DAVID GEORGE MURPHY, DDS
Dentist at Garfield Ave, Charlevoix, MI

2006018, Aug 17, 2006

Mar 7, 2006

11/369528

Jerry Browning - Hemet CA, US
David Murphy - Otsego MI, US
Thomas Crooks - Corona Del Mar CA, US
Brian Babson - Fountain Valley CA, US

A61C 1/18

433104000

A disposable dental instrument of the compressed air drive type is disclosed for use in performing dental procedures on a workpiece. The disposable dental instrument is constructed from two mating shells and a core. Each shell incorporates a mating surface and said shells are joined using various bonding methods to ensure a waterproof, high quality dental instrument. An elongated body has conduits penetrating a base at one end of the body. The conduits allow entry of a light beam, a pressurized water stream, and a compressed air stream into the body. The base includes attachment threads for securing the body to a source of the light beam, pressurized water stream, and compressed air stream. Pluralities of passageways are in communication with the conduits for conducting the light beam, the water stream, and the air stream through the body. A head at the opposite end of the body rotatably mounts a turbine shaft on bearing surfaces which inhibit vibration and noise. The turbine shaft includes a turbine impeller and a clamping hole for removable attachment of a dental bur to the shaft. The air stream drives the impeller at a high speed for rotating the bur about a rotational axis. An opening in the body adjacent to the head allows release of the light beam, the pressurized water stream, and a portion of the compressed air stream in a direction toward the distal end of the bur so that the bur, the light beam, the water stream, and the air stream may all converge on the workpiece.

2008009, Apr 17, 2008

Mar 12, 2004

10/548932

Jerry W. Browning - Hemet CA, US
David G. Murphy - Otsego MI, US
Thomas P. Crooks - Corona del Mar CA, US
Brian Babson - Hungtington Beach CA, US

A61C 1/02, A61C 1/05

433104, 433132

A disposable dental instrument of the compressed air drive type is disclosed for use in performing dental procedures on a workpiece. The disposable dental instrument is constructed from two mating shells and a core. Each shell incorporates a mating surface and said shells are joined using various bonding methods to ensure a waterproof, high quality dental instrument. An elongated body has conduits penetrating a base at one end of the body. The conduits allow entry of a light beam, a pressurized water stream, and a compressed air stream into the body. The base includes attachment threads for securing the body to a source of the light beam, pressurized water stream, and compressed air stream. Pluralities of passageways are in communication with the conduits for conducting the light beam, the water stream, and the air stream through the body. A head at the opposite end of the body rotatably mounts a turbine shaft on bearing surfaces which inhibit vibration and noise. The turbine shaft includes a turbine impeller and a clamping hole for removable attachment of a dental bur to the shaft. The air stream drives the impeller at a high speed for rotating the bur about a rotational axis. An opening in the body adjacent to the head allows release of the light beam, the pressurized water stream, and a portion of the compressed air stream in a direction toward the distal end of the bur so that the bur, the light beam, the water stream, and the air stream may all converge on the workpiece.

7008224, Mar 7, 2006

Mar 12, 2004

10/800144

Jerry W. Browning - Hemet CA, US
David G. Murphy - Otsego MI, US
Thomas P. Crooks - Corona Del Mar CA, US
Brian Babson - Fountain Valley CA, US

A61C 1/02, A61C 1/05

433104, 433132

A disposable dental instrument of the compressed air drive type is disclosed for use in performing dental procedures on a workpiece. The disposable dental instrument is constructed from two mating shells and a core. Each shell incorporates a mating surface and the shells are joined using various bonding methods to ensure a waterproof, high quality dental instrument. An elongated body has conduits penetrating a base at one end of the body. The conduits allow entry of a light beam, a pressurized water stream, and a compressed air stream into the body. The base includes attachment threads for securing the body to a source of the light beam, pressurized water stream, and compressed air stream. Pluralities of passageways are in communication with the conduits for conducting the light beam, the water stream, and the air stream through the body. A head at the opposite end of the body rotatably mounts a turbine shaft on bearing surfaces which inhibit vibration and noise. The turbine shaft includes a turbine impeller and a clamping hole for removable attachment of a dental bur to the shaft.

D572822, Jul 8, 2008

Sep 28, 2007

29/295484

Eli Thomssen - Kalamazoo MI, US
David Murphy - Otsego MI, US
Clayton Waldorf - Kalamazoo MI, US
Dirk Schipper - Kalamazoo MI, US
Kevin Turner - Highland Village TX, US

Axenic Dental, Inc. - Kalamazoo MI

2403

D24152

D580054, Nov 4, 2008

Dec 22, 2006

29/270464

Eli Thomssen - Kalamazoo MI, US
David Murphy - Otsego MI, US
Clayton Waldorf - Richland MI, US
Dirk Schipper - Kalamazoo MI, US
Kevin Turner - Highland Village TX, US

AXENIC DENTAL, Inc. - Kalamazoo MI

2403

D24152