Light-emitting oral care implement

Patent metadata

Field	Value
Publication number	US-10820686-B2
Application number	US-201514627102-A
Country	US
Kind code	B2
Filing date	Feb 20, 2015
Priority date	Nov 14, 2005
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An oral care implement comprises a head with a plurality of cleaning elements, the head comprising a chamber. The oral care implement may include a reflective or refractive membrane positioned within the chamber. A light source may also be positioned within the chamber such that light from the light source is directed at the reflective or refractive membrane. The oral care implement may also include a head plate with a plurality of tooth cleaning elements coupled thereto, the head plate positioned over the chamber. The light from the light source may be emitted through the head plate. In some embodiments the oral care implement may be a toothbrush. In other embodiments the oral care implement may be non-toothbrush type implements that include a body forming a chamber within which the lighting components are positioned.

First claim

What is claimed is:

1. A light-emitting oral care implement comprising:
a head and a handle, the head further comprising a chamber defining a hollow cavity having a floor and an open top end;
a reflective or refractive membrane covering at least a portion of the floor;
a plurality of cleaning elements secured to a plate, the plate coupled to the head and closing the open top end of the chamber, wherein a void exists between the plate and the floor of the chamber, the cleaning elements extending outwardly from a first side of the head;
a light source positioned within the chamber such that light from the light source is emitted through the plate, wherein the first side of the head extends from a proximal end adjacent the handle to a distal end along an axis, and wherein no plane that is perpendicular to the axis and to the first side of the head intersects one of the cleaning elements and the light source.

2. The light-emitting oral care implement of claim 1 wherein the light from the light source emits in a direction towards the distal end of the head, the light being redirected by the reflective or refractive membrane to emit through the plate.

3. The light-emitting oral care implement of claim 1 wherein the plate is separately formed from the head, and the plate is coupled to the head by ultrasonic welding.

4. The light-emitting oral care implement of claim 3 wherein a front surface of the plate is substantially flush with a front surface of the head.

5. The light-emitting oral care implement of claim 1 wherein the head is separately formed from the handle, and the head and the handle are joined by a threaded connection.

6. The light-emitting oral care implement of claim 1 , further comprising at least one opening in the plate, the opening defining a light passage between the chamber and outside thereof.

7. The light-emitting oral care implement of claim 6 , wherein the plate is formed of a light transmissive material.

8. The light-emitting oral care implement of claim 1 wherein the plate comprises a region that is devoid of cleaning elements, and wherein the light from the light source is emitted through the region of the plate.

9. The light-emitting oral care implement of claim 1 , wherein the cleaning elements are secured to the plate via anchor-free tufting, and wherein the plate is welded to the head.

10. The light-emitting oral care implement of claim 1 , wherein the reflective or refractive membrane covers an entirety of the floor of the chamber.

11. The light-emitting oral care implement of claim 1 further comprising a vertical wall extending upwardly from the floor of the chamber that defines a nesting cavity within the chamber, and wherein the reflective or refractive membrane is positioned within the nesting cavity.

12. The light-emitting oral care implement of claim 11 wherein the reflective or refractive membrane is in contact with the vertical wall.

13. The light-emitting oral care implement of claim 1 wherein the head has a first lateral side and a second opposite lateral side, and wherein the light source is located within the chamber in a neck region such that no plane extending between the first and second lateral sides of the head transverse to the first side of the head intersects both the light source and at least one of the plurality of cleaning elements.

14. The light-emitting oral care implement of claim 1 wherein the plurality of cleaning elements define a bristle field that is axially bounded by a distal-most and proximal-most cleaning element, and wherein the light source is located within the chamber in a location that is offset from the bristle field.

15. A light-emitting oral care implement comprising:
a head and a handle, the head further comprising a chamber defining a hollow cavity having a floor and an open top end;
a reflective or refractive membrane covering at least a portion of the floor;
a plurality of cleaning elements secured to a plate, the plate coupled to the head and closing the open top end of the chamber, the cleaning elements extending outwardly from a first side of the head; and
a light source positioned within the chamber such that light from the light source is emitted through the plate.

16. The light-emitting oral care implement of claim 15 wherein the chamber comprises a hollow cavity between the floor of the reflective or refractive membrane and an inner surface of the plate.

17. The light-emitting oral care implement of claim 15 further comprising a vertical wall extending upwardly from the floor of the chamber that defines a nesting cavity within the chamber, and wherein the reflective or refractive membrane is positioned within the nesting cavity.

18. A light-emitting oral care implement comprising:
a head comprising a chamber having a floor, the chamber defining a hollow cavity;
a handle having a shoulder and a stem protruding beyond the shoulder, the head being detachably coupled to the handle;
a reflective or refractive membrane covering at least a portion of the floor, the reflective or refractive membrane contained within the chamber;
a plurality of cleaning elements secured to a plate, the plate positioned over the chamber and coupled to the head, the cleaning elements extending outwardly from a first side of the head; and
a light source positioned at a distal end of the stem and within the chamber such that light from the light source is emitted through the plate.

Assignees

• Colgate Palmolive Co

Inventors

• Russell Bruce M
• Kemp James H

Classifications

• A61C17/14

  Dental appliances for receiving spittle, with or without rinsing means therefor, e.g. dental basins, spittoons, cuspidors · CPC title

• A61C17/22

  with brushes, cushions, cups, or the like (brush bodies, e.g. arrangements of the bristles A46B) · CPC title

• A46B15/00 Primary

  Other brushes; Brushes with additional arrangements · CPC title

• A46B2200/1066

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

• A46B15/0044

  with light signalling means (A46B15/0034, A46B15/0036 takes precedence) · CPC title