Patent US3702027A successfully refreshed from Google Patents.
US3702027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die holder for dental laboratory
Assignee: So-Mar Dental Studios Inc
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Filing: 1971-03-08
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Granted: 1972-11-07
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Expires: 1991-03-08
Abstract
Abstract A dental restoration fabricating assembly includes a rigid body member having an arch shaped, open-topped cavity with vertically serrated faces and a thin liner member mating and separably nesting in the cavity and provided along its lower border with a peripheral groove. The line is prevented from vertical movement in the cavity by a pair of locking members slideable through opposite openings in the body member and tightly engaging the liner grooves. In employing the assembly the cavity held liner is partially filled with a plastic solidifiable mass and a model is positioned in the mass or the model is cast from the impression and allowed to harden with the mass in the liner. One or more dies may be separated by removing the unlocked liner and dental cast from the cavity, slicing the desired dies and the bonded sections of the liner from the remains of the cast, working the dies as desired, reassembling them in the cavity in their initial positions and then locking them in place by reinsertion of the locking member.
Inventors
- 👤 Edwin L Marshall
- 👤 Harvey Bocian
- 👤 Neil L Hauptman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:52
CPC Classifications
A; A61; A61C; A61C9/00; A61C9/002
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A dental restoration device for the production of dental dies comprising a body member having an open topped cavity formed therein, a removable liner member vertically slidably separably nesting in said cavity in a predetermined position and having a peripheral surface substantially complementing the peripheral face of said cavity and an upwardly facing shoulder on the outside face and above the base of said liner member, and means for releasably locking said liner member in said cavity in said predetermined nested position against vertical movement therein including a locking member movable into and out engagement with said shoulder.
Claim 2
Dependent Claim
98 words
A dental restoration device for the production of dental dies comprising a body member having an open topped cavity formed therein, a removable liner member vertically slidably separably nesting in said cavity in a predetermined position and having a peripheral surface substantially complementing the peripheral face of said cavity and an upwardly facing shoulder on the outside face and above the base of said liner member, and means for releasably locking said liner member in said cavity in said predetermined nested position against vertical movement therein including a locking member movable into and out engagement with said shoulder.
Claim 3
Dependent Claim
20 words
The dental restoration device of claim 1 wherein said cavity and said liner member are provided with mating vertical serrations.
Claim 4
Dependent Claim
14 words
The dental restoration device of claim 1 wherein said cavity is of arched configuration.
Claim 5
Dependent Claim
54 words
The dental restoration device of claim 1 wherein said liner and said cavity have confronting peripheral grooves formed along their lower borders and said body member has a horizontal slot formed therein at the level of said grooves, said locking means comprising a locking member slideably projecting through said slot and engaging said grooves.
Claim 6
Dependent Claim
36 words
The dental restoration device of claim 1 wherein said cavity and said liner are of arched configuration and the peripheral wall of said liner and the peripheral face of said cavity are provided with mating serrations.
Claim 7
Dependent Claim
119 words
The dental restoration device of claim 5 wherein said liner has peripheral grooves formed along the bottom borders of the inner and outer outside faces thereof, said body member has first and second horizontal slots formed in the opposite ends thereof communicating with said cavity at the level of the base thereof and proximate the arched end of said cavity and the opposite end thereof, respectively, and said locking means comprises a first locking member slideably registering with said first slot and having an inner periphery matingly engaging the grooves in the liner outer face and a second locking member slideably registering with said second slot and having a periphery matingly engaging the grooves in the liner inner face.
Claim 8
Dependent Claim
16 words
The dental restoration device of claim 6 wherein said grooves have downwardly outwardly inclined bottom faces.
Claim 9
Dependent Claim
35 words
The dental restoration device of claim 6 wherein there are formed in the faces of said cavity at the level of the base thereof longitudinally extending grooves which are slideably engaged by said locking members.
Claim 10
Independent Claim
120 words
The method of producing a dental die comprising vertically separably nesting in a predetermined position in a cavity of a holder member a liner matching said cavity, releasably locking said nested liner in said predetermined position against vertical movement in said cavity, depositing into said liner a solidifiable casting material and a model embedded in and projecting above said casting material permitting the solidification of said casting material and the bonding thereof to said model to form a unitary base and model, separating said base and model from said holder member and slicing at least one die therefrom and thereafter reassembling said die with the remainder of said model in said holder and locking said assembly in said predetermined position.
Claim 11
Independent Claim
120 words
The method of producing a dental die comprising vertically separably nesting in a predetermined position in a cavity of a holder member a liner matching said cavity, releasably locking said nested liner in said predetermined position against vertical movement in said cavity, depositing into said liner a solidifiable casting material and a model embedded in and projecting above said casting material permitting the solidification of said casting material and the bonding thereof to said model to form a unitary base and model, separating said base and model from said holder member and slicing at least one die therefrom and thereafter reassembling said die with the remainder of said model in said holder and locking said assembly in said predetermined position.
Claim 12
Dependent Claim
61 words
The method of claim 9 wherein said solidified material is bonded to said liner, and said bonded model, cast base and liner are unlocked and separated as a unit from said holder member, said liner is sliced with said die from said unit and thereafter said die and the remainder of said unit is reassembled in said cavity and locked therein.
Claim 13
Dependent Claim
27 words
The method of claim 9 wherein said model and base are concurrently formed from a common castable mass with said liner in said holder and an impression.
References Cited (Backward Citations)
US3495333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |