Brush

Patent metadata

Field	Value
Publication number	US-12364324-B2
Application number	US-202117922282-A
Country	US
Kind code	B2
Filing date	May 5, 2021
Priority date	May 21, 2020
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A brush is described that includes a body, a carrier, a plurality of bristles and a frame. Each bristle is secured to the carrier and extends through a respective hole in the frame. The carrier deforms in response to pivoting of each bristle, and is held between the body and the frame at each bristle.

First claim

The invention claimed is:

1. A brush comprising:
a body;
a carrier;
a plurality of bristles; and
a frame,
wherein each bristle is secured to the carrier and extends through a respective hole in the frame,
wherein the carrier deforms in response to pivoting of each bristle and the carrier is held between the body and the frame at one or more points around each bristle, whereby each bristle is movable independent of movement of other bristles of the plurality of bristles.

2. The brush as claimed in claim 1 , wherein the carrier protrudes upwardly beyond each hole in the frame.

3. The brush as claimed in claim 2 , wherein the carrier protrudes upwardly beyond each hole in the frame by a distance no greater than 5 mm.

4. The brush as claimed in claim 1 , wherein the brush comprises a cavity beneath each bristle.

5. The brush as claimed in claim 1 , wherein portions of the carrier surrounding each bristle are held between the frame and the body around each bristle.

6. The brush as claimed in claim 1 , wherein the frame is hyperbolic paraboloidic in shape.

7. The brush as claimed in claim 1 , wherein the bristles extend parallel to one another.

8. The brush as claimed in claim 1 , wherein the carrier is formed of silicone rubber.

9. The brush as claimed in claim 1 , wherein the carrier is formed of a material having a Shore A durometer of less than 50.

10. The brush as claimed in claim 1 , wherein the carrier is moulded to the bristles.

11. The brush as claimed in claim 1 , wherein the carrier is moulded to the frame.

12. The brush as claimed in claim 1 , wherein each bristle comprises a root and a shaft that extends upwardly from the root, and the shaft has a diameter of at least 1.2 mm.

13. The brush as claimed in claim 12 , wherein each bristle comprises a tip formed as a rounded end of the shaft.

14. The brush as claimed in claim 1 , wherein each bristle comprises a root and a shaft that extends upwardly from the root, the carrier surrounds the root, and the shaft has a length of at least 15 mm.

15. The brush as claimed in claim 1 , wherein each bristle has a flexural modulus of at least 1 GPa or a flexural stiffness of at least 500 N/m.

16. The brush as claimed in claim 1 , wherein the bristles are formed of metal.

17. The brush as claimed in claim 1 , wherein the bristles are arranged in rows, the bristles in each row are staggered relative to bristles in adjacent rows, and the bristles have a pitch perpendicular to a brushing direction of the brush of between 5 mm and 8 mm, and a pitch parallel to the brushing direction of between 10 mm and 16 mm.

18. A brush comprising a carrier, a plurality of bristles and a frame, wherein the carrier is moulded to the bristles and the frame, wherein each bristle extends through a respective hole in the frame, wherein portions of the carrier at areas moulded to the bristles deform in response to pivoting of each bristle whereby each of the plurality of bristles is independently movable relative to the other bristles.

Assignees

• Dyson Technology Ltd

Inventors

• Van Kempen Chris Taylor
• Coulton Robert Mark Brett

Classifications

• A46B2200/104

  Hair brush · CPC title

• A46B3/20 Primary

  the bristles being fixed or joined in rubber bodies, e.g. in soft rubber · CPC title

• A46B9/023 Primary

  arranged like in hair brushes, e.g. hair treatment, dyeing, streaking · CPC title

• A46B7/06

  movably during use {, i.e. the normal brushing action causing movement (driven brush bodies A46B13/00)} · CPC title