Metal working – Method of mechanical manufacture – Dental appliance making
Reexamination Certificate
2008-07-15
2008-07-15
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Dental appliance making
C433S102000, C216S091000
Reexamination Certificate
active
07398598
ABSTRACT:
A method of manufacturing endodontic files involves a chemical milling process to yield endodontic files having a desired taper and/or degree of sharpness. The process involves the steps of (a) forming helical cutting edges in the cutting portion of the metallic rod; and (b) chemically milling the cutting portion of the rod so as to sharpen and/or taper the cutting portion. The rod may be formed of any desirable metallic material, for example stainless steel or a nickel-titanium alloy. The cutting edges may be formed by torsioning, cutting, grinding, machining, laser micromachining, or grit blasting.
REFERENCES:
patent: 1372170 (1921-03-01), Judd
patent: 2173218 (1939-09-01), Zoppi
patent: 2434286 (1948-01-01), Pfann
patent: 2724918 (1955-11-01), Triman
patent: 3803014 (1974-04-01), Atkinson
patent: 3823514 (1974-07-01), Tsuchiya
patent: 3869373 (1975-03-01), Schacher et al.
patent: 4116755 (1978-09-01), Coggins et al.
patent: 4934934 (1990-06-01), Arpaio, Jr. et al.
patent: 5382319 (1995-01-01), Tumminaro, Jr.
patent: 5527332 (1996-06-01), Clement
patent: 5653590 (1997-08-01), Heath et al.
patent: 5741429 (1998-04-01), Donadio, III et al.
patent: 5762497 (1998-06-01), Heath
patent: 5762541 (1998-06-01), Heath et al.
patent: 5762811 (1998-06-01), Munoz
patent: 5882198 (1999-03-01), Taylor et al.
patent: 5928144 (1999-07-01), Real
patent: 5941760 (1999-08-01), Heath et al.
patent: 5984679 (1999-11-01), Farzin-Nia et al.
patent: 6086773 (2000-07-01), Dufresne et al.
patent: 6315558 (2001-11-01), Farzin-Nia et al.
patent: 6575747 (2003-06-01), Riitano et al.
patent: 6793838 (2004-09-01), Hansen et al.
patent: 7207111 (2007-04-01), Aloise et al.
patent: 0 119 714 (1984-09-01), None
patent: 0118714 (1984-09-01), None
patent: 02002144154 (2002-05-01), None
Fischer Dan E.
Hobson Barry L.
Lewis Paul
Afzali Sarang
Bryant David P.
Ultradent Products Inc.
Workman Nydegger
LandOfFree
Methods for manufacturing endodontic instruments does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for manufacturing endodontic instruments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for manufacturing endodontic instruments will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2803356