Electric toothbrush

• US 5,850,655 A
• Filed: 09/15/1997
• Issued: 12/22/1998
• Est. Priority Date: 03/20/1993
• Status: Expired due to Term

• Current Assignee: Braun GmbH (The Procter & Gamble Company)
• Original Assignee: Braun Aktiengesellschaft
• Inventors: Driesen, Georges, Gocking, Wolfgang, Drossler, Michael
• Primary Examiner(s): Chin, Randall E.
• Application Number:
  US08/929,826
• Time in Patent Office: 463 Days
• Field of Search: 15/4, 15/22.1, 15/22.4, 15/28, 15/29, 15/167.1, 15/DIG. 5
• US Class Current: 15/28
• CPC Class Codes: A61C 17/22 with brushes, cushions, cups, or the like brush bodies, e.g. arrangements of the bristles A46B
• CPC Class Codes: A61C 17/222 Brush body details, e.g. the shape thereof or connection to handle
• CPC Class Codes: A61C 17/3436 Rotation around the axis perpendicular to the plane defined by the bristle holder
• CPC Class Codes: A61C 17/3454 Translation along the axis perpendicular of the axis of toothbrush handle and in the plane defined by the bristle holder
• CPC Class Codes: A61C 17/349 with multiple brush bodies
• CPC Class Codes: Y10S 15/05 Varied length bristle

Abstract

The invention is directed to an electric toothbrush having a brush section and a drive shaft received in the brush section. The brush section includes a first bristle supporting structure operatively coupled to the shaft for motion about an axis essentially perpendicular to a longitudinal axis of the shaft, and a second bristle supporting structure operatively coupled to the shaft for substantially transverse oscillating motion of the entire second bristle supporting structure relative to the longitudinal axis of the shaft. The first bristle supporting structure is generally cylindrically shaped and carries a plurality of bristle clusters.

Claims

1. An electric toothbrush comprising:

a brush section and a drive shaft received in said brush section, said brush section including

a first bristle supporting structure operatively coupled to the shaft for motion about an axis essentially perpendicular to a longitudinal axis of the shaft, said first bristle supporting structure being generally cylindrically shaped and carrying a plurality of bristle clusters, and

a second bristle supporting structure operatively coupled to the shaft for substantially transverse oscillating motion of the entire second bristle supporting structure relative to the longitudinal axis of the shaft.

2. The electric toothbrush as claimed in claim 1 wherein the second bristle supporting structure is arranged at a distance to the first bristle supporting structure such that the second bristle supporting structure cleans interproximally while the first bristle supporting structure cleans outside teeth surfaces.

3. The electric toothbrush as claimed in claim 1 wherein the second bristle supporting structure is arranged at approximately right angles with respect to the shaft.

4. The electric toothbrush as claimed in claim 1 wherein the second bristle supporting structure includes a mount in which at least one bristle cluster is held.

5. The electric toothbrush as claimed in claim 4 wherein the mount is disposed in the immediate vicinity of the first bristle supporting structure.

6. The electric toothbrush as claimed in claim 1 wherein the second bristle supporting structure holds bristles extending approximately in the same direction as the bristle clusters of the first bristle supporting structure.

7. The electric toothbrush as claimed in claim 1 further comprising the second bristle supporting structure holding bristles of greater length than the bristle clusters of the first bristle supporting structure.

8. The electric toothbrush as claimed in claim 1 further comprising means for driving the shaft in an alternating motion.

9. The electric toothbrush as claimed in claim 1 further comprising the second bristle supporting structure carrying a plurality of bristle clusters.

10. The electric toothbrush as claimed in claim 1 wherein the plurality of bristle clusters are arranged in only a single row.

11. The electric toothbrush as claimed in claim 1 wherein the second bristle supporting structure is directly coupled to the shaft.

12. The electric toothbrush as claimed in claim 1 wherein the shaft rotates about the longitudinal axis.

13. An electric toothbrush comprising:

a brush section and a rotatably carried shaft received in said brush section, said brush section including a bristle supporting structure coupled to the shaft for motion about an axis perpendicular to an axis of rotation of the shaft, and

only a single row of interproximal brushes coupled to the shaft.

14. The electric toothbrush as claimed in claim 13 wherein said interproximal brushes are spaced from said bristle supporting structure such that said interproximal brushes clean interproximally while said bristle supporting structure cleans outside teeth surfaces.