|Publication number||USRE41156 E1|
|Application number||US 09/899,182|
|Publication date||Mar 2, 2010|
|Filing date||Jul 6, 2001|
|Priority date||May 24, 1996|
|Also published as||CA2207155A1, CA2207155C, CN1108771C, CN1176766A, DE69714138D1, DE69714138T2, EP0808587A1, EP0808587B1, US5918994|
|Publication number||09899182, 899182, US RE41156 E1, US RE41156E1, US-E1-RE41156, USRE41156 E1, USRE41156E1|
|Inventors||Jean-Louis H. Gueret|
|Original Assignee||L'oreal S.A.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (21), Non-Patent Citations (4), Referenced by (2), Classifications (14), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
The invention relates to a brush, in particular to a brush for applying a cosmetic product to keratin fibers, especially for applying mascara to the eyelashes or a dye to the hair, as well as to a make-up device including this brush.
2. Description of the Related Art
Brushes are known, in particular from FR-A-2,605,505 and FR-A-2,715,038, for applying a cosmetic product which consists of a core into which bristles are fitted radially, these brushes having at least one concave notch which holds some of the product during wiping. Such brushes make it possible to vary the make-up, with more or less product being applied and a greater or lesser lengthening effect, depending on the shape of the notches and the way in which they are used. However, the notches have a continuous surface.
Also known, in particular from GB-A-2,170,996, are brushes for applying mascara to the eyelashes, these brushes having an alternating sequence of long bristles and short bristles forming a U-shaped notch. This type of brush only makes it possible to apply small quantities of mascara to the eyelash. Furthermore, the combing of the eyelashes and the spreading of the mascara on the eyelashes remains unsatisfactory.
Although these conventional brushes give results which are overall satisfactory, it is desirable to provide brushes which allow the eyelashes to penetrate the brush sufficiently to allow the product to be smoothed properly and the eyelashes to be separated properly. It is therefore an object of the invention to provide a brush for which application remains simple and economical, and which is practical to use.
This object is achieved, surprisingly, with the aid of a first aspect of the invention, namely a brush comprising an elongate core, bristles fitted radially into this core, and at least one notch consisting of at least two secant faces, of which a first face is referred to as the “notch back” and a second face is referred to as the “notch front”, defining by their intersection a trough line, wherein the two faces are asymmetric and form a reentrant angle β, at any point of their intersection, of between 60° and 180°.
This brush can be used to comb and/or make up the hair, the eyelashes, the eyebrows, etc. The external surface of the brush is defined by the ends of the bristles of this brush. The envelope surface of the brush is defined as the surface containing the ends of the longest bristles of the brush. The central axis of the brush is the axis defined by the core of the brush. The intersection of the brush with any plane perpendicular to the core of the brush is defined by a plane section of the brush.
The reentrant angle β of intersection of the notch back and of the notch front of a given notch is defined, for each plane section of the brush, as the angle between the tangents of the two faces of the notch at the trough line. Advantageously, for any plane of cross-section of the brush, the reentrant angle β is between 90° and 160°, more preferably between 90° and 120°.
The intersection of the notch front of one notch with the envelope surface of the brush or with the notch back of a second notch defines a peak ridge and constitutes, at any point of intersection, the vertex of an emergent angle (α) whose two sides define a notch.
Preferably, the core is formed by the spiral winding of two branches of a wire, and the bristles are clamped between the wound branches of the core. Preferably, the notch back is plane or convex. Preferably, the notch front is plane or concave. According to the invention, the brush has one or more notches. Preferably, the notch or notches are obtained by trimming the brush.
The height h of the notch front for each plane of cross-section of the brush is defined as the distances between the intersection of this notch front with the envelope surface of the brush and the trough line. The value of h may vary along the axis of the core. The height H of the notch back for each plane section of the brush is defined as the distance between the intersection of this notch back with the envelope surface of the brush and the trough line. The value of H may vary along the axis of the core. Advantageously, in a given notch the notch front has a height less than the height of the notch back. Preferably, the notch front has a height of less than ⅔ of the height of the notch back, and more preferably less than ½ of the height of the notch back.
Each of the characteristics of this configuration (concavity of the faces, reentrant angle β and height of the faces) contributes to the formation of notches which are open, that is to say give open and progressive access to the trough line, the trough line being the region holding the greatest amount of mascara, then to the notch front which can support the eyelash over the entire height of this front in order to provide better spreading and combing. The notch may lie over all or part of the length of the brush, and the two faces preferably extend from one end of the brush to the other.
According to a variant of the invention, the trough line need not extend over the entire length of the brush, for example in at least one end of the brush the trough line stops before the end of the brush, either because the faces do not extend as far as this end, or because they marge into a continuous surface.
According to another variant of the invention, the notch or notches are of spiral shape, that is, the corresponding trough line and peak ridge may each have the shape of a spiral.
The longest bristles define the envelope surface of the brush. The brush may have any envelope surface: cylindrical, frustoconical, in the shape of a rugby ball, pyramidal, in the shape of a peanut, etc. It may consist of a plurality of sections with different envelope surfaces, for example a cylindrical brush ending in a frustoconical end. Thus, the brush may consist of at least two successive sections with different characteristics: sections with different envelope surfaces, sections which have notches and sections which do not. The peak ridges may optionally be trimmed so that they are rounded.
The shortest bristles of the trough line hold the greatest amount of mascara. Thus, when the user applies the brush to her eyelash, she can turn the brush between her fingers to vary the amount of mascara applied to the eyelash, with effective combing and spreading of the product. By imparting a translational movement to the brush along the eyelash, the user may also choose to increase the amount of mascara applied to the eyelash or to increase the combing, depending on the region of the brush which she applies to the eyelash.
A brush of this type makes it possible to obtain a make-up which is full-bodied, regular, elongated and curls. It is highly appropriate for making up the eyelashes, and so a second aspect of the invention provides a make-up device comprising a mascara reservoir and a mascara in the form of a brush as described above.
The brush preferably has a plurality of adjacent notches, with two neighboring notches defining between them, by their contours, at least one peak region of variable width (the width of a peak region being measured in a direction perpendicular to the centrol axis of the brush).
Furthermore, the bristles of the brushes according to the invention may be of any type: bristles with different heights, different diameters or different cross-sections and made of different materials, bristles with ends which are tapered, fork-shaped or pinhead-shaped, or which have been subjected to any type of treatment known to the person skilled in the art.
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:
The core 102 is fixed by force-fitting a stem t at the end. Bristles 104 are fitted radially between the branches of the wire 103. When the branches of the wire 103 are twisted, the bristles are clamped and held between the spiral turns of the core 102. The axis of the core 102 may coincide with the axis 1—1 of the envelope surface 101.1 of the brush as in the Figures, but these two axes could be offset. The bristles 104 may be made of natural or synthetic and optionally flocculated fibers. The brush 101 may include a mixture of bristles of different types (different diameters, different cross-sections).
The envelope surface 101.1 of the brush is a cone frustum having a central axis I—I which coincides with the axis of the core 102, and has two ends constituting plane sections of the brush: the top section 105.1 of the front of the brush and its plane base 105.2 at the back of the brush. The brush has a notch 106 consisting of two secant faces: the notch front 106.1 and the notch back 106.2 extending from one end of the brush to the other.
The face 106.1 is straight and forms an emergent angle α, constant over the entire length of the brush, with the envelope surface of the brush. The two faces 106.1 and 106.2 form between them a reentrant angle β−120° which is constant from one end of the brush to the other.
The face 106.2 is convex. The entire surface of the brush (conical surface 101.1 notch front 106.1 and notch back 106.2) contains of generatrices converging to a fixed point P lying on the central axis I—I of the brush.
The intersection of the two faces 106.1 and 106.2 defines a straight trough line 107 which also converges to P. The intersection of the notch front 106.1 with the envelope surface of the brush 101.1 defines a straight peak ridge 108.1 converging at P.
The notch back 106.2 of the brush 101 shown in
The notch front 106.1 has a height h, and the notch back has a height H, which vary along the core. The relationship h<½ H is satisfied in each plane section of the brush.
The notch 106 is obtained by trimming the brush 101, that is by cutting the bristles 104 with a clipper. The notch 106 lies on a single side of the brush, and so is not cut through the core 102.
The brush 111 shows in
The brush 201 shown in
According to a variant of the invention, provision may also be made for the pitch to be left-handed. Provision may also be made for the brush to have two successive sections: one with a left-handed pitch and the other with a right-handed pitch. The pitch is preferably the same over the entire length of the brush.
The brush 301 shown in
The brushes shown in
Provision may also be made for the notches to be separated and not adjacent, which has the result that, on the surface of the brush, uncut spaces or peak regions of the envelope surface are left between two successive notches. This possibility is illustrated by
The brush 601 shown in
The brush 701 shown in
The brush 801 shown in
The brush 1101 according to the invention and shown in
The eye make-up device shown in
An applicator intended to interact with the reservoir 920 consists of a gripping means 923 which supports the application element 930 and comprises a stem 922 and a brush 901 corresponding to those shown in FIG. 1. The gripping means 923 has the shape of a cap with a screw thread 923a which interacts with the screw thread 924a of the neck of the reservoir. The reservoir 920 is closed in leak-tight fashion by screwing the gripping means 923 onto the neck 924 of the reservoir.
When the application element 930 is extracted from the reservoir, the brush loaded with mascara passes through the wiping constriction 921. This wipes the long bristles of the peak regions much more than the short bristles (around the trough line) of the notch. During application to the eyelash, the notch supports the eyelash via the notch front, in particular via its peak ridge, in the manner of a comb, and separates and combs the hairs of the eyelash, then the notch back supports the eyelash as far as the trough line while applying mascara to the base of the hairs of the eyelash, which a second notch has just spread.
In comparison with the known notched brushes, the brush according to the invention provides the advantage of allowing support by the notches for styling and curling the hairs of the eyelash, which is more effective than in brushes with rounded concave notches. Furthermore, the fact that the notches are open allows better access to the product held around the trough line.
Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that the invention may be practiced otherwise than as specifically described herein.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4365642||Jan 8, 1981||Dec 28, 1982||Allan Costa||Cosmetic applicator and associated method|
|US4403624 *||Sep 25, 1981||Sep 13, 1983||Montgomery Robin M||Cosmetic applicator and container system|
|US4586520||Nov 2, 1983||May 6, 1986||Plough, Inc.||Mascara applicator|
|US4635659||Jan 5, 1984||Jan 13, 1987||Spatz Laboratories, Inc.||Mascara applicator|
|US4887622 *||Nov 30, 1987||Dec 19, 1989||L'oreal||Brush for the application of mascara to the eyelashes|
|US4898193||Oct 20, 1987||Feb 6, 1990||L'oreal||Brush for the application of cosmetic products|
|US4993440 *||Jul 27, 1989||Feb 19, 1991||L'oreal||Brush for the application of cosmetic products, mascara in particular|
|US5063947 *||Jan 24, 1991||Nov 12, 1991||L'oreal||Brush for applying a make-up product|
|US5224787||May 5, 1992||Jul 6, 1993||The Bridgeport Metal Goods Manufacturing Co.||Threaded cosmetics applicator with feed channels|
|US5335465 *||Jun 12, 1990||Aug 9, 1994||L'oreal||Mascara brush and method of manufacture|
|US5345644 *||Mar 25, 1993||Sep 13, 1994||L'oreal||Brush intended for the application of a cosmetic product, in particular to the eyelashes or the hair|
|US5357987||Feb 3, 1993||Oct 25, 1994||Henlopen Manufacturing Co., Inc.||Cosmetics brush with discontinous bristle face|
|US5542439||Dec 30, 1994||Aug 6, 1996||L'oreal||Brush for applying a cosmetic product|
|US5551456||Nov 3, 1994||Sep 3, 1996||Sanderson-Macleod, Inc.||Mascara brush construction|
|US5595198||Jun 7, 1995||Jan 21, 1997||Risdon Corporation||Mascara applicator and method of making the same|
|FR2605505A1||Title not available|
|FR2715038A1||Title not available|
|GB2170996A||Title not available|
|JPH0588410A||Title not available|
|JPH0833518A||Title not available|
|JPH06237818A||Title not available|
|1||English Language Abstract of FR 2 605 505.|
|2||English Language Abstract of FR 2 715 038|
|3||English Language Abstract of JP 6-237818.|
|4||English Language Abstract of JP 8-33518.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US20110030717 *||Aug 9, 2010||Feb 10, 2011||Legassie Raymond P||Multi-Lobe, Grooved Cosmetic Applicator Brush|
|USD735938||Jun 10, 2014||Aug 4, 2015||Hcp Packaging Usa, Inc.||Cosmetic applicator|
|U.S. Classification||401/129, 15/206, 132/218, 401/126, 401/122|
|International Classification||A45D34/04, B05C17/00, A46B3/18, A46B9/02, A46B11/00|
|Cooperative Classification||A46B9/028, A46B9/021|
|European Classification||A46B9/02E, A46B9/02A|
|Jun 1, 2010||CC||Certificate of correction|
|Dec 8, 2010||FPAY||Fee payment|
Year of fee payment: 12