US4119292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mould for making and holding a working model of a jaw impression for the manufacture of dental prostheses
Assignee: Individual
•
Filing: 1977-08-01
•
Granted: 1978-10-10
•
Expires: 1997-08-01
Abstract
Abstract The invention provides a mould for making and holding a working model of a jaw impression for use in the manufacture of dental prostheses. The mould has removable retaining elements connected to it for holding the working model in the mould and an arched internal wall arranged at a distance from the outer wall of the mould. The mould base has ribs for retaining the working model arranged between the outer wall and the internal wall of the mould and a hollow projection with an easily rupturable floor extending into the interior of the mould.
Inventors
- 👤 Gerd Haker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:18
CPC Classifications
A; A61; A61C; A61C9/00; A61C9/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A mould for the manufacture and receipt of a working model of a jaw impression for use in the manufacture of dental prostheses, which mould comprises a base having an outer side wall, an internal wall spaced from the outer side wall, retaining ribs for the working model arranged between the outer side wall and the internal wall and a hollow projection in the mould base extending into the interior of the mould within the base area bounded by the internal wall, the projection having a floor which is easily reputrable, and includes retaining elements to hold the working model in the mould.
Claim 2
Dependent Claim
103 words
A mould for the manufacture and receipt of a working model of a jaw impression for use in the manufacture of dental prostheses, which mould comprises a base having an outer side wall, an internal wall spaced from the outer side wall, retaining ribs for the working model arranged between the outer side wall and the internal wall and a hollow projection in the mould base extending into the interior of the mould within the base area bounded by the internal wall, the projection having a floor which is easily reputrable, and includes retaining elements to hold the working model in the mould.
Claim 3
Dependent Claim
14 words
A mould according to claim 1, wherein the hollow projection is cylindrical in shape.
Claim 4
Dependent Claim
18 words
A mould according to claim 1, wherein the hollow projection is in the shape of a truncated cone.
Claim 5
Dependent Claim
22 words
A mould according to claim 1, wherein there is a further, retaining wall located in the space bounded by the internal wall.
Claim 6
Dependent Claim
23 words
A mould according to claim 4, wherein the mould has a rear wall and the retaining wall is located adjacent the rear wall.
Claim 7
Dependent Claim
29 words
A mould according to claim 4, wherein the retaining wall extends from one side of the internal wall of the mould to an opposite side of the internal wall.
Claim 8
Dependent Claim
16 words
A mould according to claim 4, wherein the retaining wall, viewed in plan, has an apex.
Claim 9
Dependent Claim
21 words
A mould according to claim 4, wherein the retaining wall has the same height as the internal wall of the mould.
Claim 10
Dependent Claim
25 words
A mould according to claim 4, wherein the retaining wall is arranged symmetrical to the longitudinal axis of the area bounded by the internal wall.
Claim 11
Dependent Claim
17 words
A mould according to claim 4, wherein the retaining wall decreases in cross-section from the base upwards.
References Cited (Backward Citations)
US2718126A
Cited
US3458936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |