Toothbrush

Patent metadata

Field	Value
Publication number	US-12220049-B2
Application number	US-201917419112-A
Country	US
Kind code	B2
Filing date	Dec 24, 2019
Priority date	Dec 27, 2018
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A toothbrush including a main body with a grip part as well as a brush head which forms a bristle field with a plurality of care bristles.

First claim

The invention claimed is:

1. A toothbrush comprising a main body with a grip part and a brush head which forms a bristle field with a plurality of care bristles, wherein
the brush head comprises a brush head body made of plastic for receiving the care bristles,
the brush head body forms a receiver for receiving a connection section of the main body,
the main body consists of wood and at a brush-head-side end section forms the connection section, via which the brush head body is connected to the main body by establishing a positive and/or non-positive connection,
at least one engagement element of the brush head body engages into at least one engagement deepening on the connection section, and
the at least one engagement element is formed by at least one surface section of a bristle hole base.

2. The toothbrush according to claim 1 , wherein the brush head body forms at least one bristle hole which receives at least one care bristle.

3. The toothbrush according to claim 2 , wherein the at least one bristle hole is designed as a blind hole and comprises a bristle hole base.

4. The toothbrush according to claim 1 , wherein the brush head body and the connection section of the main body each comprise a positive-fit geometry via which a positive connection is formed between the brush head body and the connection section.

5. The toothbrush according to claim 4 , wherein the positive-fit geometry is a latching geometry.

6. The toothbrush according to claim 5 , wherein the positive-fit geometries comprise saw-tooth structures which mesh into one another.

7. The toothbrush according to claim 4 , wherein the positive-fit geometries each comprise deepenings and/or prominences which engage into one another.

8. The toothbrush according to claim 1 , wherein the brush head body is designed as a separate component which is connected to the main body by a separate joining step.

9. The toothbrush according to claim 1 , wherein a positive-fit geometry, with at least one prominence and/or deepening is formed in the receiver.

10. The toothbrush according to claim 1 , wherein the brush head body is designed in a manner removable from the main body or from the connection section of the main body.

11. The toothbrush according to claim 10 , wherein the brush head body comprises a detachment element, for pulling off the brush head body from the main body or from the connection section of the main body.

12. The toothbrush according to claim 11 , wherein the detachment element forms a wall section of the receiver.

13. The toothbrush according to claim 1 , wherein the brush head body is designed as an exchangeable head and is releasably connected to the main body.

14. The toothbrush according to claim 1 , wherein the brush head body is press-fit stemmed to the connection section.

15. The toothbrush according to claim 1 , wherein the at least one engagement element is designed in a lobe-like manner.

16. The toothbrush according to claim 15 , wherein the at least one engagement element projects into the engagement deepening at an angle of more than 0° and less than 90° relative to the surface of the connection section, into which surface the engagement deepening is recessed.

17. The toothbrush according to claim 1 , wherein the at least one engagement element which projects into the at least one engagement deepening in the connection section is directed with a free end towards a brush head end.

18. The toothbrush according to claim 1 , wherein the brush head body is injected onto the main body.

19. The toothbrush according to claim 1 , wherein the front side and the rear side of the grip part of the main body comprise a profiling.

Assignees

• Trisa Holding Ag

Inventors

• Fischer Herbert
• Stolz Thomas Gabriel

Classifications

• A46B5/021

  Grips or handles specially adapted to conform to the hand · CPC title

• A46B7/04

  interchangeably {removable bristle carriers} · CPC title

• A46B7/044

  Sliding connections for bristle carriers · CPC title

• A46B5/0095

  Removable or interchangeable brush heads · CPC title

• A46B2200/1066

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