extended position in lines Figures 2 - 4) The outward displacement of the central head 160 of valve 36 is accommodated by the movement of the relatively thin flexible sleeve 164. The sleeve 164 moves from a resting position inwardly to a pressurized position; shifted outward, and this occurs by glove 154 "rolling" along itself outwardly towards the outer end of the package.

However, when the internal pressure becomes sufficiently high after the valve head 160 has been moved outward to the fully extended position, the slits 162 of the valve 36 open to disperse the fluid substance (not shown in the figures). The fluid substance is then expelled or discharged through the open slits 162.

The dispensing action discussed above valve 36 in the preferred illustrated form of a compressed type package with a lid32 will typically occur only after: (1) the lid 32 has been moved to the open position (Figure 7 ); (2) membrane 28 has been opened as described below; (3) the packaging has been tilted downward or inverted; and (4) the container 22 is compressed. Pressure on the inner side of valve 36 will cause valve 36 to open when the differential between internal and external pressures reaches a predetermined amount. Preferably, valve 36 is designed to open only after a sufficiently large pressure differential has been acted upon by valve 36 - as by applying sufficiently increased pressure being applied to the interior of container 22 (e.g., by compressing the valve). container 22 with sufficient force - if container 22 is not a rigid container), or as by applying sufficiently reduced pressure (i.e. vacuum) to the outside of the nozzle 34.

Depending on the particular valve design, open valve 36 may close subsequently, when the pressure differential decreases, or valve 36 may remain open, even if the pressure differential decreases to zero. In the preferred embodiment of valve 36, illustrated for the preferred embodiment of the system shown in Figures 1 - 20, valve 36 is designed to close when the pressure differential decreases to or below a predetermined quantity. Thus, when the pressure of pressure in the container 22 is released, the valve 36 closes and the valve head 160 retracts to its resting position, retracted into the nozzle 34.

Preferably, valve 36 is designed to support the fluid weight within valve 36 when container 22 is completely inverted. With this design, if container 22 is inverted while valve 36 is closed, but container 22 is not being compressed, then the mere weight of the fluid substance in valve 36 does not open or hold valve 36 open. Moreover, if the container 22, in which the closed valve 36 is mounted, inadvertently tilts after the lid 32 and the membrane 28 have been opened, then the product still does not flow out of valve 36, because the valve 36 remains closed.

In a preferred embodiment, valve petals 36 open outward only when valve head 130 is subjected to a predetermined pressure differential acting in a gradient direction, wherein the pressure on the inner surface of the valve head exceeds by a predetermined amount. - the local ambient pressure on the external surface of the valve head. The product may then be dispensed by the open valve 36, until the pressure differential falls below a predetermined magnitude, and the petals then close completely.

If the preferred shape of valve 36 has also been designed to be flexible enough to accommodate the venting inlet of the atmosphere, as described in detail below, then the closing petals may continue to move inward to allow valve 36 open inward as the direction of the pressure differential reverses and the pressure on the outer surface of the valve head exceeds the pressure on the inner surface of the valve head by a predetermined magnitude.

For some dispensing applications, it may be desirable for valve 36 not only to dispense the product, but also to accommodate venting of the ambient atmosphere (e.g., to allow a compressed container (on which the valve is mounted) to return to its original shape. ). This ability to receive ventilation may be provided by selecting a suitable material for valve construction, and by selecting the appropriate thicknesses, shapes and dimensions for the various valve head portions 160 for the particular valve material and size of valve. global valve. The shape, flexibility and resilience of the valve butt, and in particular of the petals, may be designed or established so that the petals will deflect inwardly when subjected to a sufficient pressure differential acting on the head 160 and at the same time. a gradient direction, which is the reverse or opposite of the pressure differential gradient direction, during dispensing of the product. This reverse depression differential may be established when a user releases a resilient, compressed container 22 in which valve 36 is mounted. The resilience of the container wall (or walls) will cause the wall to return in the direction of the larger, normal volume setting. The slight increase of the inner part of the container will cause a transient, temporary drop in internal pressure. When the internal pressure drops sufficiently below the external ambient pressure, the pressure differential across valve 36 will be large enough to deflect the petals of the valve inside to allow ventilation to enter the ambient atmosphere. In some cases, however, the desired rate or amount of venting inlet may not occur until the compressed container is returned to a substantially vertical orientation, which allows the product to flow under the influence of gravity away from valve 36 at the same time. direction of the container bottom.

It will be appreciated that the valve dispensing orifice may be defined by structures other than the slots 162 illustrated. If the hole is defined by slits, then the slits may take many different shapes, sizes and / or configurations, according to those desired dispensing characteristics. For example, the hole may also include five or more slots.

The dispensing valve 36 is preferably configured for use in conjunction with a particular container and a specific type of product to achieve the desired exact dispensing characteristics. For example, the viscosity and density of the fluid product may be factors in making the specific configuration of valve 36 for liquids, such as the shape, size and mechanical strength of the container. The hardness and hardness of the valve material, and the size and shape of the valve head 160 are also valve characteristics relevant to the desired dispensing characteristics, and can be adjusted with both the container and the substance to be dispensed from it.

Preferably, valve 36 and the inside of nozzle 34 are both circular in shape, and valve 36 and nozzle 34 are aligned along a common longitudinal axis. The central intersection of valve slots 162 is at the longitudinal axis. The nozzle 34 may be characterized as having a discharge flow direction axially outwardly along the axis.

In the preferred embodiment, the structure of the spout arms 148 and disc 150 (Figures 13 and 14) is located above valve 36 to protect valve 36 when valve 36 is both closed and open. Referring to Figure 7, the protective structure of the arms 148 and disc 150 is located far enough away from valve 36 so as not to interfere with valve opening 36 or adversely affect fluid substance dispensing. The new closure system may be provided and used with a different type of valve (for example, a mechanically actuated valve) or without any valve if desired.

Dispensing described above of a fluid substance by the spout34 is facilitated by locating the spout 34 in the closure body or base30. In particular, with reference to Figure 7, it may be noted that the spout 34 is arranged at least partially in the receiving passage in the base 30, and that the graspable discharge end of the spout 34 projects axially out of the base 30 , in addition to the sealing coupling between the nozzle sealing surface 108 and the sealing surface of the closure base 62 on the annular sealing flange 60.

The spout 34, with valve 36 and retainer 38 already assembled as described above, may initially be installed at the base of the closure 30 in a non-puncturing location axially outward (Figures 1 - 7). The initial non-puncturing site of the nozzle 34 may be conveniently defined in relation to the subsequent installation of the complete closure 20 in the container 22 over the membrane or liner 28 (which had previously been sealed at the top of the neck of the container 26) wherein nozzle piercing elements 120 are above membrane 28. Membrane 28 may be placed in container 22 in the container filling line after container 22 has been filled with the fluid substance and then thermally sealed in the container prior to installation of the closure. 20. If the membrane 28 is a coating comprising a metal foil layer, the metal foil coating 28 may be thermally sealed to the neck of the container by well known induction heating or conduction heating processes. Other thermal bonding or adhesive bonding processes may be used if the coating 28 does not contain a metal foil.

The present invention facilitates the installation of the nozzle 34 (with valve 36 and the retaining ring 38 mounted thereon) at the non-piercing location of the closure 30, so that the perforating members 120 of the nozzle34 will initially be spaced above the nozzle. top surface of the liner or membrane 28, when the closure 20 is subsequently screwed into the container 22 on the membrane 28. With reference to the locking base 30 shown in Figure 10, it should be noted that each axially oriented slot 71 associated with with one of the cam tracks 70, is located adjacent the upper end of the cam track 70. To start the nozzle 34 installation (containing valve 36 and the retaining ring38), the nozzle 34 is positioned at the bottom open end of the cam base. 30, and the spout 34 is then rotated as necessary to position each of the cam followers 130 (Figures 11-14) in axial alignment with a slot 71.

In an automatic assembly process, the nozzle 34 (with valve 36 and the retaining ring 38 mounted thereon) can be tightened by a conventional installation clevis to rotate the nozzle 24 while also moving the nozzle 34 axially to the base of the closure 30 under a suitable axial force (typically generated by an axially charged spring assembly). Referring to the inverted closure base 30 shown in Figure 15, the nozzle (with valve 36 and retaining ring 38 mounted thereon) is rotated (automatically with the installation mandrel or manually) in a counterclockwise direction as seen from the bottom downward view 30 in Figure 15. Counterclockwise rotation causes cam followers 130 (Figure 14) to move along the end surface 56 of the inner sleeve 54 until each cam follower 130 reaches the arcuate advancing surface 75 of one of the notches 71. Because an axial force is simultaneously applied to the rotating nozzle 34 (by an automatically installed chuck). or eccentric followers 130 slide along the feed surfaces 75 and into the notches 71. Further rotation in the counterclockwise direction (as seen from looking downwards in Fig. 15) is prevented by Stop of each notch 71, opposite the feed surface 75. An automatic installation chuck will employ a suitable torque limiting rotation drive system, which will prevent excessive torque to be applied to nozzle 34 to prevent bending. or other damage to the components as the plunger 34 is pulled axially to the base of the closure 30, oriented by cam followers 130 in the notches 71.

When the cam followers 130 reach the inwardly extending ramp radially 77 (Figure 15) at the end of each notch 71, each cam follower 130 moves along ramp 77 and to the upper end of track 70. associated. There is sufficient flexibility in parts of spout 34 and / or parts of locking base 30 to accommodate elastic, temporary buckling 34 and / or locking base 30 to a degree sufficient to allow cam followers 130 to slide upwards. by ram 77 and into the cam tracks 70. This arrangement ensures that the tip 34 (with valve 36 and the retaining ring 38 mounted thereon) is initially located in its non-puncturing position elevated within the base closure. 30 so that the nozzle piercing members 120 are initially located above the liner or membrane 28, as shown in Figure 8, when the closure 20 is subsequently screwed into the container 22.

In addition, in the preferred form of the invention illustrated in Figure 10, the ribs 91 adjacent the upper end of each excentric track 70 may be designed to provide some resistance to spout 34 (counterclockwise, as seen by looking at lower on the outer top portion of the closure base 30 and spout 34 in Figure 2). If the user were to rotate the nozzle 34 counterclockwise, moving downwardly from the top of the nozzle 34 and the base of the closure 30 in Figure 2, then the initial resistance offered by the upper rib 91 (Figure 10 ) will have to be overcome, and as the nozzle follower 130 of the nozzle passes through rib 91, a tactile sensation or audible click will be indicative of the rotation of the non-perforating, entirely non-perforating nozzle 34. high. Similarly, if the user continues to rotate the spout 34 counterclockwise, as seen from the bottom of the spout 34 and the bottom of the closure 30 in Figure 2, then the cam followers 130 of the Finally, the nozzle will eventually engage the ribs 92 (Figure 10) at the lower ends of the eccentric tracks 70. As the cam followers 130 pass the lower ribs 92, and then pass beyond the lower ribs 92 in the counterclockwise direction of rotation, the user will hear an audible click, and the user will be able to continue to rotate only until the cam followers 130 abut the lower ends of the eccentric tracks 70 at the fully lowered location of the nozzle 34 (which is the most axially positioned position). within the nozzle 34 relative to the base of the closure 30. and at a local location the nozzle 120 cutting elements will project significantly below the elevation of the membrane 28 if (20 is mounted in a container on this membrane 28).

After the closure 20 is properly mounted with the spout34 initially located at the fully raised non-puncturing site, the closure 20 may be screwed onto the top of a container (e.g. container 22) which has been filled with a sealed fluidic substance. with a coating (e.g. membrane 28).

The operation of closing 20 to open the sealed container with membrane 28 is described below with reference to some of the figures. Figures 1 and 8 show the nozzle 34 in the initial installation orientation34 at closure 20, where the nozzle 34 is at the maximum elevation location (i.e., more axially outwardly) relative to the closure base 30, and the piercing elements 120 are at their furthest distances (e.g. above) from membrane 28. Figures 17 and 18, on the other hand, show spout 34 in the most axially inward location relative to the closure base 30.

When the nozzle 34 is first rotated by the user counterclockwise from the position shown in Figure 1 (the highest non-puncturing position) to the lowest position shown in Figures 16-20, the nozzle 34 and the piercing elements 120 therein (Figures 19 and 20) move downwardly (axially inwardly) so that the membrane 28 is initially pierced by the point 126 of each piercing element 120. As the spout 34 continues to be rotated by the user, to open the membrane 28 (by rotating the nozzle 34 counterclockwise, viewed from the top down of the nozzle 34), the piercing members 120 move in a clockwise direction, viewed from Figure 20 from inside the container looking upwardly at membrane 28. The points 126 of the piercing members 120 move more axially inwardly to and through membrane 28 as each piercing element 120 engages. moves in a circular arc (Figure 20 ). As the piercing elements 120 move to and from member 128, the width of the piercing, tearing, cutting or opening produced by each piercing element 120 becomes wider because each piercing element 120 increases its thickness with increasing upward (i.e., axially outward) distance from point 126 (see, for example, view from end of cutting member 120 visible in Figure 12). Perforation and cutting of membrane 28 by each member 120 creates a tab 190 on membrane 28. Each tab 190 is narrower at its free distal end and widens away from the free distal end. The width of the tab increases to the maximum width resulting from coupling with the maximum width of the piercing member 120 at the top of the piercing element 120, where the piercing element 120 joins the rest of the nozzle 24. In the preferred embodiment illustrated As each piercing element 120 moves in a path arcuate by membrane 28, each piercing element 120 essentially "revolves" tab 190 of a 45 degree long circular arc cut or opening in membrane 28.

The tabs 190 remain connected to the rest of the membrane 28, and thus no separate pieces of scrap are created. The opening, or tearing, or cutting formed by each piercing element 120 in membrane 28 is preferably long enough to extend shortly after the length of piercing element 120, so as to provide sufficient flow passage for the subsurface. fluidance to be dispensed - even if the piercing elements 120 remain in the lowest position extending to and across a membrane part 28. Thus, the user does not need to twist the nozzle 34 and the reverse rotation direction to move the nozzle. 34 back to the non-piercing site, entirely elevated. The drill spout 34 may be left in the fully lowered location, and sufficient flow may pass through the cut, tear or open regions of the membrane 28 adjacent the rear ends of the piercing elements 120.

The length of each cam track 70 may be designed to facilitate the creation of a sufficiently long aperture in membrane 28 to accommodate dispensing of the fluid substance by the apertures in membrane 28. A highly viscous substance may require a pathway arrangement of longer eccentric to provide longer circular arc cuts or openings in the membrane 28 to provide a larger flow area. A less viscous substance may not require this long eccentric track layout. Alternatively, or additionally, the thickness of the upper portions of the cut members 120 may be increased to provide wider cuts or openings in the membrane 28.

In an alternative design currently considered (not illustrated), only one cam track 70, rather than three cam tracks 70, needs to be provided. More than three cam tracks can also be provided. It will also be appreciated that only one cam follower, or more than three cam followers, may be employed in alternative embodiments (not shown). However, in the currently preferred embodiment, illustrated in Figures 1 - 20, three cam tracks 70 are employed at the base of closure 30 to receive three cam followers 130 at spout 34, and this arrangement has been found to provide good balance and operation. . It should also be considered that the locations of the eccentric tracks 70 and the eccentric followers 130 may be reversed. That is, in an alternate embodiment (not shown), a cam track or tracks may be provided on the radially outer surface of the nozzle 34, and the cam or follower of the cam (eg pins or other protrusions) may extend radially into the inner sleeve of the base of the spout closure 54.

In the alternative embodiment currently considered (not shown), only one piercing element 120 may be provided. In other designs, three or more piercing elements 120 may be provided instead of the two elements employed in the preferred illustrated embodiment.

Referring to Figure 8, it will be appreciated that the spout 34 is prevented from being removed from the locking base 30 by the overlying coupling of the locking base flange 60 with the enlarged bottom portion101 of the spout 34. In addition In the preferred embodiment, in which the locking base 30 is also provided with at least one claw tooth 50 (Figure 15), to engage the ratchet teeth 29A in the container (Figures 6 and 9), the closure 20 cannot be locked. easily removed by the user. In this way, the packaging remains firm and relatively resistant to tampering.

If someone has twisted spout 34 to puncture membrane 28 and then rotate spout 34 back to the raised position, a subsequent user will be unable to tell if membrane 28 had been punctured by initial tipping over the container and / or squeeze the container to check if the fluid substance can be dispensed. If the fluid substance can be dispensed, this will provide an indication that the membrane 28 had previously been disrupted.

In the preferred embodiment illustrated in Figures 1 - 20, wherein a pressure actuated valve 36 is fitted to the spout 34, in some applications it may not necessarily be necessary to provide a cap 32. However, to maintain dirt or other materials Strangers outside the dispensing spout 34, the use of a cap 32 will generally be desirable.

The spout 34 in the closure system of the present invention can be operated easily and effectively to pierce (e.g., pierce, break, break, tear, cut, etc.) membrane 28, which is initially in place to maintain the integrity of the fluid substance. that will be discharged. The closure system does not require the complete removal of a separate element (such as membrane 28) prior to content discharge - thereby eliminating the possibility of losing an important component of the dispensing system.

Embodiments of the present invention, in which spout 34 (and retaining ring 38 of valve 36, if employed) and locking base 30 are separately fabricated components (as in the embodiment illustrated in Figures 1 - 20), can be relatively easily assembled by manufacturer.

The system of the present invention accommodates use with packaging wherein the membrane 28 is sealed to and by the top of the container 22, as well as with other optional designs, wherein the membrane 28 may be attached to the underside. of the base of the closure 30 instead of or in addition to the top of the container 22.

When the present invention employs the optional valve 36 (as in the preferred embodiments illustrated in Figures 1 - 20), valve 36 provides further advantages, such as preventing fluid from spilling if the package is opened by inadvertently tilting.

Also, valve 36 may provide more control of the dispensing process (including minimizing, if not eliminating, the nozzle fluid drip 34, after the dispensing process has been terminated by the user). Valve 36 may also function to eliminate or minimize contaminant ingress - even though no external cap 32 is provided for closure at the top of the nozzle 34.

The dispensing closure system of the present invention accommodates the use of membrane 28, such as a conventional coating, without requiring removal of the container or system coating. The dispensing closure system of the present invention allows the user to conveniently open a membrane (such as a conventional coating 28) without having to manipulate the package in order to first expose the membrane and without having to remove it. the perse membrane. The membrane or casing, after drilling, remains in the system so as not to present a chip formation problem or a choking problem for children.

It will be readily apparent from the foregoing detailed description of the invention and its illustrations that many other variations and modifications may be made without departing from the true spirit and ambit of all new concepts or principles of this invention.

Claims (18)

1. Dispensing closure for a container having an opening to the inner part of the container in which a fluid substance may be stored, and in which a membrane is interposed between the container and the dispensing closure, said dispensing closure comprising (A) a base for extending said container into said container opening, said base defining (1) a receiving passage through the dictabase; and (2) an annular sealing flange which: (a) is located axially outwardly of at least part of the length of said receiving passageway, and (b) extends radially into a peripheral portion of the receiving passageway to define a opening for said receiving passage (B) a movable spout (1) which is at least partially disposed in said base receiving passage; (2) has a dispensing passage extending through said spout; (3) has a compressible discharge end which: (a) is located at one end axially outwardly of said spout; and (b) protrudes axially out of said base; (4) has a peripheral sealing surface which is sealingly coupled by said annular sealing flange of the base; and (5) has a puncturing member at one end axially into said nozzle (C) a cam track at one of said base and nozzle axially into said annular sealing flange; and (D) a cam follower which is: (1) located on one another of said base and spout; and (2) coupled to said cam track, wherein said squeezeable discharge end of the nozzle may be clamped to rotate said nozzle to axially move it from a non-puncturing location axially outwardly to a puncture site, axially inward. A closure according to claim 1, wherein said closure further includes a lid hingedly attached to said base to move between (1) a closed position at the top of said base about said spout, and (2) a position in which said discharge end that can be clamped from said spout is exposed. A closure according to claim 1, wherein: (A) said closure base includes a body which is initially detached from, but subsequently may be secured to, said container around the opening of the container; and (B) said closure is adapted for use with said membrane in the form of a sealed liner in the container over the container opening. A closure according to claim 1, wherein: (A) said closure base includes a body which is initially detached from, but subsequently may be secured to, said container around the opening of the container; and (B) said closure base is adapted for use with the diamembrane in the form of a coating which may initially be sealed on said closure base before said closure base is attached to said container. A closure according to claim 1, wherein said squeezable discharge end of the nozzle has an external configuration defining two oppositely directed tabs. A closure according to claim 1, wherein: said closure base is adapted for use in a container having: (1) a neck defining said container opening; and (2) a thread in said neck; and said closure base has a thread for coupling said container neck thread, to allow said base to be screwed into said container neck. A closure according to claim 6, wherein: said closure is adapted for use with an anti-rotation ratchet tendon container located at the circumference of said container neck axially into said container neck thread and said base of the container neck; The closure has at least one clamping tooth to: (1) bend after said recipient anti-rotation ratchet teeth when said base is screwed into said container; and (2) contacting at least one of the container anti-rotation ratchet teeth, when torque is applied to said base in the direction of de-saturation rotation, thereby preventing the unscrewing of said base from said container. Closure according to claim 1, wherein the closure dithabase includes an internal female thread for coupling a corresponding male thread to a container. A closure according to claim 1, wherein: said cam follower extends radially outwardly into the spout, said cam follower has an axially inwardly advancing surface extending inwardly toward the radial direction. with an increasing distance in the axially outward direction said lock base has an inner sleeve which: (1) is located axially inwardly of said base annular sealing flange (2) extends axially inwardly; and (3) has a cylindrical inner surface that defines at least in part said base receiving passage, said cam track is defined in said inner surface of said inner base of the closure, said inner sleeve has an axially oriented notch located: (1) axially into said cam track; and (2) at a predetermined circumferential location, said notch having an axially open end inwardly for receiving said cam follower during installation of the dictabic on said base; said notch having an axially outwardly terminating end. on a ramp extending radially inwardly adjacent to but separated from said cam track; at least one of said base and nozzle is sufficiently resilient to accommodate the insertion of said nozzle into said base with said cam follower in said notch to force said cam follower against and after said ramp in said cam. eccentric trail. A closure according to claim 9, wherein: said cam track extends in a partially helical configuration of less than 360e around said inner locking sleeve between a first end of the cam track and a second one. end of cam track, said inner sleeve of closure base defines: (1) a first rib projecting to said cam track near said first end; and (2) a second rib protruding into the camshaft proximal to said second end, at least one of said closure base and spout being sufficiently resilient to accommodate the movement of said cam follower after each rib when said spout is turned with sufficient torque; and the movement of said cam follower from one end of said cam track after each rib provides at least a tactile sensation indicative of the start and end position of the cam follower as the cam follower is moving from one end of said cam track to the other end of said cam track. Closure according to claim 1, for common use container having an annular top end defining: (1) an aperture occluded by said membrane in the form of a sealed coating on said annular top end; and (2) a male thread, external around said opening, and in which: said closure is a dispensing closure, which is detached from but subsequently affixable to said container around said container opening. said base of the closure has a generally cylindrical hollow inner collar having an internal female thread to threadably engage said external male thread in said container; said base includes an annular platform at the top of the housing; ditabase, around said receptor passageway; and said squeezeable discharge end of the bicase extends outwardly beyond said platform. A closure system as defined in claim 1, wherein said piercing element includes four surfaces that converge to a blind spot. A closure according to claim 1, wherein the closure tab further includes a dispensing valve which: (1) is mounted on said nozzle in said nozzle discharge passage to locate the ditab valve adjacent to said end. discharge pressure can be tightened to the spout; (2) comprises a resilient, flexible material; and (3) defines at least one normally closed dispensing orifice which opens to allow flow through it in response to a pressure differential by said valve. A closure according to claim 13, wherein: said valve has a valve head; and said dispensing orifice is defined in said valve head by a plurality of slots extending (1) through said valve head from an external side to an internal side, and (2) laterally from a common source such that the petals are defined by said slits, wherein said orifice is capable of deflecting outwardly of said petals, when the pressure on the inside of said valve exceeds the pressure on the outside of said valve by a predetermined degree. A closure according to claim 13, wherein said valve dispensing orifice is closed when the pressure in the inner part of said valve is substantially equal to the pressure in the external part of the valve. A closure according to claim 13, wherein: said valve is a self-closing valve, said valve opens outwardly when the pressure against the side of said valve faces inwardly. from the container, exceeds the pressure acting against the side of said valve, exposed to the ambient atmosphere, by a predetermined degree; and said valve returns from an open condition to a closed condition, after the pressure acting on the side of the valve, turned towards the inner part of the container, decreases sufficiently. A closure according to claim 13, wherein: said valve has an annular flange, said nozzle defines a generally annular seat generally facing away from said nozzle-clamping discharge end; and said closure further includes a retaining ring having a part coupled with said spout to retain said valve in said spout, wherein said valve annular flange is secured by said retaining ring against said annular seat in said spout. A closure according to claim 17, wherein: said retaining ring is in a snap-fit coupling with said spout, said valve annular flange has a dovetail cross-section defining a frusto-conical outer surface and a frusto-conical inner surface, said spout seat is a frusto-conical surface engaging additions frusto-conical outer surface of said annular flange of the valve; and said retaining ring has a frusto-conical clamping surface engaging said frusto-conical inner surface of said annular flange to hold said valve annular flange between the retaining ring and said nozzle seat.