Patent US5049072A successfully refreshed from Google Patents.
US5049072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-ring attachment system for dental prosthesis
Assignee: CALCITEK Inc CARLBAD CA A TX CORP
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Filing: 1990-06-26
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Granted: 1991-09-17
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Expires: 2010-06-26
Abstract
Abstract An o-ring attachment system with opposed convex circumferential surfaces for removable dentures to be attached to a natural or an implanted fixed root system. The o-ring attachment system can be screwed into an implanted root using a manipulating means interposed between o-ring abutment and an attachment screw. In connection therewith, a tool is provided for implanting the o-ring attachment system, the tool having a captured toroidal spring for gripping the attachment system.
Inventors
- 👤 Jeffrey D. Lueschen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:19
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0086; A61C13/00; A61C13/225; A61C13/265; A61C13/2656
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
119 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post; means for securing the post to the natural or implanted root in the patient's mouth; said post further comprising a hemispherical base proximal of the securing means and a spherical end distal from the securing means, said hemispherical base and said spherical end forming opposed convex circumferential walls for receiving the elastomeric ring; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; and means for manipulating the post securing means, the manipulating means comprising a faceted segment interposed between the hemispherical base and the securing means.
Claim 2
Dependent Claim
119 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post; means for securing the post to the natural or implanted root in the patient's mouth; said post further comprising a hemispherical base proximal of the securing means and a spherical end distal from the securing means, said hemispherical base and said spherical end forming opposed convex circumferential walls for receiving the elastomeric ring; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; and means for manipulating the post securing means, the manipulating means comprising a faceted segment interposed between the hemispherical base and the securing means.
Claim 3
Dependent Claim
24 words
The removable denture attachment system according to claim 1 wherein the post further comprises a spacer between the spherical end and the hemispherical base.
Claim 4
Dependent Claim
15 words
The removable denture attachment system according to claim 2 wherein the spacer is a cylinder.
Claim 5
Dependent Claim
17 words
The removable denture attachment system according to claim 1 further comprising means for engaging the manipulating means.
Claim 6
Dependent Claim
139 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post; means for securing the post to the natural or implanted root in the patient's mouth; said post further comprising a hemispherical base proximal to the securing means and a spherical end distal from the securing means, said hemispherical base and said spherical end forming opposed convex circumferential walls for receiving the elastomeric ring; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; means for manipulating the post securing means, the manipulating means comprising a faceted segment interposed between the hemispherical base and the securing means; and means for engaging the manipulating means, said manipulating means engaging means comprising means for gripping the opposed convex circumferential walls.
Claim 7
Dependent Claim
139 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post; means for securing the post to the natural or implanted root in the patient's mouth; said post further comprising a hemispherical base proximal to the securing means and a spherical end distal from the securing means, said hemispherical base and said spherical end forming opposed convex circumferential walls for receiving the elastomeric ring; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; means for manipulating the post securing means, the manipulating means comprising a faceted segment interposed between the hemispherical base and the securing means; and means for engaging the manipulating means, said manipulating means engaging means comprising means for gripping the opposed convex circumferential walls.
Claim 8
Dependent Claim
17 words
The removable denture attachment system according to claim 5 wherein the gripping means comprise a toroidal spring.
Claim 9
Dependent Claim
16 words
The removable denture attachment system according to claim 6 wherein the securing means comprise a screw.
Claim 10
Dependent Claim
18 words
The removable denture attachment system according to claim 5 wherein the faceted segment comprises an hexagonal male segment.
Claim 11
Dependent Claim
17 words
The removable denture attachment system according to claim 8 further comprising means for engaging the manipulating means.
Claim 12
Dependent Claim
24 words
The removable denture attachment system according to claim 9 wherein the manipulating means engaging means comprise means for gripping the opposed convex circumferential walls.
Claim 13
Dependent Claim
17 words
The removable denture attachment system according to claim 10 wherein the gripping means comprise a toroidal spring.
Claim 14
Dependent Claim
16 words
The removable denture attachment system according to claim 11 wherein the securing means comprise a screw.
Claim 15
Dependent Claim
98 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post, said post comprising means for receiving the elastomeric ring; means for securing the post to the natural or implanted root in a patient's mouth; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; means for manipulating the post and the post securing means; and removable means for engaging the manipulating means, said removable engaging means comprising toroidal spring means for gripping the ring receiving means.
Claim 16
Dependent Claim
98 words
A removable denture attachment system for use with a natural or implanted fixed root system which comprises in combination: an elastomeric ring; a post, said post comprising means for receiving the elastomeric ring; means for securing the post to the natural or implanted root in a patient's mouth; an annular retainer surrounding the elastomeric ring; a denture surrounding said annular retainer, said ring and said post; means for manipulating the post and the post securing means; and removable means for engaging the manipulating means, said removable engaging means comprising toroidal spring means for gripping the ring receiving means.
Claim 17
Dependent Claim
19 words
The removable denture attachment system according to claim 13 wherein the ring receiving means comprise opposed convex circumferential walls.
Claim 18
Dependent Claim
31 words
The removable denture attachment system according to claim 14 wherein the post further comprises a hemispherical base proximal to the securing means and a spherical end distal from the securing means.
Claim 19
Dependent Claim
24 words
The removable denture attachment system according to claim 15 wherein the post further comprises a spacer between the spherical end and the hemispherical base.
Claim 20
Dependent Claim
15 words
The removable denture attachment system according to claim 16 wherein the spacer is a cylinder.
Claim 21
Dependent Claim
44 words
The removable denture attachment system according to claim 13 wherein the manipulating means comprise a faceted male segment interposed between the post and the securing means and wherein the removable engaging means comprise a faceted female segment adapted to engage the faceted male segment.
Claim 22
Dependent Claim
30 words
The removable denture attachment system according to claim 18 wherein the faceted male segment comprises an hexagonal male segment and wherein the faceted female segment comprises a hexagonal female segment.
Claim 23
Dependent Claim
16 words
The removable denture attachment system according to claim 19 wherein the securing means comprise a screw.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |