Brush head having a recessed bristle, brush, method for manufacturing the same, and method for using the same

Abstract

This relates to brush heads and brushes having material application and buffing properties, and to methods of manufacturing and using them. [Solution] A first aspect of the present invention is a brush head. A second aspect of the present invention is a brush including the brush head of the present invention. A third aspect of the present invention is a method for manufacturing the brush head of the present invention. A fourth aspect of the present invention is a method for manufacturing the brush of the present invention. A fifth aspect of the present invention is a method for using the brush head of the present invention. A sixth aspect of the present invention is a method for using the brush of the present invention. A further aspect is a brush head having an outer bristle zone and a convex inner bristle zone.

Description

Cross - reference to Related Applications

[0001] This application is a continuation - in - part of U.S. Patent Application No. 14 / 447,974, entitled "Brush Head with Recessed Bristles, Brush, Method of Making and Method of Using Same", filed on July 31, 2014, which is a continuation - in - part of U.S. Design Patent Application No. 29 / 485,705, filed on March 21, 2014. Further, this application is also a continuation - in - part of U.S. Design Patent Application No. 29 / 517,382, entitled "Brush Head With Recessed Convex Bristles", filed on February 12, 2015, which is a continuation of U.S. Patent Application No. 14 / 447,974, entitled "Brush Head with Recessed Bristles, Brush, Method of Making and Method of Using Same", filed on July 31, 2014, which is a continuation - in - part of U.S. Design Patent Application No. 29 / 485,705, filed on March 21, 2014. The disclosure of each of these applications is hereby incorporated by reference in its entirety.

Technical Field

[0002] The present invention generally relates to the field of brush heads, brushes, methods of making them, and methods of using them.

Background Art

[0003] A wide variety of brush heads and brushes are used for various purposes, such as cleaning surfaces and applying materials to surfaces for industrial, hobby, artistic, and cosmetic purposes. While there are many different types and numbers of brushes, none possess the characteristics of the brush heads and brushes of the present invention, which have a concave bristle portion. No brush possessing the physical properties and material application characteristics of the present invention is known.

[0004] For example, U.S. patent no. D663,957S issued to Garcia on July 24, 2012, refers to a brush having a clear gap in the center, which is clearly intended for hobby and art purposes. The central gap is clearly too small to accept material, and even if it could accept material, the intention of this brush is clearly to rub or streak the material onto the surface for artistic effect, when used to paint surfaces in craft or art projects such as cups, plates, figurines, and paintings on canvas.

[0005] A common problem with conventional brushes is that they cannot apply cosmetics or other substances evenly, and in particular, but not limited to, when applying cosmetics, this can result in smudging, streaks, or an unnatural or undesirable appearance. However, the present invention focuses on preventing or reducing the occurrence of such smudging or streaks, although it is not necessarily required to do so.

[0006] Furthermore, another problem with conventional brushes is that they are difficult to hold and apply solid materials, particularly powdered cosmetics. (U.S. Patent No. 1,1) Patent No. 20,476 discloses a shaving brush having outer and inner bristle groups that provide a stretching member and a powder-retaining member. In Hansen, the outer end of the inner bristle is positioned in the same overall plane as the stretching end of the outer bristle and is parallel to the stretching end of the outer bristle.

[0007] Other brushes have only one tuft or bristle zone, such as U.S. Patent Application Publication 2009 / 0089949 by Mink et al., which provides a shaving brush having synthetic bristles arranged in tufts that have the look, texture, and feel of badger hair and are also antibacterial. Furthermore, U.S. Patent No. 5,195,546 issued to Cansler discloses a cosmetic brush for applying powder made from synthetic bristles, the synthetic bristles having a gentle, random, and irregular wavy structure along the length of the bristle.

[0008] Conventional brushes may not be able to easily pick up and hold solid or powdery materials such as powdered cosmetics. As a result, solid materials may fall from the brush head when transferring them to a surface, causing stains and hindering the application of the solid material to the surface. Furthermore, conventional brushes, including cosmetic brushes, may not be adequately suited for applying solid materials such as powdered cosmetics to large surface areas such as a person's neck or shoulders. As a result, it may take time to completely apply the solid material to the desired surface, and the user may have to repeatedly gather the solid cosmetic onto the brush and then apply the cosmetic to the surface in order to completely cover the surface. [Overview of the project] [Problems that the invention aims to solve]

[0009] This invention recognizes a long-standing need for brush heads and brushes that have material application and buffing properties. [Means for solving the problem]

[0010] A first aspect of the present invention is a brush head.

[0011] A second aspect of the present invention is a brush including the brush head of the present invention.

[0012] A third aspect of the present invention is a method for manufacturing the brush head of the present invention.

[0013] A fourth aspect of the present invention is a method for manufacturing the brush of the present invention.

[0014] A fifth aspect of the present invention is a method of using the brush head of the present invention.

[0015] A sixth aspect of the present invention is a method of using the brush of the present invention.

[0016] A further aspect of the present invention is a brush head for applying a solid material, comprising an outer bristle zone and an inner bristle zone defining a reservoir, wherein the inner bristle zone has a convex configuration in a longitudinal cross-section and is configured to hold a solid material such as powdered cosmetics for application to a surface. The convex inner bristle zone is preferably rounded in a longitudinal cross-section, and the inner bristle zone may have a dome shape.

[0017] Furthermore, the present invention relates to a brush head having an inner zone with a convex configuration, wherein the outer and / or inner bristle zones are tapered outward in a longitudinal cross-sectional view. Furthermore, the outer bristle zone is tapered outward in a longitudinal cross-sectional view by the tip of the bristle It may include a defined flat surface.

[0018] Furthermore, the present invention relates to a brush head having an inner zone with a convex configuration, wherein the outer and / or inner bristle zones are generally circular when viewed in a top view.

[0019] The present invention relates to a brush head having a convex inner bristle zone, wherein the inner bristle zone has a packing density higher than that of the outer zone.

[0020] Furthermore, the present invention relates to a brush head having a convex inner recessed bristle zone, which is preferably used to apply solid cosmetics such as powder cosmetics, and the solid cosmetics can be considered to include pharmaceuticals, medicinal cosmetics, or similar topical application materials.

[0021] Furthermore, the present invention relates to a system for applying a solid material to a surface using a brush head, the brush head comprising an outer bristle zone defining a reservoir and an inner recessed bristle zone, the inner bristle zone having a convex configuration in a longitudinal section view. The inner bristle zone may be rounded in a longitudinal section view and may have a dome shape. The system for applying a solid material may further comprise a handle attached to the brush head, and / or a ferrule, ring, or crimped area for holding the bristle.

[0022] Furthermore, the present invention relates to a method of using a brush head to apply cosmetics, comprising: providing a brush head having an outer bristle zone and an inner recessed bristle zone that define a reservoir, wherein the inner recessed bristle zone has a convex configuration in a longitudinal cross-sectional view; applying cosmetics to the brush head so that the cosmetics are held by the brush head; and moving the cosmetics to a surface. The cosmetics can be held on or between the bristle of the brush head. This method may include pressing the brush head into the cosmetics to be moved to the surface and / or causing the cosmetics to move in a circular or swirling motion so that the cosmetics can be picked up and held by the brush.

[0023] Furthermore, the present invention provides a method for manufacturing a brush and / or a brush head, the method comprising providing bristles, disposing the bristles in an inner zone and an outer zone, and forming the bristles into a brush head of the present invention. The method can further comprise attaching the brush head to a handle and / or securing the bristles with a crimp region, a ring, or a ferrule.

[0024] The above summary, as well as the following detailed description of the preferred embodiments of the present invention, will be better understood when considered in conjunction with the accompanying drawings. For the purpose of illustrating the present invention, the drawings show preferred embodiments at the present time. However, it should be understood that the present invention is not limited to the exact arrangements and instrumentalities shown.

Brief Description of the Drawings

[0025] [Figure 1] A perspective view from the upper right front of one embodiment of a brush head of the present invention having recessed bristles that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human subject (but not limited thereto), is schematically shown, showing an environment including a ferrule and a handle. The entire brush can include a brush head (100), a ferrule (110), and a handle (120). The brush head can include an outer bristle zone (130) and an inner recessed bristle zone (140). [Figure 2] A side view of one embodiment of a brush head of the present invention having recessed bristles that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human subject (but not limited thereto), is schematically shown. The left side, front side, and rear side are mirror images of this. The component numbers are as shown in FIG. 1. [Figure 3]Although not limited thereto, a left side, front side, and rear side view of one aspect of the brush head of the present invention according to FIG. 2 having a recessed bristle that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human object, is roughly shown. The component numbers are as shown in FIG. 1. [Figure 4] Although not limited thereto, a top view of one aspect of the brush head of the present invention having a recessed bristle that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human object, is roughly shown. The component numbers are as shown in FIG. 1. [Figure 5] Although not limited thereto, a bottom view of one aspect of the brush head of the present invention having a recessed bristle that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human object, is roughly shown. The component numbers are as shown in FIG. 1. [Figure 6] Although not limited thereto, a perspective view from the right front of one aspect of the brush of the present invention including a brush head having a recessed bristle that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human object, is roughly shown (120). The brush includes a brush head (100), a ferrule (110), and a handle (120). The brush head includes an outer bristle zone (130) and an inner recessed bristle zone (140). [Figure 7] Although not limited thereto, a right side view of one aspect of the brush of the present invention including a brush head having a recessed bristle that can form a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human object, is roughly shown, and the left side, front side, and rear side are mirror images of this. The component numbers are as shown in FIG. 6. [Figure 8]Figure 7 roughly shows left, front, and rear views of one embodiment of the brush of the present invention, which includes a brush head having a recessed bristle capable of forming a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human being. The component numbers are as shown in Figure 6. [Figure 9] The diagram roughly shows a top view of one embodiment of the brush of the present invention, which includes a brush head having a recessed bristle capable of forming a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human being. The component numbers are as shown in Figure 6. [Figure 10] The diagram roughly shows a bottom view of one embodiment of the brush of the present invention, which includes a brush head having a recessed bristle capable of forming a reservoir for a material to be applied to a surface, such as a liquid cosmetic material applied to the face of a human being. The component numbers are as shown in Figure 6. [Figure 11] The present invention broadly illustrates preferred brushes, including, but not limited to, brush heads having recessed bristles capable of forming a reservoir for materials to be applied to a surface, such as liquid cosmetic materials applied to the face of a human being, and showing preferred dimensions as follows. For example, the present invention is not limited to specific dimensions or ratios, but 200 is about 16.5 mm, 210 is about 13.5 mm, 222 is about 45 mm, 230 is about 75 mm, and 240 is about 136.5 mm. The error is generally between + / - about 0.1% to about 10%, preferably between about 0.5% to about 5%, more preferably between about 1% to about 2%. Specific sizes and ratios can be adapted to specific brush heads or brushes for specific purposes and functions. The brush heads are indicated by parallel line patterns at different angles to highlight the difference between the outer bristle zone and the inner bristle zone in order to clearly indicate the dimensions. [Figure 12]The image shows a front perspective view of an embodiment of a brush head having a convex inner bristle zone for applying solid materials to a surface, such as applying powder cosmetics to a human face, although this is not an exhaustive view. The brush head (300) generally includes an outer bristle zone (330) and an inner recessed bristle zone (340) having a convex curve in a longitudinal section view. When configured as a brush, the brush includes a handle (320). [Figure 13] This is not the only example, but a rough perspective cross-sectional view of an embodiment of a brush head having a convex inner bristle zone for applying solid materials to a surface, such as applying powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 14] This is not the only example, but a rough side view shows an embodiment of a brush head having a convex inner bristle zone for applying solid materials to a surface, such as powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 15] This is not the only example, but a rough cross-sectional view of a brush head embodiment featuring an inner bristle zone with a convex structure for applying solid materials to a surface, such as powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 16] This is not the only example, but a rough side view of an embodiment of a brush head having an inner bristle zone with a convex structure for applying solid materials to a surface, such as powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 17] This is not the only example, but a rough top view of an embodiment of a brush head having an inner bristle zone with a convex structure for applying solid materials to a surface, such as powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 18]This is not the only example, but a rough bottom view of an embodiment of a brush head having an inner bristle zone with a convex structure for applying solid materials to a surface, such as applying powder cosmetics to a human face. The component numbers are as shown in Figure 12. [Figure 19] A longitudinal section view is roughly shown of an embodiment of a brush head having an inner bristle zone with a convex configuration for applying a solid material to a surface. The bristle of the brush head (300) is fixed within a ring (310), and the preferred dimensions are as follows: The present invention is not limited to specific dimensions or ratios, and the ring (310) has a length l1 of about 55.5 mm and a width w1 of about 28.7 mm. The brush head has a length l3 of about 31 mm extending outward from the upper end of the ring, such that the total length l2 of the ring and brush head is about 86.5 mm. The error is + / - 0.1% to about 10%, preferably about 0.5% to about 5%, more preferably about 1% to about 2%. [Figure 20] The diagram roughly shows a longitudinal cross-sectional view of an embodiment of a brush head having an inner bristle zone with a convex configuration for applying solid materials to a surface, such as applying powder cosmetics to a human face, although this is not an exhaustive view. The brush optionally includes weights, and preferred dimensions are shown below. For example, the present invention is not limited to specific dimensions or ratios, and the handle (320) has a length l4 of about 60 mm and a width w2 of about 30 mm, the brush head (330) has a length l5 of about 28 mm extending from the handle, and the highest point of the inner bristle zone is lower than the height of the outer bristle zone by a difference d1 of about 1.0 mm. The error is + / - 0.1% to about 10%, preferably about 0.5% to about 5%, more preferably about 1% to about 2%. Specific sizes and ratios can be adapted to specific brush heads or brushes for specific purposes and functions. [Figure 21]The diagram roughly shows a perspective view of an embodiment of a brush head having an inner bristle zone with a convex configuration for applying solid materials to a surface, such as applying powder cosmetics to a human face, and the brush head is used to hold solid cosmetics (510) held or contained in a lid or container (500). [Modes for carrying out the invention]

[0026] Where dashed lines are shown in the drawings, such dashed lines are for illustrative purposes only and represent one possible scenario in which the present invention may be provided, but are not necessarily required.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present invention pertains. In general, the terminology and laboratory procedures used herein with respect to cosmetics, surface chemistry and surface modification, and other applicable technologies described later, are technically well-known and commonly used. Where a term is presented in the singular form, the inventors of the present invention also intend the plural form of that term, and where a term is presented in the plural form, the inventors of the present invention also intend the singular form of that term. The terminology and laboratory procedures used herein are technically well-known and commonly used unless otherwise specified. When used throughout this disclosure, the following terms should be understood to have the following meanings unless otherwise specified.

[0028] Wettability and wetting refer to the degree to which a liquid is absorbed by a surface. For example, a drop of water on a household sponge is considered to tend to wet the sponge, while a drop of water on a typical piece of glass is considered to tend not to wet the glass. Wettability or wetting may be a term of degree and not necessarily a term of absolute positive or negative result. This term and concept is technically well known (see, for example, "wetting" at http: / / en.wikipedia.org / wiki / wetting, "contact angle" at http: / / en.wikipedia.org / wiki / contact_angle, "Standard Practices for Surface Wettability of Coatings, Substrates, and Pigments by Modern Contact Angle Measurement" at http: / / www.astm.org / standards / d7334.htm, and "6) Hysteresis of Wettability, Unwettability, and Contact Angle" at http: / / web.mit.edu.nnf / educationlwettability / wetting.html).

[0029] The measurement of the contact angle also refers to the degree to which a surface absorbs a substance. For example, when a hydrophilic liquid is applied to a hydrophobic surface, it tends to behave like beads on the surface and therefore has a relatively large contact angle. When a liquid is absorbed or spreads across a surface, such as water droplets applied to cellulose filter paper, household tissue paper, or paper towels, or water droplets on glass, a small or minimal contact angle is expected. Alternatively, water droplets on the waxy surface of a leaf or the surface of a freshly waxed car are expected to have a relatively large contact angle. This term and concept is technically well known (generally, see, for example, "wetting" at http: / / en.wikipedia.org / wiki / wetting, "contact angle" at http: / / en.wikipedia.org / wiki / contact_angle, "Standard Practices for Surface Wettability of Coatings, Substrates, and Pigments by Modern Contact Angle Measurement" at http: / / www.astm.org / standards / d7334.htm, and "6) Hysteresis of Wettability, Unwettability, and Contact Angle" at http: / / web.mit.edu.nnf / educationlwettability / wetting.html).

[0030] References to “Embodiment” or “Embodiment” in this specification mean that certain features, structures, or characteristics described in relation to that embodiment are present in at least one embodiment of this disclosure. This means that it is included. The use of the phrases “in one embodiment” or “in another embodiment” in various places in this specification does not necessarily mean that all of them refer to the same embodiment, nor does it mean that they refer to separate or alternative embodiments that are mutually exclusive with each other. Furthermore, some of the various features described may be exhibited in some embodiments but not in others. Similarly, some requirements are described, but they may be requirements in some embodiments but not in others.

[0031] The terms used herein generally have their ordinary meanings in the art within the context of this disclosure and in the specific context in which each term is used. Specific terms used to describe this disclosure are discussed below and elsewhere in this specification to provide practitioners with further guidance regarding the description of this disclosure. For convenience, certain terms may be emphasized, for example, using italics and / or quotation marks. The use of emphasis does not affect the scope and meaning of the terms, which are the same in the same context whether emphasized or not. It will be understood that the same thing can be stated in two or more ways.

[0032] Therefore, alternative expressions and synonyms can be used for any one or more of the terms discussed herein. There is no particular importance to whether or not a term is detailed or discussed herein. Synonyms are provided for specific terms. Reference to one or more synonyms does not preclude the use of other synonyms. The use of examples anywhere in this specification, such as examples of any of the terms discussed herein, is for illustrative purposes only and does not intend to further limit the scope and meaning of the terms disclosed or illustrated herein. Similarly, this disclosure is not limited to the various embodiments given herein.

[0033] Without intending to further limit the scope of this disclosure, examples of apparatus, devices, methods, and their associated results according to embodiments of this disclosure are given below. It should be noted that headings or subheadings may be used in the examples for the convenience of the reader, but they are not in any way intended to limit the scope of this disclosure. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art relating to this disclosure. In case of any conflict, the definitions contained herein shall prevail.

[0034] It should be understood that the terms “front,” “rear,” “top,” “bottom,” “side,” “short,” “long,” “up,” “down,” and “downward” used herein are merely for illustrative purposes and refer to the orientation of the components as shown in the drawings. It should be understood that any orientation of the components described herein is within the scope of the present invention.

[0035] Other technical terms used herein have their usual meanings in the technical field in which they are used, as exemplified by various technical dictionaries.

[0036] This invention recognizes a long-standing need for brush heads and brushes that have material application and buffing properties.

[0037] As an introduction to the broader scope of the present invention (but not limited to these), the present invention includes several general and useful embodiments, including the following:

[0038] 1) Brush head.

[0039] 2) A brush including the brush head of the present invention.

[0040] 3) A method for manufacturing the brush head of the present invention.

[0041] 4) A method for manufacturing the brush of the present invention.

[0042] 5) A method for using the brush head of the present invention.

[0043] 6) A method for using the brush of the present invention.

[0044] These aspects of the present invention, as well as other aspects described herein, can be achieved by using the methods, products, and compositions described herein. To gain a full understanding of the scope of the present invention, it will be further recognized that various aspects of the present invention can be combined to create desirable embodiments of the present invention.

[0045] I. Brush head

[0046] A first aspect of the present invention is a brush head comprising a) an outer bristle zone and b) an inner recessed bristle zone.

[0047] As shown in Figures 1 to 11 illustrating preferred embodiments (but not limited to) of the present invention, there is an outer bristle zone that gives rise to an inner recessed bristle zone. The brush head of this embodiment of the present invention does not necessarily have to have this particular configuration.

[0048] For example, the outer zone does not necessarily have to be continuous and may have gaps, and does not have to be of a uniform thickness or height as a whole or in relation to the inner zone. The surface of the outer zone, defined by the bristle tips, may be composed of bristles of different lengths, forming various types of patterns such as wavy patterns, or may have random or seemingly random bristle lengths that give a "feathered" appearance by varying the length of the bristle in a particular pattern or random manner. The bristle may be substantially linear in its entire length, or it may be wavy in its entire length.

[0049] For example, the inner zone does not necessarily have to be continuous and may have gaps, and does not have to be of a uniform thickness or height overall or relative to the outer zone. The surface of the inner zone may be composed of bristles of different lengths, which may form various types of patterns such as wavy, or the lengths of the bristles may be random or appear random to give a "feathered" appearance.

[0050] Furthermore, the outer and inner zones can be adjacent and do not have to be as separate as shown in the figure. For example, the inner zone may have a concave configuration, which may be formed, for example, from a brush with a flat top using, for example, a hot wire to form the adjacent concave inner zone while forming the outer zone, and the outer zone may be quite wide or minimal.

[0051] The embodiments shown in Figures 12 to 21 also illustrate embodiments of the present invention having an outer bristle zone and a concave inner recessed bristle zone that defines a reservoir (however, it is not limited to these embodiments). For example, the inner and outer zones do not necessarily have to be continuous. The bristle may have caps and does not need to have a uniform thickness or height overall. The surface of the outer zone, defined by the bristle tips, may be composed of bristles of different lengths, forming various types of patterns such as flat or wavy patterns, or may have random or random-looking bristle lengths that give a "feathered" appearance by varying the length of the bristle in a specific pattern or random manner. Preferably, the bristles of the inner and outer zones are composed of the same type of material, such as polybutylene terephthalate (PBT), but are not limited to this.

[0052] In another aspect of the present invention, the brush head is either a cosmetic brush head or a non-cosmetic brush head.

[0053] A preferred embodiment of the present invention is a cosmetic applicator brush head, wherein the cosmetic is brought into the inner zone for application to the surface of the object, in a preferred embodiment, and the outer zone preferably disperses the cosmetic on the surface of the object so as to reduce the occurrence of streaks and, in other ways, result in a more uniform and satisfactory application of the cosmetic as a whole to the surface of the object.

[0054] In addition to cosmetic brush heads, the brush heads of the present invention can be used for the purpose of applying other materials to other surfaces and for other purposes. For example, the brush heads can be used to apply other pigment-containing materials such as paints and inks to surfaces. Industrial and artistic applications are part of the present invention.

[0055] Furthermore, the brush head of the present invention can also be applied to cleaning and other applications.

[0056] In that case, cleaning materials such as cleaning solutions can be applied to the brush head of the present invention as desired, and it can be used for cleaning purposes, such as dusting floors or other surfaces, or washing surfaces. Even when the material is not applied to the brush head, it is still part of the present invention.

[0057] Furthermore, the brush head of the present invention is applicable to the application of pharmaceuticals, drugs, or other substances to objects in medical applications. In this case, the material to be applied has a medicinal purpose and may include pharmaceuticals, drugs, or other substances. For example, the material can be used to treat other diseases such as acne, dermatitis, infection, immunological conditions such as poison ivy or psoriasis, or, but not limited to, skin diseases. The application of drugs, pharmaceuticals, or other substances to the skin has particular advantages in terms of concentrating treatment at the desired site, and especially when the skin is permeable to, or made permeable to, pharmaceuticals, or other substances, it also has particular advantages as an efficient route of administration for more systemic administration. The correlation between the formulation of the material to be applied and the site of application and the disease, illness, or condition to be treated is at the discretion of the practitioner. The matching of pharmaceuticals, drugs, or other substances to diseases, illnesses, or conditions, and specific formulations are technically well known and are at the discretion of the practicing physician.

[0058] In a further embodiment of the present invention, the brush head of the present invention is a cosmetic brush head.

[0059] A preferred embodiment of the present invention is a cosmetic applicator brush head, wherein the cosmetic is brought into the inner zone for application to the surface of the object, in a preferred embodiment, and the outer zone preferably disperses the cosmetic on the surface of the object so as to reduce the occurrence of streaks and, in other ways, result in a more uniform and satisfactory application of the cosmetic as a whole to the surface of the object.

[0060] Cosmetics are not limited to these, but include liquids, solids, powders, aqueous solutions, non-aqueous solutions, and emulsified liquids. This may be any type, such as lujons, polar, nonpolar, other technically known cosmetics, or combinations thereof.

[0061] In a further embodiment of the present invention, the shapes of the outer zone and the inner zone are the same or different.

[0062] As shown in the drawings, preferred embodiments of the present invention are circular or substantially circular with respect to the inner and outer zones, but are not required to be so. For example, the outer zone may be circular, and the inner zone may be circular or polygonal, such as an octagon.

[0063] In another embodiment of the present invention, the shape of the outer zone, the inner zone, or a combination thereof is generally geometric, generally non-geometric, or a combination thereof.

[0064] Various combinations of geometric or non-geometric configurations are part of the present invention. For example, the outer zone may be circular or kidney-shaped, while the inner zone may be hexagonal or amoeba-shaped, and the same or different shapes may be used, demonstrating that geometric and non-geometric shapes are also part of the present invention.

[0065] In a further embodiment of the present invention, the shape of the inner zone, the inner zone, or a combination thereof is generally circular.

[0066] Regarding the shape, the overall shape of the brush head as seen in a longitudinal section view may be flat, as shown in the drawing, with the surface defined by the tip of the bristle in the outer zone. The inner and outer zones may be the same or different in shape, individually or separately, depending on the embodiment and the desired end use of the brush head, including beveled, chamfered, random, convex, concave, geometric, non-geometric, or a combination thereof.

[0067] In the embodiments shown in Figures 12 to 21, the inner bristle zone has a convex configuration in the longitudinal section view, as best shown in Figures 13 and 15. This brush head with a convex configuration in the inner zone is particularly suitable for use in applying solid materials such as powdered cosmetics, including free powder, compressed powder, blush, and other similar cosmetics, in addition to other personal care materials such as powders, topical medicines, or medicinal cosmetics. In this embodiment, to result in an inner zone with a convex configuration having a rounded or dome shape, the bristle in the center of the inner zone has the greatest height or extends the greatest outward from the brush head, while the height of the bristle in the inner bristle zone, or the extent to which the bristle extends outward from the bottom of the brush head, gradually decreases as the distance from the center of the inner zone increases. Furthermore, the peak or highest point of the convex bristle inner zone is preferably less than or equal to the height of the outer bristle zone. In embodiments where the inner bristle zone is lower in height than the outer bristle zone, the peak or highest point of the inner zone is preferably between approximately 1 mm and 6 mm below the tip of the bristle of the outer zone. However, in alternative embodiments, the peak of the inner zone may be raised to the same height as the outer zone, or to a height slightly higher than the height of the outer zone, such as 1 to approximately 12 mm above the height of the outer zone, as long as the brush head still achieves the desired characteristics described herein.

[0068] In the brush embodiment shown in Figure 12, the inner zone can have a packing density lower, the same as, or higher than that of the outer bristle zone. Preferably, the inner zone has a packing density higher than that of the outer bristle zone, thereby improving the inner zone's ability to hold powdered cosmetics. Therefore, the bristle of the inner zone is packed more densely than that of the outer bristle zone. This reduces flexibility, making the outer bristle zone more suitable for smoothing and buffing due to its flexibility. In one embodiment, the inner bristle zone weighs 19.3 grams, while the outer bristle zone weighs 5.7 grams. In such embodiments, where the inner and outer bristle zones are made of the same material, the inner bristle zone occupies a larger portion of the brush head compared to the outer bristle zone, and furthermore, the inner bristle zone is relatively denser than the outer bristle zone. In one embodiment, the inner bristle zone has approximately 60,795 bristles, and the outer bristle zone has 17,955 bristles.

[0069] Furthermore, the outer bristle zone may have an outwardly tapered configuration when viewed in longitudinal section, as shown in Figures 15 and 16 and Figures 19-21, and may also have a flat configuration defined by the tip of the bristle of the outer zone. However, in alternative embodiments, the tip of the bristle of the outer zone may be wavy or feathery and have a random or random-looking bristle length. As shown in Figures 13 and 15, the convex inner bristle zone also preferably has an outwardly tapered configuration in longitudinal section. The outward taper results in a wider brush head that can cover a larger surface area, allowing solid materials such as bronzer or highlighter to be quickly applied to larger areas such as the neck, collarbone, and / or shoulders.

[0070] When viewed in a longitudinal section, the brush head may have other configurations depending on the embodiment, such as a configuration that is tapered outward in the figure, a configuration that is not tapered, a configuration that is tapered inward, or other configurations.

[0071] Referring here to Figures 17 and 18, a brush head having a convex inner zone preferably has a peripheral shape that is substantially circular in cross-section or plan view. The inner zone and / or outer zone may have a circular configuration. However, in alternative embodiments, the inner and outer zones may have the same peripheral shape or different peripheral shapes.

[0072] Referring here to Figure 19, an embodiment of a brush head having a convex inner bristle zone is shown, and a ring used to hold the bristle is also shown. In some embodiments, the brush and / or brush head may include a ring 310 positioned around the circumference of the brush head at the lower end of the brush head to fix or maintain the bristle in the inner and outer zones in a desired configuration, as shown in Figure 19. The ring 310 can have various shapes and sizes, and is preferably a hollow tube having at least one open end in which the bristle is positioned as shown. The ring 310 may extend the length inside the handle of the brush, or it may have a compact configuration and extend only along a portion of the length inside the handle. The bristle is positioned in the central internal region defined by the ring 310, and the ring is positioned tightly around the bristle to apply tension to it. Thus, the ring can be used to hold the bristle in a desired configuration, and glue or other adhesives may be used to further maintain the bristle in the desired configuration. In alternative embodiments, a crimped region or ferrule is provided to hold the bristle in a desired configuration.

[0073] Embodiments as shown in Figure 12, which have a convex inner zone, are particularly useful for applying solid cosmetics such as powder foundation, bronzer, and highlighter. In some embodiments, the powder cosmetics used with the brush head may have a particle size of about 1 to about 100 microns, but the brush may be suitable for applying solid materials with a variety of particle sizes and size distributions. During operation, the user can apply solids such as powder cosmetics held in or on the surface of a container, lid, or compact. The brush head can be pressed into the material. Preferably, the brush head is moved in a circular or swirling motion so that the powder cosmetic can be held on or within the brush head. By pressing the brush head into the powder cosmetic, the powder cosmetic is picked up between and / or at the tips of the bristles of the brush head, and some of the powder may settle in the gaps between the bristles. Specifically, the powder cosmetic is considered to be held in / on the bristles of the inner zone. A convex inner zone allows the bristles of the inner zone to come into contact with the powder cosmetic held in a container, on a surface, or in a lid or dish more easily when applying the powder cosmetic to the brush, compared to a brush head with a flat or concave inner bristle zone. The outer zone surrounds the inner zone and preferably has greater height, which is useful in holding the powder cosmetic in and / or on the inner bristle zone.

[0074] Powdered cosmetics are held on the brush head for application to a surface. The user can then bring the brush head, containing the solid cosmetic, into contact with a surface such as the user's skin for application. The brush head can be pressed or rubbed against the user's skin, particularly in circular, swirling, or sweeping motions, to move the solid cosmetic from the brush head to the user's skin. Again, the convex configuration facilitates contact of the inner zone with the surface during application of the solid material. The outer bristle zone helps to hold the solid cosmetic to the inner zone and is used to smooth and / or buff the cosmetic that has moved onto the surface.

[0075] In an additional embodiment of any of the various embodiments of the present invention, the bristle can be made from a natural material, a synthetic material, or a combination thereof.

[0076] The bristle can be made from any suitable material. Natural materials, including, but not limited to, animal products such as hair or plant materials such as fibers, are useful in this invention. Synthetic materials such as plastics, polymers, nylon, and other polymers or nonpolymers are also useful in this invention. In one embodiment, the bristle of the inner and / or outer zones is made of polybutylene terephthalate (PBT).

[0077] In another embodiment of the present invention, the outer bristle zone and the inner bristle zone are made of the same material, different materials, or a combination of materials.

[0078] The brush head of the present invention can be made entirely of one type of bristle, or it can be made of two or more types of bristles. In the case of two or more types of bristles, they can be mixed together throughout the brush head, or they can be provided in different proportions in different areas of the brush head. The proportion may be anywhere between 0% and 100%.

[0079] In a further embodiment of the present invention shown in Figures 1 to 11, the inner bristles zone has a higher packing density than the outer bristles zone, i.e., the inner bristles zone has more bristles per unit area. The inner bristles zone, at least in part, being lower in height than the outer bristles zone, allows the two zones to define a reservoir that can support the cosmetic for application. The higher packing density of the inner bristles zone allows the cosmetic to be supported on or within the inner bristles zone so that the cosmetic is kept within the reservoir. The exact ratio of the packing density of the inner zone to the outer zone may vary depending on the embodiment and the desired end use of the brush head. The outer bristles zone does not have as high a packing density as the inner zone, and this lower packing density allows for greater bristle movement or flexibility when applying the cosmetic. Thus, the difference in packing density can give the inner and outer zones different effects when applying the cosmetic.

[0080] In such embodiments, the inner bristle zone is preferably more densely packed than the outer bristle zone, for example, by having a greater number of bristles per unit area. The length of the bristles can affect the density of the bristles, as can be achieved by the force on the brush head to maintain its shape in place, such as by a crimper or ferrule. The packing density of the bristles themselves can be achieved during the manufacturing process by having more bristles in some areas of the brush head than in others, but this is not required.

[0081] In another embodiment of the present invention, the brush head has an inner bristle zone that is less wet than the outer bristle zone.

[0082] Wettability refers to the degree to which a liquid is absorbed by surfaces such as the inner and outer zones of the brush head. Preferably, the wettability of the inner zone is lower than that of the outer zone, so that the liquid material brought to the inner zone forms "beads" or is not absorbed into the bristle in any other way, and therefore more of it is available for application to the object at the application site.

[0083] Wettability, in some cases, is related to the physical properties of a surface and the liquid applied to it, and can be measured by contact angle measurement. For example, when a hydrophilic liquid is applied to a hydrophobic surface, it beades on the surface and is therefore considered to have a relatively large contact angle compared to a hydrophilic liquid on a hydrophilic surface. In some cases, such as when water droplets are applied to cellulose filter paper, household tissue paper, or paper towels, there is no contact angle when the liquid is absorbed by the surface. Measuring contact angle is well known in the field of materials science, and it is possible to select materials and liquids so that the liquid beades on the surface or is absorbed by the surface.

[0084] In the present invention, the bristle density described herein is also considered to be related to the wettability of the brush head, such as the inner zone. The surface can be coated or otherwise chemically modified to change the physical properties of the surface, such as hydrophobicity and hydrophilicity, and thus the material can be selected or modified to obtain the desired wettability and / or bead-forming properties for a particular liquid applied to the surface, such as the inner zone of the brush head of the present invention.

[0085] In one embodiment of the brush head of the present invention, the wettability of the inner zone is less than that of the outer zone so that a material such as a liquid applied to the inner zone is not absorbed into that area of ​​the brush. Preferably, the outer zone is more wettable with respect to a material such as a liquid applied to the inner zone.

[0086] In a further embodiment of the present invention, the inner bristle zone has a larger or smaller contact angle than the outer bristle zone with respect to a liquid, aqueous solution, polar solution, non-aqueous solution, non-polar solution, emulsion, or a combination thereof.

[0087] In a further embodiment of the present invention, the inner bristle zone is less wettable than or more wettable than the outer bristle zone with respect to aqueous solutions, polar solutions, polar liquids, or combinations thereof.

[0088] In another embodiment of the present invention, the inner bristle zone is less wettable than the outer bristle zone with respect to non-aqueous solutions, non-polar solutions, or non-polar liquids, or a combination thereof.

[0089] In a further embodiment of the present invention, the inner bristle zone is less wettable with respect to the emulsion than the outer bristle zone.

[0090] In a further aspect of the present invention, the outer bristle zone and the inner bristle zone cooperate to define a reservoir for a material, such as a liquid material, but are not limited to this. When the material is applied to a surface, the inner bristle zone can essentially provide additional material for further and sustained application of the material.

[0091] In another aspect of the present invention, the inner bristle zone may be partially wettable with respect to a material, such as a liquid material, but is not limited thereto. This aspect of the present invention is preferred when the inner bristle zone functions as a reservoir for the material. In this case, the material can "penetrate" into the inner bristle zone while still being available for application to a surface.

[0092] In another embodiment of the present invention, the outer zone has higher buffability, a lower possibility of streaking, or a combination thereof, compared to the inner zone.

[0093] Therefore, in a preferred embodiment of the present invention, during operation, the inner zone efficiently holds the material in place for application to the surface, while the outer zone functions to smooth or buff the application of the material to the surface for a desired effect. A preferred desired effect is, but is not limited to, the reduction of streaks or abrasions of the material when applied to a surface, such as liquid cosmetics applied to an object that is a human being.

[0094] However, in certain examples, such as artistic purposes, where streaks or abrasions have a desirable effect, the present invention also includes such embodiments. Such examples may be hobby paintings and other artistic expressions where imperfect blending, streaks, shading, fuzz, etc., are more desirable than a smooth, buffed appearance.

[0095] II. Brushes

[0096] A second aspect of the present invention relates to a brush comprising at least one brush head.

[0097] As generally shown in the drawings, the brush heads of the present invention are preferably provided as brushes. Each brush preferably includes, but is not limited to, at least one brush head, at least one handle, at least one crimped area, ring, or ferrule, and any combination thereof.

[0098] In a further embodiment of the present invention, each brush includes at least one handle.

[0099] As is generally shown in the drawings, the brush may include at least one handle. Alternatively, the brush may include a handle having one or more brush heads. The handle may be made of any suitable material known in the technical sense, such as wood, plastic, polymer, ceramic, glass, metal such as aluminum, or a combination of these materials, but is not limited to these. The handle may be solid or hollow, and may be a single structure or made of multiple parts. The handle may be made using any suitable material-based method, such as carving, molding, turning, injection molding, casting, or a combination thereof, but is not limited to these. In some embodiments, the handle may preferably be a handle on which the brush heads are mounted. The brush may further include a weight or weight portion located at the bottom or lower end of the handle opposite the end of the brush. The weight can serve to better balance or distribute the weight of the brush to make it easier and more comfortable to use. In addition, the weight may help to keep the brush upright on a surface such as a countertop when not in use.

[0100] In a further embodiment of the present invention, the brush may include at least one crimped area, ring, or ferrule.

[0101] As is commonly shown in the drawings, the brush may include a crimped area, a ring, or a ferrule. Generally, the crimped area or ferrule is used to maintain the bristle of the brush head in a desired configuration. The crimped area or ferrule may also be used to attach the brush head to the handle. Alternatively, the crimped area, ring, or ferrule may be integrated with the brush, such as being integrated with the handle, but not limited to these, and may not be necessary in some aspects of the invention.

[0102] em. Method for manufacturing a brush head

[0103] A third aspect of the present invention is a method for manufacturing a brush head according to the present invention, comprising a) preparing a bristle and b) forming the brush head of the present invention.

[0104] The brush head of the present invention can be manufactured using routine methods used in the art. For example, the bristle can be positioned and formed on the brush head in either its final form or a later modified form. Preferably, a crimp zone, ring, or ferrule is provided to hold the bristle in a desired configuration, but this is not required.

[0105] If the bristle is initially formed in a way that is not its final form, the bristle can be cut to bring it to its final form. For example, the brush head can be trimmed, cut with a cutting tool such as a knife, razor or scissors, cut with a laser, cut with a hot wire or other tool that uses heat or other forms of energy, burned, polished, and other methods known in the technical sense are also possible.

[0106] In either case, the brush head can be rounded or otherwise treated so that the ends of the bristle are not too sharp or do not irritate the skin. Polishing or rounding methods known in the art can be used in this method.

[0107] IV. Method for Manufacturing Brushes

[0108] A fourth aspect of the present invention is a method for manufacturing a brush of the present invention, comprising preparing a bristle, arranging the bristle in an inner zone and an outer zone, forming a brush head of the present invention, and attaching one of the brush heads of the present invention to a handle.

[0109] Once the brush head is formed, it can be attached to the handle by a crimped area, ring, or ferrule, etc. Such methods for attaching a brush head to a handle are technically known, readily available, and evident from the literature.

[0110] In some cases, a crimp zone, ring, or ferrule exists, but It doesn't need to be like that.

[0111] V. How to use the brush head

[0112] A fifth aspect of the present invention is a method of using the brush head of the present invention, comprising: a) preparing a surface to which a material is to be applied; b) preparing the brush head of the present invention; c) applying the material to the brush head; and d) moving the material from the brush head to the surface.

[0113] In another embodiment of the present invention, the surface is the object.

[0114] For specific purposes, such as cosmetic, pharmaceutical, or medical purposes, a surface is the object. The object may be any animal, including non-mammals, mammals, primates, and non-primates, as well as humans. Humans are preferred.

[0115] As described herein, the surface does not necessarily have to be an object, but can be any surface of any material to which material is desired. Brush heads are routinely used for painting in relation to occupational, recreational, or artistic purposes such as houses or fences. In specific applications of the present invention, streak reduction and buffing are desired and can be incorporated, for example, into the artistic expression of paintings using various art tools. An interesting example is the use of the present invention in imitation finishes of furniture, walls, and ceilings where tools such as the tools of the present invention are needed to achieve the desired effect.

[0116] In a preferred embodiment of the present invention, the surface is a human being, preferably skin, and more preferably an exposed surface visible to the public. In this case, the head, neck, shoulders, and face are preferred, but not required, with respect to cosmetics, as certain cosmetics are used to conceal certain defects caused by pigmentation, scarring, or other reasons. If the object is a human being, the human being may be male or female.

[0117] In a further embodiment of the present invention, the material is a cosmetic.

[0118] A preferred embodiment of the present invention is one in which the material to be applied to the object is a cosmetic, as described herein. Notwithstanding the preferred embodiment of the present invention, the present invention is clearly applicable to other arts as well.

[0119] In another embodiment of the present invention, the material is a liquid cosmetic.

[0120] Other types of cosmetics are also useful for application to surfaces using the present invention. These include powders, solids, filling powders, and the like. Liquids refer to aqueous and non-aqueous liquids as described herein, and may be polar, non-polar, organic, non-organic, aqueous, non-aqueous, emulsions, water-in-oil emulsions, oil-in-water emulsions, or any combination thereof.

[0121] In a further embodiment of the present invention, the inner and outer bristle zones define reservoirs for materials such as liquid or solid materials, the solid material being preferably in powder form. When applying the material to a surface, the inner bristle zone can essentially provide additional material for further and sustained application of the material. In embodiments where liquid cosmetics are used, the liquid cosmetic can be applied to the brush and held in the reservoir for application to the surface. The liquid cosmetic is held in the reservoir and does not flow down the bristle to the bottom of the brush head or to a handle attached to the brush head. The liquid cosmetic is then applied to the surface in a manner that avoids spills or drips. It can be applied to a surface.

[0122] In embodiments where powdered cosmetics are used, the powdered cosmetics are provided in a container, compact, or other packaging. An embodiment of a brush head having an inner bristle zone with a convex configuration can be inverted and pressed into the powdered cosmetics so that the brush head contacts the powdered cosmetics. The powdered cosmetics are held on the brush head, such as on or between the bristle zones of the inner zone, and the outer bristle zones help to keep the powder within the inner zone. The brush head with the powdered cosmetics can be applied to a surface to move the cosmetics onto the surface. Preferably, the brush head is pressed against the surface in a circular or sweeping motion, causing the powdered cosmetics to be released from the bristle zones and moved onto the surface. The outer and / or inner bristle zones can then be used to buff or smooth the cosmetics applied to the surface.

[0123] In another aspect of the present invention, the inner bristle zone may be partially wettable with respect to a material, where the material is not limited to a liquid material. This aspect of the present invention is preferred when the inner bristle zone functions as a reservoir for the material. In this case, the material is able to "penetrate" into the inner bristle zone while still being available for application to a surface.

[0124] VI. How to use the brush

[0125] A sixth aspect of the present invention is a method of using the brush of the present invention, comprising a) preparing a surface to which a material is to be applied, b) preparing the brush of the present invention, c) applying the material to the brush, and d) moving the material from the brush head to the surface.

[0126] In another embodiment of the present invention, the surface is an object. In yet another embodiment of the present invention, the surface is a human being. In yet another embodiment of the present invention, the material is a cosmetic. In another embodiment of the present invention, the material is a liquid cosmetic. In another embodiment of the present invention, the material is a powder-based cosmetic. In yet another embodiment, the material is a pharmaceutical, medicinal cosmetic, or other material intended for topical application.

[0127] As described above regarding the use of the brush head, the brush of the present invention can be used in the same or similar manner as the brush head, and the above-mentioned parts are incorporated herein by reference. [Examples]

[0128] Example 1: Technological Development

[0129] This embodiment presents and clarifies the early development of the technology, as well as the prototype brush head, brush, its manufacturing method, and its usage. Bare Escentuals cosmetic liquid products (BARESKIN® PURE, which have general characteristics of viscous liquid, non-emulsion, specific gravity 1.13-1.20, viscosity 580-1,100 cp) To evaluate the application of BRIGHTENING SERUM FOUNDATION (item number / stock number 70723) to human surfaces such as the face, several drops of this liquid product were applied to a standard large brush head of Bare Escentuals made of polymer bristle (PBT - polybutylene terephthalate), and then the liquid product on the brush head was applied to a human face. As a result, the colored liquid product appeared in streaks, the liquid wet the brush head, or soaked into the brush head.

[0130] The brush head is trimmed to a shorter length in a "square cut" configuration, and repeated application to its surface prevents the liquid product from visibly wetting the brush head surface. It does not soak into the surface of the brush head, but rather appears to form beads on the surface of this modified brush head.

[0131] An untrimmed brush head appears to possess the buffing capability desirable for cosmetic applications. A brush head with the general characteristics shown in the figure is manufactured. A liquid product is applied to the central zone of the brush head and spread onto a human surface, and streaks of the applied liquid product are reduced, or not noticeable, or not noticeable at all. While not intended to be constrained by any particular mechanism, it is thought that the bead-like liquid product on the surface of the inner zone improves the application of the liquid product to the surface, while the outer zone buffs or polishes the applied liquid material for a smooth, relatively or substantially untreated finish.

[0132] Further improvements were made, and additional prototypes and preferred embodiments were developed. The product shown in the figure is the result of these efforts.

[0133] Example 2: Preferred Embodiment of Brush Head and Brush

[0134] This embodiment, as shown in the figure, presents and clarifies a preferred aspect of the present invention.

[0135] A preferred brush head and brush for applying liquid materials such as liquid cosmetics is shown in the figure. The preferred brush head and brush is Bare Escentuals' PERFECTING FACE BRUSH, item number / stock storage number 71184, which has the general characteristics of a PBT (polybutylene terephthalate) bristle (0.7 mm PTV WAVE (wavy / irregularly shaped bristle)), anodized aluminum ferrule, and wooden handle.

[0136] As shown in Figures 1 and 6, the brush may include a brush head (100), a ferrule (110), and a handle (120). The brush head may include an outer bristle zone (130) and an inner recessed bristle zone (140). Overall, Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 all illustrate the brush heads and brushes of the present invention, such as Bare Escentuals' PERFECTING FACE BRUSH, item number / stock number 71184, which has the general characteristics of a PBT (polybutylene terephthalate) bristle (0.7 mm PTV WAVE (wavy / irregularly shaped bristle)), anodized aluminum ferrule, and wooden handle. General dimensions are shown in Figure 11. Furthermore, Figure 11 shows preferred dimensions and preferred dimensional ratios of the brushes and brush heads of the present invention in millimeters. For example, the present invention is not limited to specific dimensions or ratios, with 200 being approximately 16.5 mm, 210 approximately 13.5 mm, 222 approximately 45 mm, 230 approximately 75 mm, and 240 approximately 136.5 mm. The error is generally between approximately + / - 0.1% and 10%, preferably between approximately 0.5% and 5%, and more preferably between approximately 1% and 2%. Specific sizes and ratios can be adapted to specific brush heads or brushes for specific purposes and functions.

[0137] Example 3: Preferred method for manufacturing a preferred brush head and brush

[0138] This embodiment, as shown in Figures 1 to 11, presents and clarifies preferred aspects of the present invention.

[0139] Generally, the brush heads and brushes of the present invention are manufactured in a technically known and common manner. The bristle, not in its final configuration, is attached to the handle via a ferrule. Next, the bristle is trimmed to form the desired configuration.

[0140] As shown in Figures 1 and 6, the brush may include a brush head (100), a ferrule (110), and a handle (120). The brush head includes an outer bristle zone (130) and an inner recessed bristle zone (140). Overall, Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 all illustrate preferred brush heads and brushes of the present invention for applying liquid cosmetics to a surface.

[0141] Example 4: Preferred brush head and preferred method of using the brush

[0142] This embodiment, as shown in the figure, presents and clarifies a preferred aspect of the present invention.

[0143] The user holds the handle of a brush, such as Bare Escentuals' PERFECTING FACE BRUSH, item number / stock number 71184, and applies the cosmetic to the inner zone. In a preferred embodiment of the present invention, a few drops of liquid cosmetic material, such as BARESKIN® PURE BRIGHTENING SERUM FOUNDATION, item number / stock number 70723, are used. The user then optionally pats or dabs the cosmetic onto a surface from the inner zone of the brush head, such as the skin of the user or another object. The cosmetic can be applied to the surface in any desired pattern or amount to obtain the desired result. Thus, the cosmetic is applied to the surface. The brush is used to buff the cosmetic for a streak-free, consistent, and desired "clean" application. Optionally, the cosmetic is buffed simultaneously with application to obtain the desired result, rather than being patted or dabbed onto the object.

[0144] As shown in Figures 1 and 6, the brush may include a brush head (100), a ferrule (110), and a handle (120). The brush head includes an outer bristle zone (130) and an inner recessed bristle zone (140). Overall, Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 all illustrate preferred brush heads and brushes of the present invention for applying liquid cosmetics to a surface.

[0145] General dimensions are shown in Figure 11. Furthermore, Figure 11 shows preferred dimensions and dimensional ratios in mm for particularly preferred brushes and brush heads of the present invention. For example, the present invention is not limited to specific dimensions or ratios; 200 is approximately 16.5 mm, 210 is approximately 13.5 mm, 222 is approximately 45 mm, 230 is approximately 75 mm, and 240 is approximately 136.5 mm. Errors are generally between approximately + / - 0.1% to 10%, preferably between approximately 0.5% to 5%, and more preferably between approximately 1% to 2%. Specific sizes and ratios can be adapted to specific brush heads or brushes for specific purposes and functions.

[0146] Furthermore, users can optionally apply cosmetics to the outer zone as desired to achieve the desired results, even if it means deviating from the preferred use as indicated. It can treat an entire surface, such as a human face, or just a portion of it.

[0147] This process generally evenly distributes cosmetics such as liquid foundation, removes excess product, and results in a texture and appearance closer to skin than when using a different brush or method.

[0148] In a preferred embodiment of the present invention, the user drops a liquid foundation product into a recessed bristle area having the properties of material application and buffing. The “loaded” brush is then applied to the face in a dotting motion to distribute the product across the face. The user then rubs the dots with the brush to evenly distribute the product across the entire face or a desired smaller area. Preferably, the user does not need to apply the product to any area other than the brush and face at any point. For example, the user’s fingers and hands can preferably remain clean and free of product, or substantially free of product, throughout the entire time the brush is in use. This embodiment of the present invention has certain advantages, including, but is not limited to, that the material is not transferred or moved to other surfaces or objects such as clothing and furniture.

[0149] In a further preferred embodiment of the present invention, the inner bristle zone forms a reservoir for a material, such as a liquid material, but is not limited thereto. When applying a material to a surface, the inner bristle zone can essentially provide additional material for further and sustained application of the material.

[0150] In another preferred embodiment of the present invention, the inner bristle zone may be partially wettable with respect to a material, such as a liquid material, but is not limited thereto. This embodiment of the present invention is preferred when the inner bristle zone functions as a reservoir for the material. In this case, the material can "penetrate" into the inner bristle zone while still being available for application to a surface.

[0151] Example 5: Preferred brush head and brush

[0152] Preferred brush heads and brushes for applying solid cosmetics such as powder cosmetics are shown in embodiments in Figures 12 to 21. The preferred brush heads and brushes are Bare Escentuals' BEAUTIFUL FINISH brushes, which have the general characteristics of a wavy synthetic fiber such as a polybutylene terephthalate (PBT) bristle having a diameter of 0.07 mm, an anodized aluminum handle, and an aluminum ring for fixing and holding the bristle in place. In a preferred embodiment, the brush further includes a small weight (380) located inside the handle at the lower end of the handle opposite the brush head.

[0153] General dimensions of a preferred embodiment of the brush are shown in Figures 19 and 20. Furthermore, Figures 19 and 20 show preferred dimensions and preferred dimensional ratios in millimeters of a preferred brush and brush head for applying solid materials according to the present invention. For example, the present invention is not limited to specific dimensions or ratios, and the handle (320) has a length l4 of about 60 mm and a width w2 of about 30 mm. Thus, the ratio of the length of the handle to the width of the handle may be between about 4:1 and 1:1, and is 2:1 in a preferred embodiment. The handle (320) is preferably of a generally cylindrical shape. The ring (310) preferably has a length l1 of about 55.5 mm and a width w1 of about 28.7 mm so that the ring fits snugly inside the handle, and the brush head has a length l3 of about 31 mm extending from the ring so that the overall length l2 of the ring and brush head is about 86.5 mm. The outer bristle zone (330) has a length l5 extending from the handle, approximately 28 mm, such that the overall length l6 of the brush, including the handle and brush head, is approximately 88 mm. The highest point (340) of the inner zone is lower than the outer bristle zone by a difference d1 of approximately 1.0 mm. The error is + / - 0.1% to approximately 10%, preferably approximately 0.5% to approximately 5%, and more preferably approximately 1% to approximately 2%. Specific sizes and ratios can be adapted to specific brush heads or brushes for specific purposes and functions.

[0154] Example 6: How to use the brush head and brush

[0155] This embodiment presents and clarifies preferred aspects of the present invention, as shown in Figures 12 to 21. Figure 21 shows an embodiment of a brush used in combination with a solid cosmetic (510), the brush being used to transfer the solid cosmetic stored in a container (500) to the surface.

[0156] When using, the user grasps the handle of the brush, such as Bare Escentuals' BEAUTIFUL FINISH brush, inverts the brush, and places the brush head onto a container or lid containing a solid material, such as Bare Escentuals' ORIGINAL Foundation Broad Spectrum SPF 15, which provides a circular lid containing solid foundation. The user can apply downward pressure to engage the brush head, particularly the convex inner zone of the brush head, with the solid material, and move the brush in a circular or swirling motion to pick up and hold the solid cosmetic with the brush head. The cosmetic is held on and / or within the inner bristles zone, while the outer bristles zone helps to hold the cosmetic within the brush head. The user can then move the solid material by bringing the brush head into contact with a surface such as human skin. The user can apply the material to the surface by applying slight pressure and moving the brush in a circular or brushing motion. The wide brush head allows the brush head to quickly cover a large area and adhere a large amount of product to the surface. Next, the brush head, especially the outer zone of the brush head, can be used to buff and smooth the cosmetic onto the surface, resulting in a fast, even, and controlled surface coating.

[0157] All publications, including patent documents and scientific papers, referenced in this application, the list of references, and the accompanying documents, are incorporated by reference in their entirety for all purposes to the same extent as each individual publication is incorporated by reference individually.

[0158] All headings are for the reader's convenience and, unless otherwise specified, should not be used to limit the meaning of the text that follows them.

[0159] Those skilled in the art will understand that the embodiments described above can be modified without departing from the broader concept of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but encompasses modifications included in the technical idea and scope of the invention as defined by the appended claims.

Claims

1. A brush head for applying solid materials, It features an outer bristle zone and an inner recessed bristle zone that define the reservoir, The brush head has an inner recessed bristle zone which is convex in a longitudinal cross-section and is configured to hold a solid material for application to a surface.

2. The brush head according to claim 1, wherein the inner recessed bristle zone is rounded in a longitudinal cross-section.

3. The brush head according to claim 1, wherein the outer bristle zone has a flat surface determined by the tip of the bristle.

4. The brush head according to claim 1, wherein the outer bristle zone has a tapered structure in the outward direction.

5. The brush head according to claim 1, wherein the peripheral shape of the outer bristle zone in the cross-section is generally circular.

6. The brush head according to claim 5, wherein the peripheral shape of the inner recessed bristle zone in the cross-section is generally circular.

7. The brush head according to claim 1, wherein the inner recessed bristle zone has a packing density higher than that of the outer bristle zone.

8. The brush head according to claim 1, wherein the highest point of the inner recessed bristle zone is lower than the height of the outer bristle zone.

9. The brush head according to claim 1, wherein the solid material is a powdered cosmetic.

10. The brush head according to claim 1, wherein the solid material is a pharmaceutical product.

11. A system for applying cosmetics using a brush head, The brush head features an outer bristle zone and an inner recessed bristle zone that define the reservoir. The system wherein the inner recessed bristles zone is convex in a longitudinal cross-section and is configured to hold cosmetics for application to a surface.

12. The system according to claim 11, wherein the inner bristle zone is rounded in a longitudinal cross-section.

13. The system according to claim 11, further comprising a handle.

14. The system according to claim 13, further comprising at least one crimped region, ring, or ferrule.

15. The system according to claim 11, wherein the cosmetic is a powder cosmetic.

16. The brush head according to claim 11, wherein the cosmetic is a pharmaceutical.

17. A method of using a brush head to apply cosmetics, A brush head having an outer bristle zone and an inner recessed bristle zone that define a reservoir, wherein the inner recessed bristle zone is convex in its longitudinal cross-section, The cosmetic is applied to the brush head so that the cosmetic is held by the brush head, The aforementioned cosmetic product is moved to the surface. Methods that include...

18. The method according to claim 17, wherein applying the cosmetic to the brush head includes pressing the brush head into the cosmetic so that the cosmetic is held on and / or between the bristles of the inner recessed bristle zone.

19. The method according to claim 17, wherein moving the cosmetic onto the surface includes pressing the brush head against the surface so that the cosmetic comes into contact with the surface.

20. The method according to claim 19, wherein pressing the brush head against the surface includes moving the brush head on the surface in a circular motion or a sweeping motion.

21. The method according to claim 17, further comprising moving the outer bristle zone in contact with the surface to buff and / or smooth the cosmetic.

22. The method according to claim 17, wherein the cosmetic is a powder cosmetic.

23. The method according to claim 17, wherein the cosmetic is a pharmaceutical product.

24. A method for manufacturing a brush head, Prepare the bristle, The bristle is positioned in the inner recessed bristle zone and the outer bristle zone, A brush head comprising an outer bristle zone and an inner recessed bristle zone that define a reservoir, wherein the inner recessed bristle zone forms a brush head that is convex in its longitudinal cross-section. Methods that include...

25. The method according to claim 24, further comprising attaching the brush head to a handle.

26. The method according to claim 24, further comprising fixing the bristle within a crimped region, a ring, or a ferrule.

27. A method for manufacturing a brush head according to claim 1, Prepare the bristle, The bristle is positioned in the inner recessed bristle zone and the outer bristle zone, To form the brush head described in claim 1 A method for manufacturing a brush head, including the method described above.

28. The brush head is further attached to the handle, according to claim 27. A method for manufacturing cypress heads.

29. A method for manufacturing a brush head according to claim 27, further comprising fixing the bristle within a crimped region, a ring, or a ferrule.

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