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EP-4734790-A1 - HAIR SPLITTING NOZZLE FOR LIQUID FORMULATION DELIVERY ON SCALP

EP4734790A1EP 4734790 A1EP4734790 A1EP 4734790A1EP-4734790-A1

Abstract

An applicator (100) including at least one nozzle (115), configured to discharge one or more formulas into a surface, a first splitter (120) disposed on a first side of the at least one nozzle (115), a first plurality of pillars (130a-130e) located at an end of the first splitter (120), where the first plurality of pillars (130a-130e) are configured to group hairs on a surface into two or more bunches (755A,…755N) when the applicator (100) is moved in a first direction (D1) and where the first splitter (120) is configured to separate the two or more bunches (755A,…755N) to expose a portion of the surface in the first direction (D1).

Inventors

  • CHEN, GONG
  • PARK, WOORAM

Assignees

  • L'OREAL
  • Chen, Gong

Dates

Publication Date
20260506
Application Date
20230629

Claims (16)

  1. The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
  2. An applicator comprising: at least one nozzle, configured to discharge one or more formulas into a surface; a first splitter disposed on a first side of the at least one nozzle; a first plurality of pillars located at an end of the first splitter; and wherein the first plurality of pillars are configured to group hairs on a surface into two or more bunches when the applicator is moved in a first direction and wherein the first splitter is configured to separate the two or more bunches to expose a portion of the surface, in the first direction.
  3. The applicator of Claim 1, wherein the applicator further comprises: a second splitter disposed on a second side opposite the first side of the at least one nozzle; and a second plurality of pillars located at an end the second splitter, the second plurality of pillars are configured to group hairs on a surface into two or more bunches when the applicator is moved in a second direction, opposite the first direction, and the second splitter is configured to separate the two or more bunches to expose a portion of the surface, in the second direction.
  4. The applicator of Claim 1 of Claim 2, wherein both the first splitter and the second splitter are triangular-shaped.
  5. The applicator of any one of Claims 1-3, wherein the first splitter and the first plurality of pillars are coupled to a first structure, and the second splitter and the second plurality of pillars are coupled to a second structure.
  6. The applicator of any one of Claims 1-4, wherein the at least one nozzle is a first nozzle of a plurality of nozzles, each nozzle of the plurality of nozzles including a first splitter, a second splitter, a first plurality of pillars, and a second plurality of pillars.
  7. The applicator of Claim 5, wherein an end of each nozzle of the plurality of nozzles is configured to contact the surface.
  8. The applicator of Claim 5 or Claim 6, wherein the end of each nozzle of the plurality of nozzles are all located on a same plane.
  9. The applicator of Claim 7, wherein the first splitter and the second splitter of each nozzle of the plurality of nozzles are located on the same plane as the end of each nozzle of the plurality of nozzles.
  10. The applicator of any one of Claims 5-8, wherein each nozzle of the plurality of nozzles is angled outwards from a center of the applicator.
  11. The applicator of any one of Claims 1-9 wherein the applicator further comprises: at least one light source configured to apply light to the portion of the surface; and at least one optical sensor configured to receive light reflected off the portion of the surface.
  12. The applicator of any one of Claims 1-10, wherein the applicator further comprises: an attachment configured to couple the applicator to a body; and a formula input configured to fluidly couple to a formula reservoir.
  13. A system for discharging one or more formulas into a surface, the system comprising: an applicator according to any one of Claims 1-11; and a pressure generator configured to couple to the applicator, the pressure generator comprising: a body; and a pressure generating component configured to generate a pressure, wherein the pressure applies the one or more formulas. .
  14. The system of Claim 12, wherein the applicator further comprises: at least one light source configured to apply light to the portion of the surface; and at least one optical sensor configured to receive light reflected off the portion of the surface, wherein the pressure generating component is configured to generate the pressure each time the applicator moves across a predetermined distance interval.
  15. A method of using the system of Claim 12 or Claim 13, the method comprising: contacting the one or more nozzles to the surface; brushing the applicator across the surface; grouping hairs on the surface into two or more hair bunches with the first or second plurality of pillars; separating the two or more hair bunches with the first or the second splitter to expose a portion of the surface; and discharging one or more formulas into the exposed portion of the surface.
  16. The method of Claim 14, wherein the method further includes: emitting light from one or more light source on the exposed portion of the surface; detecting light reflected from the surface with one or more optical sensors; and discharging the one or more formulas equidistantly, each time the applicator moves across a predetermined distance interval.

Description

HAIR SPLITTING NOZZLE FOR LIQUID FORMULATION DELIVERY ON SCALP SUMMARY In one aspect, disclosed herein is an applicator including at least one nozzle, configured to discharge one or more formulas into a surface, a first splitter disposed on a first side of the at least one nozzle, a first plurality of pillars located at an end of the first splitter, where the first plurality of pillars are configured to group hairs on a surface into two or more bunches when the applicator is moved in a first direction and where the first splitter is configured to separate the two or more bunches to expose a portion of the surface in the first direction. In another aspect, described herein is an applicator including at least one nozzle, configured to discharge one or more formulas into a surface, a first splitter disposed on a first side of the at least one nozzle, a second splitter disposed on a second side opposite the first side of the at least one nozzle, a first plurality of pillars located at an end of the first splitter, and a second plurality of pillars located at an end the second splitter. The first plurality of pillars and the second plurality of pillars are configured to group hairs on a surface into two or more bunches when the applicator is moved in a first direction and a second direction, respectively, and the first splitter and the second splitter are configured to separate the two or more bunches to expose a portion of the surface, in the first direction and the second direction, respectively. In some embodiments, both the first splitter and the second splitter are triangular-shaped. In some embodiments, the first splitter and the first plurality of pillars are coupled to a first structure, and the second splitter and the second plurality of pillars are coupled to a second structure. In some embodiments, the at least one nozzle is a first nozzle of a plurality of nozzles, each nozzle of the plurality of nozzles including a first splitter, a second splitter, a first plurality of pillars, and a second plurality of pillars. In some embodiments, an end of each nozzle of the plurality of nozzles is configured to contact the surface. In some embodiments, the end of each nozzle of the plurality of nozzles are all located on a same plane. In some embodiments, the first splitter and the second splitter of each nozzle of the plurality of nozzles are located on the same plane as the end of each nozzle of the  plurality of nozzles. In some embodiments, each nozzle of the plurality of nozzles is angled outwards from a center of the applicator. In some embodiments, the applicator further includes at least one light source configured to apply light to the portion of the surface, and at least one optical sensor configured to receive light reflected off the portion of the surface. In some embodiments, the applicator further includes an attachment configured to couple the applicator to a body, and a formula input configured to fluidly couple to a formula reservoir. In another aspect, described herein is a system for discharging one or more formulas into a surface, the system including an applicator as described herein, and a pressure generator configured to couple to the applicator, the pressure generator including a body and a pressure generator components, configured to generate a pressure to apply the formula. In some embodiments, the applicator further includes at least one light source configured to apply light to the portion of the surface, and at least one optical sensor configured to receive light reflected off the portion of the surface, where the driving circuit is configured to supply and cut off the current each time the applicator moves across a predetermined distance. In some embodiments, the system further includes a formula reservoir configured to retain one or more formulas, wherein the formula reservoir is in fluid communication with at least one nozzle of the applicator. In some embodiments, the applicator is further configured to discharge the one or more formulas through the at least one nozzle. In some embodiments, the system is configured to discharge the one or more formulas at a depth of about 50-100 micrometers into the surface. In yet another aspect, described herein is a method of using the system described herein, the method including contacting the one or more nozzles to the surface, brushing the applicator across the surface, grouping hairs on the surface into two or more hair bunches with the first or second plurality of pillars, separating the two or more hair bunches with the first or the second splitter to expose a portion of the surface, and discharging one or more formulas into the exposed portion of the surface. In some embodiments, the method further includes attaching the applicator to the pressure generator. In some embodiments, the method further includes emitting light from one or more light source on the exposed portion of the surface, detecting light reflected from the su