Twin-headed toothbrush

Details Twin-headed toothbrush Twin-headed toothbrush

2008-04-29

2008-04-29

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

C073S862041, C073S862042, C073S862043, C015S105000

Reexamination Certificate

active

11179310

ABSTRACT:
A toothbrush includes: a handle shaped and dimensioned to be grasped by a human hand; necks coupled to the handle; bristle supports coupled to the necks; and bristles coupled to the bristle supports. The toothbrush, through the bristles coupled to the bristle supports and the necks, is configured to adapt to a dento-gingival junction and all other changing surfaces encountered during brushing to disrupt plaque. The necks provide (i) resistance above 0.35 kilograms of brushing pressure force and (ii) resiliency below 3.77 kilograms of brushing pressure force. The bristles, the necks, and the bristle supports, in combination, provide (i) resistance above 0.55 kilograms of brushing pressure force and (ii) resiliency below 3.89 kilograms of brushing pressure force.

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