Brush, in particular toothbrush, and associated production method

Patent metadata

Field	Value
Publication number	US-9538837-B2
Application number	US-201414458710-A
Country	US
Kind code	B2
Filing date	Aug 13, 2014
Priority date	Sep 22, 2004
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A toothbrush, comprising a head part with a cleaning structure that comprises bristles, a hand part and a neck part, a cavity comprising at least one outlet opening for an active substance being located in the head or neck part. In one embodiment, the cavity incorporates an active substance element, which contains the active substance in a carrier material and releases said substance in a controlled manner when it comes into contact with water. In another embodiment, the cavity is adapted to the shape of an active substance element by means of defined external contours. The volume of the cavity is preferably 1-2 times and no more than 4 times greater than the volume of the active substance element, ensuring that the latter is preferably surrounded by water during use. This allows the active substance to be effectively metered and ensures that the brush is easy to use.

First claim

The invention claimed is:

1. A toothbrush comprising:
a head part made from a hard material component and a soft material component, the head part including:
a cavity or a recess accommodating a dissolved active substance including: (i) flavoring agents, (ii) antibacterial active substances, or (iii) abrasive active substances, the cavity or recess having at least one outlet opening allowing the dissolved active substance to exit the cavity or recess, the at least one outlet opening being located on a rear side of the head part in an area having a soft material structure, and
a cleaning structure having bristles on a front side of the head part,

a handle part, and
a neck part.

2. The toothbrush as claimed in claim 1 , wherein the soft material structure comprises massaging or cleaning elements for invigorating or cleaning the gums, oral cavity or tongue.

3. The toothbrush as claimed in claim 2 , wherein the massaging or cleaning elements are produced along with the soft material structure in one operating step and from the same material.

4. The toothbrush as claimed in claim 1 , wherein the soft material structure is formed as a flexible membrane.

5. The toothbrush as claimed in claim 4 , wherein the flexible membrane is bound to the hard material component of the brush head by multi-component injection molding.

6. The toothbrush as claimed in claim 4 , wherein the flexible membrane has a thickness between 3 mm to 0.7 mm.

7. The toothbrush as claimed in claim 4 , wherein the cavity is at least partially delimited by the flexible membrane which curves at least partially outward.

8. The toothbrush as claimed in claim 4 , wherein the flexible membrane comprises in the area of the at least one outlet opening a flat perforated structure, a concertina-like structure, a lamella-like structure or a knob-like structure.

9. The toothbrush as claimed in claim 1 , wherein the soft material structure comprises elevated outlet openings.

10. The toothbrush as claimed in claim 1 , wherein the soft material structure comprises knob-like outlet openings.

11. The toothbrush as claimed in claim 1 , wherein the soft material structure comprises funnel-like outlet openings.

12. The toothbrush as claimed in claim 1 , wherein the dissolved active substance element contains hydrated silica as the active substance.

13. The toothbrush as claimed in claim 1 , wherein the soft material component has a Shore A hardness of less than 70.

14. The toothbrush as claimed in claim 1 , wherein the cavity or the recess is defined by a rear half of the head part, being integrally formed with the handle part comprising a hard material and by a bristle carrying head plate.

15. The toothbrush as claimed in claim 1 , wherein the cavity or the recess is defined by a front half of the head part being integrally formed with the handle part comprising a hard material and being provided with bristles and by a cover being provided on the rear face of the head part.

16. The toothbrush as claimed in claim 1 , wherein the hard material component comprises a hard plastics material including polypropylene (PP).

17. A toothbrush comprising:
a head part made from a hard material component and a soft material component, the head part including:
a cavity or a recess accommodating a dissolved active substance including: (i) flavoring agents, (ii) antibacterial active substances, or (iii) abrasive active substances, the cavity or recess including at least one outlet opening allowing the dissolved active substance to exit the cavity or recess, the at least one outlet opening being located on a front side of the head part in an area comprising a soft material structure; and
a cleaning structure including bristles on the front side of the head part,

a handle part, and
a neck part.

18. The toothbrush as claimed in claim 17 , wherein the soft material structure comprises massaging or cleaning elements for invigorating or cleaning the gums, oral cavity or tongue.

19. The toothbrush as claimed in claim 18 , wherein the massaging or cleaning elements are produced along with the soft material structure in one operating step and from the same material.

20. The toothbrush as claimed in claim 17 , wherein the soft material structure is formed as a flexible membrane.

21. The toothbrush as claimed in claim 20 , wherein the flexible membrane is bound to the hard material component of the brush head by means of multi-component injection molding.

22. The toothbrush as claimed in claim 20 , wherein the flexible membrane has a thickness between 3 mm to 0.7 mm.

23. The toothbrush as claimed in claim 20 , wherein the cavity is at least partially delimited by the flexible membrane which curves at least partially outward.

24. The toothbrush as claimed in claim 20 , wherein the flexible membrane comprises in the area of the at least one outlet opening a flat perforated structure, a concertina-like structure, a lamella-like structure or a knob-like structure.

25. The toothbrush as claimed in claim 17 , wherein the soft material structure comprises elevated outlet openings.

26. The toothbrush as claimed in claim 17 , wherein the soft material structure comprises knob-like outlet openings.

27. The toothbrush as claimed in claim 17 , wherein the soft material structure comprises funnel-like outlet openings.

28. The toothbrush as claimed in claim 17 , wherein the dissolved active substance element contains hydrated silica as the active substance.

29. The toothbrush as claimed in claim 17 , wherein the soft material component has a Shore A hardness of less than 70.

30. The toothbrush as claimed in claim 17 , wherein the cavity or the recess is defined by a rear half of the head part, being integrally formed with the handle part comprising a hard material and by a bristle carrying head plate.

31. The toothbrush as claimed in claim 17 , wherein the cavity or the recess is defined by a front half of the head part being integrally formed with the handle part comprising a hard material and being provided with bristles and by a cover being provided on the rear face of the head part.

32. The toothbrush as claimed in claim 17 , wherein the hard material component comprises a hard plastics material including polypropylene (PP).

33. The toothbrush as claimed in claim 17 , wherein a wall area of the cavity is made from the soft material component and forms a flexible zone.

34. The toothbrush as claimed in claim 17 , wherein the soft material component forms a flexible zone which interconnects separate parts of the brush head.

35. The toothbrush as claimed in claim 34 , wherein the flexible zone comprises webs which interconnect the separate parts of the brush head.

36. The toothbrush as claimed in claim 35 , wherein pliable cleaning elements are arranged on the webs.

37. The toothbrush as claimed in claim 35 , wherein the at least one outlet opening is arranged between the webs.

38. A toothbrush comprising
a head part made from a hard material component and a soft material component, the head part including:
a cavity or a recess accommodating a dissolved active substance including: (i) flavoring agents, (ii) antibacterial active substances, or (iii)

Assignees

• Trisa Holding Ag

Inventors

• Bartschi Armin
• Gross Peter

Classifications

• A46B2200/1066

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

• A46B11/0041

  Flexible or deformable reservoirs, e.g. resilient bulbs, compressible tubes · CPC title

• A46B11/0068 Primary

  Brushes where the reservoir is specifically intended for solid substance that dissolves gradually · CPC title

• A46B11/0062

  Brushes where the reservoir is specifically intended for being refilled when empty · CPC title

• A46B15/0091

  Container, e.g. bag or box with a collection of various devices · CPC title