US3834026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crown remover
Assignee: Individual
•
Filing: 1973-03-26
•
Granted: 1974-09-10
•
Expires: 1993-03-26
Abstract
Abstract An improvement in a dental crown removing pliers having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws which improvement resides in a resilient deformable gripping surface on the surface of said jaws generally contoured to coincide with a side surface of a crown, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against the surface of a crown; a method of removing a crown by gripping the same in the jaws of a dental crown removing pliers which has on a surface of at least one jaw a resilient deformable gripping surface.
Inventors
- 👤 M Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:20
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
In a dental crown removing pliers, having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws, the improvement which comprises a resilient deformable gripping surface on at least one jaw, the surface of said jaw generally contoured to coincide with a side surface of a crown or bridge, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against a portion of the side surface of a crown, the surface of said jaw being made of a porous material which absorbs water.
Claim 2
Dependent Claim
99 words
In a dental crown removing pliers, having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws, the improvement which comprises a resilient deformable gripping surface on at least one jaw, the surface of said jaw generally contoured to coincide with a side surface of a crown or bridge, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against a portion of the side surface of a crown, the surface of said jaw being made of a porous material which absorbs water.
Claim 3
Dependent Claim
19 words
An improvement according to claim 1, wherein the surface contains inwardly directed gripping fingers or nipples which are deformable.
Claim 4
Dependent Claim
20 words
An improvement according to claim 2, wherein the jaws of the pliers comprise a pair of opposed concave jaw members.
Claim 5
Dependent Claim
17 words
Improvement, according to claim 2, wherein said resilient deformable gripping surface is of natural or synthetic rubber.
Claim 6
Dependent Claim
36 words
An improvement according to claim 2, wherein the combined area of the surfaces of the jaws of the pliers are at least 20 percent of the area of the side of the crown to be removed.
Claim 7
Dependent Claim
20 words
An improvement according to claim 2, wherein at least 50 percent of the surface of the jaw contains gripping fingers.
Claim 8
Dependent Claim
20 words
An improvement according to claim 2, wherein both of the opposed jaws are rounded and have a roughened rubber surface.
Claim 9
Dependent Claim
20 words
An improvement according to claim 2, wherein the surface of both jaws is made of a resilient deformable gripping surface.
Claim 10
Dependent Claim
41 words
A method for removing a dental crown which comprises gripping the crown within the jaws of the dental pliers of claim 2 and applying a force to said crown away from its substructure whereby to separate said crown from said tooth.
Claim 11
Dependent Claim
27 words
An improvement according to claim 1, wherein one jaw is provided with a convex-shaped gripping surface and the opposed jaw is provided with a concave-shaped gripping surface.
References Cited (Backward Citations)
US1111603A
Cited
US2674800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |