US4579531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental repair apparatus having a dental anchoring device
Assignee: MICRODRILL ENGINEERING Ltd OF DYFFRYN WORKS
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Filing: 1984-01-19
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Granted: 1986-04-01
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Expires: 2004-01-19
Abstract
Abstract A dental anchoring device including a stud, one end of which has a left hand external screw thread and the other end of which has a right hand external screw thread.
Inventors
- 👤 Herbert N. Hinks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:38
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/30; A61C5/35
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A dental repair apparatus comprising a dental anchoring device and a shank for supporting the dental anchoring device, the dental anchoring device comprising a stud, one end portion of which has a left hand external screw thread and the other end portion of which has a right hand external screw thread, and the shank having at one end thereof a hole for receiving one end of the stud and which at the other end thereof is adapted to be received into a dental handpiece, said one end of said stud being removably threaded in the hole of said shank.
Claim 2
Dependent Claim
99 words
A dental repair apparatus comprising a dental anchoring device and a shank for supporting the dental anchoring device, the dental anchoring device comprising a stud, one end portion of which has a left hand external screw thread and the other end portion of which has a right hand external screw thread, and the shank having at one end thereof a hole for receiving one end of the stud and which at the other end thereof is adapted to be received into a dental handpiece, said one end of said stud being removably threaded in the hole of said shank.
Claim 3
Dependent Claim
28 words
Dental repair apparatus as claimed in claim 1 wherein the shank is adapted at the said other end thereof to be received into a latching type dental handpiece.
Claim 4
Dependent Claim
19 words
Dental repair apparatus as claimed in claim 2 wherein the shank has a first tapered portion adjacent said hole.
Claim 5
Dependent Claim
23 words
Dental repair apparatus as claimed in claim 3 wherein the shank is provided with a second tapered portion adjacent the first tapered portion.
Claim 6
Dependent Claim
38 words
Dental repair apparatus as claimed in claim 4 and including a drill which is suitable for providing a hole into which the stud can be screwed and which embodies a stop which determines the depth of the hole.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |