There is a continuing demand for items of decoration or entertainment which are different or are outlandish or otherwise excel so that people can enjoy and in many ways out do others by having or using such decoration.

The difficulty is to find items and locations for this purpose which can provide advantageous results accordingly.

The object of this invention then is to provide a decoration item which has significant advantage over those items that have been previously used or at least provide the public with a useful alternative.

In accord with this invention then there is provided a nail cap which can effect a luminescent transmission.

In preference, the nail cap has a casing defining a cavity with an upper wall which will transmit visible light there through, the cavity having within it a chemical to which can be added a catalyst to effect a luminescent effect.

In preference, the nail cap has a casing shaped so as to have an underneath part which is adapted to be adhered to the finger nail of a wearer.

In preference in accord with this invention however, there is provided a finger nail cap including a casing of plastics material having an upper side with an external convex shape and a lower side defining there between a cavity, at least one chemical being within the cavity and being a chemical which when activated by a catalyst will effect chemiluminescence, the upper side of the casing at least being transparent or having a part that is transparent so that light from any chemiluminescent reaction within the cavity will shine there through, the lower side having a lowermost shape which is concave on its outer side and of a complementary shape and size to a nail of a intended wearer.

By having luminescent finger nail caps on each of the nails of a wearer with the caps having been activated so as to luminesce, the effect particularly in

darkened surroundings such as in a Night club with lower lighting, can be quite spectacular and provide both a visually spectacular effect and one which provides to each wearer significant attraction.

I will now explain a number of specific details as to the variations that I currently envisage in terms of each of the caps that might be used and some of the techniques by which luminescence might be achieved within each of the caps.

The invention can apply both to the caps per se appropriate for this purpose and to the combination of caps when attached to the finger nail of a person or to the toe nails of the person.

As examples of the way in which chemiluminescent effects have previously been provided, I refer to such patents as US5043851 in the name of Kaplan, patent 4076645 in the name of Vega, 4814949 in the name of Elliot, Bay et al 5121302, and Elliott 4814949.

This is not an exhaustive list but illustrates the style of materials and chemicals that are currently known and can be used with this current invention including the chemicals and the catalysts.

This current invention relates to the application of any of these chemiluminescent techniques to the location as nail caps for fingers or toes of a wearer.

The way in which current techniques are used is to have two components that when they are brought together will cause the chemical reaction that provides the luminescence to commence and of course to continue for a period of time governed upon factors which relate to the condition of the chemicals used, their quantities and other external circumstances.

What this means however is that in order to commence the luminescence, there has to be an introduction of the one chemical composition into the other where these have been previously kept isolated.

One of the difficulties hitherto has been to ensure that the two chemicals can be kept sufficiently isolated but when necessary, be brought together in an

efficient and effective way.

One method is to hold a first chemical composition in a frangible container in the cavity of the cap which can be fractured by external pressure between the upper and lower sides of the cavity.

In order to achieve this vulnerability to fracturing reliably, and also to ensure that there is sufficient impermeability in the materials being used to encapsulate the first chemical composition, glass has been used.

Glass is very effective for impermeability and is very vulnerable to fracture and is therefore an ideal material for this purpose except that once fractured, it can have sharp edges which, if an outside holding device is made to be used in situations where it will be extensively bent or used around the limbs or neck of people, then the characteristic of this outer material has to be such that it can safely contain possible piercing or fracture from internal glass fragments.

Currently, given the extent of possible bending that is required for a typical "light stick"it has not been possible to find a clear plastic that will provide sufficient resistance to piercing and accordingly, a plastic is still used but one that is not clear but is sufficiently translucent to allow a substantial proportion of light there through that still is a very much lesser proportion than that available of light from a chemiluminescent reaction.

One of the advantages then of providing an application where this is to be adhered to a surface which will provide substantial support, is that the wall of the casing can now be made so that at least its outer face can be of clear plastic chosen however to be able to contain any of the chemicals in the chemiluminescent process and of course with a cap, then it becomes possible to use internal frangible containers of glass which can therefore be readily fractured by pressure from outside against the inside surfaces and chemiluminescent effect then is significantly improved simply because it can now be viewed through clear plastics material without of course the underlying difficulty of danger to those that might be using the articles.

The invention is not intended to be limited to use of glass containers in its broader concept.

For a better understanding of this invention it will now be described with the assistance of drawings in which; Fig 1 illustrates is an enlarged view of the hand of a wearer having the finger caps in position attached to the finger nails in accord with embodiments of this invention, Fig 2 is an enlarged view including for one finger a cap according to the an embodiment being located on the finger and one about to be positioned on the fore finger of an intended wearer, Fig 3 is a view beneath the finger, Fig 4 is a view from the side, Fig 5 and 6 shows a cap according to a further embodiment including patterns within the chemiluminescent effect in this case there being shown the letter e and other patterns of various designs and these can also be of different colours and of different brightness by reason of pads holding different base chemicals to effect a different reaction to a catalyst, Fig 7 is a cross-sectional view through a cap only having a wall defined by a fully transparent plastics material, Fig 8 shows glass containers containing a catalyst to effect the chemiluminescent effect, where the remainder of the cap in this case is filled with a second chemical composition responsive to the chemical within the individual phials, Fig 9 is a view of the cap with frangible glass containers which can be fractured under externally applied pressure to release catalyst into the body of the cap, Fig 10 is a perspective view of an individual frangible glass container holding catalyst, Fig 11 is a cross-sectional view of a pad with a central pad holding a second chemical composition in a way that will maintain a pattern visible through the

cap when the chemiluminescent effect is made to occur, Fig 12 is a cross sectional view of the cap with a two way adhesive material on an underneath side to assist for adhesion of the caps to the fingernails of a user, Fig 13 is a plan view of a further embodiment showing an inner porous matrix with channels to assist in dissipation of any introduced catalyst to embedded base chemical and a surrounding latex, and Fig 14 which is a cross section along the lines 14-14 in Fig 13.

In Figures 1,2,3 and 4, there are fingers 1 to which are secured for each a cap 2 the shape of which is such that a lower wall 3 is shaped to have a complementary shape to a persons nails having accordingly a lowermost shape which is concave and of a shape and size whereby to match the shape of an upper surface of a nail of an intended wearer.

An upper side 4 has an uppermost shape which is convex and defines between itself and the lower side 3 an internal cavity 5. The sides are moulded from a plastics material which is fully transparent so as to be able to transmit light there through, with minimal loss, from any chemiluminescence reaction in the cavity 5.

The shape and relative thinness of the sides 3 and 4 of the cap 2 provide a shape which is vulnerable to deflection under pressure in the middle of the cap 2 so that, when pressed together there will be some potential crushing between the sides 3 and 4 so that any frangible containers within the cavity can be crushed.

Accordingly, as shown particularly in Figures 7 through 12, the moulded cap of plastics material 2 includes within its cavity 5 frangible glass containers 6 which are shaped so as to be able to be fractured by deliberate pressure in the direction 7. Glass is used because it is substantially impermeable so that volatile components of a catalyst will not accidentally weep over time through the container and therefore set off the chemiluminescence reaction before it is required.

There is located within the cavity 5 so as to be distributed across a full area available a base chemical which will effect the chemiluminescent reaction when having a catalyst added.

In a further embodiment as shown in Figure 11, an additional pad as shown at 8 holds a composition such as in 9 so that there can be different visual patterns effected for instance where these are shown at Figures 5 & 6.

In a further embodiment the first chemical composition as a catalyst is inserted by way of a one directional valve 10 inset within the wall 4 of the cap 2.

Furthermore, in Figure 7 there is further shown at 11 a pressure relief valve to release excessive pressure that may result from any chemiluminescent reaction.

Now referring to Figures 13 and 14, there is shown an acrylic urethane outer shape at 12 that is moulded by having the base matrix 13 with embedded base chemical dipped into monomer which is then polymerised by ultraviolet light to form a sealed container cast around and following the shape of the base matrix. To catalyse the base chemical, a needle with catalyst can be inserted through the wall 14. To assist distribution of the catalyst there are a series of radiating channels 15 from a central location 16 which is the location at which the catalyst is to be introduced.

In a further embodiment there is an inner matrix 17 which is coated in the first instance by a latex surround 18. This is achieved by dipping the base matrix into molten latex and then allowing this to dry and thereby set. Then there is provided a further moulded surround of acrylic urethane 19 which is achieved by dipping into molten monomer, the latex coated base matrix 20 which is then polymerised by being subjected to ultraviolet radiation.

The advantage of this last arrangement is that the latex will be able to be applied without being a gap filler and will also maintain a seal around the matrix after a needle has been inserted there through to inject catalyst.

Further, the outer surface is provided by a material namely the acrylic urethane which is cosmetically acceptable while offering some pliability.

Further, the latex allows for pressure containment.

Further, the method just described has the advantage of being able to be easily put into practice.

In a further embodiment there is provided a reflective sheet that is secured against the lower side of the cap above that area of the cap that will be directly above the nail of the wearer. In this way the remainder of the cap can provide a light output that will show through 360 degrees and above the nail 180 degrees but with reflected additional intensity.

The caps can be secured by any selected method but one of these is to use double sided tape.

The cap can be manufactured according to different techniques and as illustrative of these, the upper and lower walls can be separately moulded by for instance injection moulding and snap locked together with as desired a seal joint connection. This can also be by way of thermoforming with ultrasonic or impulse welding joining the parts.

The matrix can be divided so that parts are of one colour as compared to others. This for instance can include black parts or contrasting colours or degrees of illumination.

The matrix can in the embodiments be generally within the range of thickness's of from. 8mm to 3.5 mm.

While there is shown an underneath arcuate concave shape which is chosen both in terms of size and degree of curvature to match a conventional shape of an intended wearers finger nail (or toe nail), these sizes and shapes will be changed of a range of peoples sizes and shapes (including whether the nail is be the nail of a thumb or fingers or toes). The cap can extends both lengthwise and widthwise in response to fashion or style demand.

The invention then can reside in a cap suitable for attachment to the nail of a person where the cap is comprised of a casing containing therein a combination of chemicals and means to effect the mixing of those within the casing to effect a chemiluminescent effect, and a transparency or translucency through at least a part of the casing to provide a visual exposure of any chemiluminescent effect.

The shape of the casing includes an outside shape that is adapted to engage against the nail of a person for attachment thereto.

In one embodiment there are means to effect introduction of a second chemical through a non return valve in the casing to effect thereby a mixing within the casing of the two necessary chemical materials to effect chemiluminescence.

In an alternative embodiment, there are within the cavity of the casing, two fragile containers which are glass holding in isolation until fractured, a first chemical composition such that when released, there will be effected into a remainder of the casing, a mixture effecting then for a period of time a chemiluminescent effect.

In a further embodiment, the caps can be separately attached to a supporting body which simulates the nail of a person or at least provides a support base upon which the cap is attached thereby providing protection against excessive bending of the casing and therefore vulnerability of fracture.