Oral care implement

Patent metadata

Field	Value
Publication number	US-10987204-B2
Application number	US-201716462577-A
Country	US
Kind code	B2
Filing date	Nov 20, 2017
Priority date	Nov 21, 2016
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

Oral care implement that can be detachably coupled to a handle having a motor. The oral care implement includes a drive assembly to operably engage the motor, a head portion that includes a body, a first carrier comprising a plurality of bristle tufts extending from the first carrier, the first carrier comprising a central passageway; and a second carrier disposed within the central passageway of the first carrier, the second carrier comprising an elastomeric cleaning element extending from the second carrier. The drive assembly may be operably coupled to each of the first and second carriers and configured to: (1) produce a first oscillatory motion of the first carrier about a first rotational axis; and (2) produce a second oscillatory motion of the second carrier, the second oscillatory motion being counter to the first oscillatory motion.

First claim

What is claimed is:

1. An oral care implement for detachable coupling to a handle having a power source and a motor including a drive shaft, the oral care implement comprising:
a drive assembly having a first portion configured to operably engage the drive shaft of the motor;
a head portion comprising:
a body;
a first carrier comprising a plurality of bristle tufts extending from the first carrier, the first carrier comprising a central passageway; and
a second carrier disposed within the central passageway of the first carrier, the second carrier comprising an elastomeric cleaning element extending from the second carrier; and

the drive assembly having a second portion operably coupled to each of the first and second carriers and configured to: (1) produce a first oscillatory motion of the first carrier about a first rotational axis; and (2) produce a second oscillatory motion of the second carrier, the second oscillatory motion being counter to the first oscillatory motion;
wherein the elastomeric element is a cup member that extends along a first axis, the cup member comprising a plurality of grooves formed in a top surface of the cup member, each of the grooves extending along a groove axis that extends radially outward from the first axis; and
wherein the grooves have a depth that increases with distance from the first axis.

2. The oral care implement according to claim 1 further comprising a third carrier having a plurality of tooth cleaning elements extending from the third carrier, the third carrier being fixed relative to the body of the head portion.

3. The oral care implement according to claim 2 wherein the tooth cleaning elements extending from the third carrier comprises a plurality of rows of bristle tufts having a square transverse cross-section and a plurality of rows of bristle tufts having a circular transverse cross-section arranged in an alternating pattern.

4. The oral care implement according to claim 1 further comprising an attachment portion configured to detachably couple the oral care implement to the handle, the body of the head portion coupled to the attachment portion.

5. The oral care implement according to claim 1 wherein the first carrier is an annular structure; and wherein the bristle tufts of the first carrier are arranged in a spaced-apart pattern that circumferentially surrounds the elastomeric cleaning element.

6. The oral care implement according to claim 1 wherein the elastomeric cleaning element is the only tooth cleaning located on the second carrier.

7. The oral care implement according to claim 1 wherein the grooves comprise a plurality of first grooves and a plurality of second grooves; and wherein, taken along a reference cylinder about the first axis, each of the first grooves has a first transverse cross-section and each of the second grooves has a second transverse cross-section, the first and second transverse cross-sections being different from one another.

8. The oral care implement according to claim 1 wherein adjacent ones of the grooves are separated by a rib member that extends along a rib axis that extends radially outward from the first axis; and wherein the rib member has a thickness that increases with distance from the first axis.

9. The oral care implement according to claim 1 wherein the cup member comprises an inner surface that defines a central cavity having a cavity floor and an open top end; and wherein the central cavity has a depth that is greater than the depths of the grooves.

10. The oral care implement according to claim 1 wherein the top surface of the cup member is sloped upward with distance from the first axis.

11. The oral care implement according to claim 1 wherein the elastomeric cleaning element has a first diameter and the head portion has a transverse width; and wherein the first diameter is at least one half the transverse width.

12. The oral care implement according to claim 1 wherein the cup member comprises a continuous annular wall having a distal surface that forms a portion of the top surface of the cup member, and wherein the grooves terminate at an inner surface of the continuous annular wall.

Assignees

• Colgate Palmolive Co

Inventors

• Bloch Brian
• Tan Thuanchong

Classifications

• A61C17/222

  Brush body details, e.g. the shape thereof or connection to handle · CPC title

• A61C17/3436

  Rotation around the axis perpendicular to the plane defined by the bristle holder · CPC title

• A46B13/02

  power-driven {carriers} · CPC title

• A46B2200/1066

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

• A61C17/349 Primary

  with multiple brush bodies · CPC title