Attachment for a hair care appliance

Patent metadata

Field	Value
Publication number	US-2025049197-A1
Application number	US-202218718474-A
Country	US
Kind code	A1
Filing date	Dec 12, 2022
Priority date	Dec 17, 2021
Publication date	Feb 13, 2025
Grant date	—

Abstract

An attachment for mounting to a hair care appliance configured to supply a heated airflow. The attachment includes an airflow passage extending from an upstream airflow inlet for receiving an airflow from the appliance to a downstream airflow outlet for discharging the airflow onto a user's hair. The attachment also includes a first vane arranged in the airflow passage to deflect a portion of the airflow in a first direction, and a second vane arranged in the airflow passage to deflect another portion of the airflow in a second direction that is different to the first direction. Each vane has opposing surfaces extending between an upstream leading edge and a downstream trailing edge of the vane.

First claim

1 . An attachment for mounting to a hair care appliance configured to supply a heated airflow, the attachment comprising:
an airflow passage extending from an upstream airflow inlet for receiving an airflow from the appliance to a downstream airflow outlet for discharging the airflow onto a user's hair; and a first vane arranged in the airflow passage to deflect a portion of the airflow in a first direction, and a second vane arranged in the airflow passage to deflect another portion of the airflow in a second direction that is different to the first direction, each vane comprising opposing surfaces extending between an upstream leading edge and a downstream trailing edge of the vane.

2 . The attachment according to claim 1 , wherein each vane is configured to deflect a respective portion of the airflow outwardly from a central region of the airflow passage towards a peripheral region of the airflow passage.

3 . The attachment according to claim 2 , wherein the first vane is configured to deflect a portion of the airflow towards a first side of the airflow passage, and the second vane is arranged to deflect a portion of the airflow towards a second side of the airflow passage, the second side being opposed to the first side across the airflow passage.

4 . The attachment according to claim 1 , wherein each vane extends along a respective reference plane that is arranged obliquely with respect to a central axis of the airflow passage.

5 . The attachment according to claim 4 , wherein each reference plane forms an angle of less than 25° with the central axis of the airflow passage.

6 . The attachment according to claim 4 , wherein the opposing surfaces of each vane comprise an inner surface facing the central axis of the airflow passage and an opposing outer surface facing away from the central axis of the airflow passage.

7 . The attachment according to claim 6 , wherein the inner surface of each vane is curved between the leading and trailing edges of the vane.

8 . The attachment according to claim 7 , wherein the curvature of each inner surface is convex towards the central axis of the airflow passage.

9 . The attachment according to claim 6 , wherein the outer surface of each vane is substantially planar.

10 . The attachment according to claim 1 , wherein the leading edges of the first and second vanes are substantially aligned along a shared axis extending transversely across the airflow passage.

11 . The attachment according to claim 10 , wherein the leading edges of the first and second vanes are connected end-to-end along the shared axis.

12 . The attachment according to claim 10 , wherein the outlet is elongate so as to have an elongate axis which is perpendicular to a central axis of the airflow passage, and wherein the shared axis is perpendicular to the elongate axis.

13 . The attachment according to claim 12 , wherein the shared axis is positioned substantially centrally between opposing sides of the airflow passage.

14 . The attachment according to claim 10 , comprising a plurality of said first vanes and a plurality of said second vanes arranged in an alternating pattern so as to be interdigitated along the shared axis.

15 . The attachment according to claim 1 , wherein a trailing portion of each vane tapers inwardly in a direction towards the trailing edge of the vane.

16 . The attachment according to claim 1 , wherein a leading portion of each vane tapers outwardly in a direction away from the leading edge of the vane.

17 . The attachment according to claim 1 , wherein the leading edge and/or trailing edge of each vane is rounded.

18 . The attachment according to claim 1 , wherein the outlet of the attachment is larger than the inlet.

19 . The attachment according to claim 18 , wherein the cross-sectional area of the airflow passage increases gradually from the inlet to the outlet.

20 . The attachment according to claim 1 , comprising a row of comb teeth extending across the outlet.

Assignees

• Dyson Technology Ltd

Inventors

• Cheah Jen Shen
• Utama Ng Eric Purnama
• Mcgarva John Robert
• Adrianto Yopie

Classifications

• A45D24/00

  Hair combs for care of the hair; Accessories therefor (high combs or dress combs A45D8/12; hair-drying combs A45D20/48 - A45D20/52; hair-trimming devices, using a razor blade, integral or combined with combs B26B21/00, e.g. B26B21/12) · CPC title

• A45D20/122

  Diffusers, e.g. for variable air flow · CPC title

• A45D20/124 Primary

  comprising rotating elements · CPC title

• A45D20/12 Primary

  Details thereof or accessories therefor, e.g. nozzles, stands · CPC title