US3341186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials heating and handling apparatus
Assignee: General Refractories Co
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Filing: 1965-04-28
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Granted: 1967-09-12
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Donald M Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:29
CPC Classifications
B; B28; B28C; B28C1/00; B28C1/10; B28C1/14; B28C1/22; B28C1/227; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/19; B01F27/192; B01F27/1921; B01F27/60; B01F27/72; B01F27/726; B28C5/00; B28C5/08; B28C5/10; B28C5/12; B28C5/14; B28C5/145; B28C7/00; B28C7/0007; B28C7/0023; B28C7/003; F; F26; F26B; F26B17/00; F26B17/18; F26B17/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
227 words
AN APPARATUS FOR PARTICULATE MATERIALS COMPRISING: A TROUGH TO SUPPORT SAID MATERIALS THEREIN; MEANS TO APPLY HEAT TO SAID TROUGH AND THEREBY TO THE MATERIALS THEREIN; A SHAFT ROTATABLY SUPPORTED IN SAID TROUGH; A FIRST BLADE HELICALLY DISPOSED ABOUT AND AFFIXED TO SAID SHAFT IN A FIRST FLIGHT DIRECTION, SAID FIRST BLADE TERMINATING IN A FIRST BASE CYLINDER; A SECOND BLADE HELICALLY DISPOSED ABOUT AND AFFIXED TO SAID SHAFT IN FLIGHT DIRECTION OPPOSED TO SAID FIRST FLIGHT DIRECTION, SAID SECOND BLADE EXTENDING RADIALLY FROM SAID FIRST BASE CYLINDER AND TERMINATING IN A SECOND BASE CYLINDER; A PLURALITY OF PLATE ELEMENTS AFFIXED TO SAID SHAFT DEFINING HELICAL SEGMENTS AT INTERVALS THEREALONG, AND MEANS FOR ADJUSTING THE ANGLE OF SAID PLATE ELEMENTS, THE FLIGHT DIRECTION OF SAID PLATE ELEMENTS BEING SUBSTANTIALLY THE SAME AS THE FLIGHT DIRECTION OF SAID FIRST BLADE WHEREBY THE MATERIALS IN SAID TROUGH WILL BE CIRCULATED IN ONE DIRECTION BY SAID SECOND BLADE AND IN ANOTHER DIRECTION BY THE COMBINED ACTION OF THE FIRST BLADE AND THE PLATE ELEMENTS, THE VOLUME OF MATERIALS MOVEMENT IN EACH DIRECTION BEING SUBSTANTIALLY THE SAME AND FLOW BEING IN EQUILIBRIUM IN SAID TROUGHS TO PROVIDE FOR CONTINUOUS MOVEMENT OF THE PARTICULATE MATERIALS WITHIN THE HEATING CHAMBER TO UNIFORMLY HEAT THE PARTICULATE MATERIALS AND TO PROVIDE FOR DISCHARGE FROM THE HEATING TROUGHS IN A CONTINUOUS MANNER OR IN INCREMENTAL PORTIONS.
Claim 2
Independent Claim
227 words
AN APPARATUS FOR PARTICULATE MATERIALS COMPRISING: A TROUGH TO SUPPORT SAID MATERIALS THEREIN; MEANS TO APPLY HEAT TO SAID TROUGH AND THEREBY TO THE MATERIALS THEREIN; A SHAFT ROTATABLY SUPPORTED IN SAID TROUGH; A FIRST BLADE HELICALLY DISPOSED ABOUT AND AFFIXED TO SAID SHAFT IN A FIRST FLIGHT DIRECTION, SAID FIRST BLADE TERMINATING IN A FIRST BASE CYLINDER; A SECOND BLADE HELICALLY DISPOSED ABOUT AND AFFIXED TO SAID SHAFT IN FLIGHT DIRECTION OPPOSED TO SAID FIRST FLIGHT DIRECTION, SAID SECOND BLADE EXTENDING RADIALLY FROM SAID FIRST BASE CYLINDER AND TERMINATING IN A SECOND BASE CYLINDER; A PLURALITY OF PLATE ELEMENTS AFFIXED TO SAID SHAFT DEFINING HELICAL SEGMENTS AT INTERVALS THEREALONG, AND MEANS FOR ADJUSTING THE ANGLE OF SAID PLATE ELEMENTS, THE FLIGHT DIRECTION OF SAID PLATE ELEMENTS BEING SUBSTANTIALLY THE SAME AS THE FLIGHT DIRECTION OF SAID FIRST BLADE WHEREBY THE MATERIALS IN SAID TROUGH WILL BE CIRCULATED IN ONE DIRECTION BY SAID SECOND BLADE AND IN ANOTHER DIRECTION BY THE COMBINED ACTION OF THE FIRST BLADE AND THE PLATE ELEMENTS, THE VOLUME OF MATERIALS MOVEMENT IN EACH DIRECTION BEING SUBSTANTIALLY THE SAME AND FLOW BEING IN EQUILIBRIUM IN SAID TROUGHS TO PROVIDE FOR CONTINUOUS MOVEMENT OF THE PARTICULATE MATERIALS WITHIN THE HEATING CHAMBER TO UNIFORMLY HEAT THE PARTICULATE MATERIALS AND TO PROVIDE FOR DISCHARGE FROM THE HEATING TROUGHS IN A CONTINUOUS MANNER OR IN INCREMENTAL PORTIONS.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |