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US 5,311,632 AGranted
Ultrasonic plaque removal device
OwnerLeslie T. Centerinventor
Life of this patent
Estimating the term…
Abstract
A device for removing plaque from teeth comprises a toothbrush having a thick, cylindrical, hollow handle in which are located an electric motor actuable to cause rotation of an eccentrically mounted member and vibration of the entire device, and an ultrasonic transducer actuable to produce high frequency sound waves along the brush. The combination of brush vibration and ultrasound loosens and removes plaque from the teeth.
Claims8
An ultrasonic plaque removal device for removing plaque from teeth comprising:
- a) a toothbrush device having a hollow grip portion and a brush portion extending from and being separable from said brush portion, said toothbrush device having a central axis extending through said brush portion and said grip portion;
- b) first means located within said grip portion for creating a rotational vibration of said toothbrush device about said central axis;
- and
- c) second means located within said grip portion connected with and producing an ultrasonic wave within said brush portion.
1 more element
Dependencies are inferred from the claim text.