US3815237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic biassing device
Assignee: Individual
•
Filing: 1972-11-29
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Granted: 1974-06-11
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Expires: 1992-11-29
Abstract
Abstract An orthodontic biassing device is in the form of an elongated spring or sleeve having an elongated peripheral opening suitable for the passage of an arch wire therethrough. A spring is described which is formed by bending a continuous wire in the form of a repeating triangular pattern having two opposing sets of alternating peaks so that the peaks, when brought adjacent to one another and the wire, subsequent to bending of the same, substantially define a cylindrical surface with an elongated opening formed by the spaced adjacent peaks. According to another embodiment, a spring is formed by bending a helical coil along one of its axial edge portions so as to indent the turns of the helical coil along the axial edge portions substantially into closed C-shaped turns to thereby form a cylindrical cavity interiorly of the C-shaped turns which is suitable for receiving an arch wire. The springs are easily mounted on arch wire sections extending between two adjacent brackets - the springs forming a biassing device on the arch wire for either pushing the brackets away from one another or drawing them towards one another. A sleeve, advantageously apertured or in the form of a bellows, is described which functions similarly to the spring.
Inventors
- 👤 M Wallshein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:04
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
173 words
Orthodontic biassing device comprising in combination two spaced orthodontic brackets suitable for mounting on respective adjacent teeth and having lateral surfaces; an orthodontic arch wire section extending between said two brackets; and an elongate resilient member defining a cylindrical surface and a hollow cylindrical cavity configurated to receive said arch wire section in substantially coaxial relation, said resilient member being in a state of compression along the length when mounted on said archwire section thereof to cause each end to abut against a lateral surface of another one of said brackets, said resilient member including an elongate opening generally extending along the length thereof to provide access to said cylindrical cavity, said opening having a width smaller than the diameter of said arch wire section, whereby once said resilient member is urged onto said arch wire section by resiliently enlarging the width of said opening and passing said arch wire section therethrough, said resilient member becomes securely mounted on said arch wire section and acts on said brackets to move the same apart.
Claim 2
Dependent Claim
173 words
Orthodontic biassing device comprising in combination two spaced orthodontic brackets suitable for mounting on respective adjacent teeth and having lateral surfaces; an orthodontic arch wire section extending between said two brackets; and an elongate resilient member defining a cylindrical surface and a hollow cylindrical cavity configurated to receive said arch wire section in substantially coaxial relation, said resilient member being in a state of compression along the length when mounted on said archwire section thereof to cause each end to abut against a lateral surface of another one of said brackets, said resilient member including an elongate opening generally extending along the length thereof to provide access to said cylindrical cavity, said opening having a width smaller than the diameter of said arch wire section, whereby once said resilient member is urged onto said arch wire section by resiliently enlarging the width of said opening and passing said arch wire section therethrough, said resilient member becomes securely mounted on said arch wire section and acts on said brackets to move the same apart.
Claim 3
Dependent Claim
21 words
Orthodontic biassing device as defined in claim 1, wherein said cylindrical surface is in the form of a circular cylindrical surface.
Claim 4
Dependent Claim
19 words
Orthodontic biassing device as defined in claim 1, wherein said resilient member is made from a continuous resilient wire.
Claim 5
Dependent Claim
42 words
Orthodontic biassing device as defined in claim 1, wherein said resilient member comprise alternately spaced triangular bracing portions positioned to each side of said elongate opening, and connecting portions each connecting two adjacent bracing portions positioned on opposite sides of said opening.
Claim 6
Dependent Claim
29 words
Orthodontic biassing device as defined in claim 2, wherein said elongate opening generally defines a straight opening on said surface substantially parallel to the axis of said cylindrical surface.
Claim 7
Dependent Claim
25 words
Orthodontic biassing device as defined in claim 2, wherein said opening generally defines a helical opening on said surface about the axis of the latter.
Claim 8
Dependent Claim
33 words
Orthodontic biassing device as defined in claim 1, wherein said member is in the form of an elongate bellows flexible along its axis and having an elongate slot along a peripheral portion thereof.
Claim 9
Dependent Claim
17 words
Orthodontic biassing device as defined in claim 7, wherein said slot is substantially parallel to said axis.
Claim 10
Dependent Claim
34 words
Orthodontic biassing device as defined in claim 1, wherein said member is in the form of an elongate apertured sleeve flexible along its axis and having an elongate slot along a peripheral portion thereof.
Claim 11
Dependent Claim
17 words
Orthodontic biassing device as defined in claim 9, wherein said slot is substantially parallel to said axis.
Claim 12
Dependent Claim
57 words
Orthodontic biassing device as defined in claim 1, wherein said resilient member is formed by bending a helical coil along one of its axial edge portions so as to indent the turns of the helical coil along the axial edge portion substantially into closed C-shaped turns to thereby form a cylindrical cavity exteriorly of the helical coil.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |