1
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 ...


2
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 ...


3
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 ...


4
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 ...


5
Harvey B Foulkes, George E Warrin, Huy Can Dao, Rene Perdreaux: Transducer activated tool tip. Dentsply Research & Development, James B Bieber, Dale R Lovercheck, July 2, 1996: US05531597 (39 worldwide citation)

A transducer activated tool for contacting workpiece surfaces and directing fluid adjacent to said surfaces is disclosed. The tool may be ultrasonically activated by attachment to an insert that includes a magnetostrictive element. The tip includes distal surfaces shaped to contact the workpiece and ...


6
Richard H Paschke, Marty I Septimus, George E Warrin, Michael P Parr: Sterilizable dental medical handpiece containing electric coil. Dentsply Research & Development, James B Bieber, Edward J Hanson Jr, March 7, 1995: US05395240 (24 worldwide citation)

An ultrasonic handpiece wherein the entire assembled handpiece may be sterilized with an ingress of the sterilizing fluid into the interior of the handpiece. The handpiece is formed with an elongated housing sleeve and a coil unit for establishing an alternating magnetic field located therein. The h ...


7
George E Warrin: Tool holder for ultrasonic endodontic apparatus. Dentsply Research & Development, Vorys Sater Seymour & Pease, July 28, 1987: US04682949 (19 worldwide citation)

A tool holder preferably for an ultrasonic endodontic apparatus includes an eccentric member in the holder to secure the butt end of a tool thereon by a camming action during limited rotation of a cam member. The tool holder also includes an irrigating fluid passage located proximate to, but remote ...


8
George E Warrin: Dental cleaning system. Cooper LaserSonics, Thomas R Boland, December 11, 1984: US04487582 (18 worldwide citation)

Soluble abrasive cleaning powder fed from a fluid-tight chamber and entrained in a stream of air is directed against a tooth surface to be cleaned from a manually controlled handpiece. The handpiece includes an improved air supply and control system having a first conduit for supplying air under pre ...


9
Harvey B Foulkes, George E Warrin, Huy Can Dao, Rene Perdreaux: Transducer activated tool tip. Dentsply Research & Development, James B Bieber, Dale R Lovercheck, October 22, 1996: US05567153 (17 worldwide citation)

A transducer activated tool for contacting workpiece surfaces and directing fluid adjacent to the surfaces is disclosed. The tool may be ultrasonically activated by attachment to an insert that includes a magnetostrictive element. The tip includes distal surfaces shaped to contact the workpiece and ...


10
Gerard Wright, George E Warrin, Richard H Paschke: Spray shield. Dentsply Research & Development, David E Wheeler, Edward J Hanson Jr, July 25, 1989: US04850868 (15 worldwide citation)

The apparatus comprises a tubular member that is adapted to be attached to the working end of a dental handpiece and is used to contain and direct material dispensed from the handpiece in order to reduce the amount of airborne particles emitted into the atmosphere by the handpiece and to accurately ...