Patent US3275302A successfully refreshed from Google Patents.
US3275302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for storing and mixing dental amalgams
Assignee: Individual
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Filing: 1965-03-15
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Granted: 1966-09-27
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/25; B01F33/251; A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; Y; Y10; Y10S; Y10S366/00; Y10S366/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
A DEVICE FOR STORING AND MIXING DENTAL AMALGAMS COMPRISING A BODY MEMBER HAVING AN OPEN END AND A CLOSED END, A FIRST CHAMBER OF GIVEN CROSS-SECTIONAL DIMENSION FORMED WITHIN AND ADJACENT TO THE CLOSED END OF THE BODY MEMBER, A SECOND CHAMBER FORMED WITHIN AND COMMUNICATING WITH THE OPEN END OF THE BODY MEMBER, THE TWO CHAMBERS COMMUNICATING WITH EACH OTHER AT A POSITION INTERMEDIATE SAID ENDS OF THE BODY MEMBER, THE SECOND CHAMBER BEING OG GREATER CROSS-SECTIONAL DIMENSION THAN THE FIRST CHAMBER AT SAID INTERMEDIATE COMMUNICATING POSITION, A MEMBER LOOSE WITHIN SAID SECOND CHAMBER BUT OF SUFFICIENT SIZE TO CLOSE OFF SAID FIRST CHAMBER FROM THE SECOND CHAMBER WHEN THE BODY MEMBER IS MAINTAINED OPEN END UP, AND A CAP MEMBER FITTED OVER THE OPEN END OF THE BODY MEMBER, THE ARRANGEMENT BEING SUCH THAT A PREDETERMINED AMOUNT OF MERCURY MAY BE STORED IN SAID FIRST CHAMBER AND A PREDETERMINED AMOUNT OF ALLOY STORED IN THE SECOND CHAMBER WITH THE LOOSE MEMBER SEPARATING SAME, AND UPON SHAKING OF THE DEVICE THE LOOSE MEMBER WILL BECOME DISLODGED TO PERMIT MIXING OF THE MERCURY AND ALLOY TO FORM AN AMALGAM, WITH THE LOOSE MEMBER AIDING IN SUBDIVIDING AND MIXING SAID MATERIALS TO FORM THE AMALGAM.
Claim 2
Independent Claim
204 words
A DEVICE FOR STORING AND MIXING DENTAL AMALGAMS COMPRISING A BODY MEMBER HAVING AN OPEN END AND A CLOSED END, A FIRST CHAMBER OF GIVEN CROSS-SECTIONAL DIMENSION FORMED WITHIN AND ADJACENT TO THE CLOSED END OF THE BODY MEMBER, A SECOND CHAMBER FORMED WITHIN AND COMMUNICATING WITH THE OPEN END OF THE BODY MEMBER, THE TWO CHAMBERS COMMUNICATING WITH EACH OTHER AT A POSITION INTERMEDIATE SAID ENDS OF THE BODY MEMBER, THE SECOND CHAMBER BEING OG GREATER CROSS-SECTIONAL DIMENSION THAN THE FIRST CHAMBER AT SAID INTERMEDIATE COMMUNICATING POSITION, A MEMBER LOOSE WITHIN SAID SECOND CHAMBER BUT OF SUFFICIENT SIZE TO CLOSE OFF SAID FIRST CHAMBER FROM THE SECOND CHAMBER WHEN THE BODY MEMBER IS MAINTAINED OPEN END UP, AND A CAP MEMBER FITTED OVER THE OPEN END OF THE BODY MEMBER, THE ARRANGEMENT BEING SUCH THAT A PREDETERMINED AMOUNT OF MERCURY MAY BE STORED IN SAID FIRST CHAMBER AND A PREDETERMINED AMOUNT OF ALLOY STORED IN THE SECOND CHAMBER WITH THE LOOSE MEMBER SEPARATING SAME, AND UPON SHAKING OF THE DEVICE THE LOOSE MEMBER WILL BECOME DISLODGED TO PERMIT MIXING OF THE MERCURY AND ALLOY TO FORM AN AMALGAM, WITH THE LOOSE MEMBER AIDING IN SUBDIVIDING AND MIXING SAID MATERIALS TO FORM THE AMALGAM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |