1
Rene J Perdreaux Jr: Ultrasonic device and method. Cavitron Corporation, Philip H Pohl, Philip Sperber, May 18, 1976: US03956826 (195 worldwide citation)

An ultrasonic hand-held cleaning device having a housing enclosing a casing, an energyzing winding about the casing, and a fluid conduit attached to the interior of the casing. A sleeve is insertably mounted into the end of the casing, and acts to support a connecting body at a spaced distance withi ...


2
George E Warrin, Rene J Perdreaux, Richard H Paschke, Teodor E Constantinescu, Robert McGill: Single multi-function handpiece for dental instruments. Dentsply Research & Development, David E Wheeler, Edward J Hanson Jr, April 11, 1989: US04820152 (168 worldwide citation)

A single handpiece that can be used in multiple dental treatments is provided. The handpiece comprises a housing having a coil for producing an electromagnetic or electrostrictive field in the housing, and a number of inserts that react with the electromagnetic or electrostrictive field and can be u ...


3
George E Warrin, Rene J Perdreaux: Ultrasonic endodontic dental apparatus. Cavitron, Vorys Sater Seymour & Pease, January 8, 1985: US04492574 (52 worldwide citation)

An ultrasonic endodontic dental handpiece has an elongated housing supporting a coil connected for establishing an alternating magnetic field, the housing having a cooling fluid inlet at one end and being open at the other for receiving and supporting a removable insert. The insert includes an elong ...


4
George E Warrin, Rene J Perdreaux: Apparatus and method for therapeutic lavage and scaling of teeth. Dentsply Management, Dale R Lovercheck, Edward J Hanson Jr, June 30, 1992: US05125837 (48 worldwide citation)

An apparatus for scaling of teeth and lavage of the gingival sulcus is provided. The apparatus comprises a base unit which contains reservoirs for the medicaments used in the lavage procedure, and a handpiece connected to the base unit by a conduit, which contains an insert for scaling of teeth. Swi ...


5
George E Warrin, Rene J Perdreaux: Method of subgingival scaling and lavage. Dentsply Research & Development, Dale R Lovercheck, Edward J Hanson Jr, May 30, 1995: US05419703 (39 worldwide citation)

An insert for use in an apparatus for scaling of teeth and lavage of the gingival sulcus is provided. The insert comprises a tip for scaling and delivery of lavage fluids, retaining means for retaining the scaling tip in the insert, and a path means for delivering irrigant for scaling or for lavage ...


6
Rene J Perdreaux Jr: Ultrasonic device and method. Cavitron Corporation, Robert M Skolnik, William R Evans, March 3, 1981: USRE030536

An ultrasonic hand-held cleaning device having a housing enclosing a casing, an energyzing winding about the casing, and a fluid conduit attached to the interior of the casing. A sleeve is insertably mounted into the end of the casing, and acts to support a connecting body at a spaced distance withi ...