Steve J Treadway

US Patent:

D505030, May 17, 2005

Filed:

Jan 15, 2004

Appl. No.:

29/197491

Inventors:

Derek E. Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

International Classification:

0604

US Classification:

D 6403

US Patent:

7806690, Oct 5, 2010

Filed:

Mar 7, 2008

Appl. No.:

12/044699

Inventors:

Derek E. Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

Assignee:

D&S Dental, LLC - Johnson City TN

International Classification:

A61C 5/02

US Classification:

433102

Abstract:

An endodontic instrument adapted for use in performing root canal therapy. The instrument includes a holder with a grip sized to be gripped by a hand of a user. An arm extends from the grip and has a length sufficient to permit a free end portion to reach into a patient's mouth while the grip remains outside the mouth. An elongate rod with a working portion having cutting portions thereon extends along the length of the arm of the holder such that a proximal end of the rod is adjacent the grip of the holder and the distal end of the rod with the working portion thereon extends from the free end portion of the arm, such that the working portion may be used to treat a root canal in a patient's mouth by a dentist manipulating the holder outside the mouth of the patient.

US Patent:

8105085, Jan 31, 2012

Filed:

Mar 4, 2009

Appl. No.:

12/397961

Inventors:

Derek Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

Assignee:

D&S Dental, LLC - Johnson City TN

International Classification:

A61C 5/02

US Classification:

433224, 433102

Abstract:

An endodontic instrument with an elongate shaft and a plurality of inverted frusto-conical sections with radial cutting edge disposed along a working portion of the shaft.

US Patent:

8192200, Jun 5, 2012

Filed:

Jul 21, 2010

Appl. No.:

12/840877

Inventors:

Derek E. Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

Assignee:

D&S Dental, LLC - Johnson City TN

International Classification:

A61C 5/02

US Classification:

433224, 433102

Abstract:

A method and instrument for removing material from an internal portion of a tooth wherein the tool used to remove the material includes an elongate shaft extending from a first end to a second end; a cutting surface extending along a working portion of the elongate shaft; a handle attached to the first end of the elongate shaft, the handle including a first end and a second end; a projection attached to the elongate shaft and extending around a portion of the perimeter of the shaft substantially adjacent to the first end of the handle, wherein the projection provides a barrier to prevent a user's fingers from moving beyond the handle directly onto the elongate shaft.

US Patent:

8393899, Mar 12, 2013

Filed:

Jan 30, 2012

Appl. No.:

13/361284

Inventors:

Derek Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

Assignee:

D&S Dental, LLC - Johnson City TN

International Classification:

A61C 5/02

US Classification:

433224, 433102

Abstract:

An endodontic instrument with an elongate shaft and a plurality of inverted frusto-conical sections with radial cutting edge disposed along a working portion of the shaft.

US Patent:

8439682, May 14, 2013

Filed:

Mar 4, 2009

Appl. No.:

12/398142

Inventors:

Derek Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

Assignee:

D&S Dental, LLC - Johnson City TN

International Classification:

A61C 5/02

US Classification:

433224, 433102

Abstract:

A set of endodontic instrument adapted to remove material from walls of a root canal having a working portion with a relatively short working length. A substantially untapered nonworking portion of the instrument shaft with substantially parallel sidewalls and a diameter substantially the same as the diameter of the proximal end of the working portion extends from adjacent a proximal end of the working portion to the proximal end of the shaft. The working portions of the set of instruments have relatively small, slowly progressing taper rates.

US Patent:

8644978, Feb 4, 2014

Filed:

Jan 20, 2011

Appl. No.:

13/010450

Inventors:

Derek E. Heath - Vero Beach FL, US
Brian J. Little - Jonesborough TN, US
Steve A. Treadway - Jonesborough TN, US

Assignee:

D & S Dental, LLC - Johnson City TN

International Classification:

G06F 19/00
B24B 1/00
B24B 7/19
B24B 7/30
A61C 5/02

US Classification:

700164, 451 48, 433102

Abstract:

A machining apparatus and method for fabricating endodontic instruments adapted for use in performing root canal procedures is disclosed. The machining apparatus includes computer numerical control (CNC) machining that automates much of the fabrication process. The disclosed machining apparatus and method is programmable to efficiently produce varying configurations of endodontic instruments on the same machining apparatus.

US Patent:

20030193123, Oct 16, 2003

Filed:

Apr 16, 2002

Appl. No.:

10/123471

Inventors:

Derek Heath - Vero Beach FL, US
Steve Treadway - Johnson City TN, US

International Classification:

B23Q003/00

US Classification:

269/28900R

Abstract:

A cutting board for food products which is composed of a plurality of abrasive conical inserts arranged in parallel rows on a support so that a knife blade may be drawn along the channel formed between adjacent rows to sharpen the knife blade on both sides by contact with the inserts. The inserts are separately fabricated and mounted in tapered openings formed through the support.