Patent US4838786A successfully refreshed from Google Patents.
US4838786A
Expired / Lapsed
US
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Orthodontic bracket
Assignee: Manufacturers Hanover Trust Co
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Filing: 1987-05-06
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Granted: 1989-06-13
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Expires: 2007-05-06
Abstract
Abstract An orthodontic bracket and method of making same wherein the bracket has at least one tiewing integrally formed with a base portion. In one form of the invention the bracket is provided with at least one longitudinally extending groove which extends into the base portion, the groove having at least a portion extending beyond at least a portion of the groove opening. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.
Inventors
- 👤 James F. Reher
- 👤 Farrokh Farzin-Nia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:37
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
79 words
An orthodontic bracket comprising at least one tiewing having a slot for receiving an archwire, a base portion integrally formed with said tiewing having a surface for attachment to a tooth, said base portion having at least one longitudinally extending groove across said bracket and extending from said surface into said base portion and beyond at least a portion of the opening of said groove at said surface, said groove having no sharp edges internally of said base portion.
Claim 2
Dependent Claim
79 words
An orthodontic bracket comprising at least one tiewing having a slot for receiving an archwire, a base portion integrally formed with said tiewing having a surface for attachment to a tooth, said base portion having at least one longitudinally extending groove across said bracket and extending from said surface into said base portion and beyond at least a portion of the opening of said groove at said surface, said groove having no sharp edges internally of said base portion.
Claim 3
Dependent Claim
97 words
An orthodontic bracket comprising at least one tiewing having a slot for receiving an archwire, a base portion integrally formed with said tiewing having a surface for attachment to a tooth, said base portion having at least two longitudinal extending grooves spaced substantially an equal distance from the longitudinal center line of said bracket, each of said grooves extending from said surface into said base portion and beyond at least a portion of the opening of said groove at said surface, each of said narrow grooves having no sharp corners or edges internally of said base portion.
Claim 4
Dependent Claim
97 words
An orthodontic bracket comprising at least one tiewing having a slot for receiving an archwire, a base portion integrally formed with said tiewing having a surface for attachment to a tooth, said base portion having at least two longitudinal extending grooves spaced substantially an equal distance from the longitudinal center line of said bracket, each of said grooves extending from said surface into said base portion and beyond at least a portion of the opening of said groove at said surface, each of said narrow grooves having no sharp corners or edges internally of said base portion.
Claim 5
Dependent Claim
16 words
An orthodontic bracket according to claim 1 wherein said bracket comprises two axially spaced apart tiewings.
Claim 6
Dependent Claim
16 words
An orthodontic bracket according to claim 2 wherein said bracket comprises two axially spaced apart tiewings.
Claim 7
Dependent Claim
19 words
An orthodontic bracket according to claim 1 further comprising a substantially circular groove forming said surface of said base.
Claim 8
Dependent Claim
18 words
An orthodontic bracket according to claim 1 wherein said bracket is made of a single crystal alumina material.
Claim 9
Dependent Claim
16 words
An orthodontic bracket according to claim 1 wherein said bracket is made of a ceramic material.
Claim 10
Dependent Claim
16 words
An orthodontic bracket according to claim 1 wherein said bracket is made of a metal material.
Claim 11
Dependent Claim
18 words
An orthodontic bracket according to claim 2 wherein said bracket is made of a single crystal alumina material.
Claim 12
Dependent Claim
16 words
An orthodontic bracket according to claim 2 wherein said bracket is made of a ceramic material.
Claim 13
Dependent Claim
16 words
An orthodontic bracket according to claim 2 wherein said bracket is made of a metal material.
Claim 14
Dependent Claim
52 words
An orthodontic bracket according to claim 1 further comprising at least two grooves each being disposed at an angle in the range from about 30° to about 60° with respect to said longitudinal axis, one of said at least two grooves lieing in the opposite direction with respect to said other groove.
References Cited (Backward Citations)
US4216583A
Cited
US4216583B1
Cited
US4661059A
Cited
US4595598A
Cited
US4639218A
Cited
US4604057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |