Oral care implement

Patent metadata

Field	Value
Publication number	US-12226010-B2
Application number	US-202318100730-A
Country	US
Kind code	B2
Filing date	Jan 24, 2023
Priority date	Dec 20, 2017
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

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 made from a non-magnetic and/or non-ferromagnetic material, while the handle is at least partially made from a magnetic and/or ferromagnetic material.

First claim

What is claimed is:

1. An oral care implement ( 10 ) comprising a head ( 14 ) and a handle ( 12 ), the head ( 14 ) being repeatedly attachable to and detachable from the handle ( 12 ), the head ( 14 ) being made from a non-magnetic and/or non-ferromagnetic material, and the handle ( 12 ) being at least partially made from a magnetic and/or ferromagnetic material,
wherein the magnetic and/or ferromagnetic material comprises an amorphous thermoplastic resin and iron oxide powder,
wherein the magnetic and/or ferromagnetic material has been molded into the handle ( 12 ) or part of the handle ( 12 ) of the oral care implement ( 10 ) by either injection molding or extrusion molding,
wherein the handle ( 14 ) further comprises a thumb rest ( 16 ) being made from thermoplastic elastomer material and/or from polypropylene material,
wherein a periphery of the thumb rest ( 16 ) is surrounded by the magnetic and/or ferromagnetic material of the handle ( 12 ).

2. The oral care implement ( 10 ) of claim 1 , wherein the magnetic and/or ferromagnetic material comprises from about 13 weight percent to about 30 weight percent of the 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 the iron oxide powder.

3. The oral care implement ( 10 ) 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.

4. The oral care implement ( 10 ) of claim 1 , wherein the magnetic and/or ferromagnetic material comprises about 27.5 weight percent of the amorphous thermoplastic resin, about 17 weight percent of aluminum oxide, about 51 weight percent of the iron oxide powder, and about 4.5% glass fiber,
wherein the head comprises at least one tooth cleaning element that is fixed to the head.

5. The oral care implement ( 10 ) of claim 4 , wherein the amorphous thermoplastic resin comprises about 17% weight percent styrene acrylonitrile, and 10.5 weight percent of a mixture comprising polybutylene terephthalate and polyethylene terephthalate.

6. The oral care implement ( 10 ) of claim 1 , wherein the oral care implement ( 10 ) is a manual toothbrush ( 10 ).

7. The oral care implement ( 10 ) of claim 1 , wherein the handle ( 12 ) is formed of at least two different parts ( 12 , 16 , 18 ) made of different materials.

8. The oral care implement ( 10 ) of claim 1 , wherein the amorphous thermoplastic resin comprises at least one of styrene acrylonitrile, polybutylene terephthalate, and polyethylene terephthalate.

9. The oral care implement ( 10 ) of claim 1 , wherein the amorphous thermoplastic resin comprises styrene acrylonitrile, polybutylene terephthalate, and polyethylene terephthalate.

10. The oral care implement ( 10 ) of claim 1 , wherein the amorphous thermoplastic resin comprises styrene acrylonitrile.

11. The oral care implement ( 10 ) of claim 1 , wherein the amorphous thermoplastic resin comprises polybutylene terephthalate.

12. The oral care implement ( 10 ) of claim 1 , wherein the amorphous thermoplastic resin comprises polyethylene terephthalate.

13. The oral care implement ( 10 ) of claim 1 , wherein the magnetic and/or ferromagnetic material comprises from about 45 weight percent to about 67 weight percent of the iron oxide powder.

14. A kit ( 22 ) comprising the oral care implement ( 10 ) of claim 1 and a magnetic holder ( 24 ) for attaching and holding the oral care implement ( 10 ).

15. A method for manufacturing an oral care implement ( 10 ) of claim 1 , the method comprising steps:
providing an amorphous thermoplastic resin;
providing aluminum oxide, boron nitride or aluminum silicate;
providing iron oxide powder;
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 ( 12 ) or part of a handle ( 12 );
providing a non-magnetic and/or non-ferromagnetic material; and
molding the non-magnetic and/or non-ferromagnetic material into a head ( 14 ) or part of a head ( 14 ).

16. The method of claim 15 , wherein the amorphous thermoplastic resin comprises at least one of styrene acrylonitrile, polybutylene terephthalate and polyethylene terephthalate.

17. The method of claim 15 , wherein at least a portion of the amorphous thermoplastic resin is blended with glass fiber.

18. The method of claim 15 , 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 powder is provided in a range from about 45 weight percent to about 67 weight percent.

19. The method of claim 15 , comprising a step of electroplating the handle ( 12 ) with a thermoplastic elastomer or a polypropylene material.

20. The method of claim 15 , wherein the head ( 14 ) and/or handle ( 12 ) is molded by injection or extrusion molding.

Assignees

• Gillette Co Llc

Inventors

• Görich Gerald
• Morgott Markus
• Jungnickel Uwe

Classifications

• B29L2031/425

  Toothbrush · CPC title

• B29C45/14385

  Coating a portion of a bundle of inserts, e.g. making brushes · CPC title

• A46B9/04

  {Arranged like in or} for toothbrushes · CPC title

• A46B5/0095 Primary

  Removable or interchangeable brush heads · CPC title

• A46B5/02

  specially shaped for holding by the hand · CPC title