Patent US2270047A successfully refreshed from Google Patents.
Patent US3167306A successfully refreshed from Google Patents.
US3167306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blender
Assignee: Dow Chemical Co
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Filing: 1963-03-14
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Granted: 1965-01-26
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Claude A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:05
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
BLENDING APPARATUS COMPRISING A HOLLOW CHAMBER HAVING SIDE WALLS, AN UPPER END, A LOWER END, A LONGITUDINAL AXIS, AND A PLURALITY OF COMPARTMENTS THEREIN, SAID COMPARTMENTS BEING SEPARATED ONE FROM ANOTHER BY A PLURALITY OF PARTITIONS, SAID PARTITIONS BEING GENERALLY PARALLEL WITH THE LONGITUDINAL AXIS OF SAID CHAMBER, THE PARTITIONS EXTENDING FROM THE LOWER END OF SAID CHAMBER A SUBSTANTIAL PART OF THE WAY TO SAID UPPER END, EACH OF SAID COMPARTMENTS HAVING A HOPPER COMMUNICATING WITH THE LOWER PART, A HOLLOW MEMBER HAVING AN UPPER END AND A LOWER END, A HOLLOW MEMBER EXTENDING FROM BELOW THE LOWER END OF SAID HOPPERS UPWARDLY ALONG SAID CHAMBER AND THEN DOWNWARDLY ALONG THE LONGITUDINAL AXIS OF THE CHAMBER AND THROUGH THE TOP OF SAID CHAMBER AND TERMINATING ABOVE SAID PARTITIONS, A PLURALITY OF DISCHARGE LINES, ONE OF SAID DISCHARGE LINES BEING COUPLED BETWEEN EACH OF SAID HOOPERS AND THE PART OF SAID HOLLOW MEMBER WHICH IS BELOW SAID HOPPERS, EACH OF SAID DISCHARGE LINES HAVING FLOW CONTROL MEANS COUPLED THERETO, VALVED CONDUIT MEANS COUPLED TO THE LOWER END OF SAID HOLLOW MEMBER PART FOR SUBSEQUENTIALLY APPLYING GAS UNDER PRESSURE UPWARDLY THROUGH SAID HOLLOW MEMBER IN ONE DIRECTION AND FOR WITHDRAWING MATERIAL FROM SAID CHAM-
Claim 2
Dependent Claim
203 words
BLENDING APPARATUS COMPRISING A HOLLOW CHAMBER HAVING SIDE WALLS, AN UPPER END, A LOWER END, A LONGITUDINAL AXIS, AND A PLURALITY OF COMPARTMENTS THEREIN, SAID COMPARTMENTS BEING SEPARATED ONE FROM ANOTHER BY A PLURALITY OF PARTITIONS, SAID PARTITIONS BEING GENERALLY PARALLEL WITH THE LONGITUDINAL AXIS OF SAID CHAMBER, THE PARTITIONS EXTENDING FROM THE LOWER END OF SAID CHAMBER A SUBSTANTIAL PART OF THE WAY TO SAID UPPER END, EACH OF SAID COMPARTMENTS HAVING A HOPPER COMMUNICATING WITH THE LOWER PART, A HOLLOW MEMBER HAVING AN UPPER END AND A LOWER END, A HOLLOW MEMBER EXTENDING FROM BELOW THE LOWER END OF SAID HOPPERS UPWARDLY ALONG SAID CHAMBER AND THEN DOWNWARDLY ALONG THE LONGITUDINAL AXIS OF THE CHAMBER AND THROUGH THE TOP OF SAID CHAMBER AND TERMINATING ABOVE SAID PARTITIONS, A PLURALITY OF DISCHARGE LINES, ONE OF SAID DISCHARGE LINES BEING COUPLED BETWEEN EACH OF SAID HOOPERS AND THE PART OF SAID HOLLOW MEMBER WHICH IS BELOW SAID HOPPERS, EACH OF SAID DISCHARGE LINES HAVING FLOW CONTROL MEANS COUPLED THERETO, VALVED CONDUIT MEANS COUPLED TO THE LOWER END OF SAID HOLLOW MEMBER PART FOR SUBSEQUENTIALLY APPLYING GAS UNDER PRESSURE UPWARDLY THROUGH SAID HOLLOW MEMBER IN ONE DIRECTION AND FOR WITHDRAWING MATERIAL FROM SAID CHAM-
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |