Oral care implement

Patent metadata

Field	Value
Publication number	US-11622618-B2
Application number	US-201816619122-A
Country	US
Kind code	B2
Filing date	Dec 13, 2018
Priority date	Dec 13, 2018
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

An oral care implement having a head with a plurality of cleaning elements coupled thereto and extending therefrom. In the exemplified embodiment, the cleaning elements have a plurality of bristle tufts each including a plurality of bristle filaments. In one aspect, the oral care implement may include a first bristle tuft having inner and outer filaments with the outer filaments being taller than the inner filaments and a second bristle tuft having inner and outer filaments with the outer filaments being shorter than the inner filaments. In another aspect, the oral care implement may include a bristle tuft having inner and outer filaments with the inner filaments being either taller or shorter than the outer filaments, and whereby distal ends of the inner and outer filaments are angled relative to an axis of the bristle tuft.

First claim

What is claimed is:

1. An oral care implement comprising:
a head comprising a front surface, a longitudinal axis extending between proximal and distal ends of the head, and a transverse axis that is perpendicular to the longitudinal axis and equidistant from the proximal and distal ends of the head;
a plurality of first bristle tufts, each of the plurality of first bristle tufts extending from the front surface of the head to a terminal end, each of the plurality of first bristle tufts comprising a plurality of first outer filaments and a plurality of first inner filaments, the first outer filaments surrounding the first inner filaments, and wherein each of the first outer filaments is taller than each of the first inner filaments; and
a plurality of second bristle tufts, each of the plurality of second bristle tufts extending from the front surface of the head to a terminal end, each of the plurality of second bristle tufts comprising a plurality of second outer filaments and a plurality of second inner filaments, the second outer filaments surrounding the second inner filaments, and wherein each of the second outer filaments is shorter than each of the second inner filaments;
wherein the terminal end of each of the first bristle tufts is inclined and slopes upwardly in a direction towards the longitudinal axis of the head, and wherein the terminal end of each of the second bristle tufts is inclined and slopes upwardly in a direction away from the longitudinal axis of the head;
wherein each of the plurality of first bristle tufts comprise a first longitudinal axis, wherein the first outer filaments collectively form a sheath portion of each of the plurality of first bristle tufts and the first inner filaments collectively form a core portion of each of the plurality of first bristle tufts that is surrounded by the sheath portion of each of the plurality of first bristle tufts, a distal end of the sheath portion of each of the plurality of first bristle tufts forming a first outer distal surface of each of the plurality of first bristle tufts and a distal end of the core portion of each of the plurality of first bristle tufts forming a first inner distal surface of each of the plurality of first bristle tufts, and wherein the first inner distal surface and the first outer distal surface of each of the plurality of first bristle tufts are oriented at an oblique angle relative to the first longitudinal axis of each of the plurality of first bristle tufts; and
wherein the first inner distal surface and the first outer distal surface of each of the plurality of first bristle tufts are parallel to one another and oriented at the same oblique angle relative to the first longitudinal axis of each of the plurality of first bristle tufts.

2. The oral care implement according to claim 1 wherein the front surface of the head comprises a perimeter portion and a central portion that is surrounded by the perimeter portion, wherein the plurality of first bristle tufts are located along the perimeter portion the plurality of second bristle tufts are located along the central portion.

3. The oral care implement according to claim 2 , wherein each of the plurality of first bristle tufts are located along the perimeter portion of the front surface of the head and each of the plurality of second bristle tufts are located along the central portion of the front surface of the head.

4. The oral care implement according to claim 3 wherein terminal ends of the first bristle tufts collectively form a convex side profile and wherein terminal ends of the second bristle tufts collectively form a concave side profile.

5. The oral care implement according to claim 3 wherein each of the first bristle tufts comprises an inclined terminal end that slopes upwardly in a direction towards the central portion of the front surface of the head, and wherein each of the second bristle tufts comprises an inclined terminal end that slopes upwardly in a direction towards the perimeter portion of the front surface of the head.

6. The oral care implement according to claim 1 wherein the front surface of the head comprises a perimeter portion and a central portion that is surrounded by the perimeter portion, wherein each of the plurality of second bristle tufts are located along the perimeter portion of the front surface of the head and each of the plurality of first bristle tufts are located along the central portion of the front surface of the head.

7. The oral care implement according to claim 1 , wherein each of the plurality of first bristle tufts has a different height than at least one of the other of the plurality of first bristle tufts, and wherein each of the plurality of second bristle tufts has a different height than at least one of the other of the plurality of second bristle tufts.

8. The oral care implement according to claim 1 wherein each of the plurality of second bristle tufts comprises a second longitudinal axis, wherein the second outer filaments collectively form a sheath portion of each of the plurality of second bristle tufts and the second inner filaments collectively form a core portion of each of the plurality of second bristle tufts that is surrounded by the sheath portion of each of the plurality of second bristle tufts, a distal end of the sheath portion of each of the plurality of second bristle tufts forming a second outer distal surface of each of the plurality of second bristle tufts and a distal end of the core portion of each of the plurality of second bristle tufts forming a second inner distal surface of each of the plurality of second bristle tufts, wherein the second inner distal surface and the second outer distal surface of each of the plurality of second bristle tufts are oriented at an oblique angle relative to the second longitudinal axis of each of the plurality of second bristle tufts.

9. The oral care implement according to claim 8 wherein the second inner distal surface and the second outer distal surface of each of the plurality of second bristle tufts are parallel to one another and oriented at the same oblique angle relative to the second longitudinal axis of each of the plurality of second bristle tufts.

10. An oral care implement comprising:
a head comprising a front surface;
a first bristle tuft coupled to the head and comprising a first longitudinal axis, the first bristle tuft comprising a plurality of first outer filaments that form a sheath portion of the first bristle tuft and a plurality of first inner filaments that form a core portion of the first bristle tuft, the sheath portion surrounding the core portion, and wherein either: (1) each of the first outer filaments is taller than each of the first inner filaments; or (2) each of the first outer filaments is shorter than each of the first inner filaments; and
wherein a distal end of the sheath portion of the first bristle tuft forms a first outer distal surface of the first bristle tuft and a distal end of the core portion of the first bristle tuft forms a first inner distal surface of the first bristle tuft; and
wherein the first outer distal surface of the first bristle tuft is oriented at a first oblique angle relative to the first longitudinal axis of the first bristle tuft and the first inner distal surface of the first bristle tuft is oriented at a second oblique angle relative to the first longitudinal axis of the first bristle tuft; and
wherein the first outer distal surface of the first bristle tuft and the first inner distal surface of the first bristle tuft are oriented at a third oblique angle relative to the front surface of the head.

11. The oral care implement according to claim 10 wherein the first and second oblique

Assignees

• Colgate Palmolive Co

Inventors

• Liu Chang L
• Zhou Jiang
• Ji Yanmei
• Xie Fan Gang

Classifications

• A46B9/065

  the bristles or the tufts being embedded in a different brushing material · CPC title

• A46B9/04 Primary

  {Arranged like in or} for toothbrushes · CPC title

• A46D1/0276

  Bristles having pointed ends · CPC title

• A46B9/028 Primary

  Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone · CPC title

• A46B9/06

  Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber · CPC title