Oral care implement and spiral bristle for use with the same

Patent metadata

Field	Value
Publication number	US-11246405-B2
Application number	US-201516061366-A
Country	US
Kind code	B2
Filing date	Dec 14, 2015
Priority date	Dec 14, 2015
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A spiral bristle (201) includes: a first component (231), a second component (233), and a third component (235), with each of the second and third components (233, 235) wrapping around the first component (231) in a helical and spaced-apart manner, the second and third components (233, 235) isolated from one another by the first component (231). An oral care implement includes the spiral bristle.

First claim

What is claimed is:

1. A spiral bristle comprising:
a first component, a second component, and a third component forming a polygonal transverse cross-sectional profile;
each of the second and third components wrapping around the first component in a helical and spaced-apart manner, the second and third components isolated from one another by the first component;
wherein the first, second, and third components are formed of different materials and each one of the first, second, and third components forms an apex of the polygonal transverse cross-sectional profile;
wherein the polygonal transverse cross-sectional profile is a triangle; and
wherein the first component forms a truncated diamond shape within the polygonal transverse cross-sectional profile.

2. The spiral bristle according to claim 1 wherein the first component is a first color, the second component is a second color, and a third component is a third color, each of the first, second, and third colors being different from one another.

3. The spiral bristle according to claim 2 further comprising a bristle outer surface having a helically striped pattern comprising a repeating sequence of:
the first color→the second color→the first color→the third color.

4. The spiral bristle according to claim 1 wherein the transverse cross-sectional profile defines a bristle outer surface, the first component forming a first section of the bristle outer surface, the second component forming a second section of the bristle outer surface, and the third component forming a third section of the bristle outer surface; and wherein the first section of the bristle outer surface is located between the second and third sections of the bristle outer surface.

5. The spiral bristle according to claim 1 further comprising a bristle axis; and wherein the bristle axis does not intersect either of the second and third components.

6. The spiral bristle according to claim 1 further comprising a base portion and a tapered portion that terminates in a free end, the base portion having a substantially constant transverse cross-section and the tapered portion having a transverse cross-section that decreases in size moving toward the free end.

7. The spiral bristle according to claim 1 wherein the first, second, and third components are coextruded.

8. The spiral bristle according to claim 1 wherein the first component is formed of a first plastic, the second component is formed of a second plastic, and the third component is formed of a third plastic, the first plastic capable of forming chemical bonds with each of the second and third plastics, and the second and third plastics incapable of forming chemical bonds with one another.

9. The spiral bristle according to claim 1 wherein the first and second components meet at an interface, the interface being flush.

10. An oral care implement comprising:
a handle;
a head;
at least one spiral bristle according to claim 1 , the at least one spiral bristle mounted to the head.

Assignees

• Colgate Palmolive Co

Inventors

• Xi Wen Jin
• Zhang Bo
• Guo Guang Sheng

Classifications

• A46B9/04 Primary

  {Arranged like in or} for toothbrushes · CPC title

• A46D1/04

  Preparing bristles · CPC title

• A46B2200/1066

  Toothbrush for cleaning the teeth or dentures (A61C17/16 takes precedence; bristles arrangements for toothbrushes A46B9/04) · CPC title

• A46D1/0238 Primary

  Bristles with non-round cross-section · CPC title

• A46D1/0261

  Roughness structure on the bristle surface · CPC title