US3896548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental model construction
Assignee: Individual
•
Filing: 1974-02-04
•
Granted: 1975-07-29
•
Expires: 1994-02-04
Abstract
Abstract In a dental model in which at least one tooth portion is separable it is disclosed to provide interlocking pin and socket means between the separable portion and the remainder of the model to insure proper alignment and to preclude accidental dislodgement.
Inventors
- 👤 Eric H Zahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
A; A61; A61C; A61C9/00; A61C9/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
In a dental model in which a reproduction of tooth and jaw structure of a patient is mounted on a base, and at least one portion of said reproduction is dowelled to and separable from the base and from laterally contiguous non-separable portions of said reproduction by reason of intervening parting lines, the improvement comprising: means forming a pair of opposeD recesses in a face of a separable portion and the juxtaposed face of a non-separable portion of said reproduction, said recesses defining an inward extending socket disposed in spanning relation to the intervening parting line; and a pin fitted to said socket and cooperable with said recesses to prevent separation of said separable portion from the base.
Claim 2
Dependent Claim
118 words
In a dental model in which a reproduction of tooth and jaw structure of a patient is mounted on a base, and at least one portion of said reproduction is dowelled to and separable from the base and from laterally contiguous non-separable portions of said reproduction by reason of intervening parting lines, the improvement comprising: means forming a pair of opposeD recesses in a face of a separable portion and the juxtaposed face of a non-separable portion of said reproduction, said recesses defining an inward extending socket disposed in spanning relation to the intervening parting line; and a pin fitted to said socket and cooperable with said recesses to prevent separation of said separable portion from the base.
Claim 3
Dependent Claim
18 words
The structure of claim 1 in which said socket is inwardly tapered and said pin is taper-fitted thereto.
Claim 4
Dependent Claim
32 words
The structure of claim 1 in which there is a recess between each face of said separable portion and two laterally contiguous portions, and a pin is fitted to each said socket.
Claim 5
Dependent Claim
24 words
The structure of claim 2 in which the tapered pin is provided with an enlarged head to facilitate gripping of the pin for withdrawal.
Claim 6
Dependent Claim
48 words
The structure according to claim 1 in which there is at least a pair of said separable portions and there is a pair of opposed recesses defining an inward extending socket in spanning relation to each intervening parting lines, and there is a pin fitted to each socket.
References Cited (Backward Citations)
US3436827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |