GB2525394A

GB2525394A - Self Inflating Balloon

Info

Publication number: GB2525394A
Application number: GB1407064.3A
Authority: GB
Inventors: James Haliburton
Original assignee: Seatriever International Holdings Ltd
Current assignee: Seatriever International Holdings Ltd
Priority date: 2014-04-22
Filing date: 2014-04-22
Publication date: 2015-10-28
Also published as: CN106457051A; EP3134192B1; US20170043271A1; EP3134192A1; WO2015162420A1; CA2983245A1; GB201407064D0

Abstract

A self-inflating balloon 100 comprises an inflatable bag 16 of substantially air impervious material; a container of compressed gas 14; trigger means 22 associated with the container 14 operable to allow gas from the container 14 to inflate the bag 16; and an enclosure 10 in which the bag 16, the container 14 and the trigger means 22 are housed. Opening the enclosure 10 may activate the trigger means 22 or provide access for activation of the trigger means 22. The balloon 100 may additionally comprise an illumination device (26, figures 3 & 4).

Description

Self Inflating Balloon

Technical Field of the Invention

The present invention relates to self-inflating balloons.

Background to the Invention

Balloons are commonly used for decorative or play purposes. Such balloons are usually inflated by air or helium. When inflated by air they may be blown up directly by exhaled breath, or by means of a pump attached to the neck of the balloon or by temporary connection to a canister of compressed air, then sealed in a variety of known ways including knotting or using fastener devices. When inflated using helium, the neck is connected to a supply oithe relevant compressed gas or mixture for a short period until the desired inflation size is obtained, then disconnected and fastened. Use of helium is common to provide balloons for decorative purposes which Iloat. Such helium filled balloons can he retained in position by tethering to small weights or can he allowed to rise to ceiling height. Any suitable lighter than air gas could be used in place of helium.

In the case of helium balloons (hut sometimes in the case of other balloons), the consumer purchases a balloon and the seller inflates it for them. This process of inflation means that sellers are required to safely and legally store cylinders of compressed gas and ensure that sufficient numbers of staff are employed to oversee the inflation process on their premises. In the particular case of balloons inflated with helium, there is a requirement that sellers have a safety certilicate as well as a large amount of empty floor space in which to store the compressed helium cylinder. These requirements mean that selling inflated balloons, particularly inflated helium balloons, is nota viable commercial venture for many stores. Additionally, smaller stores may lack the capital or physical space to invest in compressed gas cylinders and therefore cannot meet the requirements.

Some sellers purchase pre-inflated balloons from a manufacturer. Such pre-inflated balloons are often provided on a balloon stick or in a large box, which can then be bought directly by a customer in a shop or, in the case of online sellers, shipped to the customer in this pre-inflated and packaged state. Shipping and storing pre-inflated balloons in this manner increases transit and storage costs and is an inefficient use of space.

In the case that balloons are purchased deflated, the consumer typically inflates the balloon either directly by exhaled breath, or by means of a pump attached to the neck of the balloon. Both of these methods are time consuming and require physical effort on the part of the consumer.

It is therefore an object of the present invention to at least partially overcome or alleviate these problems.

Summary of the Invention

According to a first aspect of the present invention there is provided a self-inflating balloon comprising: an inflatable bag of substantially air impervious material; a container of compressed gas: trigger means associated with the container operable to allow gas from the container to inflate the bag; and an enclosure in which the bag, the container and the trigger means are housed, wherein opening the enclosure activates the trigger means or provides access for activation of the trigger means.

This thereby provides ahalloon that can he automatically inflated upon activation of the trigger means. A self-inflating halloon according to the present invention would he compact and convenient to sell and ship, and would not require a large storage space. By selling a self-inflating balloon according to the present invention, stores who cannot meet the requirements for selling inflated balloons hy the traditional method would he ahle to provide consumers with a balloon that is quick and convenient to inflate. The self-inflating balloon of the present invention is additionally advantageous in that consumers can purchase the balloon and inflate it at a later time, rather than have it inflated at the time of purchase, offering a longer shelf-life than balloons that are sold inflated.

The gas container may be provided with a container gas valve, through which the compressed gas exits the container. The gas container may be of a similar size and shape to (he fuel tank of an inexpensive cigarette lighter and may be made of plastics ni ateri al. The compressed gas maybe a gas that is lighter than air. In such embodiments.

the gas is preferably helium and/or a mix of helium and other gases. The present invention advantageously enables a safe means of inflating a helium balloon, secure IS storage of helium, and a convenient way of enabling the inflation of a helium balloon without the need for a safety certificate, a suitable space to store or means to safely transport a relatively large tank of compressed helium.

Alternatively, the compressed gas niay be a hydrogenated chlorofluorocarbon compound. Advantageously, this would allow the container of compressed gas to he made of plastics material: This gas requires compression at far lower pressures than carbon dioxide or helium, and can safely and suitably be contained in a low cost container of plastics material similar to the housing of a conventional inexpensive cigarette lighter. Moreover, hydrogenated chlorofluorocarbon compound gases are safe to use and not an environmental hazard.

Alternatively, the compressed gas may be a combination of a gas that is lighter than air and a gas such as a hydrogenated ehlorofluorocarbon compound.

The inflatable bag may comprise a neck portion and a body portion. The neck portion is preferably narrower than the body portion, and provides an elongate inlet channel through which gas can enter the body portion. The body portion may be any suitable shape, including but not limited to spherical or substantially spherical, an oblate spheroid, or a prolate spheroid. In some embodiments, the body portion may substantially conform to the shape of a character or distinctive object.

The inflatable hag may he substantially or partially translucent. In such embodiments, portions of the inflatable bag may be substantially opaque.

The inflatable bag may be made of a lightweight, inelastic and air impervious material such as a biaxially-oriented Polyethylene Terephthalate (BoPET) film (an example of such a material is sold under the trade name Mylar'), or a BoPET film with an Ethylene Viny' Alcohol (EVOI-I) gas barrier layer (an example of such a material is sold under the trade name Heptax'). Preferably, the inflatable bag is made of such a material when the compressed gas is helium, in order that the balloon floats'. The use of an inelastic material for the bag is advantageous in that the bag may be one of many different shapes, including asymmetrical shapes that would be unachievable using a bag that stretches upon inflation. Furthermore, an inelastic hag can he inflated to a greater size than that of an elastic bag using the same amount of compressed gas. This is because an inelastic, non-resilient material exerts less pressure on the gas than a stretched resilient material.

Alternatively, the inflatable bag may be made of an elastomeric film. An elastomeric film is highly flexible, strong, elastic and capable of stretching to allow inflation. An example of a suitable material would be rubber latex or a polyurethane film of the type used for modern condoms. Preferably, the inflatable bag is macic of an elastomeric film of this kind when the compressed gas is a hydrogenated chlorofluorocarbon compound.

Preferably, the neck portion of the inilatable hag is provided with a one-way valve. The one-way valve may be engagable with the gas container valve. In particular, when engaged with the gas container valve, the one-way valve may allow gas to pass through the one-way valve to enter and inflate the hag. The one way valve may he bonded to the inner surface of the neck of the inflatable bag. Preferably, said bond creates a seal such that no gas can pass therebetween. This ensures the one way valve is the offly channel through which gas can enter the hag. Additiona'ly, the one-way valve prevents gas flowing out of the bag.

In some emhodiments, the one-way valve is adapted to he releasahly engagable with the container gas valve. This allows the inflated bag to be released from the gas container when the hag reaches the desired inflation. The releasable engagernentrnayhe achieved by any suitable engagement means. As an example. such engagement means may include but are not limited: to snap fit joining means, a screw mechanism, magnetic means. Releasable engagement may also be achieved using temporary adhesion, for example, the provision of sticky pads that can he pulled apart, or the provision of a perforated film provided to hold the one-way valve and the gas valve in an engaged position, that can be torn by a user to allow release of the valves. Releasable engagement is particularly advantageous when the gas used to inflate the balloon is helium, or another gas that is lighter than air, as it allows the bag to be separated from the relatively heavy container of compressed gas and trigger mechanism, enahhng the hag to float'.

A tether means may be provided between the inflatable bag aud either the container of compressed gas or the enclosure. The tether may comprise an elongate flexible member such as a string, rope, ribbon, or wire. When helium, or another gas that is lighter than air, is used to inflate the bag, the provision of a tether advantageously retains the inliated bag at a predetermined height above the enclosure or container of compressed gas, preventing it from floating' to ceiling height or out of reach.

The container gas valve may he provided with a biasing means operable to urge the valve open, the biasing means opposed by the trigger means. In such embodiments, activation of the trigger means may involve removing the trigger means such that the IS biasing means acts to open the container gas valve. Alternatively, the container gas valve may be provided with a biasing means operable to urge the valve shut. In such embodiments, activation of the trigger means may act against the biasing means to open the container gas valve and when activation ceases the container gas valve reverts to the closed condition.

In some cases, activation of the trigger means may break a gas valve seal.

The trigger means may comprise a pull tab and activation may he achieved by pulling on or removing the pull tab. The trigger means may comprise a push hutton or switch and activation may be achieved by pressing the push button or operating the switch. The trigger means may comprise a sensor operable to receive a control signal and operate the gas valve in response thereto. The sensor may be operable to sense any suitaffle form of control sign including hut not limited to radio frequency and/or infra red signals.

Preferably, the self-inflating balloon additionally comprises an illumination dcvice. The illumination device may comprise any suitable lamp. including but not limited to one or more light emitting diode(s) (LED). In embodiments where the inflatable bag is at east partially translucent, an illumination device allows the balloon to be lit up. In sonic embodiments, where portions of the bag are opaque, light can only permeate through the non-opaque sections. This can be advantageously designed so that offly specific shapes. letters, or characters are translucent and allow light through.

The illumination device may be provided with a power supply, including but not limited to at least one battery, or an energy scavenging means. The energy scavenging means may be any suitable device including but not limited to a photovoltaic cell.

Preferably suitable conducting elements are provided between the power supply and the illumination means. The power supply and the illumination means may he provided within a common housing. Alternatively, the power supply and the illumination means maybe housed separately with the conducting dements therehetween.

The illumination device may be controlled in response to the activation of a trigger means. In some embodiments, the illumination device trigger means may comprise an insulating material initially located between the battery or batteries and the LED, said material being capable of being withdrawn from extending between the battery or batteries. hi such cases, withdrawing the insulating material completes a circuit and causes the LED or LEDs to light up.

Alternatively, the illumination device trigger means may comprise a switch or button. In such cases, activation of the switch or button completes a circuit and causes the LED or LEDs to light up.

Mternatively, the illumination device trigger means may comprise a sensor operable to receive a control signal. The sensor may be operable to detect and receive a control signal and control or trigger the illumination means accordingly. The control signal may he sent from a remote control. In such cases, receiving a control signal causes the sensor to light up the LED or LEDs.

In some embodiments olthe present invention, the inflation trigger means is a'so the illumination device trigger means, such that the bag is illuminated and inflated simultaneously.

In an alternative embodiment, an illumination device trigger means is separate to the inflation trigger means. Such an arrangement advantageously allows the bag to first.

he inflated, and subsequenfly illuminated at a desired later time. This allows the illumination device and the inflation to be activated using different types of tngger means such as, for example, a pull tab of material for the inflation, but a switch orremote sensor control for the illumination.

The illumination means may he provided in the neck of the inflatable hag.

Alternatively, the illumination means may be provided at a distal end of the body of the hag. In such cases, the illumination device may have a projection whereby it is attached to the inner side of the inflatable bag, by a clip. band or 0-ring fitted onto the projection from outside the balloon.

The self-inflating balloon may be provided with an audio player operable to output sounds.

The audio player may be controlled in response to the activation of a trigger means. The audio player trigger means may comprise a switch or button. Alternativdy, the audio player trigger means may comprise a sensor operable to receive a control signal.

In some embodiments of the present invention, the inflation trigger means and/or the illumination device trigger means is also the audio player trigger means. In an alternative embodiment, an audio player trigger means is separate to the inflation trigger means and/or the illumination device trigger means. Such an arrangement advantageously allows the bag to firsi be inflated, and subsequently illuminated or provided with sound at a desired later time. This allows the audio player, the illumination device and the inflation to be activated using different types of tngger means such as, for example, a pull tab of material for the inflation, but a switch orremote sensor control for the illumination and/or audio player.

In some embodiments, the audio player may be provided integrally with the illumination means. In alternative embodiments, the audio player may be provided separately to the illumination means. In such embodiments, the audio player may be provided in the neck portion of the inflatable hag. Alternatively, the audio player maybe provided within the enclosure or with the gas container.

The enclosure may be a box. In such embodiments, the box may be made out of any suitable material, such as paper. card, or plastic. In the case that the inflatable bag is inflated with helium or another lighter than air gas, and has then been re'eased from the gas container, the compressed gas container may remain inside the box. In some embodiments, the compressed gas container may he adhesively honded to the box. The box, including the compressed gas container, may then serve as a weight to prevent the inflated balloon floating' above a desired height. In such cases, the box would serve as a decorative item as well as a weight. The decorative box maybe adapted to form part ola design, such as a character or a distinctive object along with the balloon. In such cascs, the inflated balloon may be retained with a tether. hi such embodiments where the enclosure is a box, there may be provided a removable lid. There may alternatively be provided a lid that remains attached at one edge of the box. In some embodiments, there is provided a trigger means attached at at least one end to the underside of the lid. This advantageously allows the trigger means to be activated by opening orremoving the lid.

Alternatively, the enclosure may be a flexible bag. In such embodiments, the bag may be made out of any suitaffle flexible material, including hut not limited to plastic film, fabric, a mesh or netted material, or a foil material. In such embodiments. there may be provided a trigger means with at least one end attached to the inner surface of the flexible bag. This allows the trigger means to be activated by opening the flexible bag.

Detailed Description of the Invention

In order that the invention may be more clearly understood embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings, of which: Figure 1 is a schematic diagram of a self-inflating balloon according to the present invention, before inflation; Figure 2 is a schematic diagram of the self-inflating balloon of Figure 1. after inflation; Figure 3 is a schematic diagram of another embodiment of a self-inflating balloon according to the present invention, after inflation; Figure 4 is a schematic diagram of the neck of the inflatable bag of an embodiment of a self-inflating balloon according to the present invention, provided with an illuniinating means; and Figure 5 is a series olillustratioiis of one potential process of operating the sell-inflating balloon of the present invention.

Figure 1 shows a self-inflating balloon 100 according to the present invention, provided with an enclosure 10. The balloon 100 is adapted such that when the enclosure is opened, the balloon self-inflates.

The enclosure 10 is a box provided with a lid 12. In some embodiments, the lid 12 can be secured to the box 10 at one edge. Within the enclosure is a container of compressed gas 14 and an inflatable hag 16.

The inflatable bag 16 may be formed from a foil material such as a biaxially-oriented Polyethylene Terephthalate (BoPET) film or a BoPET film with an Ethylene Vinyl Alcohol (EVOH) gas bather layer. and comprises a neck portion 161 and a body portion 162. Within the neck portion 161, there is provided a one-way valve 20 which is engagable with the gas valve 18. The one-way valve 20 is bonded to the inner sides of the neck portion 161 of the inflatable bag 16, such that the one-way valve 20 is the only passage through which gas can enter the bag 16.

The container of compressed gas 14 is provided with a gas valve 18, through which gas can leave the container 14. The compressed gas may be helium. The gas valve is provided with a spring or other biasing means (not shown) operablc to urge the gas valve 18 open.

Within the enclosure 10 there is also provided a pull tab trigger 22, wherein one end of the pull tab 22 is bonded to the underside of the lid 12 of the enclosure 10. and the other end is initially removably located in a position holding (he spring orotherhiasing means (not shown) into a position that holds the gas valve 18 closed, preventing any gas passing therethrough.

In use, the user opens the lid 12 of the enclosure 10 in order to inflate the balloon 16. Turning now to Figure 2, opening the lid 12 of the enclosure 10 withdraws the pull tab trigger 22 from its initial position, allowing the spring to assume its biased position in which the gas valve is held open by the spring. Activating the trigger means allows the gas valve to open and therefore enables helium from the gas container 14 to enter the inflatable hag 16 and cause the inflatable hag to inflate. The one-way valve 20 and the gas valve 18 are releasably engagable, such that when sufficient gas has been introduced, the engagement means can he released. In this context, the balloon 16 can he separated from the gas valve 18 of the compressed gas container 14. Any suitable releasable attachment means may be used, such as a screw thread, friction fit, push button engagement means, perforated film securing means, or temporary adhesion pads.

In an alternative embodiment, the gas valve 18 is provided with a spring or other biasing means (not shown) operable to urge the valve shut. The trigger means comprises a push button (not shown) operable to act against the biasing means when activated in ordcr to open the gas valve and allow the inflatable bag 16 to be inflated. Release of the push button causes the gas valve 18 to revert to the closed position.

Turning now to Figure 3. the one-way valve 20 and the gas valve 18 have been released and are no longer engaged. In this context, the inflated hag 16 is ahk to float above the enclosure 10. The floating inflated bag 16 is retained by way of a tether 24, which is attached at one end to the inflated bag 16 by means of a knot or adhesive bond, and attached at the other end to the gas container 14. The (ether 24 may be any suitable flexible tether, such as a length of ribbon, string, or wire. The tether 24 maybe a length of thin wire (such as fishing wire) such that the tether cannot be easily seen.

The gas container 14 acts as a weight to prevent the inflated bag 16 floating out of reach or to an undesired height. The gas container 14 may be removed from the enclosure 10 IS or may he bonded thereto. In embodiments where the gas container 14 may he removed from the enclosure 10, the gas container 14 may bc dccorativc.

There is also provided an illumination means 26. In this embodiment, the illumination means 26 is provided inside the inflatablc bag 16, at a distal end of the body 16 of the hag. The illumination device 26 has a projection 28 whereby it is attached to the inside of the wall of the inflatable bag 16 by a clip, band or 0-ring fitted onto the projection from outside the balloon.

An illumination means triggcr3Ois provided. The illumination means triggcr30 consists of a pull tab 301 of insulating material and is provided on and bonded to the inside of the inflatable bag 16. The illumination means 26 is shown in Figure 3 in an activated state, wherein inflation of the bag 16 has moved the illumination device 26 away from the pufl tab 301, therefore withdrawing it from its initial thcation and completing a circuit. Further details of pull tab activation of an illumination device provided at the distal end of a balloon can be found in W020081 10832.

Turning now to Figure 4. an alternative alTangement is shown, wherein an illumination device 26 is provided in the neck 161 of the inliatable bag 16. In this context, the illumination device 26 is provided adjacent to the one-way valve 20. The illumination device 26 is bonded to both the one-way valve 20 and the inner surface of the neck 161 of the inflatable bag 16, such that the one-way valve 20 is the only passage through which gas can enter the hag 16. In such an embodiment, the illumination device 26 is activated by use of any suitable trigger means 30. The trigger means 30 maybe the same trigger as the inflation trigger, or may be a separately provided trigger of the same or of a different kind.

The illumination device 26 may additionally he activated or controlled remotely.

In such embodiments, the balloon may be inflated at a first thnc and the illumination device 26 may be activated at a second, later time. As an example, a balloon or balloons may be inflated as part of preparation for a party. The illumination device 26 provided in each of the inflated balloons may then he subsequently activated by way of a remote control. hi such embodiments, pressing a button or equivalent on a remote control sends out a control signal (typically a radio frequency (RE) or infrared signal) and the illumination device 26 is provided with a sensor that is capable of receiving said control signal. Subsequently. in response to the detection of the control signal the illumination device 26 is activated. The control signal may be operable to activate the illumination device 26 or the control signal may be operable to select a mode of activation such as constant illumination or intermittent illumination.

An audio player (not shown) operable to output sounds is provided in the neck of the inflatable bag 16. The audio player is controlled in response to the activation of a trigger means. lii this embodiment, the audio player trigger means is provided integrally with the illumination means, and the audio pbyer trigger means is the same as the illumination device trigger means.

Turning now to Figure 5. a schematic diagram of (lie various steps of activating the self-inflating balloon are shown. Figure SA shows the enclosure 10 in its initial position, wherein the lid 12 is in the closed position. hi Figure 5B. the enclosure 10 is opened and the trigger means 22 is activated. Activation of the trigger means 22 causes the balloon to inflate, as shown in Figure SC. Figure SD shows an embodiment where the inflatable bag 16 is inflated and the body inflated bag 16 sits above the enclosure 10 IS and compressed gas container 14.

In cases where a lighter than air gas is used to inflate the bag. the steps of activating the sell-inflating balloon continue to Figure 5E. Figure SE shows an embodilnent where the gas valve (not shown) and one-way valve (not shown) positioned in the neck portion 161 are rdeasably engagaNe and haveheen releasedupon inflation of the inflatable bag 16. The inflatable bag 16 is retained by way of a flexible tether 24.

In allernative embodiments, the gas used may he a hydrogenated chlorofluorocarhon compound. The inflatable hag 16 may be made of rubber latex and the body portion thereof may be substantially spherical. Obviously, since a hydrogenated chiorofluorocarbon compound is not lighter than air, a balloon inflated with such a gas would not float. Since the balloon would not float, there is no need for a tether to be provided. However, the provision of a tether would enable the user to easily tie the balloon to an object and may be included in such embodiments. In such embodiments, the endosure may he a lightweight flexible hag. Additionally in such embodiments the neck portion 161 of the inflatable bag 16 may not be provided with a one-way valve. The gas valve 18 may engage directly with the neck portion 161 of the inflatable bag 16 and remain engaged throughout (lie use ol the balloon. In such embodiments, (lie inflation trigger means may comprise any suitable trigger means. In particular, the trigger means may comprise a pull tab of material initially in contact with the gas valve 18.

Withdrawing the pull tab trigger may release a spring biased to open the gas valve 18, allowing gas to enter and inflatc the inflatable bag 16.

The skilled man will appreciate that any features of embodiments described herein as using helium (or another lighter than air gas) such as but not limited to the particular trigger means provided, the provision of a one-way valve in the neck of the inflatable hag. and the provision oN tether, may equally he adapted to an embodiment of the present invention as herein described as using a heavier than air gas, and vice versa.

The above embodiments are described by way of example only. Many variations are possible without departing from the scope of the invention as defined in the appended claims.

Claims

CLAIMSI. A self-inflating balloon comprising: an inflatable hag of suhstantially air impervious material; a container of compressed gas; trigger means associated with the container operable to allow gas from the container to inflate the bag; and an enclosure in which the bag, the container and the triggcr means are housed, wherein opening the enclosure activates the trigger means or provides access for activation of the trigger means.
2. A self-inflating balloon as claimed in claim 1. wherein the gas container is provided with a container gas valve, through which the compressed gas exits the container.
3. A seli-inilating balloon as claimed in claim I or 2, wherein the compressed gas is a gas that is lighter than air.
4. A self-inflating balloon as claimed in claim 3, wherein the compressed gas is helium.
5. A self-inflating balloon as claimed in claim I or 2, wherein the compressed gas is a hydrogenated chiorofluorocarbon compound.
6. A self-inflating balloon as claimed in claim I or 2, wherein compressed gas is a combination of a gas that is lighter than air and a gas such as a hydrogenated chlorofluorocarhon compound.
7. A self-inflating balloon as claimed in any preceding claim, wherein the inflatabk hag comprises a neck portion and a body portion.
8. A self-inflating balloon as claimed in claim 7, wherein the neck portion is narrower than the body portion, and provides an elongate inlet channel through which gas can enter the body portion.
9. A self-inflating balloon as claimed in claim 7 or 8, wherein the body portion is spherical or substantially spherical.
10. A self-inflating balloon as claimed in any preceding claim, wherein the inflatable bag is substantially or partially translucent.
11. A self-inflating balloon as claimed in any preceding claim, wherein the inflatable bag is made of a lightweight, inelastic and air impervious material.
12. A seli-inilating balloon as claimed in any one of c'aims I to 10. wherein the inflatable bag is made of an elastomeric film.
13. A self-inflating balloon as claimed in any one of claims 7 to 12, wherein the neck portion of the inflatable bag is provided with a one-way valve that is engagable with the gas container valve.
14. A self-inflating balloon as claimed in claim 13, wherein the one way valve is bonded to the inner surface of the neck of the inflatable bag such that no gas can pass therehetween.
15. A self-inflating balloon as claimed in claim 13 or 14. wherein the one-way valve is releasably engagable with the gas container valve.
16. A self-inflating balloon as claimed in any preceding claim, additionally comprising a tcther means.
17. A self-inflating balloon as claimed in claim 16, wherein the tether means is an elongate flexible member.
18. A self-inflating balloon as claimed in any of claims 2 to 17, wherein the gas valve is provided with a spring or other biasing means operable to urge the gas valve open, the biasing means opposed by the trigger means.
19. A self-inflating balloon as claimed in claim 18, wherein the inflation trigger means comprises a removable pull tab initially positioned to hold the spring or biasing means in a position where the gas valve is held closed.
20. A self-inflating balloon as claimed in any of claims 2 to 17, wherein the gas valve is provided with a spring or other biasing means operable to urge the gas valve shut, the biasing means opposed by the trigger means.
21. A sell-inflating balloon as claimed in claim 20. wherein the trigger means comprises a push button operable to open the gas valve when activated.
22. A self-inflating balloon as claimed in claim 20. wherein the trigger means comprises a switch operable to open the gas valve when activated.
23. A self-inflating balloon as claimed in any preceding claim, additionally comprising an illumination device.
24. A self-inflating balloon as claimed in claim 23. wherein the illumination device is one or more light emitting diodes LED).
25. A self-inflating balloon as claimed in claim 23 or 24, wherein the illumination device is provided with a power supply.
26. A self-inflating balloon as claimed in claim 25, wherein the power suppiy comprises at least one battery.
27. A self-inflating balloon as claimed in claim 25, wherein the power supply comprises an energy scavenging means.
28. A self-inflating balloon as claimed in any of claims 23 to 27. wherein the illumination device is controlled in response to the activation of a trigger means.
29. A self-inflating balloon as claimed in claim 28, wherein the Uluniination device trigger means comprises an insulating material initially located between the battery or batteries and the LED, said material being capable of being withdrawn from extending between the battery or batteries in order to complete a circuit.
30. A self-inflating balloon as claimed in claim 28, wherein the illumination device trigger means comprises a switch or button.
31. A self-inflating balloon as claimed in claim 28, wherein the illumination device trigger means may comprise a sensor operable to receive a control signal.
32. A self-inflating balloon as claimed in any one of claims 28 to 31, wherein the inflation trigger means is also the illumination device trigger means.
33. A self-inflating balloon as claimed in any one of claims 28 to 31, wherein the illumination device trigger means is separate to the inflation trigger means.
34. A self-inflating balloon as claimed in any one of claims 23 to 33, wherein the illumination means is provided in the neck of the inflatable bag.
35. A self-inflating balloon as claimed in any one of claims 23 to 33, wherein the illumination means is provided at a distal end of the body of the bag.
36. A self-inflating balloon as claimed in claim 35. wherein the illumination device has a projection whereby it is attached to the inner side of the inflatable bag, by a clip. band or 0-ring fitted onto the projection from outside the balloon.
37. A self-inflating balloon as claimed in any preceding claim, additionally comprising an audio player operable to output sounds.
38. A self-inflating balloon as claimed in claim 37. wherein the audio player is eontrofled in response to the activation of a trigger means.
39. A self-inflating balloon as claimed in claim 38, wherein the audio player trigger means comprises a switch or button.
40. A self-inflating balloon as claimed in claim 38, wherein the audio player trigger means comprises a sensor operable to receive a control signal.
41. A self-inflating balloon as claimed in claim 38, wherein the inflation trigger means and/or the illumination device trigger means is also the audio player trigger means.
42. A self-inflating balloon as claimed in claim 38. wherein the audio player trigger means is separate to the inflation trigger means and/or the illumination device trigger means.
43. A self-inflating balloon as claimed in claim 37, wherein the audio player is provided integrally with the illumination means.
44. A self-inflating balloon as claimed in claim 37, wherein the audio player is provided separately to the illumination means.
45. A self-inflating balloon as claimed in any preceding claim, wherein the enclosure is a box.
46. A self-inflating balloon as claimed in claim 45. wherein the box is provided with a removable lid.
47. A self-inflating balloon as claimed in claim 46. wherein the inflation trigger means is attached at at least one end to the underside of the lid.
48. A self-inflating balloon as claimed in any of claims 1 to 44, wherein the enclosurc is a flexible bag.
49. A seli-inilating balloon as claimed in claim 48, wherein the inflation trigger means is attached at at Icast one cnd to thc inncr surface of thc flcxiblc bag.Amendments to the claims have been filed as follows:CLAIMS1. A self-inflating balloon comprising: an inflatable bag of substantially air impervious material; a container of compressed gas; trigger means associated with the container operable to allow gas from the container to inflate the hag; and an enclosure in which the hag, the container and the trigger means arc housed, whercin opening the enclosure activates the trigger means or provides access for activation of the trigger means and the balloon additionally comprises an illumination device.2. A self-inflating balloon as claimed in claim 1, wherein the gas container is provided with a container gas valve, through which the compressed gas exits the container.0 3. A self-inflating balloon as claimed in claim 1 or 2, wherein the compressed C\J gas is a gas that is lighter than air, (4 4. A seltinfiating balloon as claimed in claim 3, wherein the compressed gas is helium.5. A selfinflating balloon as claimed in claim I or 2, wherein the compressed gas is a hydrogenated chiorofluorocarbon compound.6. A self-inflating balloon as claimed in claim 1 or 2, wherein compressed gas is a combination of a gas that is lighter than air and a gas such as a hydrogenated clilorofluorocarbon compound.7. A self-inflating balloon as claimed in any preceding claim, wherein the inhiatable bag comprises a neck portion and a body portion.8. A self-inflating balloon as claimed in claim 7, wherein the neck portion is narrower than the body portion, and provides an elongate inlet channel through which gas can enter the body portion.9. A self-inflating balloon a.s claimed in claim 7 or 8, wherein the body portion is spherical or substantially spherical.10. A self-inflating balloon as claimed in any preceding claim, wherein the inflatable bag is substantially or partially translucent.11. A sell-inflating balloon as claimed in any preceding claim, wherein the inflatable bag is made of a lightweight, inelastic and air impervious material.IC) 10 12. A self-inflating balloon as claimed in any one of claims 1 to 10, wherein the inliatable bag is made of an elastomeric film.13, A self-inflating balloon as claimed in any one of claims 7 to 12, wherein the (\J neck portion of the inflatable bag is provided with a one-way valve that is engagable with the gas container valve.14. A selfinflating balloon as claimed in claim 13, wherein the one way valve is bonded to the inner surface of the neck of the inflatable bag such that no gas can pass thcrcbetween.A self-inflating balloon as claimed in claim 13 or 14, wherein the one-way valve is releasably engagable with the gas container valve.1 6, A self-inflating balloon as claimed in any preceding claim, additionally comprising a tether means.17. A self-inflating balloon as claimed in claim 16, wherein the tether means is an elongate flexible member.18. A self-inflating balloon as claimed in any of claims 2 to 17, wherein the gas valve is provided with a spring or other biasing means operable to urge the gas valve open, the biasing means opposed by the trigger means.19, A self-inflating balloon as claimed in claim 18, wherein the inflation trigger means comprises a removable pull tab initially positioned to hold the spring or biasing means in a position where the gas valve is held closed.20. A self-inflating balloon as claimed in any of claims 2 to 17, wherein the gas If) 10 valve is provided with a spring or other biasing means operable to urge the gas valve shut, the biasing means opposed by the trigger means.0 21. A se1finflating balloon as claimed in claim 20, wherein the trigger means comprises a push hiilton operable to open the gas valve when activated, 22. A self-inflating balloon as claimed in claim 20, wherein the trigger means 1 5 comprises a switch operable to open the gas valve when activated.23. A self-inflating balloon as claimed in any preceding claim, wherein the illumination device is one or more lighi emitting diodes (LED).24. A self-inflating balloon as claimed in any preceding clainmn, wherein the illumination device is provided with a power supply.25. A self-inflating balloon as claimed in claim 24, wherein the power supply comprises at least one battery.26. A self-inflating balloon as claimed in claim 24, wherein the power supply comprises an energy scavenging means.27. A self-inflating balloon as claimed in any preceding claim, wherein the illumination device is controlled in response to the activation of a trigger means.28. A self-inflating balloon as claimed in claim 27, wherein the illumination device trigger means comprises an insulating material initially located between the battery or batteries and the LED, said material being capable of being withdrawn from extending between the battery or batteries in order to IC) 10 complete a circuit.29. A self-iifflating balloon as claimed iii claim 27, wherein the illumination 0 device trigger means comprises a switch or button.30, A self-inflating balloon as claimed in claim 27, wherein the illumination device trigger means may comprise a sensor operable to receive a control IS signal.31. A seltinflating balloon as claimed in any one of claims 27 to 30, wherein the inflation trigger means is also the illumination device trigger means.32. A self-inflating balloon as claimed in any one of claims 27 to 30, whercin the illumination device trigger means is separate to the inflation trigger means.33. A self-inflating balloon as claimed in any preceding claim, wherein the illumination means is provided in the neck of the inflatable hag.34. A self-inflating balloon as claimed in any one of claims Ito 32, wherein the illumination means is provided at a distal end of the body of the bag.35. A self-inflating balloon as claimed in claim 34, wherein the illumination device has a projection whereby it is attached to the inner side of the inflatable S bag, by a clip, band or 0-ring fitted onto the projection from outside the balloon.36. A self-inflating balloon as claimed in any preceding claim, additionally comprising an audio player operable to output sounds.37. A selitinfiating balloon as claimed in claim 36, wherein the audio player is IC') 10 controlled in response to the activation of a trigger means.38. A selitinfiating balloon as claimed in claim 37, wherein the audio player 0 trigger means comprises a switch or button. (Si(\J 39. A self-inflating balloon as claimed in claim 37, wherein the audio player trigger means comprises a sensor operable to receive a control signal.40. A self-inflating balloon as claimed in claim 37, wherein the inflation trigger means and/or the illumination device trigger means is also the audio player trigger means.41. A self-inflating balloon as claimed in claim 37, wherein the audio player trigger means is separate to the inflation trigger means and/or the illumination device trigger means.42. A self-inflating balloon as claimed in claim 36, wherein the audio player is provided integrally with the illumination means.43. A self-inflating balloon as claimed iii claim 36, wherein the audio player is provided separately to the illuniinati on means.44. A self-inflating balloon as claimed in any preceding claim, wherein the enclosure is a box.45. A self-inflating balloon as claimed in claim 44, wherein the box is provided with a removable lid.46. A self-inflating balloon as claimed in claim 45, wherein the inflation trigger means is attached at at least one end to the underside of the lid, 47. A self-inflating balloon as claimed in any of claims 1 to 43, wherein the I!) 10 enclosure is a flexible bag.48. A self-inflating balloon as claimed in claim 47, wherein the inflation trigger means is attached at at least one end to the inner surface clthe flexible bag.