# US 11,297,932 B2 · Device for packaging and applying a cosmetic product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,297,932 B2 - Document ID: US11297932B2 - Status: Granted - Kind: B2 - Application number: 16/077,935 - Filed: 2017-02-14 - Published: 2021-06-24 - Granted: 2022-04-12 - Earliest claimed: 2016-02-17 - Assignees: L'oreal - Applicants: L'oreal - Inventors: Alain Berhault; Chloe Cabon - Web page: https://patentgrep.com/patent/US11297932B2 ## CPC - A46B 11/0013: {dispensing by gravity or by shaking} - A45D 34/042: {using a brush or the like} - A45D 40/262: {using a brush or the like} - A46B 9/021: {arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow} - A46B 11/0072: {Details} - A45D 34/045: {connected to the cap of the container} - A45D 40/265: {connected to the cap of the container} - A46B 2200/1046: Brush used for applying cosmetics - A46B: BRUSHES (handles not integral with brushware B25G) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING ## Abstract A device for packaging and applying a cosmetic product includes a brush applicator having a tuft of bristles at one end, and a container to which the brush applicator can be fastened, comprising a container intended to contain the product to be applied and a housing for receiving at least a part of the tuft of bristles of the brush, said housing communicating with the container via at least one opening, wherein, when the brush applicator is fastened to the container, only some of the bristles of the tuft of bristles are disposed in and/or next to the opening and directly exposed to the product coming from the container. ## Claims ### Claim 1 A device for packaging and applying a cosmetic product, comprising: a brush applicator comprising a tuft of bristles at one end; and a container to which the brush applicator can be fastened, comprising an internal space intended to contain the product to be applied and a housing for receiving at least a part of the tuft of bristles of the brush applicator, said housing communicating with the internal space via at least one opening, wherein, when the brush applicator is fastened to the container, only some of the bristles of the tuft of bristles are disposed in or next to the opening and directly exposed to the product coming from the internal space, a ratio So/Sm between a section So of the opening and a maximum section Sm of the tuft of bristles when the applicator brush is fastened to the container is less than or equal to ¼. ### Claim 2 (depends on 1) The device as claimed in claim 1, wherein the tuft of bristles is engaged in the opening and closes the opening off when the applicator is fastened to the container. ### Claim 3 (depends on 1) The device as claimed in claim 1, wherein, when the brush applicator is fastened to the container, the tuft of bristles has a cross section which decreases over a distance d1, measured along a longitudinal axis of the tuft of bristles, from a point at which the section is at a maximum as far as a distal end of the tuft of bristles, the housing and the tuft of bristles being arranged such that the tuft of bristles is exposed to the product contained in the internal space, from the distal end of the tuft of bristles, over a distance d2 that is less than d1. ### Claim 4 (depends on 3) The device as claimed in claim 3, wherein d2/(d1−d2)<½. ### Claim 5 (depends on 1) The device as claimed in claim 1, wherein the container has a hollow body that is open at one end and an insert attached to this body, the insert defining said housing. ### Claim 6 (depends on 5) The device as claimed in claim 5, wherein the insert comprises a mounting skirt to which the brush applicator is fastened. ### Claim 7 (depends on 5) The device as claimed in claim 5, the device has a wall that extends at a nonzero distance from the body of the container and defines said opening. ### Claim 8 (depends on 1) The device as claimed in claim 1, wherein a tip of the tuft of bristles is engaged in the opening. ### Claim 9 (depends on 1) The device as claimed in claim 1, wherein part of the tuft of bristles passes through the opening. ### Claim 10 (depends on 1) The device as claimed in claim 1, wherein the tuft of bristles comes into contact with a wall defining the housing above the opening. ### Claim 11 (depends on 10) The device as claimed in claim 10, wherein the tuft of bristles comes into contact with the wall defining the housing over a distance greater than or equal to L/4, where L denotes the visible length of the tuft of bristles. ### Claim 12 (depends on 1) The device as claimed in claim 1, wherein the tuft of bristles is constrained radially in the housing above the opening. ### Claim 13 (depends on 1) The device as claimed in claim 1, wherein the container comprises an agitation means for the product. ### Claim 14 (depends on 1) A method for loading a brush applicator as defined in claim 1 with product, wherein the device is agitated axially with the brush applicator in position on the container so as to close the container, and then the container is held the right way up and the brush applicator is separated from the container. ### Claim 15 (depends on 14) A method for making up human keratin materials, wherein the brush applicator is loaded in accordance with the loading method defined in claim 14 and then the product is applied using a surface of the tuft of bristles that is not loaded with product to spread the product and blend the product over the zone treated.