Oral care implement

Patent metadata

Field	Value
Publication number	US-11388984-B2
Application number	US-201816225592-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Dec 20, 2017
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

An oral care implement comprises a head and a handle, the head being repeatedly attachable to and detachable from the handle. The head is at least partially made from a material having a density from about 0.5 g/cm3 to about 1.2 g/cm3, while the handle is at least partially made from a material having a density from about 2.1 g/cm3 to about 3.1 g/cm3.

First claim

What is claimed is:

1. An oral care implement ( 10 , 300 , 310 ) comprising a head ( 14 ) and a handle ( 12 , 600 , 610 ), the head ( 14 ) being structured and configured to be repeatedly attachable to and detachable from the handle ( 12 , 600 , 610 ),
wherein the head comprises at least one of a non-magnetic material and a non-ferromagnetic material, and the handle comprises at least one of a magnetic material and a ferromagnetic material comprising from about 13 weight percent to about 30 weight percent of an amorphous thermoplastic resin, from about 3 weight percent to about 25 weight percent of aluminum oxide, boron nitride or aluminum silicate, and from about 45 weight percent to about 67 weight percent of iron oxide.

2. The oral care implement of claim 1 , wherein a density of the material of the head is from about 0.5 g/cm 3 to about 1.2 g/cm 3 ; and/or a density of the material of the handle is from about 2.1 g/cm 3 to about 3.1 g/cm 3 .

3. The oral care implement of claim 1 , wherein the material of the head is polypropylene.

4. The oral care implement of claim 1 , wherein the amorphous thermoplastic resin is selected from the group consisting of acrylonitrile butadiene styrene, polystyrene, styrene acrylonitrile, and any mixture thereof.

5. The oral care implement of claim 1 , wherein the at least one of a magnetic material and a ferromagnetic material comprises about 27.5 weight percent of an amorphous thermoplastic resin, about 17 weight percent of aluminum oxide, about 51 weight percent of iron oxide, and about 4.5% glass fiber.

6. The oral care implement of claim 1 , wherein the amorphous thermoplastic resin comprises about 17% weight percent styrene acrylonitrile, and 10.5 weight percent of a blend, the blend comprising polybutylene terephthalate and polyethylene terephthalate.

7. A kit ( 22 ) comprising the oral care implement of claim 1 and a magnetic holder ( 24 ) for attaching and holding the oral care implement.

8. A method for manufacturing an oral care implement comprising a handle and a head structured and configured to be repeatedly attached to and detached from the handle, the method comprising steps of:
providing an amorphous thermoplastic resin;
providing aluminum oxide, boron nitride or aluminum silicate;
providing iron oxide;
mixing the amorphous thermoplastic resin, aluminum oxide, boron nitride or aluminum silicate and iron oxide into a magnetic and/or ferromagnetic molding material;
heating the molding material mixture into a flowable molding material;
molding the flowable molding mixture into a handle or part of a handle, wherein the handle or its part comprises a material having a density of from about 2.1 g/cm 3 to about 3.1 g/cm 3 ;
providing at least one of a non-magnetic material and a non-ferromagnetic material; and
molding the non-magnetic and/or non-ferromagnetic material into a head or part of a head, wherein the head comprises a material having a density of from about 0.5 g/cm 3 to about 1.2 g/cm 3 .

9. The method of claim 8 , wherein the amorphous thermoplastic resin comprises styrene acrylonitrile, polybutylene terephthalate and/or polyethylene terephthalate.

10. The method of claim 8 , wherein at least a portion of the amorphous thermoplastic resin is blended with glass fiber.

11. The method of claim 8 , wherein the amorphous thermoplastic resin is provided in a range from about 13 weight percent to about 30 weight percent, the aluminum oxide, boron nitride or aluminum silicate is provided in a range from about 3 weight percent to about 25 weight percent and the iron oxide is provided in a range from about 45 weight percent to about 67 weight percent.

12. The method of claim 8 , comprising the additional step of electroplating the handle with a thermoplastic elastomer or a polypropylene material.

13. The method of claim 8 , wherein at least one of the head and the handle is molded by injection or extrusion molding.

14. An oral care implement comprising a handle and a head structured and configured to be repeatedly attachable to and detachable from the handle,
wherein the head is made of a non-magnetic and/or non-ferromagnetic material having a density from about 0.5 g/cm 3 to about 1.2 g/cm 3 , and the handle is made of a magnetic and/or ferromagnetic material having a density from about 2.1 g/cm 3 to about 3.1 g/cm 3 and comprising from about 13 weight percent to about 30 weight percent of an amorphous thermoplastic resin, from about 3 weight percent to about 25 weight percent of aluminum oxide, boron nitride or aluminum silicate, and from about 45 weight percent to about 67 weight percent of iron oxide.

15. The oral care implement of claim 14 , wherein the density of the material of the head is from about 0.7 g/cm 3 to about 1.0 g/cm 3 .

16. The oral care implement of claim 15 , wherein the density of the material of the handle is from about 2.3 g/cm 3 to about 2.8 g/cm 3 .

17. The oral care implement of claim 14 , wherein the density of the material of the handle is from about 2.3 g/cm 3 to about 2.8 g/cm 3 .

Assignees

• Gillette Co Llc

Inventors

• Jungnickel Uwe

Classifications

• A46B2200/1066

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

• A46B2200/01

  Disposable brush (A46B11/0003, A46B5/0004 take precedence) · CPC title

• A46B17/02

  Devices for holding brushes in use · CPC title

• A46B9/04

  {Arranged like in or} for toothbrushes · CPC title

• A46B7/042

  Clip or snap connection for bristle carriers · CPC title