US4488875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector for overdenture
Assignee: Core Vent Corp
•
Filing: 1983-10-07
•
Granted: 1984-12-18
•
Expires: 2003-10-07
Abstract
Abstract A pillar attached directly or indirectly to the jawbone, has an accessible snap-in ball socket. A ball attached to and projecting from an overdenture or other removable prosthesis is sized to enter the socket after being forced through its restricted opening. The overdenture is fitted in such manner that in the absence of occlusal forces, the ball lies at or just inwardly of the restriction. The socket is extended inwardly so that, upon the application of occlusal forces, the ball moves deeper into the socket without imposing stress upon the pillar or its supporting structure. Yet lateral stability is provided.
Inventors
- 👤 Gerald A. Niznick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:03
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/265; A61C13/2656; A61C8/00; A61C8/0018; A61C8/0037; A61C8/0039; A61C8/0048; A61C8/005; A61C8/0054; A61C8/006
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
A removable dental prosthesis fitted to seat upon the gum tissue of a subject, the combination therewith of: (a) a two part attachment for stabilizing said prosthesis in the mouth of the user; (b) one of said parts being adapted to be anchored directly or indirectly to the jawbone, said one part providing an accessible snap-in ball socket with a restricted opening; (c) the other of said parts being a substantially spherical part or ball adapted to be attached to said prosthesis to project therefrom and to enter said socket; (d) said prosthesis having a recess providing clearance entirely about said spherical part or ball; (e) said socket being extended inwardly to provide a space for relatively unrestricted longitudinal movement of said spherical part or ball whereby, with said prosthesis fitted so that the ball is nominally located just inwardly of the restriction, perpendicular occlusal forces are sustained primarily by the surrounding gum tissue without contact of said prosthesis recess with said one of said parts.
Claim 2
Dependent Claim
166 words
A removable dental prosthesis fitted to seat upon the gum tissue of a subject, the combination therewith of: (a) a two part attachment for stabilizing said prosthesis in the mouth of the user; (b) one of said parts being adapted to be anchored directly or indirectly to the jawbone, said one part providing an accessible snap-in ball socket with a restricted opening; (c) the other of said parts being a substantially spherical part or ball adapted to be attached to said prosthesis to project therefrom and to enter said socket; (d) said prosthesis having a recess providing clearance entirely about said spherical part or ball; (e) said socket being extended inwardly to provide a space for relatively unrestricted longitudinal movement of said spherical part or ball whereby, with said prosthesis fitted so that the ball is nominally located just inwardly of the restriction, perpendicular occlusal forces are sustained primarily by the surrounding gum tissue without contact of said prosthesis recess with said one of said parts.
Claim 3
Dependent Claim
47 words
The combination as set forth in claim 1 in which said ball projects from a short neck that has slight clearance with respect to the restricted opening of said socket whereby posterior to anterior tilting movement of the prosthesis is accommodated as occlusal forces are first imposed.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |