US4214366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture construction
Assignee: Accius BV
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Filing: 1978-10-16
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Granted: 1980-07-29
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Expires: 1998-10-16
Abstract
Abstract A denture construction comprising at least one implant and one or more elements to be positioned on or against the at least one implant and forming a denture or parts thereof or imitating same, which implant, or each of which implants, consists of a basic portion and one or more head portions, which head portions co-operate with the element, or the elements, in order to keep same in a proper relationship therewith after positioning of the implant or implants, in which construction the elements in the position of a point of contact with a head portion contain a magnet body, while each head portion and each element with magnet body are so formed that in the position where element and head portion contact each other a convex plane of the one contacts a flat plane of the other.
Inventors
- 👤 Ernst A. Laban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:41
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0081; A61C13/00; A61C13/225; A61C13/235
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
In a denture apparatus including an implant having a base portion for insertion in a patient's jaw and a head portion having a first surface for supporting a denture element, said apparatus further including a denture element having a second surface for directly engaging said first surface for mounting said denture element on said implant, the improvement wherein there are provided a magnetic element and a magnetically attractable element, one in each of said head portion and said denture element in the vicinity of said first and second surfaces, and wherein one of said surfaces is flat, and wherein the other of said surfaces is convex.
Claim 2
Dependent Claim
106 words
In a denture apparatus including an implant having a base portion for insertion in a patient's jaw and a head portion having a first surface for supporting a denture element, said apparatus further including a denture element having a second surface for directly engaging said first surface for mounting said denture element on said implant, the improvement wherein there are provided a magnetic element and a magnetically attractable element, one in each of said head portion and said denture element in the vicinity of said first and second surfaces, and wherein one of said surfaces is flat, and wherein the other of said surfaces is convex.
Claim 3
Dependent Claim
29 words
A denture apparatus according to claim 1, wherein said head portion of said implant has an almost spherical part and said second surface of said denture element is flat.
Claim 4
Dependent Claim
33 words
A denture apparatus according to claim 1 or 2 wherein said head portion of said implant comprises a ball of magnetic material coated with a thin layer of one of gold and teflon.
Claim 5
Dependent Claim
43 words
A denture apparatus according to claim 1 or 2, wherein said head portion of said implant comprises a sphere of magnetic material contained in a ball bearing which leaves a part of said sphere exposed at the top end of said head portion.
Claim 6
Dependent Claim
37 words
A denture apparatus according to claim 2, wherein said magnetic element is a bar magnet which is attached in said denture element with one end of said bar magnet being flat and adjacent to said head portion.
Claim 7
Dependent Claim
44 words
A denture apparatus according to claim 4, wherein said second surface of said denture element is a flat cylindrical magnet which is attached in said denture element in such a manner that an axial end face of the magnet is adjacent to said sphere.
Claim 8
Dependent Claim
29 words
A denture apparatus according to claim 1, wherein said head portion of said implant is a flat cylindrical magnet and said second surface of said denture element is convex.
Claim 9
Dependent Claim
35 words
A denture apparatus according to one of claims 1, 2, 6 or 7 wherein said base portion is adapted to be rigidly fixed to said patient's jaw and wherein said head portion is approximately spherical.
Claim 10
Dependent Claim
89 words
A denture apparatus according to claim 8 wherein said base comprises a plurality of closely-spaced independent elements having bottom helical-shaped portions which are adapted to be embedded in said jaw and said head portion comprises at least two trapezoidally-shaped head portions, corresponding to said helical-shaped bottom portions, and a ball of magnetic material between said head portions, said trapezoidally-shaped head portions fixedly connected to each other by a beam applied around and over said trapezoidally-shaped head portions, said beam shaped so that said magnetic ball projects above said beam.
Claim 11
Dependent Claim
38 words
A denture apparatus according to claim 7 comprising said base portion which is rigidly fixed to said patient's jaw and at least one head portion provided with a flat cylindrical magnet at the end of said head portion.
Claim 12
Dependent Claim
38 words
A denture apparatus according to one of claims 1, 2, 6 or 7, wherein said denture element comprises a part forming a denture member or portions thereof or imitating the same, provided with one or more magnetic elements.
References Cited (Backward Citations)
FR1420594A
Cited
FR2029344A1
Cited
FR2076270A5
Cited
US3729825A
Cited
US3748739A
Cited
US3798770A
Cited
FR2179157A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |