US20180213923A1 - Molded Bristle Brushes Comprised Of Helical Segments - Google Patents

Molded Bristle Brushes Comprised Of Helical Segments Download PDF

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Publication number
US20180213923A1
US20180213923A1 US15/876,356 US201815876356A US2018213923A1 US 20180213923 A1 US20180213923 A1 US 20180213923A1 US 201815876356 A US201815876356 A US 201815876356A US 2018213923 A1 US2018213923 A1 US 2018213923A1
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US
United States
Prior art keywords
helical
brush head
segments
core
bristle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/876,356
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English (en)
Inventor
Francis Corbellini
Herve F. Bouix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELC Management LLC
Original Assignee
ELC Management LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ELC Management LLC filed Critical ELC Management LLC
Priority to US15/876,356 priority Critical patent/US20180213923A1/en
Publication of US20180213923A1 publication Critical patent/US20180213923A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/023—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in hair brushes, e.g. hair treatment, dyeing, streaking
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/025—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups the bristles or the tufts being arranged in an angled position relative to each other
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/104—Hair brush
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • A46B2200/1053—Cosmetics applicator specifically for mascara

Definitions

  • the invention is in the field of cosmetic applicators, and concerns molded brushes whose bristles are arranged in helical segments.
  • the unique bristle arrangements offer new experiences in delivery and grooming of eyelashes and eyebrows.
  • helix and “spiral” as synonymous.
  • the properties of helices are well known in geometry.
  • a spiral or helix is a three-dimensional curve that has a central, longitudinal axis. At any point on the helix, the angle between the tangent line and the axis is constant.
  • the pitch of a helix is the height of one complete helix turn, measured parallel to the axis of the helix.
  • a double or triple helix consists of two or three (typically congruent) spirals that share the same axis, differing by a translation along the axis.
  • a brush head with a cylindrical core has a central, longitudinal axis.
  • Many arrangements of bristles on the cylindrical core are known, including spiral (i.e. helical) arrangements.
  • spiral arrangement is the twisted wire core brush.
  • the bristles In this classic brush, the bristles typically form one continuous helix from one end of the bristle envelope to the other.
  • the “bristle envelope” is the three dimensional surface defined by the free ends of all of the bristles in the brush head.)
  • the brush is made up of exactly one helical segment of bristles which always twists in the same direction, from one end of the brush to the other.
  • U.S. Pat. No. 6,341,913 discloses a twisted wire core brush in which a first portion of the bristles spirals along the core in a clockwise direction, and a second portion of bristles spirals down the core in a counterclockwise direction.
  • the two bristle portions meet in the middle of the wire core to form one continuous arrangement of bristles from one end of the wire core to the other. This is unlike the present invention in which the bristles emanating from a core are arranged in multiple discrete helical segments.
  • Each of U.S. Pat. No. 4,600,328 and U.S. Pat. No. 5,611,361 disclose a dual-brush mascara applicator.
  • Each brush comprises a twisted wire core that has a spiral arrangement of bristles, such that the bristles on one brush spiral in the clockwise direction, while the bristles on the second brush spiral in the counterclockwise direction.
  • the bristle portion is one continuous spiral that extends from one end of the wire core to the other. This is unlike the present invention in which all of the bristles emanate from a single core, and are arranged in multiple discrete helical segments, some of which spiral in a clockwise direction and some of which spiral in a counterclockwise direction on the single core.
  • the invention includes a molded bristle applicator having a cylindrical core on which are arranged a number of discrete helical bristle segments. Depending on the embodiment, all of the discrete helical segments spiral in the same direction (i.e. clockwise or counterclockwise) around the axis of the core, or some helical segments spiral in one direction and some in the opposite direction.
  • FIG. 1A is an elevation view of a first embodiment of molded brush comprised of helical segments.
  • FIG. 1B depicts the brush of FIG. 1A , partially constructed.
  • FIG. 2A is an elevation view of a second embodiment of molded brush comprised of helical segments.
  • FIG. 2B depicts the brush of FIG. 2A , partially constructed.
  • FIG. 3A is an elevation view of a third embodiment of molded brush comprised of helical segments.
  • FIG. 3B depicts the brush of FIG. 3A , partially constructed.
  • FIG. 4A is an elevation view of a fourth embodiment of molded brush comprised of helical segments.
  • FIG. 4B depicts the brush of FIG. 4A , partially constructed.
  • FIG. 5A is an elevation view of a fifth embodiment of molded brush comprised of helical segments.
  • FIG. 5B depicts the brush of FIG. 5A , partially constructed.
  • FIG. 6A is an elevation view of a sixth embodiment of molded brush comprised of helical segments.
  • FIG. 6B depicts the brush of FIG. 6A , partially constructed.
  • FIG. 7A is an elevation view of a seventh embodiment of molded brush comprised of helical segments.
  • FIG. 7B depicts the brush of FIG. 7A , partially constructed.
  • FIG. 7C is a perspective view of the brush of FIG. 7A , partially constructed.
  • FIG. 8A is an elevation view of a eighth embodiment of molded brush comprised of helical segments.
  • FIG. 8B depicts the brush of FIG. 8A , partially constructed.
  • FIG. 8C is a perspective view of the brush of FIG. 8A , partially constructed.
  • FIG. 9A is an elevation view of a ninth embodiment of molded brush comprised of helical segments.
  • FIG. 9B depicts the brush of FIG. 9A , partially constructed.
  • FIG. 9C is an end view of the brush of FIG. 9A ; the varying bristle heights are evident.
  • FIGS. 10A-10E conceptualize the construction of one embodiment of a brush according to the invention.
  • a brush head ( 10 ) is comprised of a molded core ( 1 ) and multiple discrete helical segments ( 3 , 3 ′) of molded bristles ( 3 a ) that arise from the core.
  • the core is comprised of at least one straight section and, optionally, one or more curved sections.
  • the straight section of the core is straight, except for slight deviations due to manufacturing tolerances.
  • the straight section of the core is defined by a longitudinal axis, A-A. This axis is also the helical axis around which the helical segments of bristles are arranged on the straight section of the core.
  • each bristle segment may twist (or spiral) in a clockwise direction or a counterclockwise direction, but not both.
  • bristle segments that twist clockwise are labelled ( 3 )
  • those that twist counter-clockwise are labelled ( 3 ′), as shown in FIG. 1B .
  • FIGS. 10A-10E is a conceptualization of the construction of one embodiment of a brush head according to the invention.
  • FIG. 10A shows a core ( 1 ) depending from a stem ( 2 ). The core is divided in half by an imaginary plane (P 1 ) indicating that the helical bristle segments ( 3 and 3 ′) will extend for half the length of the core.
  • FIG. 10B shows the imaginary line ( 1 a ) which is a helical segment whose axis is the longitudinal axis (A-A) of the core.
  • the line ( 1 a ) indicates the position of a first counter-clockwise helical bristle segment ( 3 ′).
  • FIG. 10B also shows the imaginary line ( 1 b ) of a second helical bristle segment.
  • the line ( 1 b ) indicates the position of a first clockwise helical bristle segment ( 3 ).
  • the bases of the bristles ( 3 a ) will lie on these lines.
  • each helical line ( 1 a ) or ( 1 b ) makes a 1 ⁇ 3 turn around the core, albeit, in opposite directions, and each line has the same pitch.
  • helical lines ( 1 a ) and ( 1 b ) are mirror images of each other through the imaginary plane (P 1 ).
  • FIG. 10C shows the situation when the second helical curve ( 1 b ′) makes a 1 ⁇ 4 turn around the core.
  • FIG. 10D shows bristles ( 3 a ) formed along the helical lines ( 1 a ) and ( 1 b ) of FIG. 10B .
  • FIG. 10E shows the brush head shown in FIG. 10E .
  • the number of variations in the placement of helical bristle segments ( 3 ) on a core ( 1 ) is unlimited.
  • all of the helical bristle segments in a brush head may twist in the same direction.
  • at least one bristle segment will twist clockwise and one counterclockwise.
  • the clockwise and counterclockwise bristle segments may be arranged in a number of patterns.
  • some bristle arrangements are such that all of the bristles ( 3 a ) on a proximal half of the brush head spiral in one direction (i.e. either clockwise or counter-clockwise), and all of the bristles on a distal half of the brush head spiral in the opposite direction (i.e. either counter-clockwise or clockwise, respectively; see FIGS. 1B, 2B and 6B ).
  • FIGS. 3B, 4B, 5B, 7B, 8B and 9B depict embodiments wherein a proximal and/or distal portion of the brush head supports bristles that spiral in both directions. These arrangements may be better at coating all sides of the eyelashes with sufficient quantities of makeup.
  • any helical segment ( 3 ) may be less than, equal to or greater than half of the length of the bristle envelope.
  • the “bristle envelope” is the three dimensional surface defined by the free ends of all of the bristles in the brush head.
  • the length of the bristle envelope is the distance measured along the longitudinal axis (A-A) from the most proximal to the most distal bristle in the brush head.
  • every helical segment extends no more than half of the length of the bristle envelope. For example, FIGS.
  • FIGS. 3B, 4B, 5B, 7B, 8B and 9B depict helical bristle segments that extend longitudinally for a distance equal to half of the length of the bristle envelope, while helical segments that are shorter than half the length of the bristle envelope are depicted in FIGS. 3B, 4B, 5B, 7B, 8B and 9B .
  • FIGS. 3B, 4B, 5B, 7B, 8B and 9B depict embodiments of the brush head wherein some of the helical bristle segments extend longitudinally for more than half the length of the bristle envelope.
  • the pitch of a helix is the height of one complete helix turn, measured parallel to the axis of the helix.
  • the present invention includes those arrangements wherein all of the helical segments of bristles have the same pitch, as well as those arrangements in which not all of the bristle segments have the same pitch.
  • the density of bristles can be varied along a brush head by varying the pitch of the bristle helix. For example, on a section of the core wherein the pitch is relatively greater, the bristles will be more sparse compared to a section of the core wherein the pitch is relatively smaller. The effect can be seen in FIG. 6A , wherein the bristles on the distal end of the brush head are less densely arranged due to the greater helix pitch.
  • the arrangement of helical bristles ( 3 a ) on some brush heads may be such that the proximal and distal halves of the brush head are mirror images of each other. This can happen when all of the helical segments ( 3 ) in the brush head have the same pitch and the twist of the helical segments alternates down the axis. For example, in FIGS. 1A and 2A the clockwise and counterclockwise helical segments alternate, and have the same pitch, while in FIG. 6A , the clockwise and counterclockwise helical segments alternate, but do not have the same pitch.
  • bristle arrangements included in the present invention are such that clockwise and counter-clockwise helical bristle segments are dispersed among each other along the length of the core.
  • clockwise helical bristle segments ( 3 ) may alternate with counter-clockwise helical bristle segments ( 3 ′), along the length of the core ( FIGS. 7A, 8A, 9A ).
  • every bristle belongs to either a clockwise helical segment or a counter-clockwise helical segment, but not both.
  • one or more bristles may belong to both a clockwise helical segment and a counter-clockwise helical segment.
  • No bristle belongs to two or more helical segments of the same orientation (clockwise or counter-clockwise). That is, bristle segments that twist in the same direction (clockwise or counter-clockwise) do not cross each other; preferably, they remain parallel.
  • a common example of a brush head with a spiral arrangement of bristles is the twisted wire core brush, which is made up of exactly one helical segment of bristles.
  • Preferred embodiments of the present invention are made up of 2-50 helical segments or portions thereof.
  • the brush head of FIG. 7A has 48 helical segments or parts thereof; that of FIG. 8A has 40 helical segments or parts thereof; that of FIG. 9A has 28 helical segments; that of FIGS. 1A and 6A have 12 helical segments; that of FIG. 4A has 32 helical segments; that of FIG. 2A has 20 helical segments.
  • FIGS. 7A, 8A and 9A depict brush heads with varying height bristles.
  • the brush heads described herein are molded by standard molding methods, such as injection molding in one or more plastic or elastomeric materials.
  • a rigid stem ( 2 ) for attaching to a handle can be unitarily molded with the core ( 1 ).
  • the proximal end of the core can have a hollowed out section for receiving a rigid stem element.
  • the core ( 1 ) may comprise more than one cylindrical section, i.e. the core may be bent. In that case, a number of discrete helical segments may be arranged on one or both cylindrical sections of the core. All of the features described above may be applied to each cylindrical section, individually, thus increasing the number of variations of the invention, and the utility of the brush head ( 10 ).
  • the core ( 1 ) may comprise a curved section.
  • the principles of the invention can still be applied to the curved section, by using the central longitude of the curved section as a the axis of the helical bristle segments. All of the features described above may be applicable.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Brushes (AREA)
US15/876,356 2017-01-31 2018-01-22 Molded Bristle Brushes Comprised Of Helical Segments Abandoned US20180213923A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/876,356 US20180213923A1 (en) 2017-01-31 2018-01-22 Molded Bristle Brushes Comprised Of Helical Segments

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Application Number Priority Date Filing Date Title
US201762452459P 2017-01-31 2017-01-31
US15/876,356 US20180213923A1 (en) 2017-01-31 2018-01-22 Molded Bristle Brushes Comprised Of Helical Segments

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US15/876,356 Abandoned US20180213923A1 (en) 2017-01-31 2018-01-22 Molded Bristle Brushes Comprised Of Helical Segments

Country Status (8)

Country Link
US (1) US20180213923A1 (ko)
EP (1) EP3576570A4 (ko)
JP (1) JP2020505161A (ko)
KR (1) KR20190092594A (ko)
CN (1) CN110248569A (ko)
AU (1) AU2018214541A1 (ko)
CA (1) CA3049261A1 (ko)
WO (1) WO2018144259A1 (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021087289A1 (en) * 2019-11-01 2021-05-06 Melo R&D Llc Twisted cosmetic brush
US20230148741A1 (en) * 2018-04-27 2023-05-18 Kobayashi Pharmaceutical Co., Ltd. Interdental cleaning tool
US20230263296A1 (en) * 2022-02-18 2023-08-24 Shya Hsin Packaging Industry (China) Co., Ltd. Mascara brush having tornado-shaped bristle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020073447A1 (zh) * 2018-10-12 2020-04-16 广州达宝文机电设备有限公司 一种多毛刷条螺旋卷曲毛刷辊、装置
CN108937092A (zh) * 2018-10-12 2018-12-07 广州达宝文机电设备有限公司 一种多毛刷条螺旋卷曲毛刷辊、装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080196735A1 (en) * 2007-02-21 2008-08-21 The Procter & Gamble Company Cosmetic Applicator with Torque Limiter
US20120167323A1 (en) * 2010-12-31 2012-07-05 Goody Products, Inc. Water Removing Hair Brush
US20140216497A1 (en) * 2010-06-04 2014-08-07 Zen Design Solutions Limited Cosmetic applicator
US20150110540A1 (en) * 2013-10-22 2015-04-23 Albea Services Applicator for a Cosmetic Product and Associated Applicator Assembly
WO2015083068A1 (en) * 2013-12-02 2015-06-11 L'oreal Applicator for applying a cosmetic, makeup or care, product to the eyelashes or eyebrows
US20150327655A1 (en) * 2014-05-09 2015-11-19 Aa R&D Llc Twisted cosmetic brush
WO2017212123A1 (fr) * 2016-06-08 2017-12-14 Montaigu Developpement Dispositif applicateur de produit fluide ou pateux sur des fibres keratiniques.

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EP1034722B1 (en) * 1999-03-12 2011-05-04 Avon Products, Inc. Applicator brush
CA2344203C (fr) * 1999-07-21 2005-02-15 L'oreal Dispositif pour l'application d'un produit sur les fibres keratiniques, notamment les cils ou les sourcils
US6341913B1 (en) * 2001-01-09 2002-01-29 Celeste S. Wilson-Jackson Mascara brush and storage container therefor
AU2003299964A1 (en) * 2002-12-31 2004-07-29 Avon Products, Inc. Applicator brush for a cosmetic product
FR2902984B1 (fr) * 2006-06-28 2009-03-20 Oreal Dispositif pour l'application d'un produit sur les cils ou les sourcils.
CN102088888A (zh) * 2008-05-20 2011-06-08 阿尔康包装美饰服务公司 可变节距睫毛膏刷
FR2935878A1 (fr) * 2008-09-17 2010-03-19 Bourjois Brosse pour un applicateur de mascara comprenant des dents formant des rangs transversaux.
FR2939618B1 (fr) * 2008-12-11 2011-05-20 Oreal Applicateur pour appliquer un produit cosmetique, de maquillage ou de soin, sur les matieres keratiniques
WO2011152927A1 (en) * 2010-06-04 2011-12-08 Zen Design Solutions Limited Cosmetic applicator
FR2983044B1 (fr) * 2011-11-24 2014-02-07 Chanel Parfums Beaute Applicateur pour appliquer un produit sur les cils et/ou les sourcils comprenant des poils et des dents
US20150327662A1 (en) * 2014-05-09 2015-11-19 Aa R&D Llc Twisted cosmetic brush

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080196735A1 (en) * 2007-02-21 2008-08-21 The Procter & Gamble Company Cosmetic Applicator with Torque Limiter
US20140216497A1 (en) * 2010-06-04 2014-08-07 Zen Design Solutions Limited Cosmetic applicator
US20120167323A1 (en) * 2010-12-31 2012-07-05 Goody Products, Inc. Water Removing Hair Brush
US20150110540A1 (en) * 2013-10-22 2015-04-23 Albea Services Applicator for a Cosmetic Product and Associated Applicator Assembly
WO2015083068A1 (en) * 2013-12-02 2015-06-11 L'oreal Applicator for applying a cosmetic, makeup or care, product to the eyelashes or eyebrows
US20150327655A1 (en) * 2014-05-09 2015-11-19 Aa R&D Llc Twisted cosmetic brush
WO2017212123A1 (fr) * 2016-06-08 2017-12-14 Montaigu Developpement Dispositif applicateur de produit fluide ou pateux sur des fibres keratiniques.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230148741A1 (en) * 2018-04-27 2023-05-18 Kobayashi Pharmaceutical Co., Ltd. Interdental cleaning tool
WO2021087289A1 (en) * 2019-11-01 2021-05-06 Melo R&D Llc Twisted cosmetic brush
US20230263296A1 (en) * 2022-02-18 2023-08-24 Shya Hsin Packaging Industry (China) Co., Ltd. Mascara brush having tornado-shaped bristle

Also Published As

Publication number Publication date
KR20190092594A (ko) 2019-08-07
JP2020505161A (ja) 2020-02-20
AU2018214541A1 (en) 2019-08-01
CA3049261A1 (en) 2018-08-09
WO2018144259A1 (en) 2018-08-09
EP3576570A4 (en) 2019-12-25
CN110248569A (zh) 2019-09-17
EP3576570A1 (en) 2019-12-11

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