WO2025257565A1 - Dispositif de soins capillaires - Google Patents

Dispositif de soins capillaires

Info

Publication number
WO2025257565A1
WO2025257565A1 PCT/GB2025/051301 GB2025051301W WO2025257565A1 WO 2025257565 A1 WO2025257565 A1 WO 2025257565A1 GB 2025051301 W GB2025051301 W GB 2025051301W WO 2025257565 A1 WO2025257565 A1 WO 2025257565A1
Authority
WO
WIPO (PCT)
Prior art keywords
bristles
centreline
care device
hair care
longitudinal axis
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.)
Pending
Application number
PCT/GB2025/051301
Other languages
English (en)
Inventor
James David William Miles
Timothy Hone
Stephen Anthony Sayers
Rachel KAPLAN
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.)
Tangle Teezer Ltd
Original Assignee
Tangle Teezer Ltd
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
Priority claimed from GBGB2408419.6A external-priority patent/GB202408419D0/en
Application filed by Tangle Teezer Ltd filed Critical Tangle Teezer Ltd
Publication of WO2025257565A1 publication Critical patent/WO2025257565A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A46B9/028—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

Definitions

  • the present invention relates to a hair care device.
  • the invention relates to a hair care device that is well suited to detangling bleached and/or damaged hair.
  • Hair care devices such as brushes, for detangling hair have been known for some time.
  • One very successful hairbrush for detangling hair is described in GB2447692B assigned to Tangle Teezer Limited.
  • This brush has two heights of bristles interspersed across the surface of the brush, the bristles are tapered and made from flexible plastic material, such as Hytrel ® and the long bristles bend at approximately the height of the shorter bristles, so as to achieve a differential brushing action.
  • the longer bristles bend sideways initially whereupon the shorter bristles come into more intimate contact with the hair.
  • the longer bristles have flexed and bent and are no longer capable of picking up any more hair, it is then that the shorter bristles start to catch further strands of hair. This gives two independent actions to detangle the hair that are both working at the same time.
  • a hair care device such as a hairbrush, or brush portion of a hair dryer.
  • the hair care device may comprise a body portion and projecting therefrom an array of flexible bristles.
  • the bristles may have at least two different lengths.
  • the hair care device or the array may have a longitudinal axis/centreline.
  • Bristles may be arranged in arcing lines.
  • the arcing lines of bristles may arc away from the longitudinal axis/centreline.
  • the arcing lines of bristles may arc towards the lateral edges of the array /hair care device.
  • Bristles closer to the longitudinal axis/centreline may have a smaller distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle. Bristles closer to the longitudinal axis/centreline may have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles closer to the longitudinal axis/centreline have a smaller distance and/or a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device having a centreline; wherein bristles closer to the centreline have a smaller distance to their nearest adjacent bristle than bristles further from the centreline have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a longitudinal axis; wherein bristles closer to the longitudinal axis have a smaller distance to their nearest adjacent bristle than bristles further from the longitudinal axis have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a centreline; wherein bristles closer to the centreline have a smaller distance to their nearest adjacent bristle than bristles further from the centreline have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles closer to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • the density of the bristles is greater closer to the longitudinal axis than the density of the bristles further (laterally) from the longitudinal axis (towards the lateral edges of the array /hair care device).
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device having a longitudinal axis; wherein bristles closer to the longitudinal axis have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device having a centreline; wherein bristles closer to the centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the centreline have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a longitudinal axis; wherein bristles closer to the longitudinal axis have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis have to their nearest adjacent bristle.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a centreline; wherein bristles closer to the centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the centreline have to their nearest adjacent bristle.
  • the longitudinal axis of the array will be the same as the longitudinal axis of the hair care device, and will run along the same line as centreline of the array and the hair care device.
  • the bristles of the first aspect of the invention may be arranged in lines (optionally arcing lines) each extending from the longitudinal axis/centreline towards a lateral edge of the array/hair care device.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis/centreline towards a lateral edge of the array/hair care device.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device having a longitudinal axis; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis towards a lateral edge of hair care device.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device having a centreline; wherein bristles are arranged in arcing lines arcing away from the centreline towards a lateral edge of hair care device.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a longitudinal axis; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis towards a lateral edge of the array.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the array having a centreline; wherein bristles are arranged in arcing lines arcing away from the centreline towards a lateral edge of the array.
  • the provision of arcing rows avoids the in-line conformity of the bristles, as seen in the rows of GB2447692B, which means that even with relatively few bristles, or a lower density of bristles, hair passing through the array is likely to interact with bristles of both lengths, regardless of the angle at which the brush is used.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis/centreline towards a lateral edge of the array /hair care device and wherein bristles closer to the longitudinal axis/centreline have a smaller distance and/or a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • the bristles may be tapered. Longer bristles may be more tapered than shorter bristles, i.e. the average angle of taper of the longer bristles may be more than that of the shorter bristles. For example, opposing sides of the shorter bristles may taper at about 2 degrees towards one another.
  • the longer bristles may have a different taper structure from the shorter bristles, e.g. the taper of the shorter bristles may be substantially uniform and the taper of the longer bristles may not be uniform. For example, opposing sides of the lower part (e.g. the lower third, or lower 7/18) of the longer bristles may taper more than the upper part (e.g. the upper third, upper half or upper 11/18).
  • opposing sides of the lower part of the longer bristles may taper at about 4 to 5 degrees (e.g. 4.4 degrees) whilst opposing sides of the upper part may taper at about 2 degrees towards one another.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles closer to the longitudinal axis/centreline have a smaller distance and/or a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle; and, wherein the bristles are tapered.
  • One embodiment of the present invention provides a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis/centreline towards a lateral edge of the array /hair care device; and, wherein the bristles are tapered.
  • the lateral cross section of the bristles may be circular.
  • Chamfers may be provided at the base of the bristles.
  • the bristles may be formed of a resiliently flexible material, e.g. a resiliently flexible plastics material. That is to say, all of the defined bristles may be resiliently flexible plastic bristles. In one embodiment all bristles of the brush may be formed of a resiliently flexible material, e.g. a resiliently flexible plastics material and thus all of the bristles of the brush may be resiliently flexible plastic bristles.
  • one embodiment of the present invention provides a hair care device comprising a body portion and projecting therefrom an array of resiliently flexible plastic bristles; the resiliently flexible plastic bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein resiliently flexible plastic bristles closer to the longitudinal axis/centreline have a smaller distance and/or a smaller lateral component of the distance to their nearest adjacent resiliently flexible plastic bristle than resiliently flexible plastic bristles further from the longitudinal axis/centreline have to their nearest adjacent resiliently flexible plastic bristle.
  • the bristles may have only two different lengths.
  • the shorter bristles may be between 1/3 and 2/3 the height of the longer bristles, preferably about half the height of the longer bristles.
  • the point of bend of the longer bristles (i.e. the height of the tip of the bristles when the bristles are bent sideways) may be approximately the height of the shorter bristles.
  • the long bristles may have a height of between 16 and 20mm, e.g. 17 to 19mm, such as 18mm.
  • the short bristles may have a height of between 7 and 11 mm, e.g. 8- 10mm, such as 9mm.
  • At least some or all of the shorter bristles may not be centrally disposed between four long bristles. At least some or all of the shorter bristles may not be offset with respect to longer bristles. This contrasts with the disclosure of GB2447692B, where shorter bristles are deliberately offset with respect to long bristles. At least some, or all, of the shorter bristles may be arranged in-line with long bristles. In particular, at least some, or all, of the shorter bristles may be arranged in-line with long bristles when viewed parallel to the longitudinal axis/centreline of the array/hair care device.
  • this arrangement can improve the prospect of hair interacting with both long and short bristles, even when bristles are arranged at a lower density, to maintain the beneficial detangling action of two tiers of bristles whilst detangling more gently on account of the reduced density.
  • the hair care device may have a handle.
  • the hair care device may have a tip, which is distal from the handle.
  • the longitudinal axis/centreline of the hair care device may extend from the handle to the tip.
  • the longitudinal axis/centreline of the array of bristles may also extend from the handle to the tip.
  • the arcing lines of bristles may arc upwards and outwards, extending from the longitudinal axis/centreline towards the tip and towards the lateral edges.
  • the arcing lines of bristles may arc convexly upwards and outwards, that is to say, bristles (in an arcing line) closer to the longitudinal axis/centreline may arc more upwards than bristles (in an arcing line) further outwards, towards the lateral edges.
  • the array of bristles may be symmetrical about the longitudinal axis/centreline.
  • the array of bristles may include lines (e.g. arcing lines) of bristles on either side of the longitudinal axis/centreline.
  • lines e.g. arcing lines
  • v-shaped lines may be provided.
  • the apex of the v-shape may be aligned with the longitudinal axis/centreline.
  • the apex of each v-shaped line may be closer to the handle than the other bristles in each line.
  • the array of bristles may include alternating (e.g. arcing and/or v-shaped) lines consisting of (or mainly including) short bristles and (e.g. arcing and/or v-shaped) lines consisting of (or mainly including) long bristles.
  • bristles closer to the longitudinal axis/centreline may have a smaller distance and/or a smaller lateral component of the distance their nearest neighbour than bristles further from the longitudinal axis/centreline.
  • each bristle closer to the longitudinal axis/centreline may have a smaller distance and/or a smaller lateral component of the distance to its nearest neighbour than the adjacent bristle further from the longitudinal axis/centreline has to its nearest (other) neighbour. That is to say, the distance between bristles and/or the lateral component of the distance between bristles in one or more or each (e.g. arcing and/or a v-shaped) line may increase (e.g. incrementally) from the longitudinal axis/centreline towards an edge of the array /hair care device.
  • the distance and/or the lateral component of the distance from a first bristle (closest to, or on, the longitudinal axis/centreline) to a second (i.e. next) bristle in the line may be less than the distance and/or the lateral component of the distance from the second bristle to a third (i.e. next) bristle in the line; and/or be less than the distance and/or the lateral component of the distance from the third bristle to a fourth (i.e. next) bristle in the line; and/or be less than the distance and/or the lateral component of the distance from the fourth bristle to a fifth (i.e. next) bristle in the line
  • a bristle may be provided on the longitudinal axis/centreline of the array /hair care device.
  • a row of alternating long and short bristles may be provided along the longitudinal axis/centreline of the array /hair care device.
  • Lines of bristles (preferably arcing lines that arc away from the longitudinal axis/centreline and/or v-shaped lines) may extend laterally either side of the row of bristles on the longitudinal axis/centreline.
  • Lines of bristles (preferably arcing lines that arc away from the longitudinal axis/centreline and/or v-shaped lines) extending laterally from each bristle in the longitudinal axis/centreline, may be the same height as the respective bristle in the longitudinal axis/centreline.
  • the hair care device may comprise at least 5, at least 6, at least 7, at least 8, at least 9 or at least 10 lines (preferably arcing lines that arc away from the longitudinal axis/centreline) of bristles extending from the longitudinal axis/centreline.
  • the hair care device may comprise no more than 20, no more than 18, no more than 15, no more than 12 or no more than 10 lines (preferably arcing lines that arc away from the longitudinal axis/centreline) of bristles extending from the longitudinal axis/centreline.
  • the hair care device comprises at least 5, at least 6, at least 7, at least 8, at least 9 or at least 10 lines (preferably arcing lines that arc away from the longitudinal axis/centreline) extending on either side of the longitudinal axis/centreline (preferably forming v-shaped lines).
  • the hair care device comprises no more than 20, no more than 18, no more than 15, no more than 12 or no more than 12 lines (preferably arcing lines that arc away from the longitudinal axis/centreline) extending on either side of the longitudinal axis/centreline (preferably forming v-shaped lines).
  • the hair care device may comprise at least 2, at least 3, at least 4, or at least 5 lines (preferably arcing lines) of short bristles extending from the longitudinal axis/centreline.
  • the hair care device may comprise at least 2, at least 3, at least 4, or at least 5 lines (preferably arcing lines) of long bristles extending from the longitudinal axis/centreline.
  • the hair care device comprises at least 2, at least 3, at least 4, or at least 5 lines (preferably arcing lines) of long bristles and at least 2, at least 3, at least 4, or at least 5 lines (preferably arcing lines) of short bristles extending on either side of the longitudinal axis/centreline (preferably forming v-shaped lines).
  • the hair care device may comprise no more than 10, no more than 9, no more than 8, no more than 7, no more than 6 or no more than 5 lines (preferably arcing lines) of short bristles extending from the longitudinal axis/centreline.
  • the hair care device may comprise no more than 10, no more than 9, no more than 8, no more than 7, no more than 6 or no more than 5 lines (preferably arcing lines) of long bristles extending from the longitudinal axis/centreline.
  • the average spacing between short bristles in a line may be smaller than the average spacing between long bristles in a line.
  • the hair care device comprises no more than 300, no more than 200, no more than 150, or no more than 100 bristles, for example between 50 and 150 bristles, between 75 and 125 bristles, or between 90 and 110 bristles.
  • the overall density of bristles in the array is no more than 6 bristles per cm 2 ; no more than 5 bristles per cm 2 ; no more than 4 bristles per cm 2 ; no more than 3 bristles per cm 2 ; or no more than 2 bristles per cm 2 .
  • the density of bristles is at least 3 bristles per cm 2 ; at least 4 bristles per cm 2 ; or at least 5 bristles per cm 2 .
  • At least 60%, 70%, 80%, or 90% of bristles closer to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than 60%, 70%, 80%, or 90% of bristles further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • Most preferably all bristles closest to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than all the bristles furthest from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • At least 60%, 70%, 80%, or 90% of bristles closer to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • Most preferably all bristles closest to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles furthest from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • the bristles are arranged in rows (preferably arcing rows) and a majority (i.e. at least half) of the bristles closer to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles in the same row further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row. More preferably at least 60%, 70%, 80%, or 90% of bristles closer to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles in the same row further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row.
  • bristles closest to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles in the same row furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row.
  • the bristles are arranged in rows (preferably arcing rows) and a majority (i.e. at least half) of the bristles closer to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles in the same row further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row. More preferably at least 60%, 70%, 80%, or 90% of bristles closer to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles in the same row further/furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row.
  • bristles closest to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles in the same row furthest from the longitudinal axis/centreline have to their nearest adjacent bristle in the same row.
  • a method of brushing hair using a hair care device comprising applying the hair care device to the head and applying gentle pressure towards the head; whereby the longer bristles bend sideways initially whereupon the shorter bristles come into more intimate contact with the hair; preferably wherein when the longer bristles have flexed and bent and are no longer capable of picking up any more hair the shorter bristles start to catch further strands of hair.
  • a distance between bristles which are not arranged at the same longitudinal position on the hair care device can be split into a longitudinal component and a lateral component; the longitudinal component is the difference between their longitudinal positions on the hair care device, and the lateral component is the difference between their lateral positions on the hair care device.
  • measurements can be made; or where two distances are known (e.g. the total distance and one of the lateral/longitudinal components) Pythagoras’ theorem can be used; or where a distance and an angle are known, trigonometry can be used.
  • Figure 1 shows a plan view of a hair care device according to the present invention
  • Figure 2 shows a side view of a similar hair care device to that of figure 1 ;
  • Figure 3 shows a plan view of the hair care device of figure 2;
  • Figure 4 shows a cross section through the hair care device along line A-A shown in figure 3;
  • Figure 5 shows a perspective view of the hair care device of figures 2 to 4;
  • Figure 6 shows an enlarged plan view part of the hair care device of figures 2-5 ;
  • FIGS 7a-7m show side views of the hair care device of figures 2-5 at various angles.
  • Figure 8 shows an enlarged part of the plan view of a modified version of the hair care device of figure 1.
  • the hair care device 1 is a hairbrush with a body portion which includes a handle 2 and a head 3, from which a plurality of substantially parallel resiliency flexible bristles extend. At the opposite end of the head from the handle, is the tip of the hair care device 1 , and a longitudinal axis (X-X, see fig 3) of the hairbrush extends from the tip of the head to the opposite tip of the handle. This longitudinal axis extends along the centreline of the brush, and the brush is symmetrical about the centreline.
  • the bristles may be formed from a suitable grade of Hytrel ® for example, but those skilled in the art will easily determine suitable alternative plastics materials; for example elastomers include those sold under the trademark Bexloy by Celanese. Grades of Bexloy such as Bexloy GPV45B5, GPV55B5, NC010, GPV63B5 NC010 and Bexloy GPV72B5 NC010; elastomers sold under the trade marks Pebax and Rnew by Arkema, such as Pebax Rnew 55r53sp01, Pebax Rnew 63r53sp01 and Pebax Rnew 72r53sp01; or elastomers sold under the trade mark Triel by Samyang Corporation, such as Triel 5550 NA, Triel 5590 NA and Triel 5720 NA.
  • the bristles can be formed as part of a bristle pad, which is attached to the head 3 of the brush, or can be formed integral
  • the bristles are made up of two different types, longer bristles 4, and shorter bristles 5, best seen in figure 4.
  • the longer bristles 4 are also thicker at their base and can therefore be identified in the plan view images as they are bigger than the short bristles 5.
  • the bristles are formed in an array, which shares its longitudinal axis with the longitudinal axis X of the brush and likewise has a centreline corresponding to the longitudinal axis, about which the array is symmetrical.
  • the bristles, 4, 5 are arranged in the array in lines, specifically arcing lines.
  • the arcing lines of bristles 4, 5 arc away from the longitudinal axis/centreline towards the lateral edges of the array/hair care device 1.
  • Bristles 4, 5 closer to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • the density of the bristles 4, 5 is greater closer to the longitudinal axis X than the density of the bristles 4, 5 further (laterally) from the longitudinal axis X (towards the lateral edges of the array/hair care device).
  • This arrangement in which the density of the bristles 4, 5 (i.e. the number of bristles over a given area of bristles) is greater closer to the longitudinal axis/centreline than the density of the bristles further from the longitudinal axis/centreline (i.e. laterally away from the longitudinal axis/centreline), supports gentler detangling.
  • the arrangement in arcing lines also supports a more gentle detangling action.
  • the bristles 4, 5 are tapered. Longer bristles 4 are more tapered than shorter bristles 5, i.e. the average angle of taper of the longer bristles is more than that of the shorter bristles.
  • opposing sides of the shorter bristles 5 taper at about 2 degrees towards one another, whilst the longer bristles 4 have a different taper structure from the shorter bristles 5, in particular, the taper of the shorter bristles 5 is substantially uniform whereas the taper of the longer bristles 4 is not, and in this embodiment opposing sides of the lower part (e.g. lower 7/18) of the longer bristles tapers more than the upper part (in particular the upper 11/18). Specifically, opposing sides of the lower part of the longer bristles taper at about 4.4 degrees whilst opposing sides of the upper part taper at about 2 degrees towards one another.
  • the lateral cross section of the bristles 4, 5 are circular and chamfers are provided at the base of the bristles, for strength.
  • the bristles 4, 5 in this embodiment have only two different lengths, although it is envisaged that additional bristles of different length might not be significantly detrimental to performance.
  • the shorter bristles 5 are 9mm tall, and half the height of the longer bristles 4, which are 18mm tall.
  • the point of bend of the longer bristles 4 i.e. the height of the tip of the bristles when the bristles are bent sideways
  • alternative heights of bristle may also be effective.
  • each of these embodiments includes a central row, or spine, of bristles which alternate between short and long bristles.
  • the bristle closest to the handle 2 is a short bristle 5 and therefore the bristle closest to the distal tip of the head is a long bristle 4.
  • the majority of the bristles 4, 5 in the central row/spine provide a common origin for a row which arcs to the left and a row which arcs to the right.
  • the exceptions are the short bristle 5 nearest the distal tip of the head in the embodiment of figure 1 (and the embodiment of figure 8) and the long bristle 4 nearest to the distal tip of the head 3 in the embodiment of figures 2-6. These bristles do not form part of lines which arc away from the centreline.
  • the short bristle closest to the handle is the origin of a row of four short bristles 5 arcing upward and outward to the right and four bristles arcing upward and outward to the left.
  • the distance from the short bristle 5 closest to the handle to its nearest neighbour in each arcing row is equal to the distance between the other adjacent short bristles in the row.
  • the distance between the short bristle 5 in the spine and its nearest neighbour on each side may be 6.5mm, and the distance between the other bristles in those arcing lines and their nearest neighbours (other than that in the spine) may also be 6.5mm.
  • the lateral component of the distance between the first bristle (on the spine) and the second is of course less than the lateral component of the distance between the second bristle and the third bristle.
  • the lateral component of the distance between the second and third bristles is less than that between the third and fourth bristles.
  • the long bristle 4 closest to the handle is the origin of a row of four long bristles 4 arcing upward and outward to the right and four bristles arcing upward and outward to the left.
  • the distance from the long bristle 4 closest to the handle to its nearest neighbour in each arcing row is less than the distance between the other adjacent long bristles.
  • the distance between the long bristle 4 in the spine and its nearest neighbour on each side may be 8.0mm, whilst the distance between the other bristles in those arcing lines and their nearest neighbours (other than that in the spine) may be larger, e.g. 8.7mm from the second bristle 4 in the line to the third, and 8.7mm from the third to the (outermost) fourth bristle.
  • alternating longer bristles 4 and shorter bristles 5 in the spine act as the origin for arcing lines to the left and right of five bristles each (a total of nine bristles across the brush as the bristles in the spine serve as origin for two lines of five, i.e. the central and four other bristles make up each arcing line, on each of the left and right sides).
  • the rows of five bristles arc upward and outward to the right to the left respectively.
  • the distance from the origin bristle to its nearest neighbour in each arcing row i.e. to the second bristle in each arcing row
  • the distance between the other adjacent bristles i.e. the second, third, fourth and fifth bristles in the arcing rows.
  • each origin short bristle in the spine and its nearest neighbour on each side may be 6.0, whilst the distance between the other short bristles in those arcing lines and their nearest neighbours (other than that in the spine) may be between about 7.5mm and 8.5mm, generally being approximately equal as between the second and third bristle, the third to the fourth bristle and the fourth to the fifth (outermost) bristle.
  • the density of bristles is highest closest to the central longitudinal axis and lowest towards the edges.
  • the row of long bristles and the row of short bristles closest to the tip of the head where the bristles in the spine act as an origin for a line of five bristles to the left and right are an exception from the rule, and for the short bristles, the distance from the bristle at the origin to the second bristle is 6.0mm, the second to the third is 6.1mm; the third to the fourth is 6.1mm, but the fourth to the fifth is 6.0mm moreover, the distance from the origin long bristle in to its nearest neighbour, the second bristle is 7.5mm, whilst the distance from second to third, third to fourth and fourth to fifth are all 7.3mm. This is primarily to accommodate the aesthetics of the shape of the head, which narrows slightly towards the tip.
  • the lateral component of the distance between the origin (first) bristle and its nearest neighbour, the second bristle is greater than the lateral component of the distance between the second and the third bristles.
  • the angles between the bristles are such that the lateral component (a) of the 7.5mm distance between the first and second bristles is 4.9mm, whilst the lateral component (b) of the 7.3mm distance between the second and third bristles in the row is 5.9mm.
  • the longitudinal component of the distance between the first and second bristles is commensurately greater than the longitudinal component of the distance between the second and third bristles, as can be established using Pythagoras’ theorem.
  • the lateral component of the distance between the origin (first) bristle and its nearest neighbour, the second bristle is substantially greater than the lateral component of the distance between the second and the third bristles.
  • the angles between the bristles are such that the lateral component (c) of the 6.0mm distance between the first and second bristles is 3.9mm, whilst the lateral component (d) of the 6.1mm distance between the second and third bristles in the row is 4.6mm.
  • the modification of figure 8 shows an arrangement in which the arcing line of five short bristles closest to the distal tip of the head 3 has a distance of 6.0mm from the origin bristle in the spine to its nearest neighbour and a distance of 7.0mm between each of the other four bristles in the arcing line.
  • the adjacent line of five bristles which are long bristles 4 are arranged with a distance of 7.0mm from the origin bristle in the spine to its nearest neighbour (i.e. the second bristle); 7.5mm from the second bristle to the third bristle; 8.3mm between the third and fourth bristles in the arcing line and 8.3mm between the fourth and (outermost) fifth bristles in the arcing line.
  • next line (in the direction of the handle) contains six short bristles 5, arranged with a distance of 6.0mm from the origin bristle in the spine to its nearest neighbour (i.e. the second bristle); and 6.5mm between each of the second and third, third and fourth, fourth and fifth, and fifth and (outmost) sixth short bristles 5 in the arcing line.
  • next line (in the direction of the handle) in the modification of figure 8 reverts to five longer bristles 4, and an incremental increase as between the origin bristle and second bristle (7.0mm), second and third bristle (7.5mm) and third and fourth bristle (9.1mm), with the distance between the third and fourth bristle being repeated as between the fourth and fifth bristles (9.1mm).
  • certain additional bristles are included partly for aesthetic reasons and to maintain bristle density at the close to the longitudinal axis/centreline along the entire length of the array.
  • three long bristles 4 are arranged in a triangular fashion.
  • a long bristle 4 serves as the origin for lines of three long bristles to the left and right (i.e. two additional long bristles to the left and two additional long bristles to the right), and a final short bristle 5 is provided closest to the tip, not forming part of any arcing line.
  • This arrangement is notable in that instead of having the rows of shorter and longer bristles being offset, with shorter bristles centrally disposed between four long bristles as in GB2447692B, at least some of the shorter bristles are actually arranged in-line with long bristles when viewed parallel to the longitudinal axis/centreline of the array/hair care device. Notably, however, alternation remains when viewed perpendicular to the longitudinal axis. As such, when the brush is pulled through the hair (in a direction roughly perpendicular to the longitudinal axis), the long bristles 4 should not obscure the short bristles 5 and prevent them from interacting with the hair.
  • figure 7a shows a left hand side view of the brush 1 perpendicular to the longitudinal axis
  • figure 7b shows the brush turned 15 degrees clockwise with respect to figure 7a
  • figure 7c shows the brush turned 30 degrees clockwise with respect to figure 7a
  • figure 7d shows the brush turned 45 degrees clockwise with respect to figure 7a
  • figure 7e shows the brush turned 60 degrees clockwise with respect to figure 7a
  • figure 7f shows the brush turned 75 degrees clockwise with respect to figure 7a
  • figure 7g shows the brush turned 90 degrees clockwise with respect to figure 7a
  • figure 7h shows the brush turned 15 degrees anticlockwise with respect to figure 7a
  • figure 7i shows the brush turned 30 degrees anticlockwise with respect to figure 7a
  • figure 7j shows the brush turned 45 degrees anticlockwise with respect to figure 7 a
  • figure 7k shows the brush turned 60 degrees anticlockwise with respect to figure 7a
  • figure 71 shows the brush turned 75 degrees anticlockwise with respect to figure 7a
  • figure 7m shows the brush turned 90 degrees anticlockwise with
  • this arrangement of arcing lines, alternating between short and long bristles means that each strand of hair through which the brush is pulled, has a high prospect of interacting with both long and short bristles, regardless of the angle at which it is pulled through the hair and despite the lower density of bristles.
  • the beneficial detangling action of two tiers of bristles can be maintained whilst detangling more gently on account of the reduced density.
  • the arcing lines of bristles arc convexly upwards and outwards, extending from the centreline towards the tip and towards the lateral edges. That is to say, bristles (in an arcing line) closer to the centreline may arc more upwards than bristles (in an arcing line) further outwards, towards the lateral edges.
  • the array of bristles is symmetrical about the longitudinal axis/centreline and a row of bristles extends along the centreline.
  • the array of bristles may include lines (e.g. arcing lines) of bristles on either side of the longitudinal axis/centreline, but no bristles along the centreline itself.
  • the brush 1 of the embodiment of figures 2-6 has a total of 52 short bristles and 46 long bristles, i.e. a total of less than 100 bristles over the entire area of the array, which is an area of roughly 100mm x 50mm (i.e. 50cm 2 ), or approximately 2 bristles per square cm.
  • the applicant currently sells a hairbrush under the trade mark The Ultimate Detangler, Fine & Fragile with the same size and shape of body and array, but the arrangement as described in GB2447692B. That has 214 short bristles and 155 long bristles, i.e. a total of 369 bristles over the same area of around 50cm 2 , i.e.
  • a hair care device comprising a body portion and projecting therefrom an array of flexible bristles; the bristles having at least two different lengths; the hair care device or the array having a longitudinal axis/centreline; wherein bristles are arranged in arcing lines arcing away from the longitudinal axis/centreline towards a lateral edge of the array /hair care device.
  • a hair care device wherein the longer bristles have a different taper structure from the shorter bristles, wherein the taper of the shorter bristles is substantially uniform and the taper of the longer bristles is not uniform, but opposing sides of the lower third of the longer bristles taper more than the upper half.
  • the bristles ae formed of a resiliently flexible plastics material.
  • the bristles have only two different lengths; wherein the shorter bristles are about half the height of the longer bristles; and wherein the point of bend of the longer bristles is approximately the height of the shorter bristles.
  • a hair care device wherein the long bristles have a height of between 16 and 20mm and the short bristles have a height of between 7 and 11 mm.
  • a hair care device wherein at least some or all of the shorter bristles are not centrally disposed between four long bristles and at least some, or all, of the shorter bristles are arranged in-line with long bristles when viewed parallel to the longitudinal axis/centreline of the array /hair care device.
  • a hair care device according to any preceding clause wherein the hair care device has a handle and a tip, which is distal from the handle; wherein the longitudinal axis/centreline of the hair care device extends from the handle to the tip; and wherein the arcing lines of bristles arc convexly upwards and outwards, extending from the centreline towards the tip and towards the lateral edges.
  • a hair care device wherein the array of bristles is symmetrical about the longitudinal axis/centreline and includes lines of bristles on either side of the longitudinal axis/centreline, such that generally v-shaped lines are provided; wherein the apex of the v-shape is aligned with the longitudinal axis/centreline.
  • a hair care device including arcing v-shaped alternating lines consisting of short bristles and arcing v-shaped lines consisting of long bristles.
  • a hair care device wherein bristles closer to the longitudinal axis/centreline have a smaller distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • a hair care device wherein bristles closer to the longitudinal axis/centreline have a smaller lateral component of the distance to their nearest adjacent bristle than bristles further from the longitudinal axis/centreline have to their nearest adjacent bristle.
  • a hair care device 9 or 10 wherein in one or more or each line, bristles closer to the centreline are closer to their nearest neighbour than bristles further from the centreline.
  • a hair care device wherein in one or more or each line, each bristle closer to the centreline is closer to its nearest neighbour than the adjacent bristle further from the centreline is to its nearest other neighbour.
  • a hair care device according to any preceding clause wherein a row of alternating long and short bristles is provided along the centreline of the array /hair care device.
  • a hair care device according to clause 15 wherein lines of bristles extend laterally either side of the row of bristles on the centreline.
  • a hair care device according to clause 16 wherein lines of bristles extending laterally from each bristle in the centreline, are the same height as the respective bristle in the centreline.
  • a hair care device comprising at least 10 lines of bristles extending from the centreline.
  • a hair care device according to clause 18 comprising at least 10 lines of bristles extending on either side of the centreline thereby forming v-shaped lines.
  • a hair care device comprising at least 5 lines of short bristles extending from the centreline and at least 5 lines of long bristles extending from the centreline.
  • a hair care device which comprises no more than 100 bristles.
  • a hair care device wherein the overall density of bristles in the array is no more than 3 bristles per cm 2 .
  • a hair care device wherein in a region around the longitudinal axis/centreline of the hair care device, the density of bristles is at least 4 bristles per cm 2 .
  • a method of brushing hair using a hair care device according to any preceding clause; the method comprising applying the hair care device to the head and applying gentle pressure towards the head; whereby the longer bristles bend sideways initially whereupon the shorter bristles come into more intimate contact with the hair; preferably wherein when the longer bristles have flexed and bent and are no longer capable of picking up any more hair the shorter bristles start to catch further strands of hair.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Brushes (AREA)

Abstract

L'invention divulgue un dispositif de soins capillaires comprenant une partie corps et un réseau de poils souples faisant saillie à partir de celle-ci. Les poils ont au moins deux longueurs différentes et le dispositif de soins capillaires ou le réseau présente un axe longitudinal/une ligne centrale. Les poils plus proches de l'axe longitudinal/la ligne centrale présentent une distance inférieure et/ou une composante latérale de la distance inférieure jusqu'au poil adjacent le plus proche que les poils plus éloignés de l'axe longitudinal/la ligne centrale jusqu'au poil adjacent le plus proche. L'invention divulgue également un procédé de brossage des cheveux à l'aide du dispositif de soins capillaires.
PCT/GB2025/051301 2024-06-12 2025-06-12 Dispositif de soins capillaires Pending WO2025257565A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GBGB2408419.6A GB202408419D0 (en) 2024-06-12 2024-06-12 Hair care device
GB2408419.6 2024-06-12
GB2413365.4 2024-09-11
GB2413360.5 2024-09-11
GB2413365.4A GB2641842A (en) 2024-06-12 2024-09-11 Hair care device
GB2413360.5A GB2641841A (en) 2024-06-12 2024-09-11 Hair care device

Publications (1)

Publication Number Publication Date
WO2025257565A1 true WO2025257565A1 (fr) 2025-12-18

Family

ID=96171437

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/GB2025/051301 Pending WO2025257565A1 (fr) 2024-06-12 2025-06-12 Dispositif de soins capillaires
PCT/GB2025/051300 Pending WO2025257564A1 (fr) 2024-06-12 2025-06-12 Dispositif de soins capillaires

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/GB2025/051300 Pending WO2025257564A1 (fr) 2024-06-12 2025-06-12 Dispositif de soins capillaires

Country Status (1)

Country Link
WO (2) WO2025257565A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007329A6 (nl) * 1993-07-15 1995-05-16 Borstelfabrieken Dilecta Jos D Verbeterde haarborstel.
GB2447692B (en) 2007-03-23 2012-03-07 Shaun Pulfrey Hair care device
CA2926479A1 (fr) * 2015-04-14 2016-10-14 Goody Products, Inc. Brosse a cheveux eliminant l'eau
GB2549765A (en) * 2016-04-28 2017-11-01 Tangle Teezer Ltd Hair brush for hair with extensions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007329A6 (nl) * 1993-07-15 1995-05-16 Borstelfabrieken Dilecta Jos D Verbeterde haarborstel.
GB2447692B (en) 2007-03-23 2012-03-07 Shaun Pulfrey Hair care device
CA2926479A1 (fr) * 2015-04-14 2016-10-14 Goody Products, Inc. Brosse a cheveux eliminant l'eau
GB2549765A (en) * 2016-04-28 2017-11-01 Tangle Teezer Ltd Hair brush for hair with extensions

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