Patent US4843851A successfully refreshed from Google Patents.
Patent US3591098A successfully refreshed from Google Patents.
US3591098A
Expired / Lapsed
US
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Dental amalgam preparing apparatus
Assignee: Individual
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Filing: 1969-02-11
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Granted: 1971-07-06
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Expires: 1989-02-11
Abstract
Abstract Improved apparatus for preparing dental amalgam from pellets of compressed metal alloy powder and mercury including elements operative to pulverize the pellet in a container before the mercury is added into the same container and then is operative to both mix the mercury with the powder and then to effect a mulling action on the resulting amalgam so that the pellet of amalgam is ready for installation in the creation of a dental restoration. The illustrated embodiment includes duplicate containers so that while pulverizing action is being performed in one container, the powder resulting from a previously pulverized pellet is being combined with mercury in the performance of the mixing and mulling actions.
Inventors
- 👤 Robert C Mcshirley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/10; A; A61; A61C; A61C5/00; A61C5/60; A61C5/68; B01F23/00; B01F23/50; B01F29/40; B01F29/403; B01F29/4036; B01F29/40365; Y; Y10; Y10S; Y10S366/00; Y10S366/602
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
In an apparatus for producing a dental amalgam or other filling mixtures having a first surface which rotates in a first direction and at least one container, coupled to said first surface for rotation in a direction opposite to said first direction about an axis spaced apart from the axis of rotation of said first surface, the improvement comprising a cover means for covering said container mounted to said first surface such that rotation of said first surface causes said cover means to automatically cover said container.
Claim 2
Dependent Claim
87 words
In an apparatus for producing a dental amalgam or other filling mixtures having a first surface which rotates in a first direction and at least one container, coupled to said first surface for rotation in a direction opposite to said first direction about an axis spaced apart from the axis of rotation of said first surface, the improvement comprising a cover means for covering said container mounted to said first surface such that rotation of said first surface causes said cover means to automatically cover said container.
Claim 3
Dependent Claim
30 words
The improvement defined in claim 1 wherein the centrifugal force on said cover means caused by the rotation of said first surface causes said cover means to cover said container.
Claim 4
Dependent Claim
38 words
The improvement defined in claim 2 wherein said cover means comprises a cover element hingedly mounted to said first surface radially inwardly from said container and a weighted free end for entering the open end of said container.
Claim 5
Dependent Claim
38 words
The improvement defined in claim 3 wherein the axis of a hinge, hingedly mounting said cover element to said first surface, is below the plane of contact between said weighted free end and the opening of said container.
Claim 6
Dependent Claim
25 words
The improvement defined in claim 4 wherein said apparatus includes two containers mounted diagonally on said first surface and a cover means for both container.
References Cited (Backward Citations)
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Cited
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US2518758A
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Cited
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |