US3832778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic biassing device
Assignee: Individual
•
Filing: 1972-11-29
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Granted: 1974-09-03
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Expires: 1992-11-29
Abstract
Abstract An orthodontic biassing device comprising two spaced orthodontic elements is provided with an aperture in each element. The aperture may be in the form of a sleeve for receiving the body housings of an expansion screw. The sleeves are so configurated so as to interchangeably receive body housings having different lengths so that initial spacings between the two elements may be increased by replacing a shorter expansion screw which has been nearly totally extended from its respective body housings by an expansion screw with longer body housings. According to another embodiment, the spaced elements are in the form of resilient receptacles having elongated extensions connectable to teeth and openings which are configurated to receive the body housings by at least partially deforming the receptacles during insertion. Biassing devices which can be utilized both as expansion or contraction devices are described.
Inventors
- 👤 M Wallshein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:18
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
104 words
Orthodontic biassing device comprising two spaced orthodontic expansion or contraction elements each suitable for engaging one or more teeth; an elongate biassing assembly extending between said elements, sAid biassing assembly having an adjustably variable length; and connecting means for frictionally connecting each end portion of said biassing assembly to a respective element, said connecting means including mating portions, said mating portions being conectable and detachable from each other by relative movement between the latter and the former in a single plane with sufficient force to overcome the frictional forces developed by said connecting means, whereby biassing assemblies having different overall lengths can be interchanged.
Claim 2
Dependent Claim
104 words
Orthodontic biassing device comprising two spaced orthodontic expansion or contraction elements each suitable for engaging one or more teeth; an elongate biassing assembly extending between said elements, sAid biassing assembly having an adjustably variable length; and connecting means for frictionally connecting each end portion of said biassing assembly to a respective element, said connecting means including mating portions, said mating portions being conectable and detachable from each other by relative movement between the latter and the former in a single plane with sufficient force to overcome the frictional forces developed by said connecting means, whereby biassing assemblies having different overall lengths can be interchanged.
Claim 3
Dependent Claim
41 words
The biassing device as defined in claim 1, wherein said two elements comprise a plastic appliance, and wherein said mating portions comprise a sleeve embedded in each element of said appliance dimensioned to receive another end portion of said biassing assembly.
Claim 4
Dependent Claim
16 words
Orthodontic biassing device as defined in claim 1, wherein said connecting means comprises snap fastener means.
Claim 5
Dependent Claim
17 words
The biassing device as defined in claim 1, wherein said two elements comprise a removable plastic appliance.
Claim 6
Dependent Claim
16 words
The biassing device as defined in claim 1, wherein said two elements comprise an acrylic appliance.
Claim 7
Dependent Claim
27 words
The biassing device as defined in claim 1, wherein said two elements comprise elongated members including means at the respective free ends thereof for engaging a tooth.
Claim 8
Dependent Claim
18 words
The biassing device as defined in claim 1, wherein said two elements comprise a palatal suture splitting appliance.
Claim 9
Dependent Claim
76 words
The biassing device as defined in claim 1, wherein said connecting means comprises an aperture in each element, and sleeve means securely positioned in each aperture, said biassing assembly including two threaded body housings and a threaded spindle meshingly engaged in said housings in such a manner that rotation of said spindle changes the spacing between said housings and thereby also between said elements, each of said housings being removably mounted in a respective sleeve means.
Claim 10
Dependent Claim
31 words
The biassing device as defined in claim 2, wherein each sleeve is provided with a roughened exterior surface to thereby provide an improved gripping surface when embedded in the plastic appliance.
Claim 11
Dependent Claim
23 words
The biassing device as defined in claim 8, wherein said apertures are configurated to interchangeably receive threaded body housings having different overall lengths.
Claim 12
Dependent Claim
104 words
The biassing device as defined in claim 1, wherein each element comprises a substantially cylindrical and at least partially resilient container having one open and one closed end, and having a lateral opening along the length of said container, and elongated extensions connected to said container in the region of said closed end which includes means for connection to a tooth, said open end and said lateral opening having dimensions to permit the reception of a mating portion of said biassing assembly therein by at least partially deforming said container and thereby permit the removable insertion of said mating portion interiorly of said container.
Claim 13
Dependent Claim
104 words
The biassing device as defined in claim 1, wherein each element comprises a substantially cylindrical and at least partially resilient container having an open and a closed end, and having a lower opening along the length of said container bounded by two outwardly extending flanges; and having elongate extensions connected to said flanges which include means for connection to a tooth, said open end and said lower opening having dimensions to permit the reception of a mating portion of said biassing assembly therein by at least partially deforming said container and thereby permit the removable insertion of said mating portion interiorly of said container.
Claim 14
Dependent Claim
33 words
The biassing device as defined in claim 1, further comprising guide means extending between said elements and spaced from said biassing assembly for preventing relative rotation of said elements about said biassing means.
Claim 15
Dependent Claim
111 words
The biassing device as defined in claim 1, wherein said biassing assembly comprises a first container having an open end, a second container hAving an open end and so dimensioned that said first container receives said second container through the open end of the said first container, the open end of said second container being positioned interiorly of said first container, and resilient means acting on said first and second containers for generating a force which tends to change the relative spacing between said containers when said second container is moved relative to said first container beyond a normal relative position of said containers against the action of said resilient means.
Claim 16
Dependent Claim
21 words
The biassing device as defined in claim 14, wherein said resilient means comprises a helical spring extending between said two containers.
Claim 17
Dependent Claim
57 words
The biassing device as defined in claim 1, wherein said biassing assembly comprises a container having an opening at one end, piston means at least a portion of which partially extends through said open end, and resilient means for urging said piston means to move relative to said container when said resilient means is placed under stress.
Claim 18
Dependent Claim
29 words
The biassing device as defined in claim 1, wherein said mating portions comprise an aperture in each element configurated to receive an associated end portion of said biassing assembly.
Claim 19
Dependent Claim
29 words
The biassing device as defined in claim 17, wherein the exteriors of said biassing assembly end portions are dimensioned to be receivable in said apertures in pressure fitting relation.
Claim 20
Dependent Claim
29 words
The biassing device as defined in claim 17, wherein the exteriors of said biassing assembly end portions are dimensioned to be receivable in said apertures in snap fitting relation.
Claim 21
Dependent Claim
31 words
The biassing device as defined in claim 16, wherein said resilient means comprises a helical spring under compression and acting on said piston to decrease the length of said biassing assembly.
Claim 22
Dependent Claim
31 words
The biassing device as defined in claim 16, wherein said resilient means comprises a helical spring under compression and acting on said piston to increase the length of said biassing assembly.
Claim 23
Dependent Claim
139 words
Orthodontic biassing device comprising two spaced orthodontic elements each suitable for engaging one or more teeth and each provided with an opening, said elements being arranged to position said openings in spaced relation in opposition to each other; and an elongate adjustable biassing assembly extending between said elements, said biassing assembly having an adjustably variable length and having opposing end portions detachably and interchangeably receivable in respective openings of said elements, insertion and removal of said end portions being effected by longitudinal movement of said biassing assembly relative to an associated opening, whereby biassing action is provided by the biassing device by changing the length of said biassing assembly and whereby the latter may be connected and disconnected from one or both elements by being longitudinally inserted or removed from one or both of said openings of associated elements.
Claim 24
Dependent Claim
139 words
Orthodontic biassing device comprising two spaced orthodontic elements each suitable for engaging one or more teeth and each provided with an opening, said elements being arranged to position said openings in spaced relation in opposition to each other; and an elongate adjustable biassing assembly extending between said elements, said biassing assembly having an adjustably variable length and having opposing end portions detachably and interchangeably receivable in respective openings of said elements, insertion and removal of said end portions being effected by longitudinal movement of said biassing assembly relative to an associated opening, whereby biassing action is provided by the biassing device by changing the length of said biassing assembly and whereby the latter may be connected and disconnected from one or both elements by being longitudinally inserted or removed from one or both of said openings of associated elements.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |