Brush section for an electric toothbrush
First Claim
1. A cleaning section for an electrical toothbrush having a motor and a drive shaft, the cleaning section comprising:
- a movable bristle holder structured to receive a drive motion from the motor via a drive mechanism comprising a drive shaft having a longitudinal axis, the drive shaft being structured to oscillate around its longitudinal axis thereby imparting rotation or oscillation to the movable bristle holder; and
a head including a first plurality of cleaning bristles arranged in a static bristle field and a second plurality of cleaning bristles supported within the movable bristle holder to have at least one freedom of motion relative to the first plurality of cleaning bristles,wherein the movable bristle holder is movable with respect to the head and the static bristle field such that a cleaning motion of the second plurality of bristles includes an oscillating movement of the second plurality of cleaning bristles relative to the first plurality of cleaning bristles, and wherein the oscillating movement of the second plurality of bristles is caused by the oscillating movement of the drive shaft.
3 Assignments
0 Petitions
Accused Products
Abstract
A brush section for use with an electric toothbrush includes a relatively large brush head portion having a generally rectangular shape, although oblong, elliptical and other such shapes having a length to width aspect ration greater than 1 may be employed. The brush head portion is secured to a shaft portion of the brush section that may be configured to couple to a handle section. The handle section may include an electric drive including drive shaft, and the drive shaft may couple to the brush head via a coupling member positioned within the shaft portion. The electric drive may impart a rotary, oscillating rotary-oscillating or other suitable drive motion to the drive shaft that is, in turn, imparted upon the brush head by virtue of the coupling member.
45 Citations
21 Claims
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1. A cleaning section for an electrical toothbrush having a motor and a drive shaft, the cleaning section comprising:
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a movable bristle holder structured to receive a drive motion from the motor via a drive mechanism comprising a drive shaft having a longitudinal axis, the drive shaft being structured to oscillate around its longitudinal axis thereby imparting rotation or oscillation to the movable bristle holder; and a head including a first plurality of cleaning bristles arranged in a static bristle field and a second plurality of cleaning bristles supported within the movable bristle holder to have at least one freedom of motion relative to the first plurality of cleaning bristles, wherein the movable bristle holder is movable with respect to the head and the static bristle field such that a cleaning motion of the second plurality of bristles includes an oscillating movement of the second plurality of cleaning bristles relative to the first plurality of cleaning bristles, and wherein the oscillating movement of the second plurality of bristles is caused by the oscillating movement of the drive shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An electric toothbrush comprising:
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a handle section including a motor, the handle section being coupled with a cleaning section, the cleaning section comprising a movable bristle holder structured to receive a drive motion from the motor via a drive mechanism comprising a drive shaft having a longitudinal axis, the drive shaft being structured oscillate around its longitudinal axis; and a head including a first plurality of cleaning bristles arranged in a static bristle field and a second plurality of cleaning bristles supported within the movable bristle holder to have at least one freedom of motion relative to the first plurality of cleaning bristles, wherein the movable bristle holder is movable with respect to the head and the static bristle field such that a cleaning motion of the second plurality of bristles includes an oscillating movement of the second plurality of cleaning bristles relative to the first plurality of cleaning bristles, and wherein the oscillating movement of the second plurality of bristles is caused by the oscillating movement of the drive shaft.
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Specification