US2613136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional crystallizer
Assignee: Phillips Petroleum Co
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Filing: 1949-12-21
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Granted: 1952-10-07
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Expires: 1969-12-21
Abstract
No abstract record available.
Inventors
- 👤 Dwight L Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A FRACTIONAL CRYSTALLIZATION APPARATUS WHICH COMPRISES, IN COMBINATION, AN ELONGATED ENCLOSED CONTAINER, A PRODUCT OUTLET ADJACENT EACH END OF SAID CONTAINER AND A FEED INLET INTERMEDIATE SAID ENDS, MEAN FOR ADDING HEAT TO SAID CONTAINER ADJACENT ONE END THEREOF, MEANS FOR ABSTRACTING HEAT FROM SAID CONTAINER ALONG A PORTION THEREOF BETWEEN SAID FEED INLET AND THE UNHEATED END, AND MEANS FOR MOVING SOLID GRANULAR MATERIAL THROUGH SAID CONTAINER FROM THE COOLED TO THE HEATED END WHICH COMPRISES A RECIPROCATING SUPPORT EXTENDING AXIALLY THROUGH SAID CONTAINER, A PLURALITY OF FOLDABLE PERFORATE CONVEYOR FLIGHTS HINGED AT SPACED INTERVALS TO SAID ADAPTED TO CLOSE FOLDABLE CONVEYOR FLIGHTS BEING ADAPTED TO CLOSE ON THE INTAKE STROKE AND OPEN ON THE PUMP STROKE OF SAID FLIGHTS, AND A MOTOR PIVOTALLY ATTACHED TO SAID SUPPORTED AND SAID CONVEYOR FLIGHTS FOR APPLYING INPETUS TO THE CLOSING AND OPENING OF SAID CONVEYOR FLIGHTS.
Claim 2
Dependent Claim
145 words
A FRACTIONAL CRYSTALLIZATION APPARATUS WHICH COMPRISES, IN COMBINATION, AN ELONGATED ENCLOSED CONTAINER, A PRODUCT OUTLET ADJACENT EACH END OF SAID CONTAINER AND A FEED INLET INTERMEDIATE SAID ENDS, MEAN FOR ADDING HEAT TO SAID CONTAINER ADJACENT ONE END THEREOF, MEANS FOR ABSTRACTING HEAT FROM SAID CONTAINER ALONG A PORTION THEREOF BETWEEN SAID FEED INLET AND THE UNHEATED END, AND MEANS FOR MOVING SOLID GRANULAR MATERIAL THROUGH SAID CONTAINER FROM THE COOLED TO THE HEATED END WHICH COMPRISES A RECIPROCATING SUPPORT EXTENDING AXIALLY THROUGH SAID CONTAINER, A PLURALITY OF FOLDABLE PERFORATE CONVEYOR FLIGHTS HINGED AT SPACED INTERVALS TO SAID ADAPTED TO CLOSE FOLDABLE CONVEYOR FLIGHTS BEING ADAPTED TO CLOSE ON THE INTAKE STROKE AND OPEN ON THE PUMP STROKE OF SAID FLIGHTS, AND A MOTOR PIVOTALLY ATTACHED TO SAID SUPPORTED AND SAID CONVEYOR FLIGHTS FOR APPLYING INPETUS TO THE CLOSING AND OPENING OF SAID CONVEYOR FLIGHTS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |