Applicator with a non-round core and a star-shaped bristle set

Abstract

A cosmetic applicator with a rod-shaped core and injection-molded fingers, wherein the core has a circumference surface and a non-round cross-section; the circumference surface is composed of large and small side surfaces arranged in alternating fashion; and preferably, all of the large side surfaces are the same size as one another and all of the small side surfaces are the same size as one another.

Claims

1. A cosmetic applicator, comprising: a rod-shaped core and a plurality of injection-molded fingers; wherein the core has a circumference surface and a non-round cross-section; the circumference surface is composed of large and small side surfaces arranged in alternating fashion; all of the large side surfaces are the same size as one another and all of the small side surfaces are the same size as one another; wherein a set of fingers on the small side surfaces comprises plates and a set of fingers on the large side surfaces is composed exclusively of bristles; and wherein the set of fingers on the small side surfaces is composed of at least three rows of fingers situated one after another in a line extending in a direction of a longitudinal axis of the applicator; a middle row of these fingers is composed exclusively of bristles and two outer rows are rows in which bristles and plates alternate in the direction extending along the longitudinal axis of the applicator, so that a bristle is always followed by a plate and vice versa, continuing in the direction of the longitudinal axis.

2. The cosmetic applicator according to claim 1, wherein the small side surfaces are curved convexly outward.

3. The cosmetic applicator according to claim 1, wherein the circumference surface of the core is composed of at least three large and three small side surfaces arranged one after another in alternating fashion in a circumferential direction.

4. The cosmetic applicator according to claim 1, wherein the plates each have two main surfaces, two side surfaces, and one radially outer end surface; the two main surfaces extend completely or at least essentially completely perpendicular to a longitudinal axis of the applicator and the two side surfaces diverge from each other in a V shape in a radial direction.

5. The cosmetic applicator according to claim 4, wherein the radially outer end surface is oriented diagonally so that each plate has one side surface that is longer in the radial direction and one side surface that is shorter in the radial direction.

6. The cosmetic applicator according to claim 1, wherein the plates form a chisel edge at their radially outer end surfaces.

7. The cosmetic applicator according to claim 1, wherein the middle row of fingers that make up the set of fingers on the small side surfaces has a smaller total number of fingers than the two outer rows, in that only one finger belonging to the middle row is provided at a location even with that of every second finger of the two outer rows, counting in the direction of the longitudinal axis of the applicator.

8. The cosmetic applicator according to claim 1, wherein three rows of fingers, which respectively constitute the set of fingers of one of the large side surfaces, successively form the following pattern in a direction of a longitudinal axis of the applicator: one finger in each of two outer rows of fingers is arranged in a line along a shared circumference line, one plate in each of the two outer rows of bristles and one finger in a middle row of bristles are arranged in a line along a shared circumference line, one finger in each of the two outer rows of fingers is arranged in a line along a shared circumference line, one plate in each of the two outer rows of bristles and one finger in the middle row of bristles are arranged in a line along the entire subsequent circumference line.

9. The cosmetic applicator according to claim 1, wherein the fingers of the middle row are the fingers that respectively constitute the set of fingers of a small side surface and are at least ¼ longer than the fingers of the respective laterally adjacent rows belonging to the set of fingers of the same small end surface of the cosmetic applicator.

10. The cosmetic applicator according to claim 1, wherein the set of fingers of the large side surfaces is composed of only three rows of fingers respectively situated one behind another in a line extending in a direction of a longitudinal axis of the applicator, which fingers are all bristles.

11. The cosmetic applicator according to claim 1, wherein a middle row of fingers that make up the set of fingers on the large side surfaces has a smaller total number of fingers than two outer rows, in that only one finger belonging to the middle row is provided at a location even with that of every second finger of the two outer rows, counting in a direction of a longitudinal axis of the applicator.

12. The cosmetic applicator according to claim 1, wherein three rows of fingers, which respectively constitute the set of fingers of one of the large side surfaces, successively form the following pattern in a direction of a longitudinal axis of the applicator: one finger in each of two outer rows of fingers is arranged in a line along a shared circumference line, followed by a single finger in a middle row of bristles, followed by one finger in each of the two outer rows of fingers, which fingers are arranged in a line extending along a shared circumference line, followed by a single finger in the middle row of bristles.

13. The cosmetic applicator according to claim 1, wherein the fingers, in the form of bristles that form the set of fingers of the large side surfaces, are each at least ¼ shorter than an overwhelming majority of the fingers that respectively form the set of fingers of a small side surface.

14. The cosmetic applicator according to claim 1, wherein the core of the cosmetic applicator is curved in a sickle shape in one plane.

15. The cosmetic applicator according to claim 14, wherein a small side surface of the core constitutes an outside of the sickle.

16. The cosmetic applicator according to claim 14, wherein a large side surface of the core constitutes an inside of the sickle.

17. A cosmetic applicator comprising: a rod-shaped core and plurality of fingers that are integrally connected to a circumferential surface of the core, which fingers are arranged in rows extending in a direction parallel to a longitudinal axis of the applicator, wherein in the circumferential direction, the following finger set pattern repeats a plurality of times in succession: a first row of fingers, which is composed of plates that have a maximum span (ra1) in a radial direction, immediately adjacent to this, at least one second row of fingers, which is composed of bristles that have a maximum span (ra2) in the radial direction, immediately adjacent to the one or more second rows, a third row of fingers, which is composed of plates that have a maximum span (ra1) in the radial direction, immediately adjacent to this, a fourth row of fingers that have a maximum span (ra3) in the radial direction; immediately adjacent to this, a fifth row of fingers is provided that have a maximum span (ra3*) in the radial direction; and, immediately adjacent to this, a sixth row of fingers is provided that have a maximum span (ra3) in the radial direction and where: ra2 >ra1>ra3, and at the same time, ra3 >ra3*.

18. The cosmetic applicator according to claim 17, wherein the first row of fingers, the one or more second rows of fingers, and the third row are situated on a small side surface of the core.

19. The cosmetic applicator according to claim 17, wherein the fourth and the fifth row of fingers as well as the sixth row of fingers are situated on a large side surface of the core.

20. The cosmetic applicator according to claim 17, wherein the fourth and the fifth row of fingers as well as the sixth row of fingers are situated on a side surface of the core that is curved concavely inward toward the longitudinal axis of the applicator.

21. A cosmetic applicator system having a cosmetic applicator according to claim 17 and having a wiper, wherein the wiper and a span of the fingers in the radial direction are matched to each other so that the wiper essentially does not wipe the first row and third row of fingers and the wiper wipes the one or more second rows in a region that corresponds to at least the radially outermost ⅕ of the finger and at most to the radially outermost ½ of the finger and the wiper does not wipe the fourth and fifth and sixth row of fingers.

22. The cosmetic applicator system according to claim 21, wherein the cosmetic applicator is secured to a wand and a diameter of the wand is greater than an imaginary circle drawn around the longitudinal axis of the applicator, whose radius is determined by a maximum radial span (ra3) of the fourth row of fingers or by a maximum radial span of the fingers of the fourth or fifth or sixth row of fingers that protrude the farthest in the radial direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows an exemplary embodiment of an applicator according to the invention, viewed from the front.

(2) FIG. 2 shows the same exemplary embodiment, viewed from the side.

(3) FIG. 3 shows the same exemplary embodiment, viewed from the side.

(4) FIG. 4 shows a section along the line A-A, which is indicated in FIG. 3.

(5) FIG. 5 is a very general illustration of what a finger in the form of a bristle is understood to mean in the context of the invention.

(6) FIG. 6 shows the system composed of the applicator and wiper, which is another focus of the invention.

(7) FIG. 7 is an enlarged depiction of the applicator shown in FIG. 6 in order to demonstrate how the pattern of different fingers repeats in the circumference direction.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(8) FIG. 2 gives the quickest overview of the exemplary embodiment of the applicator according to the invention 1 as described here.

(9) The applicator 1 is composed of a core 2, which in this case is curved in the form of a sickle, but can also be straight if necessary, an embodiment that is not shown in the drawing here.

(10) The core 2 could transition directly into a wand, which in turn is connected, for example, to a handle. For many application instances, however, it is advantageous if the core 2 is not integrally connected to a wand, but instead has a coupling section 3 by means of which it can be affixed to a corresponding wand, which is produced separately, possibly together with the handle.

(11) The applicator according to the invention is in particular used as a mascara applicator, which is why it is of such delicate dimensions.

(12) Unlike what is shown in the very enlarged depiction here, the total length GL of the section equipped with the bristles is usually less than 40 mm, but is most often even less than 30 mm.

(13) The maximum outer diameter Dmax of the applicator including its set of fingers is similar in size, see FIG. 4. This maximum outer diameter corresponds to the diameter of the smallest circle that can be placed around the applicator (see FIG. 4) and as a rule is ≦10 mm, typically even ≦8 mm.

(14) The coupling section in turn typically has a length of ≦12.5 mm.

(15) As is most clearly visible in FIG. 4, the core 2 does not have a circular cross-section. Instead, the core is profiled so that its circumference surface is made up of small side surfaces 4 and large side surfaces 5. As is clear from the drawing, the small side surfaces 4 are curved convexly outward relative to the center point of the core, whereas with the large side surfaces 5, preferably exactly the opposite is true: they are curved concavely inward, likewise relative to the center point of the core. The profiling of the core 2 in this case is preferably selected so that there are three small side surfaces 4 and three large side surfaces 5, which follow one after another in alternating fashion, viewed in the circumference direction.

(16) One variant would be to provide not three small and three large side surfaces of the type mentioned above, but instead four of each kind of these side surfaces.

(17) Before discussing the details, it should first be noted that the following is immediately clear from FIG. 4, which for the person skilled in the art, sets the applicator apart from the previously known applicators. The applicator has a respective row of fingers situated at the angle of 3×120° and preferably on each of its small side surfaces, which protrudes far beyond the surrounding rows of fingers, preferably by at least ¼ of its length. This gives the applicator a conspicuous, star-shaped appearance and gives the applicator a novel use behavior due to the powerful degree of exposure of this row of fingers.

(18) This is optionally promoted by the fact that the above-mentioned rows of fingers are each framed on both sides by plate-shaped fingers that are inclined so that they point toward the fingers of the protruding row of fingers. The bolstering action of these plate-shaped fingers contributes to an even greater specificity of the novel use behavior.

(19) Turning now to the details, the following must then be noted:

(20) As is most clearly visible in FIG. 2, the set of fingers of each of the small side surfaces in this case is composed of three rows R1, R2, and R3 of fingers. It should be noted that a fourth row, for example in the form of a central double- or twin row, could optionally be added, but this has been excluded from the preferred exemplary embodiments and is not shown in the drawings here.

(21) These three rows R1, R2, R3 are preferably arranged so that a middle row R2 extends parallel to the longitudinal axis of the core 2 along the middle of the small side surface 4. The two other rows of fingers R1, R3 that make up the set of fingers of the small side surfaces 4 are preferably positioned symmetrical to the middle row of fingers R1. Ideally, they are positioned such that the two side rows of fingers R1, R2 form a V-shaped arrangement relative to each other, viewed from the end, and the middle row of fingers R2 is positioned on the angle bisector between the two legs of the V.

(22) A precise comparison of FIGS. 3 and 4 shows that the two outer rows of fingers R1, R3 that constitute the set of fingers of the small side surface 4 are each composed of alternating bristles 6a and plates 6b. In other words, within a row, a bristle 6a is always followed by a plate 6b in a successively alternating fashion in the direction of the longitudinal axis.

(23) This comparison also shows that the fingers of the middle row are exclusively composed of bristles 6c.

(24) It is noteworthy that the bristle density of the middle row R2, which in this case forms part of the set of fingers of the small side surface 4, is only half as great as the finger density of the two other rows R1 and R3. Specifically, a bristle 6a is provided in the middle row R2 whenever on the right and left next to the bristle 6a, there are respective plates 6b of the two outer rows of fingers R1 and R3. Next comes one bristle 6a in each of the two outer rows of fingers R1 and R3; here, the middle row R2 has no bristle, but instead has an empty space.

(25) Further inspection, especially of FIG. 4, reveals that the fingers of the middle row of fingers R2 that forms part of the set of fingers of the small side surface 4, are at least one quarter longer in the radial direction than the fingers of the two outer rows of fingers R1 and R3 that form part of the set of fingers of the small side surface 4.

(26) In this way, the fingers 6c of the middle row of fingers R2, specifically because they are embodied in the form of long bristles, constitute a very sensitively controllable application element. They do not impair the combing function performed by the plates 6b, particularly because the middle bristles 6c are preferably provided with only a low density.

(27) It is also worth noting in connection with FIG. 4 that the plates 6b belonging to the fingers of the two outer rows of fingers R1 and R3 that form part of the set of fingers of the small side surface 4, with their outer edge viewed in the circumference direction are tangential to or extend marginally across the jump discontinuity with which the one small side surface 4 transitions into a large side surface 5, in other words, the plates are standing “on edge.”

(28) To the extent that bristles form part of the set of fingers of the small side surface 4, the general statements made below with regard to bristles of this kind also apply to the bristles here.

(29) For the plates 6b that form part of the set of fingers of the small side surface here, these plates 6b each have two main surfaces H on their front and back that are preferably oriented essentially orthogonal to the longitudinal axis of the applicator, two side surfaces S oriented in the circumference direction, and one radially outer end surface ST. The two side surfaces preferably extend away from each other in a V shape in the radial direction. The two main surfaces H are each larger in area than the two side surfaces S by a factor of at least 3 or better still, by a factor of 4. The plates 6b are nevertheless preferably embodied as quite narrow —most significantly, narrower than the plates that are usually used in cosmetic applicators. Consequently, each plate, at the height of its free end surface, relative to the central longitudinal axis, preferably occupies an arc angle AL of only ≦15°—better still of only ≦11°.

(30) It should also be noted that the radially outer end surface ST preferably extends in an inclined fashion so that each plate 6b has one side surface S that is longer in the radial direction and one that is shorter in the radial direction. On the whole, the embodiment of the plates 6b that are preferred according to the invention can be described as “necktie-like, with an end that is cut off at an angle.”

(31) It is also noteworthy that FIG. 3 clearly shows that the two main surfaces H of each plate 6b are inclined toward each other so that the respective plate 6b narrows from its base to its radially outer end.

(32) If need be, the plates 6b at their radially outer end surfaces form a chisel edge, i.e. forming a blade-like taper. This makes it easier to separate the lashes because it is possible to comb them apart from each other with the chisel edge, even if they are loaded with mascara compound.

(33) Finally, FIGS. 1 and 4 also clearly show the appearance of the set of fingers on each large side surface 5.

(34) In this case, the sets of fingers of the large side surfaces are each composed of only three rows RI, RII, and RIII, each of which is composed of fingers arranged one after another in a line extending in the direction of the longitudinal axis of the applicator, which fingers are preferably uniformly embodied in the form of bristles.

(35) Last but not least, it should be noted that fourth rows RIV, for example in the form of a central double- or twin row, can be optionally added, but this has been excluded from the preferred exemplary embodiments and is not shown in the drawings here.

(36) The placement of the rows of fingers RI through RIII relative to one another is similar to the placement of the rows of fingers R1 through R3—which form the set of fingers of the small side surfaces —relative to one another.

(37) The pattern of the fingers 7a and 7b is noteworthy here. One finger 7a in each of the outer rows of fingers RI and RIII is arranged in a line along a shared circumference line. Continuing from there in the direction parallel to the longitudinal axis, these are followed by a single finger 7b in the middle row of fingers RII. Advancing further along the longitudinal axis of the applicator, this is then followed by one finger 7a in each of the two outer rows of fingers RI and RIII, which are arranged in a line along a shared circumference line. Next, continuing onward, comes a single finger 7b in the middle row of fingers.

(38) In this case, at the free end surface of the core 2, the beginning can be composed of the fingers 7a in the two outer rows of fingers RI and RIII or can be composed of one finger 7b in the middle row of fingers RII.

(39) The above-described pattern then continues in the direction of the longitudinal axis of the applicator L until the end of the bristle set is reached.

(40) Also noteworthy is the preferred embodiment form in which the fingers of the middle row RII, with their outer, free ends, preferably terminate earlier in the radial direction (i.e. further inward in the radial direction) than the fingers of the two outer rows RI and RIII that encompass them and, together with them, form the bristle set of a large side surface.

(41) As mentioned above, the core 2 of the applicator 1 is curved in a sickle shape in one plane, namely in the plane of the drawing that is shown in FIG. 3.

(42) Ideally, a small end surface 4 constitutes the outside of the sickle, which is labeled with the arrow A in FIG. 3.

(43) It is likewise advantageous if a large side surface of the core constitutes the inside of the sickle, which is labeled with the arrow I in FIG. 3.

(44) Ideally, the core 2 and all of its fingers 6a through c and 7a, b are injection-molded in a single shot out of the same material.

(45) Alternatively, however, it is also conceivable to use overmolding to mold a plurality of individual fingers or rows of fingers in order to produce them, for example, out of a different—or differently colored—material. It is also alternatively possible to produce a plurality of individual fingers or rows of fingers by injecting a second plastic compound from the inside along a cavity of the core 2 after the production of the core, which second plastic compound penetrates the core wall at certain locations due to its pressure and then shoots into a finger- or bristle cavity situated behind this wall. In this way, a tubular core is produced, from which part of the fingers and/or bristles protrude as an integral component thereof and from which another group of fingers and/or bristles protrude, which are integrally connected —through the openings in the core—to a second plastic that fills the interior of the core.

(46) Finally, it should also be noted that the additional set of fingers, which is composed of a number of bristles 8—preferably at least 9 of them—that the applicator supports on the free end surface of its core 2, can form a very effective operative connection with the exposed bristles and the plates supporting them, which can distinguish the applicator according to the invention. These bristles preferably do not include an angle with the longitudinal axis that is bigger than 30°. The exposed bristles and plates permit a very efficient combing and separating along a greater length, whereas the bristles on the end surface make it possible to locally rework the combing and separating result, which is already good anyway.

(47) With regard to the definition of the term bristle, reference is hereby made to FIG. 5.

(48) In this context, a bristle is understood to be a rod-shaped element, whose maximum diameter Dbmax in the region above the rounding/throat with which it transitions into the core 2, is smaller by a factor of 4—better still by a factor of at least 6—than the free length of the bristle with which the bristle protrudes from the applicator core.

(49) As a result, a finger to be classified as a bristle is elastic enough that the amount AE by which the tip of the element referred to as the bristle can be elastically deflected to the side from its home position without damage to the bristle is greater than the above-defined maximum diameter Dbmax at least by a factor of 4, or better still by a factor of 5.

(50) Unlike a plate, a bristle is typically an element that can be elastically deflected in all directions perpendicular to the direction of its longitudinal axis, whereas the plate has at least two opposing directions in which it exhibits a large amount of resistance to bending over.

(51) In other words, in the broadest sense, a bristle is understood to be a flexible element.

(52) A plate does not meet this definition; specifically, the plates described here are essentially rigid in the circumference direction, i.e. they do flex a little in the circumference direction, but cannot be arbitrarily deflected by a multiple of their maximum diameter.

(53) FIGS. 6 and 7 are provided to describe another aspect of the invention as follows:

(54) The cosmetic applicator 1 has a rod-shaped core 2, which has fingers that are integrally joined to its circumference surface. The fingers are arranged in rows in a direction parallel to the longitudinal axis. With regard to the aspect that is relevant here, the applicator according to the invention is distinguished by the fact that in succession in the circumference direction, it has the following finger set pattern, which repeats several times, ideally 3 times:

(55) In FIG. 7, the finger set pattern begins at the lower end of the arrow BM. The beginning is formed by a first row of fingers that are composed of plates 6b, which are positioned one after another along the core 2 in the direction parallel to the longitudinal axis L and which have a maximum span ra1 in the radial direction, as indicated by the corresponding segment of a circle depicted in FIG. 7. The term plate has already been defined above.

(56) Continuing in the clockwise direction, immediately adjacent to this comes at least one second row of fingers, which is composed of bristles 6c. The bristles 6c are likewise positioned one after another along the core 2 in a direction parallel to the longitudinal axis. The bristles 6c have a maximum span ra2 in the radial direction, as is also indicated by a segment of a circle in FIG. 7.

(57) In FIG. 7, only a single second row of fingers in the form of bristles 6c is provided, but if needed, this row can be doubled, i.e. there are then two rows of fingers that are composed of bristles 6c, but this is not shown in the drawing here.

(58) Continuing on in the clockwise direction along the arrow BM, immediately adjacent to the second row, a third row of fingers is provided, which in turn is composed of plates 6b. The plates 6b are positioned one after another along a line in a direction parallel to the longitudinal axis L and preferably likewise have a maximum span ra1 in the radial direction.

(59) Immediately adjacent to this, once again continuing in the clockwise direction along the arrow BM, a fourth row of fingers 7a is provided. These fingers are also positioned one after another along the core 2 in a direction parallel to the longitudinal axis L. These fingers of the fourth row have a maximum span ra3 in the radial direction. The fingers of the fourth row are embodied in the form of bristles 7a.

(60) Preferably adjacent to this, once again continuing in the clockwise direction along the arrow BM, a fifth row of fingers is provided, which are composed of bristles 7b. These bristles are also positioned in a line parallel to the longitudinal axis L. These bristles 7b have a maximum span ra3* in the radial direction, as indicated by the corresponding segment of a circle shown in FIG. 7.

(61) Optionally, another sixth row of fingers is provided, which is in turn composed of bristles 7a. This sixth row is situated immediately adjacent to the fifth row, viewed in the clockwise direction along the arrow BM. The sixth row is preferably the last row of fingers before the pattern described up to this point repeats in the circumference direction. The fingers of this sixth row have a maximum span ra3 in the radial direction; in other words preferably, the radial span of the fourth row and the sixth row, if present, are identical.

(62) Ideally, and in most cases, in a row of fingers formed by a number of fingers all one behind the other in a longitudinal direction, all fingers are identical. For other cases, it is preferred if such a row of fingers consists of fingers alternatingly designed as plates and as bristles, so that in the longitudinal direction a bristle is followed by a finger.

(63) A particular relationship is maintained between the radial spans, namely ra2>ra1>ra3. Ideally at the same time, ra3>ra3*.

(64) This arrangement of bristles has a functional purpose. The applicator and the associated wiper are specifically matched to each other so that the wiper partially wipes the one or more second rows of bristles 6c, preferably specifically in a region that corresponds to at least the radially outermost fifth of the bristle 6c and at most the radially outermost half of the bristle 6c. This means that the radial span ra2 of these bristles 6c is correspondingly greater than the wiper inner diameter AD, also see FIG. 6, which clearly shows that the radially outermost quarter of the bristle 6c has a radius that is greater than the corresponding wiper inner radius AD/2 so that the outermost quarter of the bristle 6c is folded down and wiped.

(65) The first and third rows of fingers, which are embodied here as plates 6b and are situated on both sides next to the second row of fingers, perform a so-called bolstering function. Due to their embodiment in the form of plates 6b, these fingers are quite rigid; they therefore prevent the wiper from excessively folding over the second row of fingers, which are embodied here as relatively flexible bristles, when the applicator is pulled through the wiper.

(66) For this purpose, the fingers of the first and second rows, with regard to their maximum radial span, are preferably embodied so that the wiper does not wipe—or preferably, essentially does not wipe—the first and third row of fingers. The expression “to be essentially not wiped” is in any case used when at most, the radially outermost sixth—and better still, at most the radially outer eighth—of these fingers is wiped. This means that the radial span ra2 of these bristles 6c is correspondingly greater than the wiper inner diameter AD, also see FIG. 6.

(67) Another optional embodiment possesses a wiper wiping more intensely without imparting the bolstering function. The expression “to be essentially not wiped” means, in this case, that at most the radially outermost third and preferably at most the radially outermost fourth of the fingers of the first and the third row is wiped.

(68) Ideally, the pattern repeats several times in the circumference direction along the core 2 of the applicator so that the applicator is kept in a central position as it passes through the wiper because the arrangement of the set of fingers is correspondingly symmetrical. It is particularly advantageous if the pattern repeats three times.

(69) Depending on the cosmetic applicator that is claimed by the asserted claims, protection is also claimed for a cosmetic applicator that has the following additional features:

(70) The core of the applicator has a core diameter that changes and for example becomes smaller in the direction of the longitudinal axis so that the applicator tapers in the middle, preferably in approximately the same way as a peanut. Such an applicator is then distinguished by the fact that its core diameter is greater at the tip than in the middle.