# US 11,998,098 B2 · Hair dryer attachment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,098 B2 - Document ID: US11998098B2 - Status: Granted - Kind: B2 - Application number: 17/139,548 - Filed: 2020-12-31 - Published: 2022-06-30 - Granted: 2024-06-04 - Earliest claimed: 2020-12-31 - Assignees: SharkNinja Operating LLC - Applicants: SharkNinja Operating LLC - Inventors: Joshua Thomas Richards; Thomas Edward Kingsborough Cody; Steven Luke Bailey; Shannon Marie McSweeney; Daniel John Innes - Web page: https://patentgrep.com/patent/US11998098B2 ## CPC - A45D 20/124: {comprising rotating elements} - A45D 20/12: Details thereof or accessories therefor, e.g. nozzles, stands - A45D 20/122: {Diffusers, e.g. for variable air flow} - A45D 20/52: Hair-drying combs or hair-drying brushes, adapted for heating by an external heating source {, e.g. air stream} - A46B 9/023: {arranged like in hair brushes, e.g. hair treatment, dyeing, streaking} - A46B 9/028: {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} - A46B 15/0055: {Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors} - F26B 3/06: the gas or vapour flowing through the materials or objects to be dried (F26B3/14 takes precedence) - A46B 2200/104: Hair brush - 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 - A46B: BRUSHES (handles not integral with brushware B25G) - F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27) ## Abstract An attachment for a hair dryer that is movable between a first position and a second position in order to alter one or more characteristics of the airflow therethrough. In one embodiment, an attachment having multiple facets and types of projections with varying stiffness are provided on an outer housing that can be rotated relative to a base by the user. In a second embodiment, an attachment having a concave surface with prongs extending therethrough that can be moved such that the exposed portion of the prongs are lengthened or shortened, as desired. ## Claims ### Claim 1 An attachment for a hair dryer, comprising: an outer frame having: a first facet that includes a first set of prongs and at least one opening operable to permit airflow to exit the attachment; a second facet that includes a first set of bristles; and at least one frame engagement feature; a base rotatably coupled to the outer frame, the base including an attachment inlet and at least one base engagement feature; wherein the outer frame and base form an internal volume through which airflow can pass between the attachment inlet to the at least one opening of the first facet; wherein at times the at least one base engagement feature is engaged with the at least one frame engagement feature, the base is prevented from rotating relative to the outer frame; and wherein at times the at least one base engagement feature is not engaged with the at least one frame engagement feature, the base is rotatable to a user selected position relative to the outer frame. ### Claim 2 (depends on 1) The attachment for a hair dryer of claim 1 further including a third facet that includes a second set of bristles. ### Claim 3 (depends on 2) The attachment for a hair dryer of claim 2 wherein the first facet is positioned between the second facet and the third facet. ### Claim 4 (depends on 2) The attachment for a hair dryer of claim 2 wherein the third facet is angled relative to the first facet. ### Claim 5 (depends on 1) The attachment for a hair dryer of claim 1 wherein the second facet is angled relative to the first facet. ### Claim 6 (depends on 1) The attachment for a hair dryer of claim 1 wherein the prongs define a first stiffness and the first set of bristles define a second stiffness, the first stiffness being greater than the second stiffness. ### Claim 7 (depends on 1) The attachment for a hair dryer of claim 1 further including a release button for disengaging the at least one frame engagement feature from the at least one base engagement feature. ### Claim 8 (depends on 1) The attachment for a hair dryer of claim 1 wherein the second facet includes at least one opening operable to permit airflow to exit the attachment. ### Claim 9 An attachment for a hair dryer, comprising: an outer housing having a concave surface that includes an opening; a base coupled to the outer housing such that the base and the outer housing define an internal volume therebetween, the base defining an attachment inlet operable to receive airflow from a hair dryer; a first prong coupled to a movable platform, the prong extending from the platform to a distal end and including a prong air passageway operable to permit air to pass through the prong; wherein the platform is positioned in the internal volume and at least a portion of the prong extends through the opening in the concave surface; wherein the movable platform is movable between a first position and a second position; and wherein a greater portion of the prong extends through the opening at times the platform is in the second position than at times the platform is in the first position. ### Claim 10 (depends on 9) The attachment of claim 9 further comprising a plurality of prongs coupled to the movable platform. ### Claim 11 (depends on 10) The attachment of claim 10 wherein each of the plurality of prongs extends through an opening in the concave surface. ### Claim 12 (depends on 11) The attachment of claim 11 wherein the outer housing defines a lip surrounding the concave surface, the lip defining a plane; wherein the distal end of at least one prong is positioned on an opposite side of the plane than the platform at times the platform is in the second position. ### Claim 13 (depends on 9) The attachment of claim 9 wherein the concave surface includes at least one opening operable to operable to permit air to exit the attachment from the internal volume.