Patent US3280459A successfully refreshed from Google Patents.
US3280459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined amalgamator and dispenser device
Assignee: Dentists Supply Company of New York
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Filing: 1963-06-05
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Granted: 1966-10-25
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Barvo N Walker
- 👤 Gene H Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:52
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A61; A61C; A61C5/00; A61C5/60; A61C5/62; A61C5/68; B05C17/00503; B05C17/00516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A DEVICE FOR STORING, MIXING AND DISPENSING, ELONGATED PASSAGE MEANS, PISTON MEANS MOVABLE WITHIN SAID PASSAGE MEANS FOR DISPLACING AND MIXING INGREDIENTS THEREIN, MOVABLY MOUNTED GATE MEANS FOR BLOCKING MOVEMENT OF THE INGREDIENTS THROUGH SAID PASSAGE MEANS, STORAGE MEANS, MEANS FOR TRANSFERRING MEASURED AMOUNTS OF THE INGREDIENTS FROM THE STORAGE MEANS TO THE PASSAGE MEANS, AND MEANS FOR SEQUENTIALLY IMPARTING AXIAL MOVEMENT AND ROTATION TO THE PISTON MEANS WHEN THE PASSAGE MEANS IS BLOCKED BY THE GATE MEANS TO RECEIVE AND MIX THE INGREDIENTS IN THE PASSAGE MEANS, AND MEANS OPERATIVE ON THE GATE MEANS TO UNBLOCK THE PASSAGE MEANS AND CAUSE RESUMPTION OF AXIAL MOVEMENT OF THE PISTON MEANS THROUGH THE GATE MEANS FOR DISPENSING THE MIXED INGREDIENTS.
Claim 2
Dependent Claim
120 words
IN A DEVICE FOR STORING, MIXING AND DISPENSING, ELONGATED PASSAGE MEANS, PISTON MEANS MOVABLE WITHIN SAID PASSAGE MEANS FOR DISPLACING AND MIXING INGREDIENTS THEREIN, MOVABLY MOUNTED GATE MEANS FOR BLOCKING MOVEMENT OF THE INGREDIENTS THROUGH SAID PASSAGE MEANS, STORAGE MEANS, MEANS FOR TRANSFERRING MEASURED AMOUNTS OF THE INGREDIENTS FROM THE STORAGE MEANS TO THE PASSAGE MEANS, AND MEANS FOR SEQUENTIALLY IMPARTING AXIAL MOVEMENT AND ROTATION TO THE PISTON MEANS WHEN THE PASSAGE MEANS IS BLOCKED BY THE GATE MEANS TO RECEIVE AND MIX THE INGREDIENTS IN THE PASSAGE MEANS, AND MEANS OPERATIVE ON THE GATE MEANS TO UNBLOCK THE PASSAGE MEANS AND CAUSE RESUMPTION OF AXIAL MOVEMENT OF THE PISTON MEANS THROUGH THE GATE MEANS FOR DISPENSING THE MIXED INGREDIENTS.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |