Teledyne Industries, Inc.

Adam B Craft

Andrew Serbinski

James E Dvorsky

Nagabhusan Senapati

Thomas W Graves

Matthew S Zelinski

Keith E Schleiffer

Ronald B Gray, Iii

A brush-head assembly for a motor driven toothbrush including an elongated handle housing a motor with a primary drive shaft extending outwardly from one end of the handle, said assembly comprising a housing sleeve attachable at one end to said handle, said sleeve having a second end defining an inner cylindrical bearing surface and an annular end surface, a brush head including a shaft journaled in said second sleeve end and defining an outer cylindrical bearing surface juxtaposed with said inner cylindrical bearing surface and an annular shoulder juxtaposed with said annular end surface of said sleeve, and a soft resilient annular bushing positioned between said brush head shoulder and said sleeve end surface.

Brush head assembly for motor powered toothbrush

Handle for an electric toothbrush

An electric oscillating tool, having particular but not necessarily exclusive utility as an electric toothbrush, for driving a brush head assembly or end effector with a resonant mechanism at high frequencies. The electric toothbrush includes handle housing, an electromagnetic motor mounted in the housing, and a mechanical oscillator acted upon by the motor. One end of the mechanical oscillator extends outwardly through an opening in the handle housing while the other end is attached to the housing inside the chamber. The end effector/brush head assembly attaches to the extending end of the mechanical oscillator. A power source supplies an alternating current drive signal to the motor, in turn causing the armature and the mechanical oscillator to oscillate and drive the brush head assembly. Control circuitry senses the frequency of oscillation of the mechanical oscillator and controls the frequency of the drive signal to maintain the mechanical oscillator at resonance under the variety of loads imposed during use.

High frequency electric toothbrush

Handle for electric toothbrush

Growing community of inventors

Fort Collins, CO, United States of America

Adam B Craft