Hot brush

Patent metadata

Field	Value
Publication number	US-12376660-B2
Application number	US-202318098086-A
Country	US
Kind code	B2
Filing date	Jan 17, 2023
Priority date	Jan 17, 2023
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A hair care appliance and methods for drying and/or styling hair are provided. The hair care appliance includes a handle having an inlet and a body coupled to the handle and having a plurality of outlets. The handle can include a fan assembly and a motor assembly and the applicant can include one or more heater assemblies. In one embodiment, the appliance includes at least one heater assembly extending along the body between the proximal and distal ends. In some aspects, the at least one heater assembly can longitudinally separate a first plurality of bristles from a second plurality of bristles. In other embodiments, a baffle for directing airflow is provided. In other embodiments, the appliance is configured to switch between hair drying and hair heating modes.

First claim

The invention claimed is:

1. A hair care appliance, comprising:
a body having proximal and distal ends with an inner lumen extending therethrough, the body including
a first plurality of bristles positioned along a first surface extending between the proximal and distal ends, the first surface including a first plurality of outlets therein for allowing airflow therethrough from the inner lumen of the body,
a second plurality of bristles positioned along a second surface extending between the proximal and distal ends, the second surface being positioned on an opposite side of the body from the first surface, and the second surface including a second plurality of outlets therein for allowing airflow therethrough from the inner lumen of the body, and
at least one heater assembly extending along the body between the proximal and distal ends and including a plurality of heating plates spaced longitudinally from one another and excluding bristles therebetween, the at least one heater assembly longitudinally separating the first plurality of bristles from the second plurality of bristles, wherein the first and second surfaces lack a heater assembly.

2. The hair care appliance of claim 1 , wherein the at least one heater assembly comprises a first heater assembly positioned on a first side of the body and a second heater assembly positioned on a second side of the body opposite the first side of the body.

3. The hair care appliance of claim 2 , wherein the first or second heater assemblies includes a thermal cutoff switch.

4. The hair care appliance of claim 1 , wherein the body has a cross-sectional shape that is elliptical.

5. The hair care appliance of claim 1 , further comprising a handle coupled to the proximal end of the body, the handle having an air inlet at a proximal end, a fan assembly, a motor assembly, and a third heater assembly configured to heat air drawn into the handle through the air inlet by the fan assembly.

6. The hair care appliance of claim 5 , further comprising a user interface positioned on the handle and configured to provide a visual indication that indicates an operating status of each heating element of the at least one heater assembly.

7. The hair care appliance of claim 1 , wherein the at least one heater assembly includes a plurality of heat insulating spacers positioned adjacent to the plurality of heating plates, a heating element, and a heat transfer element configured to convey heat from the heating element to the plurality of heating plates.

8. The hair care appliance of claim 7 , wherein the heat transfer element includes a base adjacent to the heating element and wherein the plurality of heating plates extends radially from the base.

9. The hair care appliance of claim 7 , wherein a height of respective plates of the plurality of heating plates is less than a height of respective spacers of the plurality of heat insulating spacers.

10. The hair care appliance of claim 1 , wherein the first and second plurality of bristles are interspersed with the first and second plurality of outlets on the first and second surfaces of the body.

11. The hair care appliance of claim 1 , wherein at least a portion of at least one of the first and second plurality bristles includes a collar surrounding a base of the bristle.

12. A hair care appliance, comprising:
a handle having proximal and distal ends with an air inlet at the proximal end, the handle including a fan assembly and a motor assembly; and
a body having proximal and distal ends with an inner lumen extending therethrough, the proximal end of the body being coupled to the distal end of the handle, the body including
a brushing region comprising a first plurality of bristles positioned along a first surface and a second plurality of bristles positioned along a second surface opposite the first surface, the first and second surfaces including a first plurality of outlets therein for allowing airflow therethrough from the inner lumen of the body, and
a heating region comprising a first heater assembly positioned along a third surface and a second heater assembly positioned along a fourth surface opposite the third surface and orthogonal to the first and second surfaces, the first and second heater assemblies having a plurality of heating plates projecting radially outward from the third and fourth surfaces and spaced longitudinally from one another,

wherein the heating region excludes bristles and the first surface and the second surface exclude a heater assembly thereon.

13. The hair care appliance of claim 12 , further comprising a plurality of heat insulating spacers positioned between each of the plurality of heating plates.

14. The hair care appliance of claim 13 , wherein the heating region includes a heating element and a heat transfer element configured to convey heat from the heating element to the plurality of heating plates.

15. The hair care appliance of claim 13 , wherein the heat insulating spacers project radially outward from the third and fourth surfaces.

16. The hair care appliance of claim 15 , wherein a height of the plurality of heating plates is less than a height of the plurality of heat insulating spacers.

Assignees

• Sharkninja Operating Llc

Inventors

• Higgins Colby Jackson
• Rrudho Gentian
• Walter Katelyn Lee
• Mcguinness Molly

Classifications

• A46B2200/104

  Hair brush · CPC title

• A45D20/48

  Hair-drying combs or hair-drying brushes, with internal heating means · CPC title

• A46B15/003

  Enhancing with heat · CPC title

• A45D2/001 Primary

  Hair straightening appliances · CPC title

• A45D20/50

  and provision for an air stream · CPC title