Complex motion toothbrush
First Claim
Patent Images
1. An electrically driven toothbrush comprising:
- a handle at a first end of the toothbrush;
a head at a second end of the toothbrush,;
a rotatable shaft extending from the handle to the head and having a first longitudinal central axis;
a first bristle holder mounted with a first pivot or hinge to the head and associated with a remote end of the shaft, the remote end of the shaft being received in a slot of the first bristle holder for driving the first bristle holder in an oscillating movement; and
, a second bristle holder movably mounted to the head and drivingly engaged by a rigidly mounted portion of the first bristle holder.
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Accused Products
Abstract
An electrically driven toothbrush has a rotatable shaft with a remote cam, which fits into a slot in a bristle holder. The holder is mounted for rotation in a toothbrush head. When the shaft rotates the remote end describes a circle and drivingly engages the slot to cause the holder to vibrate in a first brushing motion. A second bristle holder is driven by the first bristle holder, for a complimentary brushing motion. The second bristle holder is driven through and engagement with a pin or cam extending from the first bristle holder.
143 Citations
12 Claims
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1. An electrically driven toothbrush comprising:
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a handle at a first end of the toothbrush;
a head at a second end of the toothbrush,;
a rotatable shaft extending from the handle to the head and having a first longitudinal central axis;
a first bristle holder mounted with a first pivot or hinge to the head and associated with a remote end of the shaft, the remote end of the shaft being received in a slot of the first bristle holder for driving the first bristle holder in an oscillating movement; and
,a second bristle holder movably mounted to the head and drivingly engaged by a rigidly mounted portion of the first bristle holder. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12)
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7. An electric toothbrush comprising:
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a shaft, the shaft including a cam at a remote portion of the shaft;
a motor operative to rotate the shaft;
a first brush section operatively coupled to the cam for being driven in a first motion; and
,a second brush section longitudinally separated from the first brush section and driven in a second motion by a rigid element of the first brush section.
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Specification