US5017138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Set of endodontic instruments
Assignee: Individual
•
Filing: 1989-05-05
•
Granted: 1991-05-21
•
Expires: 2009-05-05
Abstract
Abstract Differences in the diameters of successive cutting instruments, either hand- or engine-powered, within sets of instruments described herein progress sequentially by constant percentages of increase, rather than by constant linear increase as is currently the practice in the dental manufacturing industry.
Inventors
- 👤 Herbert Schilder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:50
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/40; A61C5/42
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
A set of elongated endodontic cutting instruments with each having different cutting diameters wherein said diameters increase from the smallest to the largest at a constant percentage of the diameter.
Claim 2
Dependent Claim
30 words
A set of elongated endodontic cutting instruments with each having different cutting diameters wherein said diameters increase from the smallest to the largest at a constant percentage of the diameter.
Claim 3
Dependent Claim
25 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said diameters are the d1 diameter as defined by ISO standards.
Claim 4
Dependent Claim
18 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said diameters are files.
Claim 5
Dependent Claim
18 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said diameters are reamers.
Claim 6
Dependent Claim
19 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said constant percentage is 43.1%.
Claim 7
Dependent Claim
13 words
A set of instruments as set forth in claim 5 having six instruments.
Claim 8
Dependent Claim
20 words
A set of instrument as set forth in claim 6 wherein the smallest instrument has a 0.100 mm d1 diameter.
Claim 9
Dependent Claim
19 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said constant percentage is 34.8%.
Claim 10
Dependent Claim
13 words
A set of instrument as set forth in claim 8 having seven instruments.
Claim 11
Dependent Claim
20 words
A set of instruments as set forth in claim 9 wherein the smallest instrument has a 0.100 mm d1 diameter.
Claim 12
Dependent Claim
19 words
A set of endodontic elongated cutting instruments as set forth in claim 1 wherein said constant percentage is 29.2%.
Claim 13
Dependent Claim
13 words
A set of instruments as set forth in claim 11 having eight instruments.
Claim 14
Dependent Claim
20 words
A set of instruments as set forth in claim 12 wherein the smallest instrument has a 0.100 mm d1 diameter.
Claim 15
Dependent Claim
32 words
A set of instruments as set forth in claim 1 wherein the largest instrument has a d1 diameter of substantially 0.600 mm and the smallest has a d1 diameter of 0.100 mm.
Claim 16
Independent Claim
62 words
A method of shaping and enlarging a root canal of a human tooth comprising, successively inserting in the root canal for enlargement and shaping thereof a series of endodontic instruments having cutting surfaces in which the successive cutting instruments each has a d1 diameter, as determined by ISO standards, that is larger by a constant percentage than the previously inserted smaller instrument.
Claim 17
Independent Claim
62 words
A method of shaping and enlarging a root canal of a human tooth comprising, successively inserting in the root canal for enlargement and shaping thereof a series of endodontic instruments having cutting surfaces in which the successive cutting instruments each has a d1 diameter, as determined by ISO standards, that is larger by a constant percentage than the previously inserted smaller instrument.
References Cited (Backward Citations)
US4332561A
Cited
US4518356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |