US4450958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-actuated dental capsule
Assignee: Jeneric Industries Inc
•
Filing: 1983-01-18
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Granted: 1984-05-29
•
Expires: 2003-01-18
Abstract
Abstract A self-actuated dental capsule is provided which includes a three-part container for holding the liquid component of an amalgam. One part of the container holds the liquid; a second part is used to attach the container along an inner side wall of the capsule so that the container is not repeatedly pounded by the amalgam during the vibratory process; and the third part allows the liquid to achieve sufficient momentum when the capsule is vibrated in a dental amalgamator to rupture the container.
Inventors
- 👤 Arun Prasad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:56
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; Y; Y10; Y10S; Y10S215/00; Y10S215/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A self-actuated capsule for a dental amalgam, said capsule including a powdered component and a liquid component and comprising: a chamber holding the powdered component and for mixing the powdered and liquid component together to form the amalgam, the chamber including a side wall and end walls; a rupturable container for holding the liquid component of the amalgam, said container including a first portion holding the liquid component, a second portion securing the container along the side wall of the chamber, and a third hollow portion in communication with said first portion for allowing the liquid component to acquire sufficient momentum to rupture the container when the capsule is vibrated in a dental amalgamator; and means for opening the chamber to remove the amalgam after the powdered and liquid components have been mixed together.
Claim 2
Dependent Claim
134 words
A self-actuated capsule for a dental amalgam, said capsule including a powdered component and a liquid component and comprising: a chamber holding the powdered component and for mixing the powdered and liquid component together to form the amalgam, the chamber including a side wall and end walls; a rupturable container for holding the liquid component of the amalgam, said container including a first portion holding the liquid component, a second portion securing the container along the side wall of the chamber, and a third hollow portion in communication with said first portion for allowing the liquid component to acquire sufficient momentum to rupture the container when the capsule is vibrated in a dental amalgamator; and means for opening the chamber to remove the amalgam after the powdered and liquid components have been mixed together.
Claim 3
Dependent Claim
30 words
The capsule of claim 1 wherein the capsule includes two mating sections and the second portion of the container is engaged by the sections in the region where they mate.
Claim 4
Dependent Claim
21 words
The capsule of claim 2 wherein one of the sections includes a recess for receiving the second portion of the container.
Claim 5
Dependent Claim
22 words
The capsule of claim 1 wherein the container is in the form of an elongated tube which is sealed at both ends.
Claim 6
Dependent Claim
14 words
The capsule of claim 4 wherein the tube is composed of a polymeric material.
Claim 7
Dependent Claim
14 words
The capsule of claim 5 wherein the ends of the tube are heat sealed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |