U.S. patent application number 15/445864 was filed with the patent office on 2018-08-30 for systems, devices, and methods including a sonic makeup applicator brush.
This patent application is currently assigned to L'Oreal. The applicant listed for this patent is L'Oreal. Invention is credited to Robert E. Akridge, Gerald Keith Brewer, Kenneth A. Pilcher, Aaron David Poole.
Application Number | 20180242711 15/445864 |
Document ID | / |
Family ID | 61569429 |
Filed Date | 2018-08-30 |
United States Patent
Application |
20180242711 |
Kind Code |
A1 |
Poole; Aaron David ; et
al. |
August 30, 2018 |
SYSTEMS, DEVICES, AND METHODS INCLUDING A SONIC MAKEUP APPLICATOR
BRUSH
Abstract
A brush comprises a plurality of filaments having a crimp
structure and a J structure to provide a full distribution of
filaments at an end surface of the brush, wherein the crimp
structure of a majority of the filaments is configured with a
period length of 2 mm to 5 mm and a peak to peak length of not
greater than 0.8 mm, and the J structure is configured with a long
length about 0.02 inches to about 1.2 inches, and a difference
between the long length and a short length is about 0.2 inches to
about 0.5 inches.
Inventors: |
Poole; Aaron David; (Federal
Way, WA) ; Brewer; Gerald Keith; (Redmond, WA)
; Akridge; Robert E.; (Seattle, WA) ; Pilcher;
Kenneth A.; (Seattle, WA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
L'Oreal |
Paris |
|
FR |
|
|
Assignee: |
L'Oreal
Paris
FR
|
Family ID: |
61569429 |
Appl. No.: |
15/445864 |
Filed: |
February 28, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A46B 15/0006 20130101;
A46D 1/0253 20130101; A46B 2200/1046 20130101; A46B 13/023
20130101; A46B 2200/102 20130101; A45D 34/042 20130101; A46D 1/0276
20130101; A46B 9/021 20130101; A46D 1/0284 20130101; A46B 5/0095
20130101; A46B 15/0026 20130101; A46B 3/16 20130101; A46B 15/0008
20130101; A46B 13/008 20130101 |
International
Class: |
A45D 34/04 20060101
A45D034/04; A46B 9/02 20060101 A46B009/02; A46B 13/00 20060101
A46B013/00; A46B 13/02 20060101 A46B013/02; A46B 5/00 20060101
A46B005/00; A46B 15/00 20060101 A46B015/00 |
Claims
1. A brush, comprising a plurality of filaments having a crimp
structure and a J structure to provide a full distribution of
filaments at an end surface of the brush, wherein the crimp
structure of a majority of the filaments is configured with a
period length of 2 mm to 5 mm and a peak to peak length of not
greater than 0.8 mm, and the J structure is configured with a long
length about 0.02 inches to about 1.2 inches, and a difference
between the long length and a short length is about 0.2 inches to
about 0.5 inches.
2. The brush of claim 1, wherein a majority of the filaments have a
diameter of about 0.002 inches to about 0.02 inches.
3. The brush of claim 1, wherein the long length ends in a taper
and the short length ends in a round end or flat cut end.
4. The brush of claim 1, wherein the filaments are bent, and a bent
portion of the filament is inserted within a recess in a base of
the brush, the bent filaments define the long length and the short
length of the J structure.
5. The brush of claim 1, wherein the filaments comprise a blend of
filaments of different diameters.
6. The brush of claim 5, comprising a total weight of filaments,
wherein the total weight includes from 70 wt % to 90 wt % of 3 mil
filaments, from 5 wt % to 20 wt % of 4 mil filaments, and from 5 wt
% to 20 wt % of 5 mil filaments, wherein mil is defined as
one-thousandth (0.001) of an inch.
7. The brush of claim 1, wherein the filaments comprise a plurality
of cross-sectional shapes.
8. The brush of claim 1, wherein the filaments comprise solid and
hollow filaments.
9. The brush of claim 1, wherein the filaments are made from
polybutylene terephthalate polyester or a thermoplastic elastomer
or a combination thereof.
10. The brush of claim 1, comprising a plurality of tufts of
filaments, each tuft being separated by spaces from other tufts at
a base of the brush, and the filaments fill in the spaces between
the tufts to give a uniform distribution of the filaments at a
distal end of the brush.
11. A method for applying a liquid cosmetic, comprising: applying a
liquid cosmetic to a skin surface with the brush of claim 1
oscillating at a frequency of about 150 to about 185 Hz and at an
amplitude between about 1 degree to 18 degrees peak to peak.
12. A brush appliance, comprising: a brush head coupled to an
electro-mechanical resonator of the appliance, wherein the brush
head is configured to reciprocate at a sonic frequency; and one or
more magnets on the brush head or the appliance, wherein the one or
more magnets are configured to attract iron-containing loose
particles.
13. The brush appliance of claim 12, wherein the magnets are
permanent or electro-magnetic magnets.
14. The brush appliance of claim 12, comprising: one or more brush
head magnets positioned on the brush head; and one or more
appliance magnets positioned on the appliance adjacent to the brush
head, wherein the one or more brush head magnets are positionable
between a first and second position, the first position is a
position wherein the brush head magnets have a magnetic field
strength, and the second position is a shunt position wherein the
magnetic field strength of the brush head magnets is reduced.
15. The appliance of claim 12, comprising a timer to shut off the
appliance after being on for a predetermined time period.
16. The appliance of claim 12, wherein the brush head magnets are
positioned on a first ring, and the appliance magnets are
positioned on a second ring adjacent to the first ring, wherein the
first ring is rotatable to align the brush head magnets with the
appliance magnets.
17. A method for applying a dry cosmetic, comprising: applying a
dry cosmetic to a skin surface with a brush reciprocating at a
sonic frequency having a plurality of filaments, wherein the
majority of the filaments have a diameter of 3 to 5 mils and a
length of 0.3 to 0.7 inches.
18. The method of claim 17, wherein the dry cosmetic is a loose
powder or compacted cake.
19. The method of claim 17, wherein the brush head has an
oscillating amplitude of 2 degrees to 3 degrees.
20. The method of claim 17, comprising exfoliating skin cells with
the brush.
Description
SUMMARY
[0001] In an aspect, a brush comprises a plurality of filaments
having a crimp structure and a J structure to provide a full
distribution of filaments at an end surface of the brush, wherein
the crimp structure of a majority of the filaments is configured
with a period length of 2 mm to 5 mm and a peak to peak length of
not greater than 0.8 mm, and the J structure is configured with a
long length about 0.02 inches to about 1.2 inches, and a difference
between the long length and a short length is about 0.2 inches to
about 0.5 inches.
[0002] In an embodiment, a majority of the filaments have a
diameter of about 0.002 inches to about 0.02 inches.
[0003] In an embodiment, the long length ends in a taper and the
short length ends in a round end or flat cut end.
[0004] In an embodiment, the filaments are bent, and a bent portion
of the filament is inserted within a recess in a base of the brush,
the bent filaments define the long length and the short length of
the J structure.
[0005] In an embodiment, the filaments comprise a blend of
filaments of different diameters.
[0006] In an embodiment, the brush comprises a total weight of
filaments, wherein the total weight includes from 70 wt % to 90 wt
% of 3 mil filaments, from 5 wt % to 20 wt % of 4 mil filaments,
and from 5 wt % to 20 wt % of 5 mil filaments, wherein mil is
defined as one-thousandth (0.001) of an inch.
[0007] In an embodiment, the filaments comprise a plurality of
cross-sectional shapes.
[0008] In an embodiment, the filaments comprise solid and hollow
filaments.
[0009] In an embodiment, the filaments are made from polybutylene
terephthalate polyester or a thermoplastic elastomer or a
combination thereof.
[0010] In an embodiment, the brush comprises a plurality of tufts
of filaments, each tuft being separated by spaces from other tufts
at a base of the brush, and the filaments fill in the spaces
between the tufts to give a uniform distribution of the filaments
at a distal end of the brush.
[0011] In an aspect, a method for applying a liquid cosmetic
comprises applying a liquid cosmetic to a skin surface with the
brush of Claim 1 oscillating at a frequency of about 150 to about
185 Hz and at an amplitude between about 1 degrees to 18 degrees
peak to peak.
[0012] In an aspect, a brush appliance, comprises a brush head
coupled to an electro-mechanical resonator of the appliance,
wherein the brush head is configured to reciprocate at a sonic
frequency; and one or more magnets on the brush head or the
appliance, wherein the one or more magnets are configured to
attract iron-containing loose particles.
[0013] In an embodiment, the magnets are permanent or
electro-magnetic magnets.
[0014] In an embodiment, the brush comprises one or more brush head
magnets positioned on the brush head; and one or more appliance
magnets positioned on the appliance adjacent to the brush head,
wherein the one or more brush head magnets are positionable between
a first and second position, the first position is a position
wherein the brush head magnets have a magnetic field strength, and
the second position is a shunt position wherein the magnetic field
strength of the brush head magnets is reduced.
[0015] In an embodiment, the brush comprises a timer to shut off
the appliance after being on for a predetermined time period.
[0016] In an embodiment, the brush head magnets are position on a
first ring, and the appliance magnets are positioned on a second
ring adjacent to the first ring, wherein the first ring is
rotatable to align the brush head magnets with the appliance
magnets.
[0017] In an aspect, a method for applying a dry cosmetic comprises
applying a dry cosmetic to a skin surface with a brush
reciprocating at a sonic frequency having a plurality of filaments,
wherein the majority of the filaments have a diameter of 3 to 5
mils and a length of 0.3 to 0.7 inches.
[0018] In an embodiment, the dry cosmetic is a loose powder or
compacted cake.
[0019] In an embodiment, the brush head has an oscillating
amplitude of 2 degrees to 3 degrees.
[0020] In an embodiment, the method comprises exfoliating skin
cells with the brush.
[0021] This summary is provided to introduce a selection of
concepts in a simplified form that are further described below in
the Detailed Description. This summary is not intended to identify
key features of the claimed subject matter, nor is it intended to
be used as an aid in determining the scope of the claimed subject
matter.
DESCRIPTION OF THE DRAWINGS
[0022] The foregoing aspects and many of the attendant advantages
of this invention will become more readily appreciated as the same
become better understood by reference to the following detailed
description, when taken in conjunction with the accompanying
drawings, wherein:
[0023] FIG. 1 is a diagrammatical illustration of an oscillating
appliance and a brush head attachment having a brush in accordance
with an embodiment;
[0024] FIG. 2 is a diagrammatical illustration of a cross section
of a brush head attachment in accordance with an embodiment;
[0025] FIG. 3 is a diagrammatical illustration of a filament used
to make a brush in accordance with an embodiment;
[0026] FIG. 4 is a diagrammatical illustration of a filament used
to make a brush in accordance with an embodiment;
[0027] FIG. 5 is a schematic of an oscillating appliance in
accordance with an embodiment;
[0028] FIG. 6A is a diagrammatical illustration of a portion of an
oscillating appliance in accordance with an embodiment; and
[0029] FIG. 6B is a diagrammatical illustration of a portion of an
oscillating appliance in accordance with an embodiment.
DETAILED DESCRIPTION
[0030] The detailed description set forth below in connection with
the appended drawings where like numerals reference like elements
is intended as a description of various embodiments of the
disclosed subject matter and is not intended to represent the only
embodiments. Each embodiment described in this disclosure is
provided merely as an example or illustration and should not be
construed as preferred or advantageous over other embodiments. The
illustrative examples provided herein are not intended to be
exhaustive or to limit the claimed subject matter to the precise
forms disclosed.
[0031] The following discussion provides examples of devices that
relate to skin care, and more particularly, to brushes and the
replaceable brush heads suitable for use with a personal care
appliance for skin treatment of any exterior body part of a
subject.
[0032] In the following description, numerous specific details are
set forth in order to provide a thorough understanding of one or
more embodiments of the present disclosure. It will be apparent to
one skilled in the art, however, that many embodiments of the
present disclosure may be practiced without some or all of the
specific details. Further, it will be appreciated that embodiments
of the present disclosure may employ any combination of features
described herein.
[0033] Turning now to FIG. 1, there is shown one example of a brush
30 mounted to a brush head 20. In an embodiment, a brush 30 has a
collection of filaments and defines a filament field. The brush 30
and the brush head 20 are suitable for use with a personal care
appliance, such as appliance 22. In an embodiment, the brush head
20 is rotated, vibrated, reciprocated, oscillated, or pulsed by the
personal care appliance 22 over a subject's skin in order to apply
a composition, for example, liquid foundation, cosmetic, lotion,
cream, powder, and the like. In particular, an embodiment is
disclosed of a method for applying a dry cosmetic, and another
embodiment is disclosed for applying a liquid cosmetic.
[0034] In an aspect, a brush 30 is disclosed. In an embodiment, the
brush 30 is constructed on the brush head 20 to be used with
appliance 22. However, other embodiments of the brush 30 are
constructed to be attached to wooden or plastic handles (not
shown). In an embodiment, an oscillating appliance 20 and a brush
30 having crimped filaments is used to apply a liquid, including a
liquid foundation to the skin, face, or other areas of the body.
The method results in the application of liquid foundation smoother
than manual application, with a reduction in the visibility of fine
lines, pores, and skin imperfections, while maintaining
long-wearing results.
[0035] As shown in FIG. 1, the brush head 20 includes an outwardly
facing outward facing side 48. The opposite side is connected to
the appliance 22. In the embodiment shown, the brush head 20 has a
generally cylindrical cross-section, although other geometrical
cross-sections (i.e., triangular, elliptical, lobular, square,
etc.) may be employed. In an embodiment, the brush head 20 is
constructed out of plastics, such as nylon, polypropylene,
polyurethane, polyethylene, etc., although other materials may be
utilized, including metals, such as aluminum, titanium, etc. In an
embodiment, the brush head 20 is constructed from a combination of
plastics and metals.
[0036] The brush head 20 includes a brush portion or brush 30. FIG.
2 is a diagrammatical illustration of a cross section of the brush
30 cut close to the brush head outward surface 48, so that it can
be seen that the brush 30 is constructed from a plurality of tufts
32. In other words, the brush 30 is not constructed from a singular
collection of filaments. Each of the tufts 32 includes a plurality
of filaments. In an embodiment, the tufts 32 on the brush head
surface 48 are arranged in a variety of profiles or shapes on the
brush head surface 48. For example, tufts 32 are arranged into
diamonds, squares, circles, triangles, snowflakes, and the like. As
seen in FIG. 2, each tuft 32 is separated by spaces from other
tufts at the base of the brush head 20. However, when the filaments
of the tufts 32 are crimped, the crimped filaments fill in the
spaces between tufts 32 to give a uniform distribution of the
filaments at a distal end of the brush 30.
[0037] In an embodiment, the brush head outer surface 48 includes a
plurality of recesses, wherein each recess holds a tuft of
filaments. In an embodiment, each of the recesses, and therefore,
the tufts 32 at the outer surface 48 are separated from each other.
The characteristics of the individual filaments are such that at
the distal end 34 of the brush 30, the individual tufts 32 cannot
be perceived. In other words, the filament ends appear as a uniform
distribution of filaments rather than as tufts 32. In an
embodiment, the filaments that make up the individual tufts 32
include one or more crimps. The crimps give the brush 30 a uniform
distribution of the filaments, as opposed to individual tufts 32,
at the distal end surface 34 of the brush 30. In an embodiment, all
filament lengths are similar so that the distal end surface 34 of
the brush 30 appears flat. In another embodiment, the filament
lengths are longer in the center and shorten along the radial
direction so that the brush 30 has a tip or taper.
[0038] In an embodiment, each tuft 32 includes from about 10 to 360
individual filaments. In an embodiment, each tuft 32 includes from
about 20 to 180 individual filaments. In an embodiment, each tuft
includes 120 to 180 filaments per tuft, given a tuft hole that is
0.070 inches. In an embodiment, a density of filament tips at the
application surface is about 10,000 to 15,000 tips per square inch,
or any value in between. In an embodiment, a density of filament
tips at the application surface is about 7,500 to 20,000 tips per
square inch, or any value in between.
[0039] In an embodiment, the filaments have a length (from surface
48 to surface 34) of about 0.20 inches (5.08 millimeters) to about
1.2 inches (30.48 millimeters) or greater and a diameter in the
range of about 0.002 inches (0.0508 millimeters) to about 0.020
inches (0.508 millimeters) or greater. In an embodiment not all
filament lengths are the same. In some embodiments, one tuft of
filaments can have a longer length than another tuft of filaments.
In an embodiment, the tufts 32 near the center of the brush 30 have
longer filaments, and the length of filaments decreases as the
tufts are placed radially outward. In an embodiment, filament
lengths vary even among a single tuft 32. The filaments are
constructed out of a variety of materials, including but not
limited to elastomers, co-elastomers, polymers, co-polymers, and
blends or combinations thereof, etc. In another embodiment, the
filaments can be natural, such as mammal hair or fur.
[0040] In an embodiment, one or more of the filaments are
constructed out of polybutylene terephthalate (PBT) polyester or
thermoplastic elastomer (TPE) or a TPE/PBT blend. Representative
filaments are constructed from DuPont.TM. Tynex.RTM., Supersoft
Hytrel.RTM. thermoplastic elastomer filaments or DuPont.TM.
Natrafil.RTM. polyester with texturing additives with high
performance suitable for sonic applications. Filaments with
differing bending characteristics, such as DuPont.TM. Tynex.RTM.
nylon of differing blends (i.e., 6, 6.10, 6.12 etc.), are also
selected depending on its intended application and desired
characteristics. Other DuPont.TM. Tynex.RTM. nylons are employed to
construct the filaments, including DuPont.TM. Tynex.RTM. PTFE i.e.,
DuPont.TM. Tynex.RTM. PTFE is Nylon 6.12 (i.e., 0906). In an
embodiment, the filaments are constructed out of or include an
elastomer. In an embodiment, a filament includes an elastomeric
(e.g., TPE) inner core and a polymer (e.g., PBT) outer jacket.
Although DuPont materials are mentioned herein with their trade
names, it is understood that generic equivalents and variations may
be suitable for use also, such as: polypropylene, polyethylene,
such as DuPont.TM. Bynel.RTM., with combinations or blends thereof,
etc.
[0041] In an embodiment, the filaments have cross sections
including but not limited to solid or hollow, round, rectangular,
star, diamond, X-shape, quadralobal, and also including textured
surfaces. In an embodiment, additives are added that can either
enhance sonic resonance characteristics, or provide extra benefits
such as silver zeolite for antibacterial effects. In an embodiment,
additives are used to modify the surface energy of the filaments
and control the surface energy. In an embodiment, the filaments
also contain an anti-microbial additive that helps prevent
microbial growth.
[0042] Referring to FIG. 3, a diagrammatical illustration of a
portion of a filament 100 is shown. The filament 100 includes one
or more than one crimp structures along the length of the filament.
In an embodiment, a crimp structure in the filament 100 is defined
having a crimp period length 102 (L.sub.1) of 2 mm to 5 mm and a
peak to peak length 104 (L.sub.2) of no greater than 0.8 mm, or any
values in between these ranges. In an embodiment, a crimp structure
in the filament 100 is defined having a crimp period length 102
(L.sub.1) of 1 mm to 10 mm and a peak to peak length 104 (L.sub.2)
of no greater than 1.6 mm, or any values in between these ranges.
In an embodiment, a crimp structure in the filament 100 is defined
having a crimp period length 102 (L.sub.1) of 0.5 mm to 20 mm and a
peak to peak length 104 (L.sub.2) of no greater than 3.2 mm, or any
value in between these ranges.
[0043] Methods for crimping filaments 100 generally include the
application of heat and pressure, or by the rolling of the
filaments 100 between fluted rolls. Other methods for crimping
filaments 100 include the injection of high pressure air being
directed at the outlet of the nozzle as the filaments 100 are being
extruded. Other methods for crimping include the use of a matching
set of crimp heads, wherein one head (the die) has a cavity and the
mated head (the anvil) presses the filament 100 against the cavity
to create the crimp structure. Embodiments are not limited to any
one particular method of manufacture.
[0044] In an embodiment, a plurality of crimped filaments 100 are
joined to construct an individual tuft 32. In an embodiment, a
plurality of individual tufts 32 form the brush 30. In an
embodiment, a plurality of filaments 100 with a crimp structure
create a uniformly distributed filament surface 34 at the distal
end of the brush 30. In an embodiment, a uniform filament surface
means that when the brush 30 is viewed from the filament ends, the
filament ends are uniformly spaced from each other giving the
appearance of having no visibly discernable tufts. In other words,
the filaments' ends are uniformly spaced from each other. In an
embodiment, the filaments with a crimp structure coupled together
into a plurality of tufts deliver smoother application of liquid
foundation, for example.
[0045] In an embodiment, the crimping of filaments allows the brush
to appear fuller and bushier and appear more like a kabuki makeup
brush. Current cosmetic brushes are made by collecting a large
amount of filaments, then, gluing and fusing them together. This
gives the effect of having an even/regular distribution of filament
spacing across the entirety of the brush. With tufted brush
construction (staple set or anchor free), typical filaments (when
tufted) tend to stand up straight creating defined spaces between
tufts and open spaces even at the end of the brush. These spaces
between tufts can cause "streaking" when applying cosmetic as the
edges of the tufts can push the liquid foundation into the gaps
between tufts. Thus, by crimping the filaments 100, a brush is
achieved that has staple set tufting and overcomes problems, such
as streaking.
[0046] In an embodiment, a tuft 32 includes crimped filaments 100
having a plurality of diameters in a proportional mixture. A
plurality of filaments 100 having a crimp structure can have an
advantage of stability and inertia in operation with the
oscillating appliance 22.
[0047] In an embodiment, the crimped filaments 100 are constructed
into individual tufts 32 with a J-offset structure as shown in FIG.
4. FIG. 4 shows a recess 210 in which a bent filament 100 is
placed. It is to be understood, that each tuft 32 will include a
plurality of filaments 100. The filament 100 is bent, and the bent
side is placed inside the recess 210. The filament 100 therefore
includes a long length 202 and short length 206. The difference in
lengths 208 is call the J offset. In an embodiment, the J offset or
height differential 208 can vary from 0.20 inches to 0.50 inches.
In an embodiment, the J offset or height differential 208 can vary
from 0.10 inches to 1.0 inches. In an embodiment, the J offset or
height differential 208 can vary from 0.05 inches to 1.5 inches. In
an embodiment, the filaments 100 have a long length or height 202
of about 0.20 inches (5.08 millimeters) to about 1.2 inches (30.48
millimeters) or greater and a diameter in the range of about 0.002
inches (0.0508 millimeters) to about 0.020 inches (0.508
millimeters) or greater. In an embodiment, the filaments 100 have a
long length or height 202 of about 0.50 inches to about 2.5 inches
and a diameter in the range of about 0.001 inches to about 0.05
inches. In an embodiment, filaments 100 of the brush 30 include a
crimp structure and a J structure.
[0048] In an embodiment, the filaments 100 have an ultra-fine taper
204 at the long length end 202 and a round (non-tapered end) at the
short length end 206. In an embodiment, using an ultra-fine taper
204 at the long length end 202 and having a generally round
non-tapered end on the short length 206 on the filaments 100
minimizes the effect of exfoliation while applying foundation.
Exfoliation while applying liquid foundation at the same time can
lead to exfoliated skin being mixed into the foundation and applied
back onto the skin, leaving an uneven finish. In an embodiment,
filaments 100 of the brush 30 include a crimp structure, a J
structure, a tapered end at the long length 202 and a rounded end
at the short length end 206, or any combination thereof.
[0049] In an embodiment, the definition of an ultra-fine taper is
where the taper length 204 on the tapered end of the filament 100
is greater than 2 mm. In an embodiment, the definition of an
ultra-fine taper is where the taper length 204 on the tapered end
of the filament 100 is greater than 5 mm. In an embodiment, the
definition of an ultra-fine taper is where the taper length 204 on
the tapered end of the filament 100 is greater than 11 mm. The
taper length begins when the diameter of the filament 100 becomes
less than the maximum filament diameter.
[0050] In an embodiment, the J-offset structure in the brush 30
provides advantages in performance. In an embodiment, a J-offset
structure minimizes the risk of exfoliation by keeping the
non-tapered end further away from interaction with the skin during
application. In an embodiment, a J-offset structure creates a
filament density differential so that the filament density
increases below the J-offset so that the liquid formulation is
hindered from moving further down along filaments. In an
embodiment, the J-offset is the same for all filaments in a tuft 32
or in the brush 30. In an embodiment, the J-offsect is different
for filaments in a tuft 32 or throughout the brush 30.
[0051] In an embodiment, fine tip profiles/shapes (for example,
less than 2 mil (0.002'') cross section/diameter at the tips) on
larger diameter filaments (for example, greater than 5 mil
diameter), also apply a more even application when coupled with
oscillating sonic technology.
[0052] In an embodiment, a blend of filaments 100 is controlled
before bristling by organizing filaments into groups or bundles by
weight and/or fiber diameter. In an embodiment, a blend of
filaments 100 has a plurality of portions measuring from 5% to 95%
by weight. For example, in an embodiment, a blend of filaments 100
has the following proportions: 48 grams (80 wt %) of 3 mil
filaments; 6 grams (10 wt %) of 4 mil filaments; 6 grams (10 wt %)
of 5 mil filaments (where mil refers to a thousandth of an inch).
In an embodiment, a blend of filaments 100 has from 70 wt % to 90
wt % of 3 mil filaments. In an embodiment, a blend of filaments 100
has from 1 wt % to 20 wt % of 4 mil filaments. In an embodiment, a
blend of filaments 100 has from 1 wt % to 20 wt % of 5 mil
filaments. In all of the above, the filaments include a crimp
structure. In one embodiment, the filaments 100 include the crimp
structure, the J-offset structure, a tapered long length end, and a
rounded short length end.
[0053] The mixed diameter filaments with crimping allows for a
fuller looking brush while keeping the mass light enough to couple
more effectively with most resonant oscillating appliances.
[0054] In an aspect, a method to apply liquid foundation or any
other liquid cosmetic includes oscillating a brush in contact with
a liquid cosmetic, wherein the brush includes a plurality of tufts
of the filaments 100 having the crimp structure, the J-offset
structure or both the crimp structure and the J-offset structure.
In an embodiment, the filaments 100 further include the tapered
long length end and the rounded short length end. In an embodiment,
the filaments 100 include a blend of filament diameters in the
proportions indicated. In an embodiment, the oscillating brush head
20 operates between 40 to 350 Hz. In an embodiment, the oscillating
brush head 20 operates between a frequency 150 to 185 Hz. In an
embodiment, the oscillating brush head 20 oscillates at an angular
amplitude between 1 to 18 degrees peak to peak. In an embodiment,
the oscillating brush head 20 oscillates at an angular amplitude
between 1 to 18 degrees peak to peak.
[0055] In an embodiment, the liquid composition includes liquid
foundation. In an embodiment, the liquid composition is applied on
skin. In an embodiment, the skin is the face. In an embodiment, the
method further includes dry exfoliation of the skin which helps
prepare the skin surface to apply cosmetic, and blends smoothly to
the skin surface.
[0056] The method further includes applying an amount of foundation
on the skin, for example, with the use of finger tips, sponges, and
the like. Then, the appliance brush head combination is used by
starting at the cheek, moving the appliance 22 in a circular
motion. In an embodiment, no or very little pressure is applied.
Blending of foundation can include the forehead, nose, and chin
area, in that order. In an embodiment, longer filaments are used
around corners and curves, such as, nose, under eyes, over and
between the eyebrows, and around the lip area. Using the above
steps also keeps the liquid foundation from becoming lodged deeper
into the brush, thus making it easier to clean and stay
sanitary.
[0057] In another aspect, a method for applying dry formulations is
disclosed. In an embodiment, dry cosmetics are applied using an
appliance 22 that oscillations in the sonic range. A dry cosmetic
includes powder and compacted cosmetics, such as a pressed cake.
The method results in more effective application without creating
excessive aerosol, resulting in a smooth polished look.
[0058] FIG. 5 is a schematic showing the components of an appliance
22 for sonic application of cosmetics. The appliance 22 includes a
power supply 402. In an embodiment, a power supply includes
batteries. In an embodiment, a power supply includes alternating
current. In another embodiment, the power supply is alternating
current and the appliance includes an AC to DC transformer. The
appliance 22 includes an on/off control. In an embodiment, the
on/off control is a switch that is operated manually. However, in
another embodiment, the on/off control is based on a timer, block
406. The appliance 22 includes power modulation circuitry. In an
embodiment, power modulation circuitry includes circuitry capable
of adjusting and controlling the frequency (Hz) and the amplitude
of the oscillations (degrees). In an embodiment, the appliance
includes an electro-mechanical resonator, block 410. An
electro-mechanical resonator is a device that resonates or
oscillates at the selected frequency and amplitude by the
application of electricity. The appliance 22 includes a contact
element, block 412. In an embodiment, the contact element includes
the brush head 20 and brush 30.
[0059] In an embodiment, the addition of one or more magnets in the
brush head 20 decreases the amount of aerosol generated when
removing the cosmetic from the source and while applying the
cosmetic. Although it would be anticipated that the brush 30 would
generate a dust cloud, the specific amplitude and frequency,
however, enables the filaments to be coated with powder while
preventing excess build up. One or more magnets surrounding the
brush head 20 also helps with aerosol reduction. Then, the brush
loaded with cosmetic is contacted against the skin where the
cosmetic is needed, and caused to oscillate at sonic frequencies.
This transfers the cosmetic to the skin. During the application
step, the filaments also loosen and remove the lightly adhered dry
skin cells. These are the cells that can cause manually applied
cosmetic to look flakey and patchy due to the cells being coated
with cosmetic and being visually accentuated. In an embodiment of
the method, the exfoliation of cells allows the cosmetic to occupy
the area formerly occupied by the exfoliated cells resulting in a
smooth polished look. In an embodiment, sonic application includes
dry exfoliation of skin cells. Typically consumers use an
exfoliating cleanser to remove excessive buildup of dry or dead
skin cells. However, a brush oscillating at sonic frequencies is
used to gently remove this build up.
[0060] In an embodiment, the method is for the application of dry
cosmetics, including, but not limited to, foundations, blushes,
bronzers, eye shadow, eyeliner, concealer, and eyebrow cosmetic. In
an embodiment, a dry cosmetic includes iron oxide pigments. In an
embodiment, a foundation is a loose powder or pressed cake
formulation. In an embodiment, a foundation includes pigments, such
as iron oxide, to hide imperfections and to give a healthier look
to the skin. In an embodiment, a bronzer is similar to a
foundation, but is used on the body to give the consumer a tanned
look. In an embodiment, a blush is similar to a foundation, but
includes redder hues. Blushes are applied to the cheeks of the face
after the base foundation is applied. The redder hue gives a
healthy glow and can be used to create the illusion of higher cheek
bones. In an embodiment, a concealer is a type of foundation. A
concealer is used to hide or conceal, for example, dark circles
under the eyes and even on thin eyelids with apparent veins. In an
embodiment, an eye shadow includes highly pigmented powders that
are applied to the eyelid to accentuate the iris of the eye.
[0061] In an embodiment, the filament material for sonic
application of dry cosmetics includes, but is not limited, to
Tynex.RTM. nylon filaments, Supersoft elastomeric polymers
(Hytrel.RTM.), or a combination thereof. In an embodiment, the
filament characteristics include tip characteristics, which are
tapered or rounded, or a combination. In an embodiment, a method of
applying dry cosmetics includes using a brush having filaments,
wherein the filaments are 3 to 5 mils in diameter and 0.3 to 0.8 mm
in length, or any value in between these ranges. In an embodiment,
the optimal range of filament characteristics is dependent on the
acoustical energy generated by the handle (frequency and
amplitude).
[0062] In an embodiment, a method of applying dry cosmetics
includes a brush head oscillating amplitude of 2 to 3 degrees. In
an embodiment, a method of applying dry cosmetics includes a brush
head oscillating amplitude of 1 to 5 degrees, or any amplitude
within the range.
[0063] In the application of dry cosmetics via sonic application
several advantages may be noted. In an embodiment, a smoother
application of the cosmetic after continual use of a sonic
cleansing brush is noted. In an embodiment, dry cosmetic goes on
smoother if the skin is sonically cleansed. In an embodiment,
application of dry cosmetics directly on the skin using sonic
application results in an even and polished look without an
excessive dusty aerosol. In an embodiment, sonic application also
prepares the skin by removing the loosely adherent skin cells
resulting in a minimal cosmetic layer requirement with excellent
coverage. In an embodiment, cells are known to respond to various
stimuli including mechanical stimulation. In an embodiment, the
sonic action increases blood flow, and activates cells to
accelerate division and increase collagen.
[0064] In an embodiment, the brush head 20 includes magnets. In an
embodiment, the magnets pick up iron oxide, which is a common
ingredient in dry cosmetics. In an embodiment, the magnets prevent
excessive aerosol and splatter when the cosmetic is being picked up
by the brush and during its application.
[0065] Referring to FIGS. 6A and 6B, a magnetic brush head 320
includes a brush portion 300 having the filaments as herein
described. The brush portion 300 is embedded to or otherwise
attached to an outer ring 302 having one or more magnets 306.
Discrete brush head magnets 306 can be placed, for example, at 12
o'clock and 6 o'clock in the outer ring 302, as shown in FIG. 6A.
In an embodiment, the outer ring 302 is attached to the brush head
30 that oscillates back and forth at sonic frequencies. When the
appliance 22 is turned on and used, the magnets 306 will accumulate
residual cosmetic. In an embodiment, a second inner ring 304 is
positioned next to the inner ring 302 so that the flat surfaces of
the inner ring 302 and outer ring 304 are facing each other. In an
embodiment, the second inner ring 304 is stationary with respect to
the appliance 22. In an embodiment, the outer ring 302 includes
discrete appliance magnets 308, for example, at 3 o'clock and 9
o'clock, as shown in FIG. 6A. In an embodiment, the outer ring 302,
which is rotatable, is shifted (for example, 90 degrees) to line up
the outer ring brush head magnets 306, with the inner ring
appliance magnets 308 as shown in FIG. 6B, thus, opposing and
canceling the magnetic field causing the residual cosmetic to fall
off the magnets 306.
[0066] In an embodiment, the magnets 304 and 308 are permanent
magnets. In an embodiment, the outer ring 302 is positioned with
the inner ring 304 as in FIG. 6B, so that the permanent magnets
306, 308 are in the shunt position, and there is little magnetic
holding force which causes the cosmetic to fall off. In an
embodiment, the magnets are not permanent magnets. In an
embodiment, the magnets are electromagnets and can be turned off
enabling cleansing of the magnetic surface.
[0067] In an embodiment, a timer sequence is initiated when the
appliance 22 is turned on. In an embodiment, the timer is set to
time out after a certain period, automatically shutting off the
appliance 22. The timer period may be set from a few seconds to
infinite time out (user must turn off the device). In an
embodiment, the period of operation is 15 seconds.
[0068] In an aspect, a brush comprises a plurality of filaments
having a crimp structure to provide a full distribution of
filaments at an end surface of the brush, wherein the crimp
structure of a majority of the filaments is configured with a
period length of 2 mm to 5 mm and a peak to peak length of not
greater than 0.8 mm. In an embodiment, the brush further comprises
a J structure that is configured with a long length about 0.02
inches to about 1.2 inches, and a difference between the long
length and a short length is about 0.2 inches to about 0.5 inches.
In an embodiment, a majority of the filaments have a diameter of
about 0.002 inches to about 0.02 inches. In an embodiment, the long
length ends in a taper and the short length ends in a round end or
flat cut end. In an embodiment, the filaments are bent, and a bent
portion of the filament is inserted within a recess in a base of
the brush, the bent filaments define the long length and the short
length of the J structure. In an embodiment, the filaments comprise
a blend of filaments of different diameters. In an embodiment, the
brush comprises a total weight of filaments, wherein the total
weight includes from 70 wt % to 90 wt % of 3 mil filaments, from 5
wt % to 20 wt % of 4 mil filaments, and from 5 wt % to 20 wt % of 5
mil filaments, wherein mil is defined as one-thousandth (0.001) of
an inch. In an embodiment, the filaments comprise a plurality of
cross-sectional shapes. In an embodiment, the filaments comprise
solid and hollow filaments. In an embodiment, the filaments are
made from polybutylene terephthalate polyester or a thermoplastic
elastomer or a combination thereof. In an embodiment, the brush
comprises a plurality of tufts of filaments, each tuft being
separated by spaces from other tufts at a base of the brush, and
the filaments fill in the spaces between the tufts to give a
uniform distribution of the filaments at a distal end of the
brush.
[0069] In an aspect, a method for applying a liquid cosmetic
comprises applying a liquid cosmetic to a skin surface with the
brush of Claim 1 oscillating at a frequency of about 150 to about
185 Hz and at an amplitude between about 1 degrees to 18 degrees
peak to peak.
[0070] In an aspect, a brush appliance comprises a brush head
coupled to an electro-mechanical resonator of the appliance,
wherein the brush head is configured to reciprocate at a sonic
frequency; and one or more magnets on the brush head or the
appliance, wherein the one or more magnets are configured to
attract iron-containing loose particles. In an embodiment, the
magnets are permanent or electro-magnetic magnets. In an
embodiment, the brush comprises one or more brush head magnets
positioned on the brush head; and one or more appliance magnets
positioned on the appliance adjacent to the brush head, wherein the
one or more brush head magnets are positionable between a first and
second position, the first position is a position wherein the brush
head magnets have a magnetic field strength, and the second
position is a shunt position wherein the magnetic field strength of
the brush head magnets is reduced. In an embodiment, the brush
comprises a timer to shut off the appliance after being on for a
predetermined time period. In an embodiment, the brush head magnets
are position on a first ring, and the appliance magnets are
positioned on a second ring adjacent to the first ring, wherein the
first ring is rotatable to align the brush head magnets with the
appliance magnets.
[0071] In an aspect, a method for applying a dry cosmetic comprises
applying a dry cosmetic to a skin surface with a brush
reciprocating at a sonic frequency having a plurality of filaments,
wherein the majority of the filaments have a diameter of 3 to 5
mils and a length of 0.3 to 0.7 inches. In an embodiment, the dry
cosmetic is a loose powder or compacted cake. In an embodiment, the
brush head has an oscillating amplitude of 2 degrees to 3 degrees.
In an embodiment, the method comprises exfoliating skin cells with
the brush.
[0072] In an aspect, a brush comprises a plurality of tufts of
filaments, each tuft being separated by spaces from other tufts at
a base of the brush, and a majority of the filaments in each tuft
have a crimp defined by a peak to peak length of 2 mm to 5 mm and a
length period of not greater than 0.8 mm. In an embodiment, the
filaments of the tufts are bent, and the bent portion of the
filament is inserted within a recess in the base of the brush, the
bent filaments have a long length and a short length. In an
embodiment, the long length is about 0.02 inches to about 1.2
inches, and a difference between the long length and the short
length is about 0.2 inches to about 0.5 inches. In an embodiment, a
majority of the filaments have a diameter of about 0.002 inches to
about 0.02 inches. In an embodiment, the long length ends in a
taper and the short length ends in a round end. In an embodiment,
the filaments fill in the spaces between the tufts to give a
uniform distribution of the filaments at a distal end of the brush.
In an embodiment, each tuft has a blend of filaments of two or more
diameters.
[0073] In an aspect, a method for applying a liquid cosmetic
comprises applying a liquid cosmetic to a skin surface with an
oscillating brush having a plurality of tufts of filaments, each
tuft being separated by spaces from other tufts at a base of the
brush, and a majority of the filaments in each tuft have a crimp
defined by a peak to peak length of 2 mm to 5 mm and a length
period of not greater than 0.8 mm. In an embodiment, the brush
oscillates at a frequency of about 150 to about 185 Hz and at an
amplitude between about 1 degrees to 18 degrees peak to peak.
[0074] In an aspect, a brush appliance comprises a brush head
coupled to an electro-mechanical resonator of the appliance,
wherein the brush head is configured to reciprocate at a sonic
frequency; and one or more magnets on the brush head or the
appliance, wherein the one or more magnets are configured to
attract iron-containing loose particles. In an embodiment, the
magnets are permanent or electro-magnetic magnets. In an
embodiment, one or more brush head magnets positioned on the brush
head; and one or more appliance magnets positioned on the appliance
adjacent to the brush head, wherein the one or more brush head
magnets are positionable between a first and second position, the
first position is a position wherein the brush head magnets have a
magnetic field strength, and the second position is a shunt
position wherein the magnetic field strength of the brush head
magnets is reduced. In an embodiment, the brush head magnets are
position on a first ring, and the appliance magnets are positioned
on a second ring adjacent to the first ring, wherein the first ring
is rotatable to align the brush head magnets with the appliance
magnets.
[0075] In an aspect, a method for applying a dry cosmetic comprises
applying a dry cosmetic to a skin surface with a brush
reciprocating at a sonic frequency having a plurality of tufts of
filaments, each tuft being separated by spaces from other tufts at
a base of the brush, and a majority of the filaments in each tuft
have a crimp defined by a peak to peak length of 2 mm to 5 mm and a
length period of not greater than 0.8 mm. In an embodiment, the dry
cosmetic is a loose powder or compacted. In an embodiment, the
brush comprises a single tuft of filaments. In an embodiment, brush
filaments have a diameter of 5 mil or less. In an embodiment, brush
filaments have a diameter of 3 mil or less. In an embodiment, brush
filaments have a length of 0.6 inches or less. In an embodiment,
the brush head has an oscillating amplitude of 2 degrees to 3
degrees.
EXAMPLES
[0076] 1. Brush Head Optimization Methods
[0077] Using an in-house validated method to measure the
effectiveness of products to be evenly distributed to the skins'
surface, and by using questionnaires to evaluate the sensation felt
during and after cosmetic application, the permissible range for an
optimal brush head design for sonic cosmetic application to the
skin was determined. The method used to measure the application to
the skin is based on quantifying the level of cosmetic and percent
coverage using before and after images. A standard cosmetics brush
and a sonic brush were placed on a cake foundation compact for an
equivalent amount of time. Each cosmetic laden brush was then
applied to one of the two cheeks in a defined area for a given
period of time. An image was taken using a Canfield.TM. camera
before and after application.
[0078] Two filament types were tested including Tynex (nylon) and
Supersoft (TPE) of the following diameters: less than 3 mil, 3 mil,
4 mil, 5 mil, and greater than 5 mil, and including the following
lengths: less than 0.3, 0.3, 0.325, 0.375, 0.4, 0.5, 0.6, 0.7, and
greater than 0.8 inches. Filaments with a 5 mil diameter, at
lengths of 0.375 inches or greater, were tolerable by some
individuals. However, most subjects could not stand facial contact
for more than a few seconds.
TABLE-US-00001 Filament Length Material Diameter <0.3 0.3 0.325
0.375 0.4 0.5 0.6 0.7 >0.8 Tynex <3 mil N/T N/T N/T N/T N/T
N/T N/T N/T N/T 3 mil N/T X X X X X X X 4 mil N/T .largecircle.
.largecircle. .largecircle. .largecircle. .largecircle.
.largecircle. .largecircle. 5 mil N/T .largecircle. .largecircle.
.largecircle. .largecircle. .largecircle. .largecircle.
.largecircle. >5 mil N/T N/T N/T N/T N/T N/T N/T N/T N/T
SuperSoft <3 mil N/T N/T N/T N/T N/T N/T N/T N/T N/T 3 mil N/T X
X X X X X X 4 mil N/T X X X X X X X 5 mil N/T .largecircle.
.largecircle. .largecircle. .largecircle. .largecircle.
.largecircle. .largecircle. >5 mil N/T N/T N/T N/T N/T N/T N/T
N/T N/T Facial cosmetic brush = X Possible cosmetic brush for areas
other than face = .largecircle. Note tested = N/T
[0079] 2. Safety Study-TEWL and Redness Test
[0080] This example studied the results of the use of a brush made
from filaments having a diameter of 0.4 thousands of an inch, and a
sonic application of 1 minute exposure on the cheek with limited
movement.
[0081] In order to ensure that the optimal design range was also
safe, exfoliation-safety assays were conducted. In these safety
studies the amount of water vapor transpiring from the surface of
the skin was measured before and after using the brush (without
cosmetic) for an extended period (1 minute) in one spot without
moving it. The area was measured using a non-invasive meter. In
undamaged skin water transpires at a given rate and is known as the
transepidermal water loss (TEWL). If the skin is damaged and too
many outer layers of cells are removed, for example when someone
skins their knee, the TEWL rapidly increases. The acceleration in
TEWL is often seen in products that are too harsh and abrade the
skin. By comparing the skin before and after treatment with the
sonic brush, the level of safety of each brush head design was
determined.
[0082] The above data was collected using a brush with Supersoft
filaments having 4 mil diameter and 0.6 inches length. A treatment
time of 1 minute did not change the TEWL levels indicating that it
is safe to use. Further, no changes in redness were observed.
[0083] While illustrative embodiments have been illustrated and
described, it will be appreciated that various changes can be made
therein without departing from the spirit and scope of the
invention.
* * * * *