Brushing – scrubbing – and general cleaning – Machines – Brushing
Reexamination Certificate
2008-02-25
2010-12-14
Spisich, Mark (Department: 3727)
Brushing, scrubbing, and general cleaning
Machines
Brushing
C015S176100, C433S119000
Reexamination Certificate
active
07849548
ABSTRACT:
An ultrasonic toothbrush for daily oral hygiene application is disclosed, having an ultrasound transducer in direct contact with the fluids in the oral cavity, without ultrasound energy attenuation between the transducer and the fluids in the oral cavity. Maximum level of ultrasound energy coupled to the fluids within the oral cavity and to the teeth and gums and periodontal pockets, achieving maximum loosening of soft plaque. Toothbrush configurations of ultrasonically enhanced manually operated toothbrushes and motorized toothbrushes having lateral direction sonic frequency vibrating brush heads emitting ultrasonic energy are disclosed. To generate the sonic frequency lateral vibration of the brush head, a motion transducer is utilized. Removable and user replaceable brush heads are described. In the various configurations low voltage DC energy supplied by a battery is converted to ultrasonic frequency DC current to activate the ultrasonic transducer. All configurations are utilizing bristle tufts to effectively dislodge plaque loosened by the ultrasonic waves from the surfaces of teeth and gums.
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