Patent US2083292A successfully refreshed from Google Patents.
US4017973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tooth straightener
Assignee: HMW Industries Inc
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Filing: 1976-06-16
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Granted: 1977-04-19
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Expires: 1996-06-16
Abstract
Abstract Disclosed is a permanent magnet tooth straightener. Nuts are attached by bands to an anchor tooth and a mobile tooth. Screws are threaded into each nut and axially aligned. The screws are permanent magnets so that their adjacent ends form interacting magnet poles which may either attract or repell each other. As the position of the mobile tooth changes the screws may be rotated to adjust the magnetic force acting between the teeth.
Inventors
- 👤 John E. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/006
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
100 words
An orthodontic assembly for intraoral use comprising a pair of internally threaded tubular members, means connected to said members for mounting them on adjacent teeth in a human mouth, and a pair of screws threadedly received in said members whereby said screws may be advanced and retracted by rotation in said members, said screws being permanently magnetized in a direction parallel to their axes of rotation so that rotation of said screws in said members varies the magnetic force acting between adjacent ends of said screws when mounted on adjacent teeth to vary the orthodontic correction force between the teeth.
Claim 2
Dependent Claim
100 words
An orthodontic assembly for intraoral use comprising a pair of internally threaded tubular members, means connected to said members for mounting them on adjacent teeth in a human mouth, and a pair of screws threadedly received in said members whereby said screws may be advanced and retracted by rotation in said members, said screws being permanently magnetized in a direction parallel to their axes of rotation so that rotation of said screws in said members varies the magnetic force acting between adjacent ends of said screws when mounted on adjacent teeth to vary the orthodontic correction force between the teeth.
Claim 3
Dependent Claim
19 words
An assembly according to claim 1 wherein said mounting means comprise bands adapted to be wrapped around the teeth.
Claim 4
Dependent Claim
15 words
An assembly according to claim 2 wherein said bands are adhesively secured to the teeth.
Claim 5
Dependent Claim
17 words
An assembly according to claim 2 wherein said bands are conformed to the shape of the teeth.
Claim 6
Dependent Claim
15 words
An assembly according to claim 2 comprising mounting pads on said bands supporting said members.
Claim 7
Dependent Claim
23 words
An assembly according to claim 5 wherein opposite ends of said screws are slotted for facilitating rotation of said screws in said members.
Claim 8
Dependent Claim
58 words
An assembly according to claim 5 including a second internally threaded tubular member connected to each of said bands on the side opposite from said first members, and second permanent magnet screws received in said second members whereby said screws are on diametrically opposite sides of a tooth when one of said bands is wrapped around the tooth.
Claim 9
Dependent Claim
94 words
An orthodontic assembly comprising an anchor tooth and a mobile tooth, a first nut mounted on said anchor tooth, a second nut mounted on said mobile tooth, first and second screws threaded into said nuts, said screws being in longitudinal axial alignment whereby advancement of said screws brings their adjacent ends into close proximity to each other, the opposite ends of said screws being slotted for ease of adjustment, said screws comprising permanent magnets polarized longitudinally parallel to their aligned axes of rotation whereby the adjacent ends of said screws form interacting magnetic poles.
Claim 10
Dependent Claim
94 words
An orthodontic assembly comprising an anchor tooth and a mobile tooth, a first nut mounted on said anchor tooth, a second nut mounted on said mobile tooth, first and second screws threaded into said nuts, said screws being in longitudinal axial alignment whereby advancement of said screws brings their adjacent ends into close proximity to each other, the opposite ends of said screws being slotted for ease of adjustment, said screws comprising permanent magnets polarized longitudinally parallel to their aligned axes of rotation whereby the adjacent ends of said screws form interacting magnetic poles.
Claim 11
Dependent Claim
24 words
An assembly according to claim 8 wherein said adjacent ends of said screws are of unlike polarity whereby they are attracted to each other.
Claim 12
Dependent Claim
22 words
An assembly according to claim 8 wherein said adjacent ends of said screws are of like polarity whereby they repell each other.
Claim 13
Dependent Claim
72 words
An assembly according to claim 8 including a third nut on the side of said anchor tooth diametrically opposite from said first nut, a third screw threaded into said third nut, a fourth nut on the side of said mobile tooth diametrically opposite from said second nut, a fourth screw threaded into said fourth nut, said third and fourth screws also comprising permanent magnets and being in axial alignment with each other.
Claim 14
Dependent Claim
35 words
An assembly according to claim 11 wherein the adjacent ends of said first and second screws are of unlike polarity and the adjacent ends of said third and fourth screws are also of unlike polarity.
Claim 15
Dependent Claim
34 words
An assembly according to claim 11 wherein the adjacent ends of said first and second screws are of unlike polarity and the adjacent ends of said third and fourth screws are of like polarity.
Claim 16
Dependent Claim
21 words
An assembly according to claim 8 wherein said nuts are secured to said teeth by bands wrapped around the respective teeth.
References Cited (Backward Citations)
US3028671A
Cited
US3879850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |