Hair styling appliance

Patent metadata

Field	Value
Publication number	US-12127656-B2
Application number	US-202017438323-A
Country	US
Kind code	B2
Filing date	Feb 25, 2020
Priority date	Mar 22, 2019
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

A hair straightening apparatus having two arms pivotably coupled together and arranged to receive hair within a cavity formed between them is disclosed. A plenum in at least one arm includes an air inlet for receiving airflow from a fan unit and an air outlet for emitting airflow towards hair within the cavity. The air outlet extends along the inner wall of at least one of the first arm and the second arm and is adapted to direct airflow towards a lower edge of the arms.

First claim

The invention claimed is:

1. A hair styling apparatus comprising;
a first arm and a second arm coupled together at a first end thereof, wherein an inner wall of the first arm faces an inner wall of the second arm, each inner wall having an upper edge and a lower edge, wherein the first arm and the second arm are arranged to receive hair within a cavity formed between the first arm and the second arm, the hair extending through the cavity in a first direction from the upper edges of the inner walls toward the lower edges of the inner walls, wherein at least one of the first arm and the second arm comprise a plenum, the plenum comprising an air inlet for receiving airflow from a fan unit and an air outlet for emitting airflow towards hair within the cavity, wherein the air outlet extends along the inner wall of the at least one of the first arm and the second arm, wherein the air outlet is adapted to emit airflow out of the air outlet at an angle in the range from 30° and 60° from a plane of the inner wall, wherein the air outlet, the inner wall of the first arm, and the inner wall of the second arm are configured to direct airflow out of the cavity along the first direction.

2. The hair styling apparatus according to claim 1 , wherein the air outlet comprises an aperture, wherein the aperture has a width in the range from 1 mm and 3 mm.

3. The hair styling apparatus according to claim 2 , wherein the width of the aperture is in the range from 1.5 mm and 2.5 mm.

4. The hair styling apparatus according to claim 2 , wherein the aperture has a length in the range from 90 mm and 180 mm.

5. The hair styling apparatus according to claim 2 , wherein the aperture is a slot.

6. The hair styling apparatus according to claim 2 , wherein the at least one of the first arm and the second arm has a length extending along a longitudinal axis, wherein the aperture is located in parallel alignment with the longitudinal axis and is disposed in proximity to the upper edge of the of the inner wall of the at least one of the first arm and the second arm.

7. The hair styling apparatus according to claim 2 , wherein the air outlet comprises a channel between the plenum and the cavity, said channel terminating in said aperture.

8. The hair styling apparatus according to claim 7 , wherein the channel has substantially parallel walls for a pre-determined distance prior to the air outlet.

9. The hair styling apparatus according to claim 7 , wherein the channel has gradually converging walls for a pre-determined distance prior to the air outlet.

10. The hair styling apparatus according to claim 7 , wherein the air outlet comprises at least one vane disposed within the channel.

11. The hair styling apparatus according to claim 10 , wherein the at least one vane is adapted to modify the emitted airflow direction in an x-axis of the apparatus.

12. The hair styling apparatus according to claim 2 , wherein the aperture has a constant width along the length of the air outlet.

13. The hair styling apparatus according to claim 2 , wherein the aperture has a non-constant width along the length of the air outlet.

14. The hair styling apparatus according to claim 1 , wherein the air outlet is adapted to emit airflow generally towards the lower edges of the inner walls.

15. The hair styling apparatus according to claim 1 , wherein the angle at which the air outlet is adapted to emit the airflow is in the range from 40° and 50° from the plane of the inner wall.

16. The hair styling apparatus according to claim 1 , wherein the air outlet is located in each of the first arm and the second arm.

17. The hair styling apparatus according to claim 16 , wherein the air outlets are located symmetrically in each of the first arm and the second arm.

18. The hair styling apparatus according to claim 16 , wherein the air outlets are located asymmetrically in each of the first arm and the second arm.

19. The hair styling apparatus according to claim 1 , wherein the first arm and the second arm are movable between an open position and a closed position in which the inner wall of the first arm and the inner wall of the second arm are parallel along a plane, and wherein the cavity is formed when the first arm and the second arm are in the closed position.

Assignees

• Dyson Technology Ltd

Inventors

• Beaumont Rory William
• Courtney Stephen Benjamin
• Ballarati Maurizio
• Hughes Alexander Edward
• Coulton Robert Mark Brett
• Imhasly Nathan Haruna Waters

Classifications

• A45D2001/045

  the power being supplied by batteries · CPC title

• A45D2/001

  Hair straightening appliances · CPC title

• A45D1/04 Primary

  by electricity · CPC title

• A45D20/50

  and provision for an air stream · CPC title

• A45D20/12 Primary

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