Toothbrush

• US 8,990,996 B2
• Filed: 10/08/2012
• Issued: 03/31/2015
• Est. Priority Date: 08/09/2002
• Status: Expired due to Term

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Waguespack, Kenneth, Moskovich, Robert, Langgner, Tanja, Storz, Joachim, Kuchler, Thomas
• Primary Examiner(s): Carter, Monica
• Assistant Examiner(s): JENNINGS, MICHAEL DEANGILO
• Application Number:
  US13/647,005
• Publication Number:
  US 20130036567A1
• Time in Patent Office: 904 Days
• Field of Search: 151/671, 151/10, 152/01, 152/072
• US Class Current: 15/167.1
• CPC Class Codes: A46B 15/0081 Brushes with a scraper, e.g. tongue scraper
• CPC Class Codes: A46B 2200/1066 Toothbrush for cleaning the teeth or dentures A61C17/16 takes precedence; bristles arrangements for toothbrushes A46B9/04
• CPC Class Codes: A46B 5/0029 Head made of soft plastics, rubber or rubber inserts in plastics matrix
• CPC Class Codes: A46B 5/02 specially shaped for holding by the hand
• CPC Class Codes: A46B 5/021 Grips or handles specially adapted to conform to the hand
• CPC Class Codes: A46B 5/026 Grips or handles having a nonslip section
• CPC Class Codes: A46B 7/06 movably during use , i.e. the normal brushing action causing movement driven brush bodies A46B13/00
• CPC Class Codes: A46B 9/025 the bristles or the tufts being arranged in an angled position relative to each other
• CPC Class Codes: A46B 9/026 where the surface of the brush body or carrier is not in one plane, e.g. not flat A46B9/005 takes precedence
• CPC Class Codes: A46B 9/028 Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
• CPC Class Codes: A46B 9/04 Arranged like in or for toothbrushes

Abstract

A toothbrush that enhances cleaning and user comfort while brushing. In one embodiment, the toothbrush comprises a cleaning element support member, or base member, that permits a head of the toothbrush to be comfortably received and manipulated within the user'"'"'s mouth. In an embodiment, the support member comprises a head support having an overhanging portion and a portion free of an overhang.

Claims

1. A toothbrush comprising:

a head extending along a longitudinal axis from a first end proximate a neck to a second free end distal the neck, the head comprising a base;

a cleaning, element support member comprising a stem located on the longitudinal axis extending from the base and a support head, the stem comprising a first portion and a second portion, the support head having an outer peripheral edge comprising as first portion that overhangs the second portion of the stem and a second portion that is free of an overhang relative to the first portion of the stem;

the first portion of the stem, the second portion of the outer peripheral edge of the support head, and a portion of an outer surface of the base forming a continuous surface at the second free end of the head;

a gap formed between an undersurface of the support head and the base, the support head having an overhanging portion that extends from the second portion of the stem in a cantilevered manner toward the first end of the head, the overhanging portion of the support head capable of deflecting into the gap in a direction toward said base; and

tooth cleaning elements extending from the support head of the cleaning element support member.

2. The toothbrush of claim 1 wherein the support head has a greater width than the stem.

3. The toothbrush of claim 1 wherein the continuous surface at the second free end of the head comprises a convex curve.

4. The toothbrush of claim 1 wherein the gap extends transversely the entire width of the head.

5. The toothbrush of claim 1 wherein the overhanging portion extends a first distance from the stem and the undersurface of the support head is separated from the base by a second distance via the gap, the first distance being greater than the second distance.

6. The toothbrush of claim 5 wherein the overhanging portion comprises the undersurface.

7. The toothbrush of claim 1 wherein said tooth cleaning elements are positioned on the support head so that a first axis that is substantially normal to said longitudinal axis of said head intersects said gap and a point on a top surface of the support head from which at least one of said tooth cleaning elements extends.

8. The toothbrush of claim 1 wherein the support head comprises a carrier plate formed of a hard plastic.

9. The toothbrush of claim 8 wherein the hard plastic comprises polypropylene.

10. The toothbrush of claim 8 wherein the tooth cleaning elements comprise bristle tufts that are anchored to the carrier plate via anchor free tufting.

11. The toothbrush of claim 1 wherein the overhanging portion terminates in a free end.

12. The toothbrush of claim 1 further comprising:

the support head having a greater width than the stem;

the continuous surface at the second free end of the head comprising a convex curve;

the overhanging portion extending a first distance from the stem and the undersurface of the support head separated from the base by a second distance via the gap, the first distance being greater than the second distance; and

the tooth cleaning elements positioned on the support head so that a first axis that is substantially normal to said longitudinal axis of said head intersects said gap and a point on a top surface of the cleaning element support member from which at least one of said tooth cleaning elements extends; and

the support head comprises a carrier plate formed of a hard plastic, the tooth cleaning elements comprising bristle tufts that are anchored to the carrier plate via anchor free tufting.

13. A toothbrush comprising:

a handle;

a head extending along a longitudinal axis from a proximal end connected to the hand to a free distal end, the head comprising a base;

a cleaning element support member extending from the base and comprising a stem located on the longitudinal axis and a support head having an outer peripheral edge, the stem comprising a first portion and a second portion, a first portion of the outer peripheral edge of the support head overhanging the second portion of the stem and a second portion of the outer peripheral edge of the support head free of an overhang relative to the first portion of the stem;

the first portion of the stem, the second portion of the outer peripheral edge of the support head, and a portion of an outer surface of the base forming a continuous surface at the free distal end of the head;

the support head having an overhanging portion that extends from the second portion of the stem in a cantilevered manner toward the roxirnal end of the head; and

tooth cleaning elements extending from the support head of the cleaning element support member.

14. The toothbrush of claim 13 wherein the support head is spaced a distance from the base, the distance forming a gap between an undersurface of the overhanging portion of the support head and the base, and wherein the support head is capable of deflecting into the gap in the direction of the base.

15. The toothbrush of claim 13 wherein the overhanging portion extends a first distance from the stem and the undersurface of the support head is separated from the base by a second distance via the gap, the first distance being greater than the second distance.

16. A toothbrush comprising:

a handle;

a head extending along a longitudinal axis from a proximal end connected to the handle to a free distal end, the head comprising a base;

a cleaning element support member extending from the base and comprising a support head, the support head comprising an outer peripheral edge and an overhanging portion;

a portion of the outer peripheral edge of the support head and a portion of an outer surface of the base forming a continuous surface at the free distal end of the head, the continuous surface located on the longitudinal axis;

a gap formed between an undersurface of the overhanging portion of the support head and the base, the overhanging portion capable of deflecting into the gap in the direction of said base, the overhanging portion of the support head extending in a cantilevered manner toward the proximal end of the head; and

tooth cleaning elements extending from the support head of the cleaning element support member.

17. The toothbrush of claim 16 wherein the cleaning element support member comprises a stem extending from the base, the stem located on the longitudinal axis.

18. The toothbrush of claim 17 wherein the overhanging portion of the support head extends a first distance from the stem, the undersurface of the overhanging portion separated from the base by a second distance via the gap, the first distance being greater than the second distance.

19. The toothbrush of claim 18 wherein the support head has a greater transverse width than the stem.

20. The toothbrush of claim 17 wherein the tooth cleaning elements are positioned on the support head so that:

(1) a first axis that is substantially normal to said longitudinal axis of said head intersects said gap and a point on a top surface of the support head from which at least one of said tooth cleaning elements extends; and

(2) a second axis that is substantially nonnal to said longitudinal axis of said head intersects said stem and a point on a top surface of the support bead from which at least one of said tooth cleaning elements extends.

21. A toothbrush comprising:

a handle;

a head connected to said handle and extending along a longitudinal axis from a proximal end to a. distal end, the head having;

a body portion;

a base member at the distal end of the head and protruding outwardly from a front surface of the body portion, the base member being substantially non-movable relative to the body portion and comprising at least one outwardly extending tooth cleaning element;

a plurality of pods, each of the plurality of pods comprising at least one outwardly extending cleaning element, each of the plurality of pods movable relative to the body portion and resilient so that the at least one cleaning element of said plurality of pods is movable from an initial position and being returnable to said initial position;

a channel separating adjacent ones of the plurality of pods so that each of the plurality of pods can move independent of one another;

wherein a first portion of the base member forms a smooth continuous surface with a portion of a peripheral surface of the body portion, the smooth continuous surface located on the lonitudinal axis at the distal end of the head; and

wherein the base member comprises an overhanging portion opposite the first portion that extends in cantilevered manner toward the proximal end of the head.

22. The toothbrush of claim 21 wherein the channel extends transversely.

23. The toothbrush of claim 21 wherein the body portion and the base are formed of a hard plastic material,

24. The toothbrush of claim 21 wherein each of the plurality of pods comprises a plate spaced from the body portion and to which the at least one cleaning element of said plurality of pods is mounted.

25. The toothbrush claim 24 wherein the plate is formed of a hard plastic.

26. The toothbrush of claim 21 wherein the plurality of pods are a unitary subassembly coupled to a remaining portion of the head.

27. The toothbrush of claim 21 further comprising a second base member protruding outwardly from the font surface of the body portion, the second base being substantially non-movable relative to the body portion and comprising at least one outwardly extending tooth cleaning element, the second base member located on the longitudinal axis.