Patent US4431415A successfully refreshed from Google Patents.
US4431415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for replacing missing teeth in human dentition
Assignee: Individual
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Filing: 1982-04-08
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Granted: 1984-02-14
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Expires: 2002-04-08
Abstract
Abstract The device which is adapted to be secured between two existing teeth is suitable for supporting an artificial denture to replace an anterior tooth or a posterior tooth. The device is comprised of a backing member having two complimentary parts which are mounted for sliding movement relative to each other. Each part is provided with a laterally extending projection adapted to be located in a groove in the side of an adjacent real tooth whereby upon sliding movement of the two parts, the distance between the ends of the projections can be shortened to allow placement of the device between two existing teeth. The two parts can then be slid relative to each other to extend the projections into the grooves in two spaced apart real teeth. A threaded clamping member is then tightened to secure the two parts against relative movement with respect to each other and a facing member is secured to the backing member.
Inventors
- 👤 Pasquale Tigani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:22
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
An artificial denture device comprising a backing member comprised of two complementary parts, means for connecting said two parts to each other against lateral separation while permitting sliding movement relative to each other, each of said parts having a projection extending in opposite directions relative to each other and securing means for securing said two parts to each other to prevent sliding movement, said two parts defining a flat upper surface having a substantially rectilinear outline, while being separated along a substantially diagonal line to define two mating surfaces, tongue and groove means formed on said mating surface to allow sliding movement of one part relative to the other along said diagonal line and said securing means being comprised of a threaded member having an enlarged head, a corresponding threaded aperture in one of said members adjacent to the diagonal line whereby said enlarged head overlaps said diagonal line to secure said two parts against movement relative to each other upon tightening of said threaded member in said threaded aperture.
Claim 2
Dependent Claim
170 words
An artificial denture device comprising a backing member comprised of two complementary parts, means for connecting said two parts to each other against lateral separation while permitting sliding movement relative to each other, each of said parts having a projection extending in opposite directions relative to each other and securing means for securing said two parts to each other to prevent sliding movement, said two parts defining a flat upper surface having a substantially rectilinear outline, while being separated along a substantially diagonal line to define two mating surfaces, tongue and groove means formed on said mating surface to allow sliding movement of one part relative to the other along said diagonal line and said securing means being comprised of a threaded member having an enlarged head, a corresponding threaded aperture in one of said members adjacent to the diagonal line whereby said enlarged head overlaps said diagonal line to secure said two parts against movement relative to each other upon tightening of said threaded member in said threaded aperture.
Claim 3
Dependent Claim
62 words
An artificial denture as set forth in claim 1, further comprising facing means adapted to be secured to said backing member to cover said securing means, said head of said threaded member being provided with undercut side surfaces and said facing means being provided with a groove having a complementary configuration to assist in retaining said facing member on said backing member.
Claim 4
Dependent Claim
194 words
An articificial denture device comprising a backing member comprised of two complementary parts, means for connecting said two parts to each other against lateral separation while permitting sliding movement relative to each other, each of said parts having a projection extending in opposite directions relative to each other, securing means for securing said two parts to each other to prevent sliding movement and facing means adapted to be secured to said backing member to cover sai securing means wherein said two parts are provided with flat complementary surfaces substantially co-extensive with each other, elongated slot means formed in one of said members, threaded aperture means formed in the other of said parts in alignment with said elongated slot means and at least one threaded member having a head adapted to clamp said two parts against movement relative to each other, said head being provided with undercut tapered sides and said casing means being provided with grooves complementary to said tapered sides to assist in retaining said facing means on said backing member and wherein said projections extend laterally of said members in a common plane parallel to the flat complementary surfaces of said parts.
Claim 5
Dependent Claim
194 words
An articificial denture device comprising a backing member comprised of two complementary parts, means for connecting said two parts to each other against lateral separation while permitting sliding movement relative to each other, each of said parts having a projection extending in opposite directions relative to each other, securing means for securing said two parts to each other to prevent sliding movement and facing means adapted to be secured to said backing member to cover sai securing means wherein said two parts are provided with flat complementary surfaces substantially co-extensive with each other, elongated slot means formed in one of said members, threaded aperture means formed in the other of said parts in alignment with said elongated slot means and at least one threaded member having a head adapted to clamp said two parts against movement relative to each other, said head being provided with undercut tapered sides and said casing means being provided with grooves complementary to said tapered sides to assist in retaining said facing means on said backing member and wherein said projections extend laterally of said members in a common plane parallel to the flat complementary surfaces of said parts.
Claim 6
Dependent Claim
58 words
An artificial denture as set forth in claim 3 wherein a plurality of said threaded members are provided for securing said parts together and said facing means are provided with a plurality of complementary grooves for the heads on said threaded members to prevent rotation of said facing means in a plane parallel to said complementary flat faces.
References Cited (Backward Citations)
US1702282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |