A HAIR CURLING DEVICE

DISPOSITIF POUR FRISER LES CHEVEUX

English Abstract

A hair-curling device, of a type comprising a grip (2) for supporting a
shaped body (3) having an elongate shape on which a lock of hair is rolled,
and electrical
heating means (4) associated to the shaped body (3) for defining a
predetermined
curl in the lock of hair wound on the body (3), the grip (2) fixedly
supporting the shaped
body (3); the body (3) being symmetrically shaped with respect to relative
median horizontal
and vertical planes thereof and longitudinally exhibiting a transversal
section
which varies continuously from a minimum value to a maximum value, and vice
versa,
according to a predetermined progression.

French Abstract

L'invention porte sur un dispositif pour friser les cheveux, d'un type comprenant un élément de préhension (2) pour supporter un corps ayant une certaine forme (3), ayant une forme allongée, sur lequel une mèche de cheveux est enroulée, et des moyens de chauffage électrique (4) associés au corps ayant une certaine forme (3) pour définir un bouclage prédéterminé dans la mèche de cheveux enroulée sur le corps (3), l'élément de préhension (2) supportant de façon fixe le corps ayant une certaine forme (3); le corps (3) est conformé de façon symétrique vis-à-vis des plans médians horizontal et vertical relatifs de celui-ci, et présente longitudinalement une section transversale qui varie de façon continue d'une valeur minimale à une valeur maximale, et inversement, selon une progression prédéterminée.

Claims

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CLAIMS
1). A hair-curling device, of a type comprising a grip (2) for supporting a
shaped body (3) having an elongate shape on which a lock of hair is
rolled, and electrical heating means (4) associated to the shaped body
(3) for defining a predetermined curl in the lock of hair wound on the
body (3), the grip (2) fixedly supporting the shaped body (3);
characterised in that the body (3) is symmetrically shaped with
respect to relative median horizontal and vertical planes thereof and
longitudinally exhibits a transversal section which varies continuously
from a minimum value to a maximum value, and vice versa, according
to a predetermined progression.
2). The device of claim 1, characterised in that the shaped body (3)
comprises two heads (5, 6) and at least a broadened zone (7)
separated from the two heads (5, 6) by at least two narrowed zones (8).
3). The device of claim 2, characterised in that the shaped body (3)
comprises a plurality of broadened zones (7) separated from one
another and from the heads (5, 6) by corresponding narrowed zones
(8).
4). The device of claim 2 or 3, characterised in that the transversal
sections of the heads (5,6 ) are shaped according to a substantially
elliptical or oval or circular geometry.
5). The device of one of claims from 2 to 4, characterised in that the
transversal sections of the broadened section (7) and the narrowed
sections are shaped according to substantially elliptical or oval or
circular geometry.
6). The device of one of the preceding claims, characterised in that it
comprises means (10) for activating and regulating a heating power

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generated by the electrical heating means (4), which means (10) are
associated to the grip (2).
7). The device of one of claims from 1 to 6, characterised in that the
electrical heating means (4) are constituted by one or more electrical
resistances.
8). The device of one of claims from 1 to 7, characterised in that the
electrical heating means (4) are constituted by several electrical
resistances having different heating power.

Description

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A HAIR CURLING DEVICE
TECHNICAL FIELD
The invention relates to the technical sector concerning devices for
curling hair, known as curlers.
BACKGROUND ART
A plurality of hair-curling devices are known, destined to be used by
operators in the sector to perform curly hairstyles or permanents, with
io more-or-less undulated hair according to the customer's wishes.
Hair-curling devices are fundamentally constituted by a grip for
supporting a shaped elongate body, generally cylindrical, on which a
lock of hair is rolled, and by heating means associated to the shaped
body for defining a predetermined curl of the lock wound on the body.
In some cases the body on which the lock of hair is rolled exhibits a
constant transversal section over the long longitudinal extension
thereof, while in other cases the body exhibits a constantly growing
section proceeding from the grip towards the free end.
A blocking element is often hinged to the shaped body, which element
is destined to stabilise the rolled lock of hair.
Hair-curling devices, being provided with a cylindrical body, are not able
to provide the locks of hair treated with a final "natural" effect, evidently
showing that the effect is indeed artificial.
Finally, with known-type hair-curling device the final styled effect,

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however carefully done, exhibits a visual effect such as to appear
unnatural, i.e. the difference between a natural wave and/or curl is
evidently different to those produced artificially using hair-curling
devices.
The cylindrically-shaped body enables waves and/or curls to be
obtained which are similar to each other, which adds to the unnatural
effect of the relative styling.
Further hair-curling devices are known, in which the shaped body is
detachable from the grip, which however exhibit the drawback of not
io guaranteeing, during use, the certainty of electromechanical stability of
the coupling between the two detachable bodies.
This is particularly disadvantageous when considering that during the
stage of use, should there be an accidental detachment, the shaped
body could go involuntarily and uncontrolledly into contact with both the
surrounding hair and the skin of client's head, with the risk of damaging
both the final aesthetic result of the treated lock of hair and also the
customer's health.
An accidental detachment would also lead to an electrical disconnection
between the grip, to which the electrical supply is associated, and the
shaped body, in which the heating means are housed, causing an
undesired irregularity in the temperature of the shaped body which
could not be perceived by the operator and which would result in a poor
result in the treated lock of hair.
DISCLOSURE OF INVENTION
The aim of the invention is to provide a hair-curling device which

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enables artificial waves and/or curls to be obtained of the locks of hair
treated, which waves and/or curls are particular similar to natural curls
and/or waves.
A further aim of the invention is to provide a hair-curling device which
enables waves and/or curls to be obtained which differ along the length
of each lock of hair.
A further aim of the invention is to provide a hair-curling device which is
extremely reliable and functional for the operator, thus guaranteeing
maximum safety during the operating stage with regard to the locks of
io hair treated and the safety of the user undergoing the treatment to her
or his hair.
BRIEF DESCRIPTION OF THE DRAWINGS
The above aims are obtained in accordance with the contents of the
claims.
The characteristics of the invention will be made evident in the following
description, in which preferred but not exclusive embodiments of the
invention are illustrated, with reference to the accompanying figures of
the drawings, in which:
figures 1, 2 show respective views, front and rear, of the hair-curling
device;
figure 3 shows the view according to section B-B of figure 1;
figure 4 shows the view according to section A-A of figure 1.

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BEST MODE FOR CARRYING OUT THE INVENTION
With reference to the figures of the drawings, 1 denotes in its entirety
the hair-curling device comprising, in known ways, a grip 2 for
supporting an elongate shaped body 3 on which a lock of hair is rolled,
and electrical heating means 4 associated to the shaped body 3 for the
definition of a predetermined curl of the lock wound on the body 3, with
the shaped body 3 being supported fixed to the grip 2.
In a novel way, the curling device 1 of the invention is provided with a
body 3 which is shaped symmetrically with respect to the relative
io median horizontal and vertical planes and longitudinally exhibits a
transversal section which varies continuously from a minimum value to
a maximum value and vice versa, according to a predetermined
progression.
In a preferred embodiment the shaped body 3 comprises a pair of
broadened sections 7 separated from one another and from the heads
(5, 6) by three corresponding narrowed sections 8.
The transversal section of the broadened sections 7 can be less than
the transversal section of the heads 5, 6 as illustrated in the accompany
figures, or vice versa.
By way of example, with reference to the accompanying figures of the
drawings, the two heads 5, 6 have a transversal section with a
substantially elliptical or oval geometry, while the transversal sections of
the broadened sections 7 and the narrowed sections 8 have a
substantially circular geometry.
Entirely similarly, in further embodiments, not illustrated for the sake of
simplicity, the transversal sections can include any desired combination
of elliptical/oval/circular geometry which enables obtaining the

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predetermined curl of the lock of hair.
In similar embodiments, also not illustrated for the sake of simplicity, the
shaped body 3 can further comprise one or more broadened sections 7
separated from one another and from the two heads 5, 6 by
corresponding narrowed sections 8.
Means 10 for activating and regulating the heating power generated by
the electrical heating means 4 are advantageously located on the grip
2.
In known ways, a blocking element can be associated to the shaped
io body 3, which blocking element is destined to stabilise the lock of hair
rolled on the body 3.
The electrical heating means 4 can be constituted by an electrical
resistance i.e. by several electrical resistances having for example
different heating power.
In the first case the single resistance heats the shaped body 3 over the
whole extension thereof, with a surface temperature that varies
according to the quantity of material interposed between the resistance
and the surface; at the heads 5, 6 the surface temperature is less than
the temperature of the broadened sections 7, which is in turn less than
the temperature of the narrowed section 8.
In the second case the various resistances are of such a size and are
arranged such as to obtain a predetermined surface temperature profile
of the shaped body 3.
In both cases the electrical heating means 4 can be connected to a
temperature sensor (not illustrated) and regulated using the activating
and regulating means 10.

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During the functioning stage the resistance 4 or resistances 4 heat the
external surface of the shaped body 3 in the desired way, such as to
obtain the predetermined wave and/or curl of the lock of hair wound on
the shaped body 3, stabilising the obtained curl.
From the above, it can easily be understood how the provided hair-
curling device enables artificially obtaining waves and/or curls of the
treated locks of hair which are particularly similar to natural waves
and/or curls.
The elongate shaped body, symmetrical with respect to the horizontal
io and vertical planes and having a transversal section which varies
continuously from a minimum to a maximum value and vice versa,
enables waves and/or curls to be obtained of the hair which are
particularly similar to natural effects, thanks to the fact that the locks of
hair wound on the body are subjected to zones having different degrees
of waves.
More precisely the wave is more accentuated in the locks of hair wound
at the narrowed sections and less accentuated in the locks of hair
wound on the broadened sections.
The hair-curling device of the invention is further extremely reliable and
functional for the operator as it guarantees maximum safety during
functioning, thus protecting the treated locks of hair and safeguarding
the health of the user undergoing hair treatment.
The presence of zones with suitable broadened sections and narrowed
sections, together with the possibility of adopting a plurality of electrical
resistances, enables a predetermined temperature gradient to be
obtained on the external surface of the shaped body and this enables
the operator to handle the hair-curling device with greater safety,

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avoiding the risk of burning her or himself and also singeing the user
during the operating stage.
The special geometry of the shaped body enables use of smaller
blocking elements for stabilising the lock of hair, making the hair-curling
device provided particularly usable even by operators who are not
particularly expert.

Representative Drawing