Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
  • A46B3/005—Bristle carriers and bristles moulded as a unit
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B2200/00—Brushes characterized by their functions, uses or applications
  • A46B2200/10—For human or animal care
  • A46B2200/1046—Brush used for applying cosmetics
  • A46B2200/1053—Cosmetics applicator specifically for mascara

Definitions

• the invention relates to the field of applicators of cosmetic product fluid or pasty, mascara type.
• the invention relates more specifically to the device or means of application of the cosmetic product
• the application device itself may be for example an elongate brush, having a central core from which are bristled a set of bristles or pins.
• the hairs are old technology: a twisted wire retains bristles that are bristles transversely.
• An exemplary application is illustrated in US Pat. No. 5,661,361.
• the application device is in the form of a brush comprising a series of pins embedded on the longitudinal core of the brush.
• the whole is molded in plastic material.
• An application device thus forms with a suitable reservoir in which it is insertable, a cosmetic product dispenser.
• the applications FR 2 810 860 and WO 201 1/045770 show some examples of applicators resulting from this concept.
• a solution envisaged by the prior art to improve the mascara load of the brushes is to use spikes having a flat face to collect the mascara while the non-planar face participates in the separation of the eyelashes.
• EP 1 872 682 discloses such a brush; the pins are arranged according to rows parallel to the longitudinal axis of the brush and all the pins of a row have their flat face on the same side: the flat faces are aligned while the non-planar faces are on the same side of the line. The user of the brush thus prints a movement of the brush in a direction perpendicular to the longitudinal axis of the brush, while rotating it.
• Brushes of this type do not have maximum efficiency because the flat faces do not participate in the separation of eyelashes and non-planar faces do not participate in the mascara load. With this type of brush, the user is therefore forced to make several passes on her eyelashes while reversing the movement of the brush to ensure that a sufficient load of mascara is recovered.
• the patent application EP 161 1 817 discloses a mascara application device comprising a longitudinal support, a first and a second row of pins made monolithically with the support, embedded in a same side of the support and extending over more than a quarter of the length of the support.
• the teeth extend on either side of a so-called separation geometric surface formed in two non-parallel directions and surfaces.
• the pins are erected from a flat face of the support, and they are arranged in staggered rows on both sides of the separation surface.
• Patent application FR 2 930 875 which describes a cosmetic product applicator device comprising a longitudinal core supporting several rows of pins having a flat face and projected radially from the core, is also known.
• the pins are distributed in at least one row parallel to the longitudinal axis of the core, so that in the same row the pins are positioned alternately on either side of a line (or plane) central to the row, with their planar face turned towards the inside of the row.
• the flat faces of the pins of the same row extend perpendicular to the soul and are aligned, and they are oriented in both gyratory directions around the soul.
• the prior art also comprises the patent application EP 1 070 465 A2 which describes a comb whose pins are distributed in two rows of tapered and curved pins, symmetrically vis-à-vis a geometric surface of seperation.
• This improvement offers a certain modularity in the restraint of cosmetic product but it finds an interest in the application to a comb or any equivalent device.
• Patent FR 2 937 514 is still known which describes a mascara applicator whose spikes, obtained from molding with the core, are distributed in rows parallel to the longitudinal axis of the core and extend protruding in a curved way from the soul.
• the general curvature of the pins is substantially circular so that according to one embodiment, an applicator in the form of curved pin brushes; such an applicator makes it possible to curve the eyelashes but the deposited charge is constant and weak.
• each pin must contribute to improving, alone or in combination with other pins, both the load product, and the separation of eyelashes or keratin fibers.
• the invention aims to remedy the disadvantages of the state of the art and in particular to provide an application device capable of capturing a volume maximum cosmetic product when in contact with it, while keeping this product even after the passage (s) through the wiper; the wiper is a small piece disposed on the mouth of the container, able to remove the surplus of cosmetic product captured by the applicator itself.
• an applicator device of a product of the fluid or pasty type on keratinous fibers comprising an elongated central core which extends along a longitudinal axis XX, at least one row of elongate pins including a first end embedded in the core and a second free end, the pins and the core being formed, more precisely from molding, in one piece.
• At least one of the pins has a flattened shape in a plane substantially perpendicular to the axis XX, said at least one pin being defined in front view by a first edge continuously convex or concave from its base embedded in the core to the second free end, and by a second edge having at least two curvatures separated by a point of inflection from its base embedded in the core to the second end free of the pin, the first and second edges meeting at the free end.
• said pins have a slot in their thickness adapted to define a first and a second lateral flanks arranged vis-à-vis.
• the volume of product retained is different between the foot and the free end of the pin: more product is retained near the free end, where the eyelashes are almost in contact with the pimples.
• the characteristic shape of the pins allows maximum bending during passage through the wiper while retaining a maximum volume of cosmetic product. It is advantageous to capture a maximum volume of cosmetic product thanks to the specific shape of the pins, to keep this volume during the passage through the wiper, then to return the volume once outside the product.
• the brush according to the invention acts as a sponge that absorbs or picks up the product and then restores it when the eyelashes are in contact with the spikes.
• 'front view' is meant the view from one end of the elongate core.
• said slot is provided over the entire height of the concerned pin.
• height is meant the largest dimension of the pin, which corresponds substantially to a radial dimension of the applicator.
• first and second sides have more than 5% of their surfaces vis-à-vis. It is meant here that the flanks, which are disposed opposite one another, separated by the slot, have facing surfaces which represent more than 5% of the substantially flat surface of one of the flanks.
• one of said first or second sidewall has in front view a cut (opening) substantially in the form of a semi-circle whose diameter substantially corresponds to a portion of said second edge.
• the first and second flanks have a cutout (opening) defined from the second edge and placed at a different height of the pin.
• the barycentre of said opening is between one tenth and nine tenths of the total height H of the pin measured in a radial direction to the axis XX.
• This characteristic means that said opening can be provided at a variable height on the pin, defined by the skilled person depending on the application case.
• the pins are arranged in rows oriented along the longitudinal axis XX of the application device.
• the shape and / or arrangement of two pins successively implanted on the axis XX is able to create at least one distal opening between them.
• At least one of the pins comprises at least one protuberance resulting from a bulge and / or a convexity.
• said pins together form a substantially cylindrical outer shape (or envelope).
• FIG. 1 a perspective view of the applicator device according to a first embodiment of the invention
• FIG. 3 a front view of a pin according to a first embodiment of the invention, showing a first lateral flank;
• FIG. 4 a view of the other side of a pin according to the first embodiment of the invention, showing a second side flank;
• Figure 5 a first perspective of a pin according to the invention, seen since its embedding on the core, relative to the first embodiment;
• FIG. 8 a front view of a pin according to the second embodiment of the invention, showing a first side flank;
• FIG. 1 1, a side view, according to the thickness, a pin according to a third embodiment of the invention
• FIG. 12 a front view of a pin according to the third embodiment of the invention, showing a first side flank;
• FIGS. 15, 16 and 17 relate respectively to a front view of the device according to a fourth embodiment, side and front views of the pins, and a perspective view of said device;
• FIG. 18 illustrates pins according to the fourth embodiment of the invention, provided with a lug
• FIG. 19 is a front view of a fifth embodiment of the invention.
• Fig. 20 is a side view of the embodiment of Fig. 19;
• FIG. 21 is a front view of a sixth embodiment of the invention.
• FIG. 22 is a perspective of the device according to the sixth embodiment of the invention.
• FIGS. 23 and 24 are diagrams for viewing in particular the curvature plane carrying the first edges of the pins;
• FIG. 25 is a front view highlighting one of the features of the invention.
• Figure 1 shows a perspective of an applicator device of cosmetic product, including mascara; this applicator comprises a central core 1 of elongate shape which extends along an axis XX.
• the cross section of the core 1 may be constant or not along its length; it can be circular, oval, polygonal or other.
• a set of elongated pins 2 or positive reliefs are erected.
• the core 1 and the pins 2 are derived from molding.
• the pins 2 preferably extend substantially radially around the core 1, and they are arranged in rows parallel to the longitudinal axis XX, although this provision is not limiting.
• FIG. 1A shows in more detail the implantation of the pins 2 on the core 1, embedding type implantation.
• the pins are embedded on the core at their base 20, while their second end 21 is free.
• the pins are therefore flexible; their flexibility is determined by several parameters including their size, their shape, their material.
• the present invention provides an interesting and characteristic form of pins 2, declined according to several embodiments.
• the pins 2 have a flattened shape in a plane which is generally substantially perpendicular to the longitudinal axis XX.
• 'Aplati' means that the pins have a dimension along an axis of the trihedron significantly lower than the other two.
• Figure 2 and section 2A show a pin in its thickness e, of the order of mm;
• Figures 3 and 4 show the same picot, on the same scale, for faces and it is clear that the dimensions are several times larger.
• the height H of this pin can be mm.
• the pin In front view, that is to say from the end of the applicator, the pin is defined by a first edge 25 continuously convex from the base 20 of the pin to its free end 21.
• the first edge corresponds favorably to a portion of a circle.
• the pin 2 comprises a second edge 26 successively concave and convex from the base 20 of the pin to its end 21.
• the first edge 25 and the second edge 26 meet at the free end 21.
• Figures 3 and 4 illustrate this characteristic form.
• the pins have a slot 24 located at their thickness e so as to define two flanks, themselves flattened.
• the AA cut shows the slot 24 which delimits the two flanks 22, 23 in the thickness e of the pin.
• the thickness e is not constant here: it is large at the base of the two flanks, and smaller at the end of the flanks. The skilled person is able to finely define these dimensions.
• the two flanks 22, 23 are called lateral flanks in the following of this text. They have good flexibility, especially near their convex edge 26 and / or the free end 21.
• the slot 24 therefore constitutes a volume in which the cosmetic product is retained; the volume of product actually retained varies according to the pressure exerted on the lateral flanks 22, 23, as will be explained below.
• Figure 5 shows a perspective since the embedding 20 of the pin, the characteristic form thereof, according to the first embodiment of the invention. More precisely, the first flank 22 is shown therein.
• FIG. 6 more particularly shows the second flank 23, which here has a shape similar to the first flank. A symmetry according to a plane P is therefore provided in this embodiment of the invention.
• the first and second flanks here have 100% of their respective internal surfaces, vis-à-vis. Vis-à-vis the total height H of the pin 2, the height of the slot 24, that is to say, its largest dimension, measured substantially along a radius of the applicator device, corresponds to the height total H of the picot. Without departing from the scope of the invention, the height of the slot 24 could be less than the total height H of the slot.
• Figures 7 to 10 illustrate a second embodiment of the invention which differs from the first by the shape of one of the lateral flanks 22 or 23.
• the first 22 or the second 23 flank present here a cutout 27 substantially in the shape of a semicircle whose diameter substantially corresponds to a portion of the second edge 26 of the pin.
• the cut 27 is therefore from the second edge 26 of the pin; its shape is substantially semicircular, but any close shape is within the scope of the invention.
• the volume of product enclosed inside the slot 24 is smaller than in the first embodiment of the invention, but the pin is more flexible, which can be advantageous.
• the eyelash C as shown in FIG. 10, is in direct contact with the surface corresponding to the cutout 27 so that it is easier to load into product at this level; this constitutes an advantageous characteristic of the invention.
• the first 22 and second 23 sidewalls have about 50% of their solid surfaces vis-à-vis one another.
• FIGS. 7 to 10 illustrate a third embodiment of the invention according to which each side 22, 23 has a cutout. More specifically and as particularly visible in Figures 12, 13 and 14 the cut is defined from the second edge 26. The cut on one of the flanks is placed at a height H1 while the cutout provided on the other side is at a height H2 different from the height H1.
• the height H1 or H2 of the cutout can be defined as the distance between the embedding of the pin on the core and the center of gravity of this cut, distance measured radially to the longitudinal axis XX.
• This embodiment of the invention allows a greater load of cosmetic product insofar as the eyelash comes into contact with the cosmetic product present on the inner face of the pin 2 both on one and the other of its sides flattened. In comparison, the embodiment of FIGS. 7 to 10 allows charging via one of the faces of the pin.
• the barycentre of the cutout 27 or 28 is located between one tenth and nine tenths of the total height H of the pin, measured in a radial direction to the axis XX.
• Figure 14 illustrates with a perspective from the embedding area of the pin, a pin according to the third embodiment of the invention.
• the applicator may have a length of between A mm and B mm; the pins have a height of between C mm and D mm; the thickness e of the pins is of the order of E mm; the width or third dimension of the pins may be between F mm and G mm.
• the applicator may be made of a material such as ...
• FIG. 15 illustrates a device in front view of a fourth embodiment of the invention. invention; we see pins 2 aligned according to the length of the arrangement; the pins each have a first curved edge and a second edge 26 successively convex then concave, from the first embedded end 20 to their second free end 21. A slight overlap at the base 20 of the pins is made possible by the angular offset between two successive pins along the length of the device.
• Figure 16 specifies the shape of the pins in space; these pins, while being flattened, that is to say of small size in a side view, however, have a slight curvature visible in the side view. A relief is thus created, favoring the capture of cosmetic product.
• FIG. 17 shows in a general perspective the implantation of pins, organized in rows, with a slight offset along the length, allowing the offset of the bases 20 visible in FIG. 15.
• Figure 18 shows different views of the pins, which differ from those shown in Figure 16 by the additional presence of pins 29 oriented according to their thickness.
• the lug 29 increases the capture surface of the cosmetic product, and improves the contact with the eyelashes. Although the geometry of these lugs is more sophisticated than the previous ones, their manufacture by molding remains possible.
• Figures 19, 20 and 20A illustrate an embodiment where the pins are aligned along the length of the device, with pins whose first edge 25 is curved in the same direction of curvature in front view.
• the pins 2 are grouped in pairs to form a front view of the curved petals species, characteristic of the invention.
• the pins In side view, and as more precisely seen in Figures 20 and 20A, the pins have a curvature such that two longitudinally juxtaposed pins form together a loop 30.
• Such a loop 30 represents a cosmetic product reservoir, otherwise flexible seen the dimensions and shapes envisaged.
• This aspect perfectly corresponds to the purpose of the invention: sponging effect, able to capture a maximum of product, to imprison during passage through the wiper, then to restore it when contact with the eyelashes.
• Figures 21 and 22 illustrate an embodiment similar to that of Figure 15, but which differs in the implantation of the pins 2 on the core 1: the alignments of pins 2 (along the longitudinal axis XX ) consist of an alternation of pins whose first edge 25 is curved in one direction and then in the other, with the same curvature. These alignments are more particularly visible in FIG. 21; Figure 22 illustrates these same alignments, in perspective.
• Figures 23 to 25 highlight the continuous curvature Co of the first edge 25 of the pins.
• the circle associated with the front view of FIG. 25 clearly marks the curvature in which the first edge of the spikes is inscribed.
• the pins are not accurately represented but it is important to see the circle Co on which the first edges of the pins rest.
• the profile of the pins 2 allows a specific wiping and a restitution of the cosmetic product load.

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• Physics & Mathematics (AREA)
• Geometry (AREA)
• Brushes (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=53366147

Family Applications (1)

Country Status (5)

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Family Cites Families (10)

• 2015
  • 2015-04-14 FR FR1553258A patent/FR3034969B1/fr not_active Expired - Fee Related
• 2016
  • 2016-04-12 WO PCT/FR2016/050840 patent/WO2016166462A1/fr active Application Filing
  • 2016-04-12 US US15/565,800 patent/US10849415B2/en active Active
  • 2016-04-12 JP JP2017554254A patent/JP6974902B2/ja active Active
  • 2016-04-12 EP EP16723408.7A patent/EP3282888B1/de active Active

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