US3366796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the cooling and liquefaction of gases
Assignee: Supply
•
Filing: 1956-04-18
•
Granted: 1968-01-30
•
Expires: 1976-04-18
Abstract
No abstract record available.
Inventors
- 👤 Parkinson David Hardress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25B; F25B9/00; F25B9/02; F25J2290/00; F25J2290/42; Y; Y10; Y10S; Y10S62/00; Y10S62/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A HEAT EXCHANGER COMPRISING A CYLINDRICAL MOUNTING OF LOW THERMAL CAPACITY, SAID MOUNTING COMPRISING A HOLLOW METAL CYLINDER CONTAINING A DISTRIBUTED FILLING OF LOW THERMAL CAPACITY ADAPTED TO RESTRICT CONVECTION FLOW WITHIN THE CYLINDER, A TUBE HELICALLY WOUND ABOUT SAID MOUNTING, A PRESSURE HEAD FOR FEEDING ONE END OF SAID TUBE, AN EXPANSION NOZZLE TERMINATING THE OTHER END OF SAID TUBE, FINS HELICALLY WOUND ABOUT SAID TUBE, A CYLINDRICAL CONTAINER, THE SAID TUBE INSERTED IN SAID CONTAINER, AND RESILIENT WORMING WOUND WITH THE TUBE TO DEFINE IN CONJUNCTION WITH THE INTERNAL WALL OF SAID CONTAINER A PASSAGE THROUGH THE HELICALLY WOUND FINS AND EXTENDING CONCENTRICALLY WITH THE AXIS OF THE CYLINDRICAL MOUNTING FOR GAS EXPANDED BY THE EXPANSION NOZZLE, WHEREBY THE GAS FLOWS AT RIGHT ANGLES
Claim 2
Dependent Claim
126 words
A HEAT EXCHANGER COMPRISING A CYLINDRICAL MOUNTING OF LOW THERMAL CAPACITY, SAID MOUNTING COMPRISING A HOLLOW METAL CYLINDER CONTAINING A DISTRIBUTED FILLING OF LOW THERMAL CAPACITY ADAPTED TO RESTRICT CONVECTION FLOW WITHIN THE CYLINDER, A TUBE HELICALLY WOUND ABOUT SAID MOUNTING, A PRESSURE HEAD FOR FEEDING ONE END OF SAID TUBE, AN EXPANSION NOZZLE TERMINATING THE OTHER END OF SAID TUBE, FINS HELICALLY WOUND ABOUT SAID TUBE, A CYLINDRICAL CONTAINER, THE SAID TUBE INSERTED IN SAID CONTAINER, AND RESILIENT WORMING WOUND WITH THE TUBE TO DEFINE IN CONJUNCTION WITH THE INTERNAL WALL OF SAID CONTAINER A PASSAGE THROUGH THE HELICALLY WOUND FINS AND EXTENDING CONCENTRICALLY WITH THE AXIS OF THE CYLINDRICAL MOUNTING FOR GAS EXPANDED BY THE EXPANSION NOZZLE, WHEREBY THE GAS FLOWS AT RIGHT ANGLES
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |