US3241246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fluid bed drying of non-pigmented rubber crumb
Assignee: Phillips Petroleum Co
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Filing: 1962-08-09
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Granted: 1966-03-22
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:50
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; B29B9/00; B29B9/16; B29B2009/163; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR DRYING WET NON-PIGMENTED PARTICULATE RUBBER CRUMB COMPRISING PASSING SAID RUBBER CRUMB INTO A CLOSED ZONE, SEPARATELY PASING A DUSTING AGENT INTO SAID CLOSED ZONE FROM BELOW THE HEREINAFTER NAMED BED AND MAINTAINING SAD RUBBER CRUMB AND DUSTING AGENT IN A FLUDIZED BED THEREIN BY PASSING SUPERHEATED STEAM UPWARDLY THRU SAID BED SO AS TO COAT SAID CRUMB WITH SAID AGENT AND REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM SAID CURMB, WITHDRAWING STEAM FROM SAID ZONE, AND REMOVING COATED AND DRIED CRUMB FROM SAID ZONE AT THE PRODUCT OF THE OPERATION.
Claim 2
Independent Claim
93 words
A METHOD FOR DRYING WET NON-PIGMENTED PARTICULATE RUBBER CRUMB COMPRISING PASSING SAID RUBBER CRUMB INTO A CLOSED ZONE, SEPARATELY PASING A DUSTING AGENT INTO SAID CLOSED ZONE FROM BELOW THE HEREINAFTER NAMED BED AND MAINTAINING SAD RUBBER CRUMB AND DUSTING AGENT IN A FLUDIZED BED THEREIN BY PASSING SUPERHEATED STEAM UPWARDLY THRU SAID BED SO AS TO COAT SAID CRUMB WITH SAID AGENT AND REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM SAID CURMB, WITHDRAWING STEAM FROM SAID ZONE, AND REMOVING COATED AND DRIED CRUMB FROM SAID ZONE AT THE PRODUCT OF THE OPERATION.
References Cited (Backward Citations)
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Cited
US2665568A
Cited
US2843942A
Cited
US2879173A
Cited
US3044179A
Cited
US3001228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |