Attachment for a handheld appliance

Patent metadata

Field	Value
Publication number	US-12295472-B2
Application number	US-201715468496-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 24, 2016
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

An attachment includes a casing having an air inlet for receiving airflow from a hair styling apparatus, a hair engaging member supported by the casing, an airflow outlet between the casing and the hair engaging member and shaped to direct air over an external surface of the hair engaging member and airflow guiding means extending over the external surface of the hair engaging member.

First claim

The invention claimed is:

1. An attachment for a hair styling apparatus comprising:
a casing comprising an air inlet for receiving airflow from a hair styling apparatus;
a hair engaging member supported by the casing and extending in a longitudinal direction of the attachment, wherein the hair engaging member comprises a curved external surface and a plurality of bristles, wherein the hair engaging member is adapted to move relative to the casing due to movement of the hair engaging member through a user's hair; and
a selectively-closable airflow outlet that extends in the longitudinal direction and is formed as a slot by an overlap between an inwardly facing side face of a wall of the casing that extends in the longitudinal direction and a first side of the hair engaging member, the first side of the hair engaging member being disposed apart from the plurality of bristles, wherein the airflow outlet is shaped to direct air over the curved external surface of the hair engaging member from the first side of the hair engaging member toward an opposite side of the hair engaging member in a direction that is transverse to the longitudinal direction,
wherein the curved external surface of the hair engaging member comprises a plurality of ribs that form an airflow guide for guiding air that has exited the airflow outlet transversely to the longitudinal direction over the external surface of the hair engaging member, wherein each rib within the plurality of ribs extends substantially perpendicular to the longitudinal direction, and each rib within the plurality of ribs comprises an arcuate profile perpendicular to the longitudinal direction.

2. The attachment of claim 1 , wherein the airflow outlet extends in the longitudinal direction the length of the hair engaging member.

3. The attachment of claim 1 , wherein each rib in the plurality of ribs is positioned parallel to an adjacent rib and a channel is defined therebetween.

4. The attachment of claim 3 , wherein each channel in the plurality of ribs has a uniform channel width, and the channel width is greater than a width of a rib.

5. The attachment of claim 4 , wherein the width of each channel is in the range from 2 mm to 4 mm.

6. The attachment of claim 1 , wherein the ribs within the plurality of ribs have a uniform rib width.

7. The attachment of claim 1 , wherein the curved external surface of the hair engaging member has an arcuate profile perpendicular to the longitudinal direction.

8. The attachment of claim 1 , comprising two hair engaging members.

9. The attachment of claim 8 , wherein the hair engaging members are disposed side by side.

10. The attachment of claim 9 , wherein the casing comprises an outer casing section and an inner casing section, and a ledge of the inner casing section is located between the hair engaging members.

11. The attachment of claim 8 , comprising a second airflow outlet between the casing and a second hair engaging member and wherein the second airflow outlet is shaped to direct air over an external surface of the second hair engaging member.

12. The attachment of claim 1 , wherein the air inlet is configured so that airflow enters the attachment in the longitudinal direction.

13. The attachment of claim 1 , wherein the hair engaging member is adapted to rock relative to the casing upon movement of the hair engaging member through a user's hair.

14. The attachment of claim 1 , wherein the hair engaging member is adapted to pivot relative to the casing upon movement of the hair engaging member through a user's hair.

15. The attachment of claim 1 , wherein movement of the hair engaging member relative to the casing closes the airflow outlet.

16. An attachment for a hair styling apparatus comprising:
a casing comprising an air inlet for receiving airflow from a hair styling apparatus;
a hair engaging member supported by the casing and extending in a longitudinal direction of the attachment, wherein the hair engaging member comprises a curved external surface and a plurality of bristles, and the hair engaging member is movable from a first position to a second position relative to the casing; and
an airflow outlet that extends in the longitudinal direction and is formed as a slot arranged laterally between an inwardly facing side face of a wall of the casing that extends in the longitudinal direction and a first side of the hair engaging member, wherein the first side of the hair engaging member is disposed laterally apart from the plurality of bristles, wherein the airflow outlet is shaped to direct air over the curved external surface of the hair engaging member from the first side of the hair engaging member toward an opposite side of the hair engaging member in a lateral direction that is transverse to the longitudinal direction,
wherein the curved external surface of the hair engaging member comprises a plurality of ribs that form an airflow guide for guiding air that has exited the airflow outlet transversely to the longitudinal direction over the external surface of the hair engaging member, and each of the bristles of the plurality of bristles is positioned into, is supported by, and extends from one of the ribs of the plurality of ribs.

17. The attachment of claim 16 , wherein the hair engaging member is adapted to move relative to the casing due to movement of the hair engaging member through a user's hair.

18. The attachment of claim 16 , wherein movement of the hair engaging member relative to the casing selectively opens the airflow outlet when in the first position and selectively closes the airflow outlet when in the second position.

19. An attachment for a hair styling apparatus comprising:
a casing comprising an air inlet for receiving airflow from a hair styling apparatus;
a hair engaging member supported by the casing and extending in a longitudinal direction of the attachment, wherein the hair engaging member comprises a curved external surface and a plurality of bristles, and wherein the hair engaging member is adapted to move relative to the casing due to movement of the hair engaging member through a user's hair; and
a selectively-closable airflow outlet that extends in the longitudinal direction and is transversely oriented relative to the air inlet, the airflow outlet formed as a slot between an inwardly facing side face of a wall of the casing that extends in the longitudinal direction and a first side of the hair engaging member, the first side of the hair engaging member being disposed apart from the plurality of bristles, wherein the airflow outlet is shaped to direct air over the curved external surface of the hair engaging member from the first side of the hair engaging member toward an opposite side of the hair engaging member in a direction that is transverse to the longitudinal direction,
wherein the curved external surface of the hair engaging member comprises a plurality of ribs that form an airflow guide for guiding air that has exited the airflow outlet transversely to the longitudinal direction over the external surface of the hair engaging member, wherein each rib within the plurality of ribs extends substantially perpendicular to the longitudinal direction, and each rib within the plurality of ribs comprises an arcuate profile perpendicular to the longitudinal direction.

20. The attachment of claim 19 , wherein movement of the hair engaging member relative to the casing closes the airflow outlet.

Assignees

• Dyson Technology Ltd

Inventors

• NICOLSON Annmarie Rita
• Heffer Jonathan James Harvey
• Coulton Robert Mark Brett

Classifications

• A46B7/02

  in an expanding or articulating manner · CPC title

• A45D20/52

  Hair-drying combs or hair-drying brushes, adapted for heating by an external heating source {, e.g. air stream} · CPC title

• A46B11/00

  Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water (driven brush bodies A46B13/00; {massage apparatus with liquid delivery A61H7/002, A61H2201/105}; applying liquids or other fluent materials to surfaces by liquid carrying members in general, e.g. by pads B05C1/00, B05D1/28) · CPC title

• A45D20/50 Primary

  and provision for an air stream · CPC title

• A45D20/48 Primary

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