US3262215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying and conveying of solids
Assignee: Phillips Petroleum Co
•
Filing: 1963-05-06
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Granted: 1966-07-26
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Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charles L Davis
- 👤 Hugh E Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; B29C; B29C48/00; B29C48/25; B29C48/355; F; F26; F26B; F26B17/00; F26B17/10; F26B17/106; F26B17/26; B29C48/03; B29C48/04; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A METHOD OF DRYING AND CONVEYING RUBBER PARTICLES WHEREBY A SLURRY OF RUBBER CRUMB AND WATER HAS SUBSTANTIALLY ALL OF THE WATER REMOVED THEREFROM TO PRODUCE A NON-AGGLOMERATED MASS OF RUBBERY PARTICLES, SAID METHOD COMPRISING: A. PASSING SAID SLURRY TO AN INTERIOR DRIER; B. WORKING SAID RUBBER IN SAID DRIER UNDER PRESSURE SO THAT A SUBSTANTIAL AMOUNT OF WATER IS REMOVED FROM SAID RUBBER; C. SEPARATING THE THUS SQUEEZED WATER FROM RUBBER; D. EXTRUDING SAID RUBBER THROUGH A DIE PLATE INTO A ZONE OF LOWER PRESSURE, THUS CAUSING THE RUBBER TO EXPAND SUDDENLY, BREAKING INTO PARTICLES AND THEREBY RELEASING ADDED MOISTURE TO VAPORIZATION; E. ENVELOPING SAID PARTICLES WITH A HEATED GAS AS THEY ARE EXTRUDED THROUGH THE DIE PLATE TO MAINTAIN SAID ADDED MOISTURE IN VAPOR CONDITION AND TO PREVENT CONDENSATION OF WATER VAPOR ON THE PARTICLES, AND TO PREVENT AGGLOMERATION OF SAID PARTICLES; F. COLLECTING SAID PARTICLES ON A CONVEYOR AND TRANSPORTING SAID PARTICLES AWAY FROM SAID EXTRUSION DRYER; AND G. MAINTAINING SAID HEATED GAS IN CONTACT WITH SAID PARTICLES AS THEY ARE BEING CONVEYED AWAY FROM SAID DIE TO CAUSE FURTHER DRYING OF SAID PARTICLES AND TO PREVENT CONDENSATION OF WATER VAPOR ON SAID PARTICLES.
Claim 2
Independent Claim
197 words
A METHOD OF DRYING AND CONVEYING RUBBER PARTICLES WHEREBY A SLURRY OF RUBBER CRUMB AND WATER HAS SUBSTANTIALLY ALL OF THE WATER REMOVED THEREFROM TO PRODUCE A NON-AGGLOMERATED MASS OF RUBBERY PARTICLES, SAID METHOD COMPRISING: A. PASSING SAID SLURRY TO AN INTERIOR DRIER; B. WORKING SAID RUBBER IN SAID DRIER UNDER PRESSURE SO THAT A SUBSTANTIAL AMOUNT OF WATER IS REMOVED FROM SAID RUBBER; C. SEPARATING THE THUS SQUEEZED WATER FROM RUBBER; D. EXTRUDING SAID RUBBER THROUGH A DIE PLATE INTO A ZONE OF LOWER PRESSURE, THUS CAUSING THE RUBBER TO EXPAND SUDDENLY, BREAKING INTO PARTICLES AND THEREBY RELEASING ADDED MOISTURE TO VAPORIZATION; E. ENVELOPING SAID PARTICLES WITH A HEATED GAS AS THEY ARE EXTRUDED THROUGH THE DIE PLATE TO MAINTAIN SAID ADDED MOISTURE IN VAPOR CONDITION AND TO PREVENT CONDENSATION OF WATER VAPOR ON THE PARTICLES, AND TO PREVENT AGGLOMERATION OF SAID PARTICLES; F. COLLECTING SAID PARTICLES ON A CONVEYOR AND TRANSPORTING SAID PARTICLES AWAY FROM SAID EXTRUSION DRYER; AND G. MAINTAINING SAID HEATED GAS IN CONTACT WITH SAID PARTICLES AS THEY ARE BEING CONVEYED AWAY FROM SAID DIE TO CAUSE FURTHER DRYING OF SAID PARTICLES AND TO PREVENT CONDENSATION OF WATER VAPOR ON SAID PARTICLES.
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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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |