# US 11,304,505 B2 · Brush assembly and method of manufacturing a brush > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,304,505 B2 - Document ID: US11304505B2 - Status: Granted - Kind: B2 - Application number: 16/817,973 - Filed: 2020-03-13 - Published: 2020-09-17 - Granted: 2022-04-19 - Earliest claimed: 2019-03-13 - Assignees: Sanderson-MacLeod, Inc. - Applicants: Sanderson-MacLeod, Inc. - Inventors: Mark Borsari; Chris Tarling - Web page: https://patentgrep.com/patent/US11304505B2 ## CPC - A46B 3/18: the bristles being fixed on or between belts or wires - A46B 5/0037: {Flexible resilience by plastic deformation of the material} - A45D 40/265: {connected to the cap of the container} - A46B 3/04: by mouldable materials, e.g. metals, cellulose derivatives, plastics (A46B1/00 takes precedence) - A46B 5/0095: {Removable or interchangeable brush heads} - A46B 7/044: {Sliding connections for bristle carriers} - A46B 7/08: as a rotating disc - A46B 9/021: {arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow} - A46B 9/025: {the bristles or the tufts being arranged in an angled position relative to each other} - A46B 9/026: {where the surface of the brush body or carrier is not in one plane, e.g. not flat (A46B9/005 takes precedence)} - A46B 13/003: {made up of a series of annular brush rings; Annular brush rings therefor} - A46D 1/0207: {Bristles characterised by the choice of material, e.g. metal} - A46D 3/00: Preparing, {i.e. Manufacturing} brush bodies - A46D 9/02: Cutting; Trimming - A46B 2200/1053: Cosmetics applicator specifically for mascara - A46B 2200/106: Cosmetics applicator specifically for mascara including comb like element - 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 - A46D: MANUFACTURE OF BRUSHES ## Abstract A method of manufacturing a brush includes providing a core wire section having a proximal end and a distal end, and an integral tip on the distal end, forming a bristle element having a throughbore, and inserting the core wire section into the throughbore until the bristle element is received on the core wire section. ## Claims ### Claim 1 A brush, comprising: a core section including at least two leg members twisted about one another in a helical configuration, the core section having a proximal end and a distal end, and an integral tip formed on the distal end; and a plurality of discs slidably received on the core section, the plurality of discs defining a brush head; wherein the core section further includes a plurality of fiber bristles anchored between the at least two leg members; wherein the plurality of discs are received about the plurality of fiber bristles such that the plurality of fiber bristles inhibit rotational and axial movement of the plurality of fiber bristles with respect to the core section. ### Claim 2 (depends on 1) The brush of claim 1, wherein: the integral tip forms a position stop preventing the plurality of discs from sliding off the distal end of the core section. ### Claim 3 (depends on 1) The brush of claim 1, wherein: the integral tip is generally spherical in shape. ### Claim 4 (depends on 3) The brush of claim 3, wherein: the integral tip has a diameter that is greater than a diameter of the core section. ### Claim 5 (depends on 4) The brush of claim 4, wherein: the integral tip and the core section are homogeneous. ### Claim 6 (depends on 1) The brush of claim 1, wherein: the core section is formed form a metal or metal alloy. ### Claim 7 (depends on 1) The brush of claim 1, wherein: the brush head is shaped by at least one of bending a portion of the core section and/or trimming the plurality of discs. ### Claim 8 (depends on 1) The brush of claim 1, wherein: the plurality of discs are additively manufactured or molded elements having a plurality of bristles. ### Claim 9 (depends on 1) The brush of claim 1, wherein: the brush head is shaped by bending a portion of the core section. ### Claim 10 A method of manufacturing a brush, comprising the steps of: providing a core section having a plurality of leg portions twisted in a helical configuration, a proximal end and a distal end, and an integral tip on the distal end; and positioning at least one bristle element on the core section, the at least one bristle element having a throughbore through which the core section extends; wherein the integral tip forms a position stop preventing the at least one bristle element from sliding off the distal end of the core section; wherein the at least one bristle element is a plurality of disc elements; wherein the core section includes a plurality of bristles anchored between the plurality of leg portions; and wherein the plurality of bristles inhibit axial and rotational movement of the plurality of disc elements on the core section. ### Claim 11 (depends on 10) The method according to claim 10, wherein: the at least one bristle element is additively manufactured or molded. ### Claim 12 (depends on 10) The method according to claim 10, further comprising the step of: imparting a bend or curve to the core section after positioning the at least one bristle element on the core section. ### Claim 13 (depends on 10) The method according to claim 10, further comprising the step of: trimming the at least one bristle element after positioning the at least one bristle element on the core section. ### Claim 14 A brush, comprising: a core section having a plurality of leg portions twisted in a helical configuration, and a plurality of fiber bristles anchored between the plurality of leg portions; and a plurality of disc elements received on the core section; wherein the plurality of fiber bristles are configured such that the plurality of fiber bristles interact with the plurality of disc elements to inhibit rotation of the plurality of disc elements relative to the core section. ### Claim 15 (depends on 14) The brush of claim 14, further comprising: an integral tip formed on a distal end the core section, the integral tip having a diameter that is greater than a diameter of an aperture of each of the plurality of disc elements through which the core section is received, such that the integral tip forms a position stop preventing the plurality of disc elements from sliding off the distal end of the core section.