DAVID RANDOLPH WASSERMAN, DMD
Dentist in Las Vegas, NV

6051802, Apr 18, 2000

Jul 21, 1998

9/120263

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Robert Dybus - Boulder City NV

B23K 1122

219 68

A needle burner apparatus is a generally rectangular box with a needle alignment plate located under the cover thereof. The interior of the box is provided with the electrode assembly, the drive assembly for horizontally rotating and horizontally reciprocating the electrode, the exhaust fan assembly and the container for collecting burned needle residue. The needle alignment plate is mounted to the underside of the cover of the box and is spring-biased upwardly. The electrode is a single rod element that is positioned horizontally in a carriage. The rod electrode is mounted for rotation along its horizontal axis and the carriage is also mounted for horizontal reciprocal motion. A drive motor effect the axial rotation of the electrode and, through a gearing assembly, the same drive motor also effects the horizontal reciprocal motion of the carriage. An exhaust fan with a charcoal filter treats any noxious fumes created by the burning or melting of the end of the needle before the fumes are exhausted from the interior of the needle burner assembly. A container is positioned below the electrode to collect any ashes or other residue created during the burning of the end of the needle.

5868563, Feb 9, 1999

Dec 12, 1997

8/989595

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Robert Dybus - Boulder City NV

A61C 300

433 29

A dental syringe tip handpiece assembly includes a clear, plastic syringe tip mounted in an adaptor for connection to the handpiece. On the interior of the adaptor at a location adjacent the end of the syringe tip, a source of light, preferably a fiberoptic ringlight, is provided. Light from the light source will be transmitted down the length of the syringe tip and emitted from the end thereof. By positioning the end of the syringe tip in the patient's oral cavity, the dentist can provide illumination in the oral cavity so that various dental functions can be more easily and accurately performed. The source of light may also be a light bulb positioned at the rear of the adaptor. The adaptor is made from clear, or at least translucent, material so that light from the light bulb will be transmitted through the adaptor and then into the syringe tip. A special handpiece body formed of a handpiece inner unit and an outer cover is provided to receive the adaptor and syringe tip assembly. The air, water and fiberoptic lines are positioned inside the handpiece body.

5833456, Nov 10, 1998

Mar 24, 1997

8/822048

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Robert Dybus - Boulder City NV

A61C 300, A61C 1700

433 29

A dental syringe tip handpiece assembly includes a clear, plastic syringe tip mounted in an adaptor for connection to the handpiece. On the interior of the adaptor at a location adjacent the end of the syringe tip, a source of light is provided. Light from the light source will be transmitted down the length of the syringe tip and emitted from the end thereof. By positioning the end of the syringe tip in the patient's oral cavity, the dentist can provide illumination in the oral cavity so that various dental functions can be more easily and accurately performed. The adaptor can be made from clear, or at least translucent, material so that light from the light bulb will be transmitted through the adaptor and then into the syringe tip. A slot is provided on one end of the syringe tip for keying the syringe tip into the adaptor to properly align the syringe tip in the adaptor.

5192206, Mar 9, 1993

Oct 11, 1990

7/596987

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV
Richard R. Mathews - Huntington Park CA

A61C 1700

433 80

Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.

5306146, Apr 26, 1994

Feb 16, 1993

8/017770

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Richard R. Matthews - Huntington Park CA

A61C 1702, A61C 1700

433 80

A syringe tip is locked into a three-way dental handpiece body by means of a syringe tip locking assembly that screws into a threaded receiver in the body of the handpiece. The locking assembly comprises an adaptor that has a central tapered male member that receives one end of the syringe tip, a gripping member that fits over the tapered male member and a locking cap that screws onto the adaptor and over the gripping member. The gripping member includes a plurality of gripping fingers that engage the syringe tip and the locking cap effects the tightening of the gripping fingers into the syringe tip. The locking assembly both applies a positive gripping action to the syringe tip and also pulls the syringe tip onto the tapered male member to securely hold the syringe tip in the adaptor during use by the dentist. The gripping member is captivated inside the locking cap to prevent inadvertent separation of the pieces.

5882194, Mar 16, 1999

Jan 8, 1998

/002073

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Robert Dybus - Boulder City NV

A61C 100, A61C 1706

433 29

A dental suction tool has a disposable sanitary plastic suction tip to prevent cross contamination from one patient to the next. Additionally, a light source such as a fiberoptic bundle with or without a ring light is provided on the interior of the dental suction tool to provide light to the end of the plastic disposable suction tip. Illumination from the ring light or directly from the fiberoptic bundle is transmitted along the length of the suction tip and is emitted from the end thereof to illuminate the oral cavity during dental procedures.

5342195, Aug 30, 1994

Jan 13, 1993

8/004098

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV
Richard R. Mathews - Huntington Park CA

A61G 1702, A61C 110, A61C 112

433 80

Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.

5489205, Feb 6, 1996

Feb 1, 1994

8/189801

Warren Davis - Las Vegas NV
David Wasserman - Las Vegas NV
Richard R. Matthews - Huntington Park CA

A61G 1702

433 80

A syringe tip is locked into a three-way dental handpiece body means of a syringe tip locking assembly that screws into a threaded receiver in the body of the handpiece. The locking assembly comprises an adaptor that has a central tapered male member that receives one end of the syringe tip, a gripping member that snaps over a raised lip on the end of the adaptor body and a locking cap that screws onto the adaptor and over the gripping member. The gripping member includes a plurality of gripping fingers that engage the syringe tip and the locking cap effects the tightening of the gripping fingers into the syringe tip. The locking assembly both applies a positive gripping action to the syringe tip and also pulls the syringe tip onto the tapered male member to securely hold the syringe tip in the adaptor during use by the dentist. The gripping member is captivated onto the raised lip of the adaptor to prevent inadvertent separation of the pieces.

5236356, Aug 17, 1993

Apr 16, 1991

7/687039

Warren Davis - Rosemead CA
David Wasserman - Las Vegas NV

A61G 1702

433 80

A clear rigid plastic syringe tip having a central water passageway and three arcuate section air passageways disposed circumferentially about the water passageway. A novel adaptor is used to mount the syringe tip to the handpiece body.