Applicator for applying fluid

An applicator primarily for applying colorants and other treatments to hair includes a container to which is mounted, preferably releasably, a reservoir for the treatment fluid, the reservoir being provided with at least two, and preferably between six and ten nozzles. The bores of the nozzles communicate with the interior of the reservoir so that fluid can be expelled from the reservoir through the nozzles and onto the hair in a controlled manner. The applicator is particularly convenient for applying several narrow bands of color to the hair.

FIELD OF THE INVENTION 
The present invention relates to an applicator for applying various fluid 
products, for example for applying colorants to hair. 
BACKGROUND OF THE INVENTION 
The application of treatment fluids to hair requires skill and practice if 
good results are to be achieved. The quality of the result is often 
dependent upon the skill and precision with which the treatment is 
applied, and so an applicator which helps a hairdresser to control the 
application of a fluid is beneficial in achieving a desired result. 
It is already known for a hairdresser to place a prepared treatment fluid 
into a plastic container provided with a nozzle through which the fluid 
may be squeezed on to the hair. Although this method of application is 
convenient and less messy than applying the fluid from a bowl using a 
brush, if a very fine nozzle is used to achieve a precise line of 
treatment, the rate at which fluid can be expelled from such a nozzle 
makes the application slow. Also, it can be difficult to ensure that the 
treatment is applied to the correct parts of the hair. 
DE-A-3743713 discloses a hairbrush having a plurality of substantially 
parallel bristles some of which are hollow whereby a treatment fluid from 
a container embodied in the brush can be fed into the user's hair. 
It would be desirable to be able to provide an alternative form of fluid 
applicator which overcomes some at least of the problems encountered with 
current forms of applicator, and in particular which enables accurate 
control in the application of the fluid to a substrate. 
SUMMARY OF THE INVENTION 
According to the present invention, there is provided an applicator for 
applying a fluid to a substrate comprising a reservoir for containing a 
treatment fluid, at least two nozzles spaced apart from one another and 
generally parallel with one another, and a passage connecting each of said 
nozzles to the reservoir, characterised in that the nozzles are each 
movable between an open position in which a bore therethrough communicates 
with the interior of the reservoir, and a closed position in which flow of 
fluid therethrough from the reservoir is prevented. 
The provision of at least two spaced apart nozzles allows fluid to be 
applied to at least two separate areas simultaneously, which has 
particular advantages when used to apply color in the form of "highlights" 
or "lowlights" to hair, because several narrow bands of color usually give 
a more natural-looking result than a single wider band. 
Although the invention is described in terms of its suitability for use in 
applying hair treatments, its advantages may be beneficial in other uses 
such as in the application of decorative paint effects. 
The reservoir may be an integral part of a complete container such as a 
tube or bottle in which the treatment fluid is contained. The reservoir 
is, however, preferably readily detachable from such a container so that 
it may be cleaned easily between applications. Most preferably, it is 
attached to and detachable from the container, for example by means of a 
screw-threaded connection or by a ridge provided on one of the reservoir 
and the container for engagement in a groove provided on the other of the 
reservoir and the container. 
The applicator may be used with a wide variety of containers and fluid 
expulsion means. For example one type of suitable container has a 
piston-like plate which may be caused to move towards the nozzles to force 
the fluid contained in the container out of the nozzles by depressing a 
plunger to which the plate is attached, as in a syringe, or by activation 
of a sprung mechanism by depressing a trigger, for example. Alternatively, 
some form of pressured container may be used from which fluid may be 
expelled through the nozzles by applying gas pressure within the 
container. 
A preferred type of container is a flexible tube or bottle from which fluid 
may be expelled by squeezing. 
The reservoir is connected to at least two nozzles through which fluid may 
be expelled from the reservoir. Preferably at least three nozzles are 
provided, and most preferably six to ten nozzles, spaced apart from each 
other in a direction transverse to the axes of the nozzle exits. 
The nozzles may each be opened and closed independently of one another. The 
nozzles are preferably pivotal between their open and closed positions ie. 
of a type which are joined to the reservoir by means of a pivotal 
connection whereby they may be closed by pivoting or folding them towards 
the reservoir so that the fluid passage therethrough is interrupted, or 
opened by being positioned to extend from the reservoir, so that the fluid 
passage between the reservoir and the nozzle becomes essentially linear 
and uninterrupted. By these means, the amount of fluid applied and the 
width of a section of hair to be treated may be controlled by opening the 
required number of nozzles. Also, the fluid may be applied in a number of 
narrow stripes which may be required specifically when carrying out 
certain types of treatment, for example putting highlights in hair. 
Preferably the applicator further comprises a generally elongate spreader 
located transversely to the axes of the nozzles and in close proximity to 
said nozzles. The presence of a spreader allows the person applying the 
fluid greater control over application of the fluid, because the spreader 
may be braced against is the part of the substrate which is being treated. 
The elongate spreader may be a solid bar, optionally tapered away from the 
reservoir. 
Preferably, however, the spreader comprises a comb which has relatively 
fine teeth. In this form, the comb and nozzles are preferably arranged so 
that the nozzles each discharge fluid between two adjacent teeth of the 
comb. Alternatively, the spreader may comprise a brush, in which form it 
may be particularly suitable for applying paint, especially for producing 
decorative effects. 
The spreader is preferably joined to an external wall of the reservoir in 
such a way that it is inclined towards the axes of the open nozzles 
preferably at an angle of between 30.degree. and 60.degree. to the axes of 
the nozzles. The spreader may touch the ends of the nozzles. The spreader 
may, optionally, be adapted to be readily detachable from and attachable 
to the reservoir, so that it can be removed for cleaning or for storage, 
for example. It may, for example, have a tongue running along an edge 
which may frictionally engage in a corresponding slot in the reservoir. 
The applicator is preferably made from a suitable plastics material, such 
as polypropylene. The reservoir, nozzles and spreader, if present, are 
preferably relatively rigid. The container, reservoir and nozzles are 
preferably transparent or translucent, so that the amount and composition 
of the fluid contained therein may be viewed from the outside. The 
reservoir and/or a container to which it is secured may be marked to 
indicate the volume of fluid contained therein. Preferably the markings 
are graduated along a substantial part of the container or reservoir and, 
most preferably, they are marked in such a way that they may indicate the 
volume of fluid in the container and/or reservoir both when the applicator 
is uppermost and when it is pointing downwards, which would normally be 
its position when in use. 
The container may optionally contain a heavy bar, bead or the like to 
agitate the treatment fluid on shaking of the container.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION 
The hair treatment applicator shown in FIG. 1 comprises a container 2 
formed of a flexible transparent plastics material, and a reservoir 4, 
also transparent but more rigid than the container 2. The reservoir 4 is 
secured to the container 2 by means of a ridge 6 around the circumference 
of the container 2 the underside of which is engaged by projections 8 
formed on the opposed inner walls of the reservoir. The components 2 and 4 
may be pushed together into positive engagement and subsequently separated 
by pulling them apart so as to disengage the projections 8 from the ridge 
6. 
Alternatively the reservoir 4 may be secured to the container 2 by means of 
an external screw-thread provided on the container 2 co-operating with a 
corresponding internal screw-thread provided in the reservoir 4. 
The reservoir 4 is provided with six nozzles 10 each pivotal within an 
associated groove 12 in the reservoir 4 between an open position, in which 
the nozzle extends longitudinally of the applicator and the bore 14 
therethrough communicates with the interior of the reservoir 4, and a 
closed position in which the nozzle 10 extends outwardly of the reservoir 
4 and the bore 14 is disconnected from the interior of the reservoir 4. 
A comb or spreader 16 is releasably mounted to the reservoir 4, for example 
by means of a tongue 18 on the comb 16 being slidably received in a 
corresponding groove 20 in the reservoir 4, the plane of the comb 16 
making an angle of about 40.degree. to the axes of the container 2 as best 
seen in FIG. 3. 
Alternatively, the comb 16 may be mounted to the reservoir 4 by means of a 
projection provided on the comb 16 which is a friction push-fit into a 
corresponding recess in the reservoir 4. 
In use, a quantity of hair treatment fluid, such as a colorant, is placed 
into the container 2, and the reservoir 4 is secured over the end of the 
container 2 to close it. At least one nozzle 10 is opened, the number of 
open nozzles 10 governing the width of the strip of fluid which is 
applied. The section of hair to be treated is then separated from the rest 
of the hair, the applicator is held in the position shown in FIG. 3 and 
the comb 16 is drawn through the hair section from above as the container 
2 is squeezed gently to expel fluid through the nozzles 10. The comb 16 
both stabilises the section of hair, allowing the even application of 
fluid along the section, and also helps the fluid to spread evenly across 
the section being treated. 
As the treatment continues the user can easily monitor the amount of fluid 
remaining in the container by referring to a graduated scale 22 upon the 
side. There may be two graduated scales, one on each side of the 
container, one for the applicator in an upright position, and the other 
for the applicator in an inverted position. 
When the treatment is finished, the reservoir 4 may be separated from the 
container 2 so that it can be cleaned ready for a subsequent treatment or 
to allow the container to be refilled. 
The reservoir 4 and/or the container 2 may, however, be intended to be 
disposed of after one use only. It may, for example, be desirable to 
supply standard pre-mixed treatments in a number of containers 2 which may 
be fitted to a reservoir 4 just before the treatment is applied. Many 
treatments must, however be mixed freshly shortly before application, in 
which case a user would fill the container 2 when the treatment had been 
prepared. 
As will be appreciated, the applicator according to the invention improves 
the ability of the user to apply a hair treatment in a controlled manner, 
to the extent for example that coloring only a discrete section of hair is 
made easier than with applicators available hitherto. Using the 
applicators illustrated in the drawings, it is possible to apply fine 
lines of highlighting treatment relatively quickly and easily compared 
with using existing applicators.