Toothbrush
First Claim
Patent Images
1. An electric toothbrush comprisinga graspable housing having a head portion;
- a bristle holder arranged on the head portion of the housing and rotatable about an axis of rotation of the bristle holder, the bristle holder carrying a cluster of bristles; and
a drive mechanism for the bristle holder, includinga motor arranged within the housing, anda transmission member configured to transfer a driving motion from the motor to the bristle holder, the transmission member including a drive rocker arranged to rock in multiple axes and driven by the motor to approximately traverse a double conical path,wherein the drive rocker and the bristle holder are connected in jointed manner that permits a relative tilting between the bristle holder and drive rocker about an articulated axis parallel to the axis of rotation of the bristle holder.
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Accused Products
Abstract
An electric toothbrush having a handpiece, a bristle holder which is arranged on a head portion of the handpiece and is rotatable about an axis of rotation of the bristle holder, and a drive mechanism for the bristle holder. The drive mechanism includes a motor which is arranged on the handpiece, and a transmission member which transfers a driving motion from the motor to the bristle holder. A drive rocker is provided as transmission member, and is arranged to rock in multiple axes and is driven by the motor such that it approximately traverses a double conical path.
65 Citations
20 Claims
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1. An electric toothbrush comprising
a graspable housing having a head portion; -
a bristle holder arranged on the head portion of the housing and rotatable about an axis of rotation of the bristle holder, the bristle holder carrying a cluster of bristles; and a drive mechanism for the bristle holder, including a motor arranged within the housing, and a transmission member configured to transfer a driving motion from the motor to the bristle holder, the transmission member including a drive rocker arranged to rock in multiple axes and driven by the motor to approximately traverse a double conical path, wherein the drive rocker and the bristle holder are connected in jointed manner that permits a relative tilting between the bristle holder and drive rocker about an articulated axis parallel to the axis of rotation of the bristle holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electric toothbrush comprising
a graspable housing having a head portion; -
a bristle holder arranged on the head portion of the housing and rotatable about an axis of rotation of the bristle holder, the bristle holder carrying at least one stationary bristle cluster and one movable bristle cluster; and a drive mechanism for the bristle holder, including a motor arranged within the housing, and a transmission member configured to transfer a driving motion from the motor to the bristle holder, the transmission member including a drive rocker arranged to rock in multiple axes and driven by the motor to approximately traverse a double conical path, wherein the drive rocker and the bristle holder are connected in jointed manner about an articulated axis parallel to the axis of rotation of the bristle holder.
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Specification