US2587820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor oxygen recondenser
Assignee: INDEPENDENT ENGINEERING COMPAN
•
Filing: 1947-05-16
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Granted: 1952-03-04
•
Expires: 1967-05-16
Abstract
No abstract record available.
Inventors
- 👤 Cartier Effie Mae
- 👤 Norman J Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:42
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN APPARATUS FOR PRODUCING LIQUID OXYGEN, INCLUDING A COLUMN HAVING AN UPPER CHAMBER IN THE BOTTOM OF WHICH LIQUID OXYGEN IS PRODUCED WITH VAPOR OXYGEN IMMEDIATELY THEREABOVE, AND IN THE TOP OF WHICH VAPOR NITROGEN IS PRODUCED AT TEMPERATURES BELOW THE BOILING POINT OXYGEN AN OXYGEN VAPOR DRAW-OFF CONNECTED INTO SAID CHAMBER IMMEDIATELY ABOVE THE LIQUID LEVEL, AN OXYGEN DISCHARGE OUTLET CONNECTED TO THE DRAWOFF, A HEAT EXCHANGER SUPERPOSED ON THE CHAMBER, HAVING A FIRST PASS DIRECTLY OPEN TO THE CHAMBER TO RECEIVE THE COLD NITROGEN VAPOR, AND HAVING A NITROGEM OUTLET AT ITS OTHER END, AND HAVING A SECOND PASS IN HEAT TRANSFER RELATIONSHIP TO THE FIRST PASS, A CONNECTION BETWEEN THE SECOND PASS AND THE VAPOR OXYGEN SPACE ABOVE THE LIQUID IN THE CANMBER, AN OPPOSITE CONNECTION FROM THE SECOND PASS TO THE OXYGEN DISCHARGE OUTLET, MEANS TO REGULATE THE AMOUNTS OF OXYGEN VAPOR SENT DI-
Claim 2
Independent Claim
148 words
AN APPARATUS FOR PRODUCING LIQUID OXYGEN, INCLUDING A COLUMN HAVING AN UPPER CHAMBER IN THE BOTTOM OF WHICH LIQUID OXYGEN IS PRODUCED WITH VAPOR OXYGEN IMMEDIATELY THEREABOVE, AND IN THE TOP OF WHICH VAPOR NITROGEN IS PRODUCED AT TEMPERATURES BELOW THE BOILING POINT OXYGEN AN OXYGEN VAPOR DRAW-OFF CONNECTED INTO SAID CHAMBER IMMEDIATELY ABOVE THE LIQUID LEVEL, AN OXYGEN DISCHARGE OUTLET CONNECTED TO THE DRAWOFF, A HEAT EXCHANGER SUPERPOSED ON THE CHAMBER, HAVING A FIRST PASS DIRECTLY OPEN TO THE CHAMBER TO RECEIVE THE COLD NITROGEN VAPOR, AND HAVING A NITROGEM OUTLET AT ITS OTHER END, AND HAVING A SECOND PASS IN HEAT TRANSFER RELATIONSHIP TO THE FIRST PASS, A CONNECTION BETWEEN THE SECOND PASS AND THE VAPOR OXYGEN SPACE ABOVE THE LIQUID IN THE CANMBER, AN OPPOSITE CONNECTION FROM THE SECOND PASS TO THE OXYGEN DISCHARGE OUTLET, MEANS TO REGULATE THE AMOUNTS OF OXYGEN VAPOR SENT DI-
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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |