Brush section for an electric toothbrush
First Claim
1. A brush section for an electric toothbrush, comprising:
- a mounting tube;
a shaft within said mounting tube and rotary about a longitudinal axis;
a bristle carrier having a brush axis and bristles extending therefrom and being rotary about a transverse axis and coupled to said shaft; and
a coupling mechanism connecting said bristle carrier to the shaft and which converts a rotational motion of the shaft about the longitudinal axis to a motion of the bristle carrier (11) and the brush axis relative to the transverse axis, whereby the motion of the brush axis of the bristle carrier occurs essentially on an envelope of a cone.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention is directed to a brush section (1) for an electric toothbrush which includes a mounting tube (2) in which a shaft (7) rotary about a longitudinal axis (3) is received. Further, the brush section (1) includes a bristle carrier (11) from which bristles (15) extend in the direction of a brush axis (14). The bristle carrier (11) is rotary about a transverse axis (19) by means of a bearing pin (21). By means of in particular a tapered disk (24), the brush axis (14) and the transverse axis (19) define between them an angle (28) departing from an apex (29). In operation of the electric toothbrush, the bristle carrier (11) performs a nutating motion about the transverse axis (19). This effects a revolving approaching/receding motion of the free ends of the bristles (15) resulting in an improved cleaning action on a user'"'"'s teeth.
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Citations
29 Claims
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1. A brush section for an electric toothbrush, comprising:
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a mounting tube; a shaft within said mounting tube and rotary about a longitudinal axis; a bristle carrier having a brush axis and bristles extending therefrom and being rotary about a transverse axis and coupled to said shaft; and a coupling mechanism connecting said bristle carrier to the shaft and which converts a rotational motion of the shaft about the longitudinal axis to a motion of the bristle carrier (11) and the brush axis relative to the transverse axis, whereby the motion of the brush axis of the bristle carrier occurs essentially on an envelope of a cone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification