US2608472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sublimation apparatus
Assignee: FJ Stokes Machine Co
•
Filing: 1948-01-29
•
Granted: 1952-08-26
•
Expires: 1968-01-29
Abstract
No abstract record available.
Inventors
- 👤 Earl W Flosdorf
- 👤 Lewis W Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:20
CPC Classifications
B; B01; B01D; B01D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
APPARATUS FOR PURIFICATION BY VACUUM SUBLIMATION INCLUDING A JACKETED VAPORIZING CYLINDER, AN INTERNAL SCRAPER-TYPE AGITATOR ROTATABLY MOUNTED WITHIN THE VAPORIZER, A JACKETED CONDENSING CYLINDER, AN INTERNAL SWEEPER COMPRISING A HOLLOW SHAFT WITH AFFIXED SWEEPING ARMS ROTATABLY MOUNTED WITHIN THE CONDENSER, A JACKETED FILTER CHAMBER AND FILTERING ELEMENT SITUATED BETWEEN THE VAPORIZER AND THE CONDENSER, A JACKETED DUCT CONNECTING SAID VAPORIZING CYLINDER, FILTER CHAMBER AND CONDENSING CYLINDER, MEANS FOR CIRCULATING A HEATING MEDIUM THROUGH THE OUTER SHELL OF SAID JACKETED VAPORIZING CYLINDER, JACKETED DUCT, AND JACKETED FILTER CHAMBER, AND THROUGH SAID HOLLOW SHAFT, MEANS FOR CIRCULATING A COOLING MEDIUM THROUGH THE OUTER SHELL OF SAID JACKETED CONDENSING CYLINDER; MEANS FOR ROTATING SAID AGITATOR AND SAID SWEEPER; A SUBLIMATE COLLECTOR CHAMBER SITUATED TO RECEIVE THE DISCHARGE FROM SAID CONDENSING CYLINDER; AND A VACUUM PUMP PROVIDING SUCTION ON SAID SYSTEM.
Claim 2
Dependent Claim
137 words
APPARATUS FOR PURIFICATION BY VACUUM SUBLIMATION INCLUDING A JACKETED VAPORIZING CYLINDER, AN INTERNAL SCRAPER-TYPE AGITATOR ROTATABLY MOUNTED WITHIN THE VAPORIZER, A JACKETED CONDENSING CYLINDER, AN INTERNAL SWEEPER COMPRISING A HOLLOW SHAFT WITH AFFIXED SWEEPING ARMS ROTATABLY MOUNTED WITHIN THE CONDENSER, A JACKETED FILTER CHAMBER AND FILTERING ELEMENT SITUATED BETWEEN THE VAPORIZER AND THE CONDENSER, A JACKETED DUCT CONNECTING SAID VAPORIZING CYLINDER, FILTER CHAMBER AND CONDENSING CYLINDER, MEANS FOR CIRCULATING A HEATING MEDIUM THROUGH THE OUTER SHELL OF SAID JACKETED VAPORIZING CYLINDER, JACKETED DUCT, AND JACKETED FILTER CHAMBER, AND THROUGH SAID HOLLOW SHAFT, MEANS FOR CIRCULATING A COOLING MEDIUM THROUGH THE OUTER SHELL OF SAID JACKETED CONDENSING CYLINDER; MEANS FOR ROTATING SAID AGITATOR AND SAID SWEEPER; A SUBLIMATE COLLECTOR CHAMBER SITUATED TO RECEIVE THE DISCHARGE FROM SAID CONDENSING CYLINDER; AND A VACUUM PUMP PROVIDING SUCTION ON SAID SYSTEM.
References Cited (Backward Citations)
US1662056A
Cited
US1574988A
Cited
US1613632A
Cited
US1693243A
Cited
US1987282A
Cited
US1987301A
Cited
US2067019A
Cited
US2358697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |