Cosmetic applicator

Patent metadata

Field	Value
Publication number	US-11219294-B2
Application number	US-201815908224-A
Country	US
Kind code	B2
Filing date	Feb 28, 2018
Priority date	Feb 28, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

An applicator of topical formulas. The applicator includes a monolithic piece of material having two equally sized major surfaces separated by a thickness of the material, wherein each major surface has a convex surface section at a maximum that transitions to concave surfaces toward the periphery or diminishes toward the periphery, and the piece of material has a perimeter shape defined by the following: a first plane of symmetry bisecting both major surfaces into two similar halves; each half has a turning point maximum through which a second plane further divides each half into two approximate quadrants; a first approximate quadrant of each half has a concave periphery; and a second approximate quadrant of each half has a convex periphery.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. An applicator of topical formulas, comprising:
a monolithic piece of material having two equally sized major surfaces separated by a thickness of the material, wherein each major surface has a convex surface section and a concave surface section, wherein the convex surface section is at a maximum that transitions to the concave surface section toward the periphery or diminishes toward the periphery, wherein the major surfaces have matte surface texturing to provide an adhesive surface for the formulas, and the piece of material has an entire periphery edge defined by the following:
a first plane of symmetry bisecting both major surfaces into two similar halves;
each half has a turning point at a maximum through which a second plane further divides each half into two approximate quadrants;
a first approximate quadrant of each half has a concave periphery; and
a second approximate quadrant of each half has a convex periphery, wherein the entire periphery edge of the applicator is composed of the concave periphery and convex periphery of each quadrant, each major surface has a maximum that is approximately at the intersection of two opposite turning points, each major surface diminishes from the maximum at a greater rate to the convex periphery as compared to the concave periphery, and wherein the maximum of each major surface is placed more toward a convex turning point having a larger radius compared to the opposite convex turning point.

2. The applicator of claim 1 , wherein the piece of material is 100% by weight thermoplastic urethane and unavoidable impurities.

3. The applicator of claim 1 , wherein a shape in a thickness direction at an entire edge of the periphery from one major surface to the other is approximately parabolic.

4. The applicator of claim 1 , wherein a shape in a thickness direction at an entire edge of the periphery from one major surface to the other is approximately a point.

5. The applicator of claim 1 , wherein the piece of material has a durometer of 55 Shore A to 80 Shore A.

6. The applicator of claim 1 , wherein a majority of the periphery of the first approximate quadrant of each half is concave.

7. The applicator of claim 1 , wherein a majority of the periphery of the second approximate quadrant of each half is convex.

8. The applicator of claim 1 , wherein the concave and the convex periphery have a similar radius.

9. The applicator of claim 1 , wherein the concave edge and the convex periphery have a dissimilar radius.

10. The applicator of claim 1 , wherein the thickness of the piece of material decreases from a convex section to the periphery.

11. The applicator of claim 1 , wherein, when the applicator is arranged in a three-axis coordinate system, the applicator is bisected in two axes into mirror images.

12. The applicator of claim 1 , wherein, when the applicator is arranged in a three-axis coordinate system, the applicator has two opposite convex turning points in two axes.

13. The applicator of claim 12 , wherein a radius of a convex turning point is larger than a radius of the opposite convex turning point in a first axis.

14. The applicator of claim 13 , wherein a radius of a convex turning point is the same as a radius of the opposite convex turning point in a second axis.

15. The applicator of claim 14 , wherein the major surfaces are arranged with a length and width in the first and second axes.

16. The applicator of claim 15 , wherein the thickness is in the third axis.

17. The applicator of claim 15 , wherein a maximum in a third axis is placed more toward the convex turning point having the larger radius compared to the opposite convex turning point in the first axis.

18. The applicator of claim 17 , wherein the maximum in the third axis is placed in the center between the convex turning point and the opposite convex turning point having the same radius in the second axis.

19. The applicator of claim 18 , wherein the maximum in the third axis includes a convex surface section in the major surfaces.

20. A combination, comprising:
the applicator of claim 1 ; and
a formula configured for topical application on the skin.

Assignees

• Oreal

Inventors

• Chaillet-Piquand Noémie
• Bickford William

Classifications

• A45D2200/1018

  comprising a pad, i.e. a cushion-like mass of soft material, with or without gripping means · CPC title

• A45D2200/1027

  Tissues, i.e. thin applicator sheets · CPC title

• A45D40/28 Primary

  Appliances specially adapted for spreading already applied paint · CPC title

• A45D33/34

  Powder-puffs, e.g. with installed container · CPC title

• A45D37/00 Primary

  Sachet pads specially adapted for liquid toiletry or cosmetic substances · CPC title