Dentsply Research & Development Corp.

The Boeing Company

Robert F Hecht

Peter H Werner

Joseph K Scharrer

Allen G Hoube

Horacio R Cabana

James G Mosch

The invention provides an ultrasonic scaler, comprising: a scaler tip, actuator material, a coil, a hand-piece housing, and an air driven electrical current generator. The actuator material, the coil and the air driven electrical current generator are enclosed by the hand-piece housing. The scaler tip is connected to the actuator material. Preferably the actuator material is &lsqb;Tb Dy Fe &rsqb;. The invention provides an ultrasonic scaler including a scaler tip, actuator material, a coil, a hand-piece housing, and a frequency control circuit. The actuator material, the coil and the frequency control circuit are enclosed by the hand-piece housing. The scaler tip is connected to the actuator material.

Ultrasonic scaler

A method of lighting a scaling tip including providing a light source electrically connected to a secondary coil, and providing a scaling tip having an arm extending into a primary coil and adapted to be ultrasonically vibrated by the primary coil.

Ultrasonic dental insert and handpiece having a light source

An orifice compensated hydrostatic bearings wherein a roughened surface area retards the hydrostatic fluid flow exiting the hydrostatic bearing reducing the whirl frequency ratio while increasing the bearing stiffness and life.

Growing community of inventors

Baltimore, MD, United States of America

Robert F Hecht