Duane S Cox

US Patent:

6988500, Jan 24, 2006

Filed:

Apr 30, 2004

Appl. No.:

10/835622

Inventors:

Duane Cox - Atlanta GA, US

Assignee:

J. Palmero Sales Company, Inc. - Stratford CT

International Classification:

A62B 7/10

US Classification:

12820619, 12820115, 12820527

Abstract:

A face mask having a mask body made of a shaped first material with an opening and a reduced resistance filter material placed within the opening. The reduced resistance filter material permitting air to flow relatively freely there through. In one embodiment one edge of a shield is fixed to the mask body of the face mask and covers the opening and the reduced resistance filter material protecting the opening from liquid splashes and the exhaled air flow from a user downwards, away from the user's eyes. Exhaled air from a user wearing the face mask is caused to relatively freely flow through the reduced resistance filter and to be directed downward preventing the fogging of a user's eyewear. The face mask of the present invention is particularly suited to the medical and dental profession.

US Patent:

7044738, May 16, 2006

Filed:

May 13, 2003

Appl. No.:

10/437649

Inventors:

Duane Edward Cox - Atlanta GA, US

International Classification:

A61C 5/14

US Classification:

433136

Abstract:

A rubber dam () used for protecting a patient () during dental procedures. The dam () includes a symmetrical round frame () which supports a flexible membrane (). A prepunched hole () located approximately 0. 5 inch from the membrane center () permits rotation of the frame () in order to position the hole () over the desired tooth () without causing the relative position of the frame () with respect to the patient's face to be substantially altered.

US Patent:

7198486, Apr 3, 2007

Filed:

Apr 30, 2004

Appl. No.:

10/836793

Inventors:

Duane Edward Cox - Atlanta GA, US

International Classification:

A61C 5/02

US Classification:

433102, 433165, 433166

Abstract:

An endodontic file () including a discontinuity () formed within the file shank (). The discontinuity () creates a safe breakage point at which the file () will fail prior to a failure occurring at any other point along the length () of the file. The safe breakage point prevents the tip () of the file () from becoming irremovably embedded in a human tooth () after file failure. Substantially the entire length () of the file () remains connected to the tip () after file failure, thereby providing a considerable portion of the file which may be gripped and manipulated in order to accomplish file removal. Empirical data is presented to permit proper characterization of the region surrounding the discontinuity ().