Electric toothbrushes

• US 7,421,753 B2
• Filed: 04/25/2006
• Issued: 09/09/2008
• Est. Priority Date: 03/10/2003
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Kalman, Jeffrey Michael, Chan, John Geoffrey, Brown, Patrick William, Fuchs, Donald Clarence Jr., Jackson, Trevor Leslie, Gall, Douglas Alan, Vitantonio, Mark Louis
• Primary Examiner(s): Spisich; Mark
• Application Number:
  US11/410,808
• Publication Number:
  US 20060185105A1
• Time in Patent Office: 868 Days
• Field of Search: 15/221, 15/222, 15/224, 15/28
• US Class Current: 15/22.1
• CPC Class Codes: A61C 17/3472 with combined movements of the brush body
• CPC Class Codes: A61C 17/349 with multiple brush bodies
• CPC Class Codes: A61C 17/40 orbiting, e.g. nutating

Abstract

An electric toothbrush is provided. The electric toothbrush has an elongated body including a handle, a head, and a neck extending between the handle and the head. A first bristle carrier having a plurality of bristles and a second bristle carrier having a plurality of bristles are disposed on the head and each of the first and second bristle carriers have an opening. An electric motor is operatively connected to a shaft, wherein operation of the electric motor moves the shaft in an orbital motion and wherein the shaft is operatively connected to the first and second bristle carriers to move the first and second bristle carriers.

Claims

1. An electric toothbrush, comprising:

a handle having an electric motor;

a head;

a first bristle carrier having a plurality of bristles and a second bristle carrier having a plurality of bristles, wherein said first and second bristle carriers are disposed on said head;

wherein said first and second bristle carriers are generally transverse to the longitudinal axis of said head;

wherein said electric motor is operatively connected to said first and second bristle carriers;

wherein said first bristle carrier reciprocates in a side-to-side motion transverse to the longitudinal axis of said head, and said second bristle carrier reciprocates in an up-and-down direction transverse to the longitudinal axis of said head generally transverse to the direction of movement of the first bristle carrier; and

wherein a first plurality of static bristles are disposed in between said first and second bristle carriers.

2. The electric toothbrush of claim 1, wherein said electric motor is operatively connected to a shaft, wherein operation of said electric motor moves said shaft in an orbital motion.

3. The electric toothbrush of claim 1, wherein at least one said bristle carrier has elastomeric bristles.

4. The electric toothbrush of claim 1, wherein said static bristles comprise elastomeric bristles.

5. The electric toothbrush of claim 1, wherein at least one said bristle carrier has elastomeric bristles and said static bristles comprise elastomeric bristles.

6. The electric toothbrush of claim 1, wherein a second plurality of static bristles are disposed at a distal-most end of said head.

7. The electric toothbrush of claim 1, wherein said electric motor is operatively connected to a third bristle carrier.

8. The electric toothbrush of claim 1, wherein said first and second bristle carriers are elongated in a direction transverse to the longitudinal axis of said head.

9. An electric toothbrush, comprising:

a handle having an electric motor;

a head;

a first bristle carrier having a plurality of bristles and a second bristle carrier having a plurality of bristles, wherein said first and second bristle carriers are disposed on said head;

wherein said first and second bristle carriers are generally transverse to the longitudinal axis of said head;

wherein said electric motor is operatively connected to said first and second bristle carriers;

wherein the tips of the bristles of said first bristle carrier move in a side-to-side direction generally transverse to the longitudinal axis of said head and the tips of the bristles of said second bristle carrier move in an up-and-down direction generally transverse to the longitudinal axis of said head generally transverse to the direction of movement of the bristle tips of the first bristle carrier; and

wherein static bristles are disposed at a distal-most end of said head.

10. The electric toothbrush of claim 9, wherein said electric motor is operatively connected to a shaft, wherein operation of said electric motor moves said shaft in an orbital motion.

11. The electric toothbrush of claim 9, wherein at least one said bristle carrier has elastomeric bristles and/or said static bristles comprise elastomeric bristles.