US3599331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic elements
Assignee: Individual
•
Filing: 1969-06-26
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Granted: 1971-08-17
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Expires: 1989-06-26
Abstract
Abstract The arch wire of an orthodontic tooth straightening assembly is attachable at any selected one of several different levels with respect to the crown thereof as treatment proceeds by means of a U-shape ribbon arch bracket having side slots for the arch wire located adjacent the base in the top and bottom of the sidewalls of the bracket arch itself. The bracket is attached to a band which embraces the tooth, and is also provided with a longitudinally arranged relatively short helical torsion spring having a relatively long vertical lever arm adapted to engage the tooth to urge it to turn in a desired direction.
Inventors
- 👤 Brian W Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
An orthodontic assembly comprising, in combination: a tooth embracing band; a U-shaped ribbon arch bracket attached to said band having vertically spaced side slots therein located adjacent the base in the top and bottom of the side walk of the bracket arch itself; horizontal arch wire means extending through said slots for tying the band to the tooth at any one of several different levels with respect to the crown of the tooth; in which the sidewalls of the bracket arch are also provided with horizontally aligned transverse holes, and the horizontal shaft of a helical torsion spring mounted in said holes having a vertical relatively long lever arm adapted to engage the tooth to urge it to turn in a desired direction.
Claim 2
Dependent Claim
123 words
An orthodontic assembly comprising, in combination: a tooth embracing band; a U-shaped ribbon arch bracket attached to said band having vertically spaced side slots therein located adjacent the base in the top and bottom of the side walk of the bracket arch itself; horizontal arch wire means extending through said slots for tying the band to the tooth at any one of several different levels with respect to the crown of the tooth; in which the sidewalls of the bracket arch are also provided with horizontally aligned transverse holes, and the horizontal shaft of a helical torsion spring mounted in said holes having a vertical relatively long lever arm adapted to engage the tooth to urge it to turn in a desired direction.
Claim 3
Dependent Claim
25 words
The invention as defined by claim 1, which when uprighting or torquing movements are required provides for the combination therewith of an auxiliary lever principle.
Claim 4
Dependent Claim
33 words
The invention according to claim 2, wherein the forces applied to the tooth are easy to apply and measure and the center of rotation is closer to the incisal edge of such tooth.
Claim 5
Dependent Claim
23 words
The invention according to claim 3, which provides accommodation in selected positions of a separate spring for each tooth to obtain root movement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |