Abrading – Abrading process – Drill – thread – thread cutter – reamer – or rotary cutter abrading
Patent
1997-07-09
1998-06-09
Rose, Robert A.
Abrading
Abrading process
Drill, thread, thread cutter, reamer, or rotary cutter abrading
433102, 433224, A61C 300
Patent
active
057625417
ABSTRACT:
A method of fabricating an endodontic instrument by a machining operation is disclosed, and wherein a wire-like rod composed of a titanium alloy is advanced past a rotating grinding wheel at a relatively slow feed rate, with a sufficient depth of cut to remove all of the material on a given surface without over grinding a previously ground surface, and with the grinding wheel rotating at a relatively slow surface speed. The disclosed method is able to efficiently produce endodontic instruments having a high degree of flexibility, high resistance to torsional breakage, and with sharp cutting edges along the working length.
REFERENCES:
patent: 2797996 (1957-07-01), Jaffee et al.
patent: 4197643 (1980-04-01), Burstone et al.
patent: 4611509 (1986-09-01), Matsutani
patent: 4871312 (1989-10-01), Heath
patent: 4934934 (1990-06-01), Arpaio, Jr. et al.
patent: 4999952 (1991-03-01), Speiser et al.
patent: 5065549 (1991-11-01), Speiser et al.
patent: 5125838 (1992-06-01), Seigneurin
patent: 5628674 (1997-05-01), Heath et al.
An Initial Investigation of the Bending and Torsional Properties of Nitinol Root Canal Files, Journal of Endodontics, Jul. 1988, vol. 14, No. 7, pp. 346-351.
Superelastic Ni-Ti Wire, Wire Journal International, Mar. 1991, pp. 45-50.
RMI Titanium, RMI Compay, Niles, Ohio, 27 pages.
The Grinding Wheel, Lewis and Schleicher, Third Edition, The Grinding Wheel Institute, pp. 382-383.
Arpaio, Jerry Deposition Transcript of Feb. 6, 1997, pp. 1-210 and Exhibits; Civil Action No. 96-272 (MMS).
Heath, Derek Edward Deposition Transcripts of Feb. 27, 1997, pp. 540-666; Jun. 19, 1997, pp. 667-952; and Jun. 20, 1997, pp. 953-1175 and Exhibits; Civil Action No. 96-272 (MMS).
Mooneyhan, Dr. Jerry A. Deposition Transcripts of Mar. 6, 1997, pp 1-172; Feb. 19, 1997, pp. 1-166; and Mar. 7, 1997, pp. 1-73 and Exhibits; Civil Action No. 96-272 (MMS).
Walia, et al; Properties of Nitinol Root Canal Files; J. Dental Research, Special Issue Abstracts of Papers of 18th Annual Session American Issue of Dental Research, Mar. 15-19, 1989; Abstract of Program 1644 at p. 387.
Machining Data Handbook, Mechinability Data Center Institute of Advanced Manuf. Sciences Inc. 3rd Ed. vol. 2 Chapters 8, 18 and 20 (1980).
Civjan et al.; Potential Applications of Certain Nickel-Titanium (Nitinol) Alloys; J Dent Res Jan -Feb 1974; vol. 54 No. 1; pp.89-96.
M. Field; Plastically Deformed Debris and Build-Up Edge Produced on Surfaces by Chip Removal and Abrasive Machining Processes; Annals of the CIRP, vol. 23/1/1974; pp. 191-192.
P.A. Clorite and E.C. Reed; Influence of Various Grinding Conditions Upon Residual Stresses in Titanium; Transactions of the ASME, Feb, 1958; pp. 297-301.
L. P. Tarasov; How to Grind Titanium; American Machinst, Special Report No. 322; Nov. 10, 1952; pp. 135-146.
Heath Derek E.
Mooneyhan Jerry A.
Bieber James B.
Dentsply International Inc.
Rose Robert A.
LandOfFree
Endodontic instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Endodontic instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Endodontic instrument will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2193471